178 results on '"Buchwal, Agata"'
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2. From Intra-plant to Regional Scale: June Temperatures and Regional Climates Directly and Indirectly Control Betula nana Growth in Arctic Alaska
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Buchwal, Agata, Bret-Harte, M. Syndonia, Bailey, Hannah, and Welker, Jeffrey M.
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- 2023
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3. Divergence of Arctic shrub growth associated with sea ice decline
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Buchwal, Agata, Sullivan, Patrick F, Macias-Fauria, Marc, Post, Eric, Myers-Smith, Isla H, Stroeve, Julienne C, Blok, Daan, Tape, Ken D, Forbes, Bruce C, Ropars, Pascale, Lévesque, Esther, Elberling, Bo, Angers-Blondin, Sandra, Boyle, Joseph S, Boudreau, Stéphane, Boulanger-Lapointe, Noémie, Gamm, Cassandra, Hallinger, Martin, Rachlewicz, Grzegorz, Young, Amanda, Zetterberg, Pentti, and Welker, Jeffrey M more...
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Earth Sciences ,Physical Geography and Environmental Geoscience ,Ecology ,Biological Sciences ,Climate Action ,Arctic Regions ,Climate ,Humidity ,Ice Cover ,Models ,Theoretical ,Plant Development ,Seasons ,Soil ,Temperature ,tundra shrubs ,sea ice ,Arctic ,shrub rings ,divergence - Abstract
Arctic sea ice extent (SIE) is declining at an accelerating rate with a wide range of ecological consequences. However, determining sea ice effects on tundra vegetation remains a challenge. In this study, we examined the universality or lack thereof in tundra shrub growth responses to changes in SIE and summer climate across the Pan-Arctic, taking advantage of 23 tundra shrub-ring chronologies from 19 widely distributed sites (56°N to 83°N). We show a clear divergence in shrub growth responses to SIE that began in the mid-1990s, with 39% of the chronologies showing declines and 57% showing increases in radial growth (decreasers and increasers, respectively). Structural equation models revealed that declining SIE was associated with rising air temperature and precipitation for increasers and with increasingly dry conditions for decreasers. Decreasers tended to be from areas of the Arctic with lower summer precipitation and their growth decline was related to decreases in the standardized precipitation evapotranspiration index. Our findings suggest that moisture limitation, associated with declining SIE, might inhibit the positive effects of warming on shrub growth over a considerable part of the terrestrial Arctic, thereby complicating predictions of vegetation change and future tundra productivity. more...
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- 2020
4. Trees on the tundra: warmer climate might not favor prostrate Larix tree but Betula nana shrub growth in Siberian tundra (Lena River Delta)
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Buchwal, Agata, Rachlewicz, Grzegorz, Heim, Birgit, and Juhls, Bennet
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- 2023
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5. Blue rings in trees and shrubs as indicators of early and late summer cooling events at the northern treeline.
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Buchwal, Agata, Matulewski, Pawel, Sjöberg, Ylva, Piermattei, Alma, Crivellaro, Alan, Balzano, Angela, Merela, Maks, Krže, Luka, Čufar, Katarina, Kirdyanov, Alexander V., Bebchuk, Tatiana, Arosio, Tito, and Büntgen, Ulf more...
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SCOTS pine ,JUNIPERS ,GROWING season ,PINE ,TIMBERLINE ,TREE-rings ,SHRUBS - Abstract
The high temperature sensitivity of pine trees in northern Fennoscandia has led to some of the most reliable tree-ring climate reconstructions in the world for the past millennia. However, wood anatomical anomalies that likely reflect temperature-induced reductions in cell wall lignification, the so-called Blue Rings (BRs), have not yet been systematically investigated in trees and shrubs in northern Europe. Here, we present frontier research on the occurrence of BRs in Pinus sylvestris trees and Juniperus communis (L) s.l. shrubs from the upper treeline in northern Norway (69°N) in relation to instrumental temperature data covering the last ca. 150 years. The highest number of BRs was found in 1902, with 96% of Pinus trees and 68% of Juniperus shrubs showing BRs. These corresponded on average to a 42% vs. 27% proportion of the growth ring in 1902 which was less-lignified in Pinus trees and Juniperus shrubs, respectively. Another peak in BRs recorded for 1877 was more pronounced in Pinus trees (88%) than in Juniperus shrubs (36%), with a lower proportion of less lignified rings. We found the lowest monthly sums of growing degree days in June 1902 and August 1877, resulting in more uniform non-lignified BRs in 1902 than in 1877. Prolonged early growing season cooling shortened the growing season in 1902 and resulted in much thinner cell walls in trees and shrubs than in 1877, which was characterized by extended cooling at the end of the growing season. Also, after 1902 BR, Pinus trees exclusively showed no recovery in the mean cell wall thickness in the following year. Our study provides the first evidence for different impacts of early versus late growing season cooling on cell wall lignification in trees and shrubs at the northern treeline. Using the anatomy of BRs, we demonstrated the potential to refine summer cooling event reconstructions at an intra-annual resolution in northern Fennoscandia and beyond. [ABSTRACT FROM AUTHOR] more...
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- 2025
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6. Altered growth with blue rings: comparison of radial growth and wood anatomy between trampled and non-trampled Scots pine roots
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Matulewski, Paweł, Buchwal, Agata, Gärtner, Holger, Jagodziński, Andrzej M., and Čufar, Katarina
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- 2022
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7. Tundra Trait Team: A database of plant traits spanning the tundra biome
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Bjorkman, Anne D, Myers‐Smith, Isla H, Elmendorf, Sarah C, Normand, Signe, Thomas, Haydn JD, Alatalo, Juha M, Alexander, Heather, Anadon‐Rosell, Alba, Angers‐Blondin, Sandra, Bai, Yang, Baruah, Gaurav, Beest, Mariska te, Berner, Logan, Björk, Robert G, Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S, Cooper, Elisabeth J, Cornelissen, J Hans C, Dickinson, Katharine JM, Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C, Frei, Esther R, Iturrate‐Garcia, Maitane, Good, Megan K, Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hájek, Tomáš, Hallinger, Martin, Happonen, Konsta, Harper, Karen A, Heijmans, Monique MPD, Henry, Gregory HR, Hermanutz, Luise, Hewitt, Rebecca E, Hollister, Robert D, Hudson, James, Hülber, Karl, Iversen, Colleen M, Jaroszynska, Francesca, Jiménez‐Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Klimešová, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J, Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J, Lévesque, Esther, Little, Chelsea J, Luoto, Miska, Macek, Petr, Mack, Michelle C, Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W, Mörsdorf, Martin Alfons, Nabe‐Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M, Oberbauer, Steven F, Olofsson, Johan, Onipchenko, Vladimir G, Petraglia, Alessandro, Pickering, Catherine, Prevéy, Janet S, Rixen, Christian, Rumpf, Sabine B, Schaepman‐Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A, Spasojevic, Marko J, Speed, James David Mervyn, Street, Lorna E, Suding, Katharine, Tape, Ken D, Tomaselli, Marcello, Trant, Andrew, Treier, Urs A, Tremblay, Jean‐Pierre, Tremblay, Maxime, Venn, Susanna, and Virkkala, Anna‐Maria more...
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alpine ,Arctic ,plant functional traits ,tundra ,Ecology - Published
- 2018
8. Plant functional trait change across a warming tundra biome
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Bjorkman, Anne D, Myers-Smith, Isla H, Elmendorf, Sarah C, Normand, Signe, Rüger, Nadja, Beck, Pieter SA, Blach-Overgaard, Anne, Blok, Daan, Cornelissen, J Hans C, Forbes, Bruce C, Georges, Damien, Goetz, Scott J, Guay, Kevin C, Henry, Gregory HR, HilleRisLambers, Janneke, Hollister, Robert D, Karger, Dirk N, Kattge, Jens, Manning, Peter, Prevéy, Janet S, Rixen, Christian, Schaepman-Strub, Gabriela, Thomas, Haydn JD, Vellend, Mark, Wilmking, Martin, Wipf, Sonja, Carbognani, Michele, Hermanutz, Luise, Lévesque, Esther, Molau, Ulf, Petraglia, Alessandro, Soudzilovskaia, Nadejda A, Spasojevic, Marko J, Tomaselli, Marcello, Vowles, Tage, Alatalo, Juha M, Alexander, Heather D, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Beest, Mariska te, Berner, Logan, Björk, Robert G, Buchwal, Agata, Buras, Allan, Christie, Katherine, Cooper, Elisabeth J, Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Frei, Esther R, Grau, Oriol, Grogan, Paul, Hallinger, Martin, Harper, Karen A, Heijmans, Monique MPD, Hudson, James, Hülber, Karl, Iturrate-Garcia, Maitane, Iversen, Colleen M, Jaroszynska, Francesca, Johnstone, Jill F, Jørgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J, Lantz, Trevor, Little, Chelsea J, Speed, James DM, Michelsen, Anders, Milbau, Ann, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M, Oberbauer, Steven F, Olofsson, Johan, Onipchenko, Vladimir G, Rumpf, Sabine B, Semenchuk, Philipp, Shetti, Rohan, Collier, Laura Siegwart, Street, Lorna E, Suding, Katharine N, Tape, Ken D, Trant, Andrew, Treier, Urs A, Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Weijers, Stef, Zamin, Tara, Boulanger-Lapointe, Noémie, Gould, William A, Hik, David S, Hofgaard, Annika, Jónsdóttir, Ingibjörg S, Jorgenson, Janet, Klein, Julia, and Magnusson, Borgthor more...
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Climate Change Impacts and Adaptation ,Biological Sciences ,Ecology ,Environmental Sciences ,Climate Action ,Biometry ,Geographic Mapping ,Global Warming ,Humidity ,Phenotype ,Plant Physiological Phenomena ,Plants ,Soil ,Spatio-Temporal Analysis ,Temperature ,Tundra ,Water ,General Science & Technology - Abstract
The tundra is warming more rapidly than any other biome on Earth, and the potential ramifications are far-reaching because of global feedback effects between vegetation and climate. A better understanding of how environmental factors shape plant structure and function is crucial for predicting the consequences of environmental change for ecosystem functioning. Here we explore the biome-wide relationships between temperature, moisture and seven key plant functional traits both across space and over three decades of warming at 117 tundra locations. Spatial temperature-trait relationships were generally strong but soil moisture had a marked influence on the strength and direction of these relationships, highlighting the potentially important influence of changes in water availability on future trait shifts in tundra plant communities. Community height increased with warming across all sites over the past three decades, but other traits lagged far behind predicted rates of change. Our findings highlight the challenge of using space-for-time substitution to predict the functional consequences of future warming and suggest that functions that are tied closely to plant height will experience the most rapid change. They also reveal the strength with which environmental factors shape biotic communities at the coldest extremes of the planet and will help to improve projections of functional changes in tundra ecosystems with climate warming. more...
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- 2018
9. Higher climatic sensitivity of Scots pine (Pinus sylvestris L.) subjected to tourist pressure on a hiking trail in the Brodnica Lakeland, NE Poland
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Matulewski, Paweł, Buchwal, Agata, and Makohonienko, Mirosław
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- 2019
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10. Annual ring growth of a widespread high arctic shrub reflects past fluctuations in community-level plant biomass
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Le Moullec, Mathilde, Buchwal, Agata, van der Wal, René, Sandal, Lisa, and Hansen, Brage Bremset
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- 2019
11. Declining growth of deciduous shrubs in the warming climate of continental western Greenland
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Gamm, Cassandra M., Sullivan, Patrick F., Buchwal, Agata, Dial, Roman J., Young, Amanda B., Watts, David A., Cahoon, Sean M. P., Welker, Jeffrey M., and Post, Eric
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- 2018
12. Xylem anatomical trait variability provides insight on the climate-growth relationship of Betula nana in western Greenland
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Nielsen, Sigrid S., von Arx, Georg, Damgaard, Christian F., Abermann, Jakob, Buchwal, Agata, Büntgen, Ulf, Treier, Urs A., Barfod, Anders S., and Normand, Signe
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- 2017
13. Temperature sensitivity of willow dwarf shrub growth from two distinct High Arctic sites
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Buchwal, Agata, Weijers, Stef, Blok, Daan, and Elberling, Bo
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- 2019
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14. Quantitative analysis of ring growth in spruce roots and its application towards a more precise dating
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Wrońska-Wałach, Dominika, Sobucki, Mateusz, Buchwał, Agata, Gorczyca, Elżbieta, Korpak, Joanna, Wałdykowski, Piotr, and Gärtner, Holger
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- 2016
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15. Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biome
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Barrio, Isabel C., Lindén, Elin, Te Beest, Mariska, Olofsson, Johan, Rocha, Adrian, Soininen, Eeva M., Alatalo, Juha M., Andersson, Tommi, Asmus, Ashley, Boike, Julia, Bråthen, Kari Anne, Bryant, John P., Buchwal, Agata, Bueno, C. Guillermo, Christie, Katherine S., Denisova, Yulia V., Egelkraut, Dagmar, Ehrich, Dorothee, Fishback, LeeAnn, Forbes, Bruce C., Gartzia, Maite, Grogan, Paul, Hallinger, Martin, Heijmans, Monique M. P. D., Hik, David S., Hofgaard, Annika, Holmgren, Milena, Høye, Toke T., Huebner, Diane C., Jónsdóttir, Ingibjörg Svala, Kaarlejärvi, Elina, Kumpula, Timo, Lange, Cynthia Y. M. J. G., Lange, Jelena, Lévesque, Esther, Limpens, Juul, Macias-Fauria, Marc, Myers-Smith, Isla, van Nieukerken, Erik J., Normand, Signe, Post, Eric S., Schmidt, Niels Martin, Sitters, Judith, Skoracka, Anna, Sokolov, Alexander, Sokolova, Natalya, Speed, James D. M., Street, Lorna E., Sundqvist, Maja K., Suominen, Otso, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Uvarov, Sergey A., Watts, David, Wilmking, Martin, Wookey, Philip A., Zimmermann, Heike H., Zverev, Vitali, and Kozlov, Mikhail V. more...
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- 2017
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16. Methods for measuring arctic and alpine shrub growth: A review
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Myers-Smith, Isla H., Hallinger, Martin, Blok, Daan, Sass-Klaassen, Ute, Rayback, Shelly A., Weijers, Stef, J. Trant, Andrew, Tape, Ken D., Naito, Adam T., Wipf, Sonja, Rixen, Christian, Dawes, Melissa A., A. Wheeler, Julia, Buchwal, Agata, Baittinger, Claudia, Macias-Fauria, Marc, Forbes, Bruce C., Lévesque, Esther, Boulanger-Lapointe, Noémie, Beil, Ilka, Ravolainen, Virve, and Wilmking, Martin more...
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- 2015
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17. Age Matters: older Alnus viridis ssp. fruticosa are more sensitive to summer temperatures in the Alaskan Arctic
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Drew, Jackson W., primary, Bret‐Harte, M. Syndonia, additional, Buchwal, Agata, additional, and Heslop, Calvin, additional
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- 2023
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18. Circum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubs
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Lindén, Elin, te Beest, Mariska, Abreu, Ilka N., Moritz, Thomas, Sundqvist, Maja K., Barrio, Isabel C., Boike, Julia, Bryant, John P., Bråthen, Kari Anne, Buchwal, Agata, Bueno, C. Guillermo, Cuerrier, Alain, Egelkraut, Dagmar D., Forbes, Bruce C., Hallinger, Martin, Heijmans, Monique, Hermanutz, Luise, Hik, David S., Hofgaard, Annika, Holmgren, Milena, Huebner, Diane C., Høye, Toke T., Jónsdóttir, Ingibjörg S., Kaarlejärvi, Elina, Kissler, Emilie, Kumpula, Timo, Limpens, Juul, Myers-Smith, Isla H., Normand, Signe, Post, Eric, Rocha, Adrian V., Schmidt, Niels Martin, Skarin, Anna, Soininen, Eeva M., Sokolov, Aleksandr, Sokolova, Natalia, Speed, James D. M., Street, Lorna, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Watts, David A., Zimmermann, Heike, Olofsson, Johan, Spatial Ecology and Global Change, Environmental Sciences, Spatial Ecology and Global Change, Environmental Sciences, Organismal and Evolutionary Biology Research Programme, and Research Centre for Ecological Change more...
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tundra ,birch ,Zoology and botany: 480 [VDP] ,climate adaptation ,Plant Ecology and Nature Conservation ,ECOLOGY ,EU Birds Directive ,Arctic ,VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 ,conservation policy ,Zoologiske og botaniske fag: 480 [VDP] ,PHENOLICS ,distribution change ,Ecology, Evolution, Behavior and Systematics ,Betula ,SUPPRESSION ,Ekologi ,TANNINS ,WIMEK ,Ecology ,herbivory ,LIFE program ,colonization ,PE&RC ,metabolomics ,wetland ,plant chemical defence ,COMMUNITY ,shrubs ,Wildlife Ecology and Conservation ,VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 ,1181 Ecology, evolutionary biology ,Plantenecologie en Natuurbeheer ,VEGETATION ,WOODY ,RESPONSES - Abstract
Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top–down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic chemical defence and leaf digestibility in resinous (Betula glandulosa, B. nana ssp. exilis) and non-resinous (B. nana ssp. nana, B. pumila) shrub birches to see how they vary among and within taxa and functional groups. Using liquid chromatography–mass spectrometry (LC–MS) metabolomic analyses and in vitro leaf digestibility via incubation in cattle rumen fluid, we analysed defence composition and leaf digestibility in 128 samples from 44 tundra locations. We found biogeographical patterns in anti-herbivore defence where mean leaf triterpene concentrations and twig resin gland density were greater in resinous taxa and mean concentrations of condensing tannins were greater in non-resinous taxa. This indicates a biome-wide trade-off between triterpene- or tannin-dominated defences. However, we also found variations in chemical defence composition and resin gland density both within and among functional groups (resinous/non-resinous) and taxa, suggesting these categorisations only partly predict chemical herbivore defence. Complex tannins were the only defence compounds negatively related to in vitro digestibility, identifying this previously neglected tannin group as having a potential key role in birch anti-herbivore defence. We conclude that circum-Arctic variation in birch anti-herbivore defence can be partly derived from biogeographical distributions of birch taxa, although our detailed mapping of plant defence provides more information on this variation and can be used for better predictions of herbivore effects on Arctic vegetation.rotected area networks help species respond to climate warming. However, the contribution of a site’s environmental and conservation-relevant characteristics to these responsesis not well understood. We investigated how composition of nonbreeding waterbird communities (97 species) in the European Union Natura 2000 (N2K) network (3018 sites)changed in response to increases in temperature over 25 years in 26 European countries.We measured community reshuffling based on abundance time series collected under theInternational Waterbird Census relative to N2K sites’ conservation targets, funding, designation period, and management plan status. Waterbird community composition in sitesexplicitly designated to protect them and with management plans changed more quickly inresponse to climate warming than in other N2K sites. Temporal community changes werenot affected by the designation period despite greater exposure to temperature increaseinside late-designated N2K sites. Sites funded under the LIFE program had lower climate-driven community changes than sites that did not received LIFE funding. Our findingsimply that efficient conservation policy that helps waterbird communities respond to cli-mate warming is associated with sites specifically managed for waterbirds. climate adaptation, colonization, conservation policy, distribution change, EU Birds Directive, LIFE program,wetland. Arctic, Betula, birch, herbivory, metabolomics, plant chemical defence, shrubs, tundra publishedVersion more...
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- 2022
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19. From Intra-plant to Regional Scale: June Temperatures and Regional Climates Directly and Indirectly Control Betula nana Growth in Arctic Alaska
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Buchwal, Agata, primary, Bret-Harte, M. Syndonia, additional, Bailey, Hannah, additional, and Welker, Jeffrey M., additional
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- 2022
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20. Retrogressive thaw slumps in the Alaskan Low Arctic may influence tundra shrub growth more strongly than climate
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Huebner, Diane C., primary, Buchwal, Agata, additional, and Bret‐Harte, M. Syndonia, additional
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- 2022
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21. Publisher Correction to: Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biome
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Barrio, Isabel C., Lindén, Elin, Te Beest, Mariska, Olofsson, Johan, Rocha, Adrian, Soininen, Eeva M., Alatalo, Juha M., Andersson, Tommi, Asmus, Ashley, Boike, Julia, Bråthen, Kari Anne, Bryant, John P., Buchwal, Agata, Bueno, C. Guillermo, Christie, Katherine S., Denisova, Yulia V., Egelkraut, Dagmar, Ehrich, Dorothee, Fishback, LeeAnn, Forbes, Bruce C., Gartzia, Maite, Grogan, Paul, Hallinger, Martin, Heijmans, Monique M. P. D., Hik, David S., Hofgaard, Annika, Holmgren, Milena, Høye, Toke T., Huebner, Diane C., Jónsdóttir, Ingibjörg Svala, Kaarlejärvi, Elina, Kumpula, Timo, Lange, Cynthia Y. M. J. G., Lange, Jelena, Lévesque, Esther, Limpens, Juul, Macias-Fauria, Marc, Myers-Smith, Isla, van Nieukerken, Erik J., Normand, Signe, Post, Eric S., Schmidt, Niels Martin, Sitters, Judith, Skoracka, Anna, Sokolov, Alexander, Sokolova, Natalya, Speed, James D. M., Street, Lorna E., Sundqvist, Maja K., Suominen, Otso, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Uvarov, Sergey A., Watts, David, Wilmking, Martin, Wookey, Philip A., Zimmermann, Heike H., Zverev, Vitali, and Kozlov, Mikhail V. more...
- Published
- 2018
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22. Growth rings show limited evidence for ungulates' potential to suppress shrubs across the Arctic
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Vuorinen, Katariina E. M., Austrheim, Gunnar, Tremblay, Jean-Pierre, Myers-Smith, Isla H., Hortman, Hans, Frank, Peter, Barrio, Isabel C., Dalerum, Fredrik, Björkman, Mats P., Björk, Robert G., Ehrich, Dorothee, Sokolov, Aleksandr, Sokolova, Natalya, Ropars, Pascale, Boudreau, Stéphane, Normand, Signe, Prendin, Angela L., Schmidt, Niels Martin, Pacheco-Solana, Arturo, Post, Eric, John, Christian, Kerby, Jeff, Sullivan, Patrick F., Le Moullec, Mathilde, Hansen, Brage B., van der Wal, Rene, Pedersen, Åshild Ø., Sandal, Lisa, Gough, Laura, Young, Amanda, Li, Bingxi, Magnússon, Rúna Í, Sass-Klaassen, Ute, Buchwal, Agata, Welker, Jeffrey, Grogan, Paul, Andruko, Rhett, Morrissette-Boileau, Clara, Volkovitskiy, Alexander, Terekhina, Alexandra, Speed, James D. M., Vuorinen, Katariina E. M., Austrheim, Gunnar, Tremblay, Jean-Pierre, Myers-Smith, Isla H., Hortman, Hans, Frank, Peter, Barrio, Isabel C., Dalerum, Fredrik, Björkman, Mats P., Björk, Robert G., Ehrich, Dorothee, Sokolov, Aleksandr, Sokolova, Natalya, Ropars, Pascale, Boudreau, Stéphane, Normand, Signe, Prendin, Angela L., Schmidt, Niels Martin, Pacheco-Solana, Arturo, Post, Eric, John, Christian, Kerby, Jeff, Sullivan, Patrick F., Le Moullec, Mathilde, Hansen, Brage B., van der Wal, Rene, Pedersen, Åshild Ø., Sandal, Lisa, Gough, Laura, Young, Amanda, Li, Bingxi, Magnússon, Rúna Í, Sass-Klaassen, Ute, Buchwal, Agata, Welker, Jeffrey, Grogan, Paul, Andruko, Rhett, Morrissette-Boileau, Clara, Volkovitskiy, Alexander, Terekhina, Alexandra, and Speed, James D. M. more...
- Abstract
Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may depend on prevailing regional climatic conditions. To study how ungulates interact with temperature to influence growth of tundra shrubs across the Arctic tundra biome, we assembled dendroecological data from 20 sites, comprising 1153 individual shrubs and 223 63 annual growth rings. Evidence for ungulates suppressing shrub radial growth was only observed at intermediate summer temperatures (6.5 °C–9 °C), and even at these temperatures the effect was not strong. Multiple factors, including forage preferences and landscape use by the ungulates, and favourable climatic conditions enabling effective compensatory growth of shrubs, may weaken the effects of ungulates on shrubs, possibly explaining the weakness of observed ungulate effects. Earlier local studies have shown that ungulates may counteract the impacts of warming on tundra shrub growth, but we demonstrate that ungulates' potential to suppress shrub radial growth is not always evident, and may be limited to certain climatic conditions. more...
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- 2022
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23. Circum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubs
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Spatial Ecology and Global Change, Environmental Sciences, Lindén, Elin, te Beest, Mariska, Abreu, Ilka N., Moritz, Thomas, Sundqvist, Maja K., Barrio, Isabel C., Boike, Julia, Bryant, John P., Bråthen, Kari Anne, Buchwal, Agata, Bueno, C. Guillermo, Cuerrier, Alain, Egelkraut, Dagmar D., Forbes, Bruce C., Hallinger, Martin, Heijmans, Monique, Hermanutz, Luise, Hik, David S., Hofgaard, Annika, Holmgren, Milena, Huebner, Diane C., Høye, Toke T., Jónsdóttir, Ingibjörg S., Kaarlejärvi, Elina, Kissler, Emilie, Kumpula, Timo, Limpens, Juul, Myers-Smith, Isla H., Normand, Signe, Post, Eric, Rocha, Adrian V., Schmidt, Niels Martin, Skarin, Anna, Soininen, Eeva M., Sokolov, Aleksandr, Sokolova, Natalia, Speed, James D. M., Street, Lorna, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Watts, David A., Zimmermann, Heike, Olofsson, Johan, Spatial Ecology and Global Change, Environmental Sciences, Lindén, Elin, te Beest, Mariska, Abreu, Ilka N., Moritz, Thomas, Sundqvist, Maja K., Barrio, Isabel C., Boike, Julia, Bryant, John P., Bråthen, Kari Anne, Buchwal, Agata, Bueno, C. Guillermo, Cuerrier, Alain, Egelkraut, Dagmar D., Forbes, Bruce C., Hallinger, Martin, Heijmans, Monique, Hermanutz, Luise, Hik, David S., Hofgaard, Annika, Holmgren, Milena, Huebner, Diane C., Høye, Toke T., Jónsdóttir, Ingibjörg S., Kaarlejärvi, Elina, Kissler, Emilie, Kumpula, Timo, Limpens, Juul, Myers-Smith, Isla H., Normand, Signe, Post, Eric, Rocha, Adrian V., Schmidt, Niels Martin, Skarin, Anna, Soininen, Eeva M., Sokolov, Aleksandr, Sokolova, Natalia, Speed, James D. M., Street, Lorna, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Watts, David A., Zimmermann, Heike, and Olofsson, Johan more...
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- 2022
24. Contemporary and past aeolian deposition rates in periglacial conditions (Ebba Valley, central Spitsbergen)
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Rymer, Krzysztof G., Rachlewicz, Grzegorz, Buchwal, Agata, Temme, Arnaud J. A. M., Reimann, Tony, van der Meij, W. Marijn, Rymer, Krzysztof G., Rachlewicz, Grzegorz, Buchwal, Agata, Temme, Arnaud J. A. M., Reimann, Tony, and van der Meij, W. Marijn more...
- Abstract
Quantitative measurements of aeolian activity at high latitudes are not currently carried out on a large scale, even though these processes are important elements of the geomorphic system of polar regions, which are particularly affected by climate change. This study presents the results of aeolian deposition rates measured and calculated for one of the central Spitsbergen postglacial valleys (Ebba Valley). The results are based on seven summer season field campaigns (2012-2018), as well as on AMS C-14 and OSL dating of niveo-aeolian and aeolian sediments. Contemporary mean aeolian deposition rates ranged from 0.1 to 22.9 g.m -(2) day (-1) over selected parts of the valley and averaged from 2.1 to 12.3 g-m(2) day (-1) over the studied summer seasons. Interestingly strong relationships (r(2) = 0.71, p = 0.017) between mean air temperature and mean aeolian deposition were observed, possibly indicating the importance of the source material delivered to the valley by fluvioglacial processes. Moreover, aeolian deposition dependence on the source material reflected in the local nature of the process was observed. Niveo-aeolian deposition rates were estimated for the period since the 11th century, through the Little Ice Age, till the second half of the 20th century and revealed a rather constant value of 0.05 cm per year. Since then, the niveo-aeolian deposition rate has significantly increased and equalled 0.3 cm per year, which may be related to rising air temperatures and associated pan-Arctic environmental changes. more...
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- 2022
25. Circum-Arctic distribution of chemical anti-herbivore compounds arctic shrubs
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Lindén, Elin, te Beest, Mariska, Aubreu, Ilka, Moritz, Thomas, Sundqvist, Maja K., Barrio, Isabel C., Boike, Julia, Bryant, John P., Bråthen, Kari Anne, Buchwal, Agata, Bueno, Guillermo, Currier, Alain, Egelkraut, Dagmar D., Forbes, Bruce C., Hallinger, Martin, Heijmans, Monique, Hermanutz, Luise, Hik, David S., Hofgaard, Annika, Holmgren, Milena, Huebner, Diane C., Høye, Toke T., Jónsdóttir, Ingibjörg S., Kaarlejärvi, Elina, Kissler, Emilie, Kumpula, Timo, Limpens, Juul, Myers-Smith, Isla H., Normand, Signe, Post, Eric, Rocha, Adrian V., Schmidt, Niels Martin, Skarin, Anna, Soininen, Eeva M., Sokolov, Aleksandr, Sokolova, Natalia, Speed, James D.M., Street, Lorna, Tananaev, Nikita, Tremblay, Jean Pierre, Urbanowicz, Christine, Watts, David A., Zimmermann, Heike, Olofsson, Johan, Lindén, Elin, te Beest, Mariska, Aubreu, Ilka, Moritz, Thomas, Sundqvist, Maja K., Barrio, Isabel C., Boike, Julia, Bryant, John P., Bråthen, Kari Anne, Buchwal, Agata, Bueno, Guillermo, Currier, Alain, Egelkraut, Dagmar D., Forbes, Bruce C., Hallinger, Martin, Heijmans, Monique, Hermanutz, Luise, Hik, David S., Hofgaard, Annika, Holmgren, Milena, Huebner, Diane C., Høye, Toke T., Jónsdóttir, Ingibjörg S., Kaarlejärvi, Elina, Kissler, Emilie, Kumpula, Timo, Limpens, Juul, Myers-Smith, Isla H., Normand, Signe, Post, Eric, Rocha, Adrian V., Schmidt, Niels Martin, Skarin, Anna, Soininen, Eeva M., Sokolov, Aleksandr, Sokolova, Natalia, Speed, James D.M., Street, Lorna, Tananaev, Nikita, Tremblay, Jean Pierre, Urbanowicz, Christine, Watts, David A., Zimmermann, Heike, and Olofsson, Johan more...
- Abstract
Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top-down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic chemical defence and leaf digestibility in resinous (Betula glandulosa, B. nana ssp. exilis) and non-resinous (B. nana ssp. nana, B. pumila) shrub birches to see how it varies among and within taxa and functional groups. Using LC-MS metabolomic analyses and in-vitro leaf digestibility via incubation in cattle rumen fluid, we analysed defence composition and leaf digestibility in 128 samples from 44 tundra locations. We found biogeographical patterns in anti-herbivore defence where mean leaf triterpene concentrations and twig resin gland density were greater in resinous taxa and mean concentrations of condensing tannins were greater in non-resinous taxa. This indicates a biome-wide trade-off between triterpene or tannin dominated defences. However, we also found variations in chemical defence composition and resin gland density both within and among functional groups (resinous/non-resinous) and taxa, suggesting these categorisations only partly predict chemical herbivore defence. Complex tannins were the only defence compounds negatively related to In-Vitro Digestibility, identifying this previously neglected tannin group as having a potential key role in birch anti-herbivore defence. We conclude that circum-Arctic variation in birch anti-herbivore defence can be partly derived from biogeographical distributions of birch taxa, although our detailed mapping of plant defence provides more information on this variation and can be used, Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top-down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, non-resinous shrubs could be more influenced by herbivores than more defended, resinous shrubs. However, sparse field measurements limit our current understanding of how much of the circum-Arctic variation in defence compounds is explained by taxa or defence functional groups (resinous/non-resinous). We measured circum-Arctic chemical defence and leaf digestibility in resinous (Betula glandulosa, B. nana ssp. exilis) and non-resinous (B. nana ssp. nana, B. pumila) shrub birches to see how it varies among and within taxa and functional groups. Using LC-MS metabolomic analyses and in-vitro leaf digestibility via incubation in cattle rumen fluid, we analysed defence composition and leaf digestibility in 128 samples from 44 tundra locations. We found biogeographical patterns in anti-herbivore defence where mean leaf triterpene concentrations and twig resin gland density were greater in resinous taxa and mean concentrations of condensing tannins were greater in non-resinous taxa. This indicates a biome-wide trade-off between triterpene or tannin dominated defences. However, we also found variations in chemical defence composition and resin gland density both within and among functional groups (resinous/non-resinous) and taxa, suggesting these categorisations only partly predict chemical herbivore defence. Complex tannins were the only defence compounds negatively related to In-Vitro Digestibility, identifying this previously neglected tannin group as having a potential key role in birch anti-herbivore defence. We conclude that circum-Arctic variation in birch anti-herbivore defence can be partly derived from biogeographical distributions of birch taxa, although our detailed mapping of plant defence provides more information on this variation and can be used more...
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- 2022
26. Contemporary and past aeolian deposition rates in periglacial conditions (Ebba Valley, central Spitsbergen)
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Rymer, Krzysztof G., primary, Rachlewicz, Grzegorz, additional, Buchwal, Agata, additional, Temme, Arnaud J.A.M., additional, Reimann, Tony, additional, and van der Meij, W. Marijn, additional
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- 2022
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27. Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic
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Vuorinen, Katariina, primary, Austrheim, Gunnar, additional, Tremblay, Jean-Pierre, additional, Myers-Smith, Isla H., additional, Hortman, Hans Ivar, additional, Frank, Peter, additional, Barrio, Isabel C., additional, Dalerum, Fredrik, additional, Björkman, Mats P., additional, Björk, Robert G., additional, Ehrich, Dorothee, additional, Sokolov, Aleksandr, additional, Sokolova, Natalia, additional, Ropars, Pascale, additional, Boudreau, Stephane, additional, Normand, Signe, additional, Prendin, Angela Luisa, additional, Schmidt, Niels Martin, additional, Pacheco, Arturo, additional, Post, Eric, additional, John, Christian, additional, Kerby, Jeff T, additional, Sullivan, Patrick F, additional, Le Moullec, Mathilde, additional, Hansen, Brage Bremset, additional, Van der Wal, Rene, additional, Pedersen, Åshild Ønvik, additional, Sandal, Lisa, additional, Gough, Laura, additional, Young, Amanda, additional, Li, Bingxi, additional, Magnússon, Rúna Íris, additional, Sass-Klaassen, Ute, additional, Buchwal, Agata, additional, Welker, Jeffery M, additional, Grogan, Paul, additional, Andruko, Rhett, additional, Morrissette-Boileau, Clara, additional, Volkovitskiy, Alexander, additional, Terekhina, Alexandra, additional, and Speed, James David Mervyn, additional more...
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- 2022
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28. Temperature modulates intra-plant growth of Salix polaris from a high Arctic site (Svalbard)
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Buchwal, Agata, Rachlewicz, Grzegorz, Fonti, Patrick, Cherubini, Paolo, and Gärtner, Holger
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- 2013
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29. Above Ground biomass stocks, pool ages and fluxes in the largest arctic delta, the Lena Delta in Siberia
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Heim, Birgit, Shevtsova, Iuliia, Buchwal, Agata, Rachlewicz, Grzegorz, Lisovski, Simeon, Runge, Alexandra, Fuchs, Matthias, Grosse, Guido, Kruse, Stefan, Herzschuh, Ulrike, Bartsch, Annett, Heim, Birgit, Shevtsova, Iuliia, Buchwal, Agata, Rachlewicz, Grzegorz, Lisovski, Simeon, Runge, Alexandra, Fuchs, Matthias, Grosse, Guido, Kruse, Stefan, Herzschuh, Ulrike, and Bartsch, Annett more...
- Abstract
Vegetation biomass is a globally important climate-relevant terrestrial carbon pool. Landsat, Sentinel-2 and Sentinel-1 satellite missions provide a landscape-level opportunity to upscale tundra vegetation communities and biomass in high latitude terrestrial environments. We assessed the applicability of landscape-level remote sensing for the low Arctic Lena Delta region in Northern Yakutia, Siberia, Russia. The Lena Delta is the largest delta in the Arctic and is located North of the treeline and the 10 °C July isotherm at 72° Northern Latitude in the Laptev Sea region. During the LENA2018 expedition, we set up plots for plant projective cover and Above Ground Biomass (AGB) and sampled shrubs for shrub-ring analyses. AGB is providing the magnitude of the carbon flux, whereas stand age is irreplaceable to provide the cycle rate. AGB data and shrub age data clearly show a separation between i) low disturbance landscape types with dominant AGB moss contribution, but always low vascular plant AGB (<0.5 kg m-2) characterised by old shrubs of several decades of stand age versus ii) a much higher vascular plant AGB contribution (> 0.5 kg m-2) with only young shrubs in high disturbance regimes. The low disturbance regimes are represented on the Holocene and Pleistocene delta terraces in form of azonal polygonal tundra complexes and softly dissected valleys with zonal tussock tundra. In contrast, the high disturbance regimes are sites of thermo-erosion such as along thermo-erosional valleys and on floodplains. We upscaled AGB and above ground carbon pool ages using a Sentinel-2 satellite acquisition from early August 2018. We classified via classification training using Elementary Sampling Units that are the 30 m x 30 m vegetation field plots. We then used the land cover classes and grouped them according to their settings either in high disturbance or low disturbance regimes with each associated AGB value ranges and shrub age regimes. We also evaluated circum-Arctic harmon more...
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- 2021
30. Landscape-level remote sensing for upscaling of land cover, above ground biomass and above ground carbon fluxes in the Lena River Delta (Northern Yakutia, Russia)
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Heim, Birgit, primary, Shevtsova, Iuliia, additional, Kruse, Stefan, additional, Herzschuh, Ulrike, additional, Buchwal, Agata, additional, Rachlewicz, Grzegorz, additional, and Bartsch, Annett, additional more...
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- 2021
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31. Climate synchronises shrub growth across a high‐arctic archipelago: contrasting implications of summer and winter warming
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Le Moullec, Mathilde, primary, Sandal, Lisa, additional, Grøtan, Vidar, additional, Buchwal, Agata, additional, and Hansen, Brage Bremset, additional
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- 2020
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32. Remote Sensing approaches for assessing vegetation carbon stocks and fluxes in the Lena River Delta (Northern Yakutia, Russia)
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Heim, Birgit, Shevtsova, Iuliia, Runge, Alexandra, Kruse, Stefan, Nitze, Ingmar, Grosse, Guido, Herzschuh, Ulrike, Buchwal, Agata, Rachlewicz, Grzegorz, Bartsch, Annett, Heim, Birgit, Shevtsova, Iuliia, Runge, Alexandra, Kruse, Stefan, Nitze, Ingmar, Grosse, Guido, Herzschuh, Ulrike, Buchwal, Agata, Rachlewicz, Grzegorz, and Bartsch, Annett more...
- Abstract
Uncertainty in carbon cycling in terrestrial ecosystems contributes to overall uncertainty in Earth System Models. In particular, polar terrestrial ecosystems are understudied. Here, we focus on optical and radar remote sensing approaches to understand above-ground carbon dynamics related to vegetation as primary producers in tundra permafrost landscapes. In the ongoing Russian-German research cooperation and joint field expeditions we evaluate the applicability of remote sensing for assessing vegetation stocks and short-term fluxes in the Lena River Delta in the Siberian Arctic. New spaceborne satellite missions such as Sentinel-1, Sentinel-2 and ESA Data User Element DUE Permafrost provide useful services and data for this investigation. i) We evaluated and ground-truthed circumarctic-harmonized geospatial products of land cover and vegetation height from the ESA GlobPermafrost program for the Lena Delta region. The remote sensing products were derived from radar Sentinel-1 and optical Sentinel-2 satellite data. They are findable in the Arctic Permafrost Spatial Center (APGC) (apgc.awi.de) and are published under 10.1594/PANGAEA.897916, [Titel anhand dieser DOI in Citavi-Projekt übernehmen] and 10.1594/PANGAEA.897045 [Titel anhand dieser DOI in Citavi-Projekt übernehmen] . ii) We classified land cover using Sentinel-2 data based on in-situ vegetation data and optimized on biomass and wetness regimes. iii) We investigated the applicability of different land cover products for upscaling in-situ field-based biomass estimates to landscape-scale above-ground vegetation carbon stocks. iv) We investigated how disturbances enhance above-ground vegetation carbon cycling using in-situ data on vegetation community, biomass, and stand age and including remote sensing observations. Our research suggests that subarctic land cover needs to show biomass and moisture regimes to be applicable. Sentinel-1 and Sentinel-2 satellite missions provide adequate spatial high resolution to more...
- Published
- 2020
33. Tundra Trait Team:A database of plant traits spanning the tundra biome
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Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Bjork, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S., Cooper, Elisabeth J., Cornelissen, J. Hans C., Dickinson, Katharine J. M., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C., Frei, Esther R., Iturrate-Garcia, Maitane, Good, Megan K., Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hajek, Tomas, Hallinger, Martin, Happonen, Konsta, Harper, Karen A., Heijmans, Monique M. P. D., Henry, Gregory H. R., Hermanutz, Luise, Hewitt, Rebecca E., Hollister, Robert D., Hudson, James, Huelber, Karl, Iversen, Colleen M., Jaroszynska, Francesca, Jimenez-Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejarvi, Elina, Klady, Rebecca, Klimesova, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J., Levesque, Esther, Little, Chelsea J., Luoto, Miska, Macek, Petr, Mack, Michelle C., Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W., Morsdorf, Martin Alfons, Nabe-Nielsen, Jacob, Nielsen, Sigrid Scholer, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Petraglia, Alessandro, Pickering, Catherine, Prevey, Janet S., Rixen, Christian, Rumpf, Sabine B., Schaepman-Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Speed, James David Mervyn, Street, Lorna E., Suding, Katharine, Tape, Ken D., Tomaselli, Marcello, Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Virkkala, Anna-Maria, Vowles, Tage, Weijers, Stef, Wilmking, Martin, Wipf, Sonja, Zamin, Tara, Systems Ecology, Spatial Ecology and Global Change, and Environmental Sciences more...
- Subjects
Ekologi ,Chemistry ,Arctic ,plant functional traits ,tundra ,Ecology ,Economics ,Ecological Applications ,alpine ,VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 ,VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 ,Biology - Abstract
Motivation: The Tundra Trait Team (TTT) database includes field-based measurements of key traits related to plant form and function at multiple sites across the tundra biome. This dataset can be used to address theoretical questions about plant strategy and trade-offs, trait environment relationships and environmental filtering, and trait variation across spatial scales, to validate satellite data, and to inform Earth system model parameters. Main types of variable contained: The database contains 91,970 measurements of 18 plant traits. The most frequently measured traits (>1,000 observations each) include plant height, leaf area, specific leaf area, leaf fresh and dry mass, leaf dry matter content, leaf nitrogen, carbon and phosphorus content, leaf C:N and N:P, seed mass, and stem specific density. Spatial location and grain: Measurements were collected in tundra habitats in both the Northern and Southern Hemispheres, including Arctic sites in Alaska, Canada, Greenland, Fennoscandia and Siberia, alpine sites in the European Alps, Colorado Rockies, Caucasus, Ural Mountains, Pyrenees, Australian Alps, and Central Otago Mountains (New Zealand), and sub-Antarctic Marion Island. More than 99% of observations are georeferenced. Time period and grain: All data were collected between 1964 and 2018. A small number of sites have repeated trait measurements at two or more time periods. Major taxa and level of measurement: Trait measurements were made on 978 terrestrial vascular plant species growing in tundra habitats. Most observations are on individuals (86%), while the remainder represent plot or site means or maximums per species. Software format: csv file and GitHub repository with data cleaning scripts in R; contribution to TRY plant trait database (www.try-db.org) to be included in the next version release. 2Ecoinformatics and Biodiversity, Department of Bioscience, Aarhus University, Aarhus, Denmark 3Senckenberg Gesellschaft fD?r Naturforschung, Biodiversity and Climate Research Centre (BiK?F), Frankfurt, Germany 4Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado 5National Ecological Observatory Network, Boulder, Colorado 6Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 7Arctic Research Center, Department of Bioscience, Aarhus University, Aarhus, Denmark 8Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Bioscience, Aarhus University, Aarhus, Denmark 9Department of Biological and Environmental Sciences, Qatar University, Doha, Qatar 10Department of Forestry, Forest and Wildlife Research Center, Mississippi State University, Mississippi 11Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Barcelona, Spain 12Biodiversity Research Institute, University of Barcelona, Barcelona, Spain 13Institute of Botany and Landscape Ecology, Greifswald University, Greifswald, Germany 14Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Xishuangbanna, China 15Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland 16Department of Ecology and Environmental Science, Ume� University, Ume�, Sweden 17Environmental Sciences, Copernicus Institute of Sustainable Development, Utrecht University, Utrecht, The Netherlands 18School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, Arizona 19Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden 20Gothenburg Global Biodiversity Centre, GD?teborg, Sweden 21Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden 22Martin Luther University Halle?Wittenberg, Institute of Biology / Geobotany and Botanical Garden, Halle (Saale), Germany 23German Centre for Integrative Biodiversity Research (iDiv) Halle?Jena?Leipzig, Leipzig, Germany 24Adam Mickiewicz University, Institute of Geoecology and Geoinformation, Poznan, Poland 25University of Alaska Anchorage, Department of Biological Sciences, Anchorage, Alaska 26Technische Universit�t MD?nchen, Freising, Germany 27Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy 28The Alaska Department of Fish and Game, Anchorage, Alaska 29Department of Biology, Memorial University, St. John�s, Newfoundland and Labrador, Canada 30Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT? The Arctic University of Norway, Troms�, Norway 31Systems Ecology, Department of Ecological Science, Vrije Universiteit, Amsterdam, The Netherlands 32Department of Botany, University of Otago, Dunedin, New Zealand 33Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria 34Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark 35Department of Physiological Diversity, Helmholtz Centre for Environmental Research ? UFZ, Leipzig, Germany 36Department of Ecology and Genetics, University of Oulu, Oulu, Finland 37Arctic Centre, University of Lapland, Rovaniemi, Finland 38Swiss Federal Research Institute WSL, Birmensdorf, Switzerland 39Department of Geography, University of British Columbia, Vancouver, British Columbia, Canada 40Faculty of Science and Technology, Federation University, Ballarat, Victoria, Australia 41Global Ecology Unit, CREAF?CSIC?UAB, Bellaterra, Catalonia, Spain 42CREAF, Bellaterra, Cerdanyola del Vall�s, Catalonia, Spain 43Department of Ecology, Environment and Evolution, La Trobe University, Bundoora, Australia 44Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa 45Department of Biology, Queen�s University, Kingston, Ontario, Canada Scopus more...
- Published
- 2018
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34. Tundra Trait Team: A database of plant traits spanning the tundra biome
- Author
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Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Björk, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S., Cooper, Elisabeth J., Cornelissen, J. Hans C., Dickinson, Katharine J. M., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C., Frei, Esther R., Iturrate-Garcia, Maitane, Good, Megan K., Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hájek, Tomáš, Hallinger, Martin, Happonen, Konsta, Harper, Karen A., Heijmans, Monique M. P. D., Henry, Gregory H. R., Hermanutz, Luise, Hewitt, Rebecca E., Hollister, Robert D., Hudson, James, Hülber, Karl, Iversen, Colleen M., Jaroszynska, Francesca, Jiménez-Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Klimešová, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J., Lévesque, Esther, Little, Chelsea J., Luoto, Miska, Macek, Petr, Mack, Michelle C., Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W., Mörsdorf, Martin Alfons, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Petraglia, Alessandro, Pickering, Catherine, Prevéy, Janet S., Rixen, Christian, Rumpf, Sabine B., Schaepman-Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Speed, James David Mervyn, Street, Lorna E., Suding, Katharine, Tape, Ken D., Tomaselli, Marcello, Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Virkkala, Anna-Maria, Vowles, Tage, Weijers, Stef, Wilmking, Martin, Wipf, Sonja, Zamin, Tara, Spatial Ecology and Global Change, and Environmental Sciences more...
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Arctic ,plant functional traits ,tundra ,alpine - Abstract
Motivation The Tundra Trait Team (TTT) database includes field-based measurements of key traits related to plant form and function at multiple sites across the tundra biome. This dataset can be used to address theoretical questions about plant strategy and trade-offs, trait?environment relationships and environmental filtering, and trait variation across spatial scales, to validate satellite data, and to inform Earth system model parameters. Main types of variable contained The database contains 91,970 measurements of 18 plant traits. The most frequently measured traits (> 1,000 observations each) include plant height, leaf area, specific leaf area, leaf fresh and dry mass, leaf dry matter content, leaf nitrogen, carbon and phosphorus content, leaf C:N and N:P, seed mass, and stem specific density. Spatial location and grain Measurements were collected in tundra habitats in both the Northern and Southern Hemispheres, including Arctic sites in Alaska, Canada, Greenland, Fennoscandia and Siberia, alpine sites in the European Alps, Colorado Rockies, Caucasus, Ural Mountains, Pyrenees, Australian Alps, and Central Otago Mountains (New Zealand), and sub-Antarctic Marion Island. More than 99% of observations are georeferenced. Time period and grain All data were collected between 1964 and 2018. A small number of sites have repeated trait measurements at two or more time periods. Major taxa and level of measurement Trait measurements were made on 978 terrestrial vascular plant species growing in tundra habitats. Most observations are on individuals (86%), while the remainder represent plot or site means or maximums per species. Software format csv file and GitHub repository with data cleaning scripts in R; contribution to TRY plant trait database (www.try-db.org) to be included in the next version release. more...
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- 2018
35. Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana 1 complex) increases with temperature and precipitation across the tundra biome
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Barrio, Isabel C., Te Beest, Mariska, Olofsson, Johan, Rocha, A., Soininen, Eeva M, Alatalo, Juha M., Andersson, Tommi, Asmus, Ashley, Boike, J, Bråthen, Kari Anne, Bryant, John P., Buchwal, Agata, Bueno, C. Guillermo, Christie, Katherine S., Denisova, Yulia V., Egelkraut, Dagmar, Ehrich, Dorothee, Fishback, LeeAnn, Forbes, Bruce C., Gartzia, Maite, Grogan, Paul, Hallinger, Martin, Heijmans, Monique M. P. D., Hik, David S., Hofgaard, Annika, Holmgren, Milena, Høye, Toke T., Huebner, Diane C., Jónsdóttir, Ingibjörg S., Kaarlejärvi, Elina, Kumpula, Timo, Lange, Cynthia Y.M.J.G, Lange, Jelena, Levesque, Esther, Limpens, Juul, Macias-Fauria, Marc, Myers-Smith, Isla, and Street, Lorna more...
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food and beverages - Abstract
Chronic, low intensity herbivory by invertebrates, termed background herbivory, has been understudied in tundra, yet its impacts are likely to increase in a warmer Arctic. The magnitude of these changes is however hard to predict as we know little about the drivers of current levels of invertebrate herbivory in tundra. We assessed the intensity of invertebrate herbivory on a common tundra plant, the dwarf birch (Betula glandulosa-nana complex), and investigated its relationship to latitude and climate across the tundra biome. Leaf damage by defoliating, mining and gall-forming invertebrates was measured in samples collected from 192 sites at 56 locations. Our results indicate that invertebrate herbivory is nearly ubiquitous across the tundra biome but occurs at low intensity. On average, invertebrates damaged 11.2% of the leaves and removed 1.4% of total leaf area. The damage was mainly caused by external leaf feeders, and most damaged leaves were only slightly affected (12% leaf area lost). Foliar damage was consistently positively correlated with mid-summer (July) temperature and, to a lesser extent, precipitation in the year of data collection, irrespective of latitude. Our models predict that, on average, foliar losses to invertebrates on dwarf birch are likely to increase by 6–7% over the current levels with a 1 °C increase in summer temperatures. Our results show that invertebrate herbivory on dwarf birch is small in magnitude but given its prevalence and dependence on climatic variables, background invertebrate herbivory should be included in predictions of climate change impacts on tundra ecosystems. more...
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- 2017
36. Temperature sensitivity of willow dwarf shrub growth from two distinct High Arctic sites
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Buchwal, Agata, primary, Weijers, Stef, additional, Blok, Daan, additional, and Elberling, Bo, additional
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- 2018
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37. Annual ring growth of a widespread high arctic shrub reflects past fluctuations in community‐level plant biomass
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Le Moullec, Mathilde, primary, Buchwal, Agata, additional, Wal, René, additional, Sandal, Lisa, additional, and Hansen, Brage Bremset, additional
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- 2018
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38. Plant functional trait change across a warming tundra biome
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Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Rüger, Nadja, Beck, Pieter S. A., Blach-Overgaard, Anne, Blok, Daan, Cornelissen, J. Hans C., Forbes, Bruce C., Georges, Damien, Goetz, Scott J., Guay, Kevin C., Henry, Gregory H. R., HilleRisLambers, Janneke, Hollister, Robert D., Karger, Dirk N., Kattge, Jens, Manning, Peter, Prevéy, Janet S., Rixen, Christian, Schaepman-Strub, Gabriela, Thomas, Haydn J. D., Vellend, Mark, Wilmking, Martin, Wipf, Sonja, Carbognani, Michele, Hermanutz, Luise, Lévesque, Esther, Molau, Ulf, Petraglia, Alessandro, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Tomaselli, Marcello, Vowles, Tage, Alatalo, Juha M., Alexander, Heather D., Anadon-Rosell, Alba, Angers-Blondin, Sandra, Beest, Mariska te, Berner, Logan, Björk, Robert G., Buchwal, Agata, Buras, Allan, Christie, Katherine, Cooper, Elisabeth J., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Frei, Esther R., Grau, Oriol, Grogan, Paul, Hallinger, Martin, Harper, Karen A., Heijmans, Monique M. P. D., Hudson, James, Hülber, Karl, Iturrate-Garcia, Maitane, Iversen, Colleen M., Jaroszynska, Francesca, Johnstone, Jill F., Jørgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Little, Chelsea J., Speed, James D. M., Michelsen, Anders, Milbau, Ann, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Rumpf, Sabine B., Semenchuk, Philipp, Shetti, Rohan, Collier, Laura Siegwart, Street, Lorna E., Suding, Katharine N., Tape, Ken D., Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Weijers, Stef, Zamin, Tara, Boulanger-Lapointe, Noémie, Gould, William A., Hik, David S., Hofgaard, Annika, Jónsdóttir, Ingibjörg S., Jorgenson, Janet, Klein, Julia, Magnusson, Borgthor, Tweedie, Craig, Wookey, Philip A., Bahn, Michael, Blonder, Benjamin, van Bodegom, Peter M., Bond-Lamberty, Benjamin, Campetella, Giandiego, Cerabolini, Bruno E. L., Chapin, F. Stuart, Cornwell, William K., Craine, Joseph, Dainese, Matteo, de Vries, Franciska T., Díaz, Sandra, Enquist, Brian J., Green, Walton, Milla, Ruben, Niinemets, Ülo, Onoda, Yusuke, Ordoñez, Jenny C., Ozinga, Wim A., Penuelas, Josep, Poorter, Hendrik, Poschlod, Peter, Reich, Peter B., Sandel, Brody, Schamp, Brandon, Sheremetev, Serge, Weiher, Evan, Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Rüger, Nadja, Beck, Pieter S. A., Blach-Overgaard, Anne, Blok, Daan, Cornelissen, J. Hans C., Forbes, Bruce C., Georges, Damien, Goetz, Scott J., Guay, Kevin C., Henry, Gregory H. R., HilleRisLambers, Janneke, Hollister, Robert D., Karger, Dirk N., Kattge, Jens, Manning, Peter, Prevéy, Janet S., Rixen, Christian, Schaepman-Strub, Gabriela, Thomas, Haydn J. D., Vellend, Mark, Wilmking, Martin, Wipf, Sonja, Carbognani, Michele, Hermanutz, Luise, Lévesque, Esther, Molau, Ulf, Petraglia, Alessandro, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Tomaselli, Marcello, Vowles, Tage, Alatalo, Juha M., Alexander, Heather D., Anadon-Rosell, Alba, Angers-Blondin, Sandra, Beest, Mariska te, Berner, Logan, Björk, Robert G., Buchwal, Agata, Buras, Allan, Christie, Katherine, Cooper, Elisabeth J., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Frei, Esther R., Grau, Oriol, Grogan, Paul, Hallinger, Martin, Harper, Karen A., Heijmans, Monique M. P. D., Hudson, James, Hülber, Karl, Iturrate-Garcia, Maitane, Iversen, Colleen M., Jaroszynska, Francesca, Johnstone, Jill F., Jørgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Little, Chelsea J., Speed, James D. M., Michelsen, Anders, Milbau, Ann, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Rumpf, Sabine B., Semenchuk, Philipp, Shetti, Rohan, Collier, Laura Siegwart, Street, Lorna E., Suding, Katharine N., Tape, Ken D., Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Weijers, Stef, Zamin, Tara, Boulanger-Lapointe, Noémie, Gould, William A., Hik, David S., Hofgaard, Annika, Jónsdóttir, Ingibjörg S., Jorgenson, Janet, Klein, Julia, Magnusson, Borgthor, Tweedie, Craig, Wookey, Philip A., Bahn, Michael, Blonder, Benjamin, van Bodegom, Peter M., Bond-Lamberty, Benjamin, Campetella, Giandiego, Cerabolini, Bruno E. L., Chapin, F. Stuart, Cornwell, William K., Craine, Joseph, Dainese, Matteo, de Vries, Franciska T., Díaz, Sandra, Enquist, Brian J., Green, Walton, Milla, Ruben, Niinemets, Ülo, Onoda, Yusuke, Ordoñez, Jenny C., Ozinga, Wim A., Penuelas, Josep, Poorter, Hendrik, Poschlod, Peter, Reich, Peter B., Sandel, Brody, Schamp, Brandon, Sheremetev, Serge, and Weiher, Evan more...
- Abstract
The tundra is warming more rapidly than any other biome on Earth, and the potential ramifications are far-reaching because of global feedback effects between vegetation and climate. A better understanding of how environmental factors shape plant structure and function is crucial for predicting the consequences of environmental change for ecosystem functioning. Here we explore the biome-wide relationships between temperature, moisture and seven key plant functional traits both across space and over three decades of warming at 117 tundra locations. Spatial temperature–trait relationships were generally strong but soil moisture had a marked influence on the strength and direction of these relationships, highlighting the potentially important influence of changes in water availability on future trait shifts in tundra plant communities. Community height increased with warming across all sites over the past three decades, but other traits lagged far behind predicted rates of change. Our findings highlight the challenge of using space-for-time substitution to predict the functional consequences of future warming and suggest that functions that are tied closely to plant height will experience the most rapid change. They also reveal the strength with which environmental factors shape biotic communities at the coldest extremes of the planet and will help to improve projections of functional changes in tundra ecosystems with climate warming. more...
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- 2018
39. Publisher Correction to : Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biome (vol 40, pg 2265, 2017)
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Barrio, Isabel C., Lindén, Elin, te Beest, Mariska, Olofsson, Johan, Rocha, Adrian, Soininen, Eeva M., Alatalo, Juha M., Andersson, Tommi, Asmus, Ashley, Boike, Julia, Brathen, Kari Anne, Bryant, John P., Buchwal, Agata, Bueno, C. Guillermo, Christie, Katherine S., Denisova, Yulia V., Egelkraut, Dagmar, Ehrich, Dorothee, Fishback, LeeAnn, Forbes, Bruce C., Gartzia, Maite, Grogan, Paul, Hallinger, Martin, Heijmans, Monique M. P. D., Hik, David S., Hofgaard, Annika, Holmgren, Milena, Høye, Toke T., Huebner, Diane C., Jonsdottir, Ingibjorg Svala, Kaarlejärvi, Elina, Kumpula, Timo, Lange, Cynthia Y. M. J. G., Lange, Jelena, Levesque, Esther, Limpens, Juul, Macias-Fauria, Marc, Myers-Smith, Isla, van Nieukerken, Erik J., Normand, Signe, Post, Eric S., Schmidt, Niels Martin, Sitters, Judith, Skoracka, Anna, Sokolov, Alexander, Sokolova, Natalya, Speed, James D. M., Street, Lorna E., Sundqvist, Maja K., Suominen, Otso, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Uvarov, Sergey A., Watts, David, Wilmking, Martin, Wookey, Philip A., Zimmermann, Heike H., Zverev, Vitali, Kozlov, Mikhail V., Barrio, Isabel C., Lindén, Elin, te Beest, Mariska, Olofsson, Johan, Rocha, Adrian, Soininen, Eeva M., Alatalo, Juha M., Andersson, Tommi, Asmus, Ashley, Boike, Julia, Brathen, Kari Anne, Bryant, John P., Buchwal, Agata, Bueno, C. Guillermo, Christie, Katherine S., Denisova, Yulia V., Egelkraut, Dagmar, Ehrich, Dorothee, Fishback, LeeAnn, Forbes, Bruce C., Gartzia, Maite, Grogan, Paul, Hallinger, Martin, Heijmans, Monique M. P. D., Hik, David S., Hofgaard, Annika, Holmgren, Milena, Høye, Toke T., Huebner, Diane C., Jonsdottir, Ingibjorg Svala, Kaarlejärvi, Elina, Kumpula, Timo, Lange, Cynthia Y. M. J. G., Lange, Jelena, Levesque, Esther, Limpens, Juul, Macias-Fauria, Marc, Myers-Smith, Isla, van Nieukerken, Erik J., Normand, Signe, Post, Eric S., Schmidt, Niels Martin, Sitters, Judith, Skoracka, Anna, Sokolov, Alexander, Sokolova, Natalya, Speed, James D. M., Street, Lorna E., Sundqvist, Maja K., Suominen, Otso, Tananaev, Nikita, Tremblay, Jean-Pierre, Urbanowicz, Christine, Uvarov, Sergey A., Watts, David, Wilmking, Martin, Wookey, Philip A., Zimmermann, Heike H., Zverev, Vitali, and Kozlov, Mikhail V. more...
- Abstract
The above mentioned article was originally scheduled for publication in the special issue on Ecology of Tundra Arthropods with guest editors Toke T. Hoye . Lauren E. Culler. Erroneously, the article was published in Polar Biology, Volume 40, Issue 11, November, 2017. The publisher sincerely apologizes to the guest editors and the authors for the inconvenience caused., Correction to: Barrio, Isabel C., Lindén, Elin, Te Beest, Mariska, Olofsson, Johan et al. Background invertebrate herbivory on dwarf birch (Betula glandulosa-nana complex) increases with temperature and precipitation across the tundra biome. Polar Biology, 40;11. DOI: 10.1007/s00300-017-2139-7 more...
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- 2018
- Full Text
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40. Tundra trait team: a database of plant traits spanning the tundra biome
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Venn, Susanna, Bjorkman, Anne D., Myers‐Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon‐Rosell, Alba, Angers‐Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Björk, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Venn, Susanna, Bjorkman, Anne D., Myers‐Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon‐Rosell, Alba, Angers‐Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Björk, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, and Christie, Katherine more...
- Published
- 2018
41. Plant functional trait change across a warming tundra biome
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Spatial Ecology and Global Change, Environmental Sciences, Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Rüger, Nadja, Beck, Pieter S. A., Blach-Overgaard, Anne, Blok, Daan, Cornelissen, J. Hans C., Forbes, Bruce C., Georges, Damien, Goetz, Scott J., Guay, Kevin C., Henry, Gregory H. R., HilleRisLambers, Janneke, Hollister, Robert D., Karger, Dirk N., Kattge, Jens, Manning, Peter, Prevéy, Janet S., Rixen, Christian, Schaepman-Strub, Gabriela, Thomas, Haydn J. D., Vellend, Mark, Wilmking, Martin, Wipf, Sonja, Carbognani, Michele, Hermanutz, Luise, Lévesque, Esther, Molau, Ulf, Petraglia, Alessandro, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Tomaselli, Marcello, Vowles, Tage, Alatalo, Juha M., Alexander, Heather D., Anadon-Rosell, Alba, Angers-Blondin, Sandra, Beest, Mariska te, Berner, Logan, Björk, Robert G., Buchwal, Agata, Buras, Allan, Christie, Katherine, Cooper, Elisabeth J., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Frei, Esther R., Grau, Oriol, Grogan, Paul, Hallinger, Martin, Harper, Karen A., Heijmans, Monique M. P. D., Hudson, James, Hülber, Karl, Iturrate-Garcia, Maitane, Iversen, Colleen M., Jaroszynska, Francesca, Johnstone, Jill F., Jørgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Little, Chelsea J., Speed, James D. M., Michelsen, Anders, Milbau, Ann, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Rumpf, Sabine B., Semenchuk, Philipp, Shetti, Rohan, Collier, Laura Siegwart, Street, Lorna E., Suding, Katharine N., Tape, Ken D., Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Weijers, Stef, Zamin, Tara, Boulanger-Lapointe, Noémie, Gould, William A., Hik, David S., Hofgaard, Annika, Jónsdóttir, Ingibjörg S., Jorgenson, Janet, Klein, Julia, Magnusson, Borgthor, Tweedie, Craig, Wookey, Philip A., Bahn, Michael, Blonder, Benjamin, van Bodegom, Peter M., Bond-Lamberty, Benjamin, Campetella, Giandiego, Cerabolini, Bruno E. L., Chapin, F. Stuart, Cornwell, William K., Craine, Joseph, Dainese, Matteo, de Vries, Franciska T., Díaz, Sandra, Enquist, Brian J., Green, Walton, Milla, Ruben, Niinemets, Ülo, Onoda, Yusuke, Ordoñez, Jenny C., Ozinga, Wim A., Penuelas, Josep, Poorter, Hendrik, Poschlod, Peter, Reich, Peter B., Sandel, Brody, Schamp, Brandon, Sheremetev, Serge, Weiher, Evan, Spatial Ecology and Global Change, Environmental Sciences, Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Rüger, Nadja, Beck, Pieter S. A., Blach-Overgaard, Anne, Blok, Daan, Cornelissen, J. Hans C., Forbes, Bruce C., Georges, Damien, Goetz, Scott J., Guay, Kevin C., Henry, Gregory H. R., HilleRisLambers, Janneke, Hollister, Robert D., Karger, Dirk N., Kattge, Jens, Manning, Peter, Prevéy, Janet S., Rixen, Christian, Schaepman-Strub, Gabriela, Thomas, Haydn J. D., Vellend, Mark, Wilmking, Martin, Wipf, Sonja, Carbognani, Michele, Hermanutz, Luise, Lévesque, Esther, Molau, Ulf, Petraglia, Alessandro, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Tomaselli, Marcello, Vowles, Tage, Alatalo, Juha M., Alexander, Heather D., Anadon-Rosell, Alba, Angers-Blondin, Sandra, Beest, Mariska te, Berner, Logan, Björk, Robert G., Buchwal, Agata, Buras, Allan, Christie, Katherine, Cooper, Elisabeth J., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Frei, Esther R., Grau, Oriol, Grogan, Paul, Hallinger, Martin, Harper, Karen A., Heijmans, Monique M. P. D., Hudson, James, Hülber, Karl, Iturrate-Garcia, Maitane, Iversen, Colleen M., Jaroszynska, Francesca, Johnstone, Jill F., Jørgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Little, Chelsea J., Speed, James D. M., Michelsen, Anders, Milbau, Ann, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Rumpf, Sabine B., Semenchuk, Philipp, Shetti, Rohan, Collier, Laura Siegwart, Street, Lorna E., Suding, Katharine N., Tape, Ken D., Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Weijers, Stef, Zamin, Tara, Boulanger-Lapointe, Noémie, Gould, William A., Hik, David S., Hofgaard, Annika, Jónsdóttir, Ingibjörg S., Jorgenson, Janet, Klein, Julia, Magnusson, Borgthor, Tweedie, Craig, Wookey, Philip A., Bahn, Michael, Blonder, Benjamin, van Bodegom, Peter M., Bond-Lamberty, Benjamin, Campetella, Giandiego, Cerabolini, Bruno E. L., Chapin, F. Stuart, Cornwell, William K., Craine, Joseph, Dainese, Matteo, de Vries, Franciska T., Díaz, Sandra, Enquist, Brian J., Green, Walton, Milla, Ruben, Niinemets, Ülo, Onoda, Yusuke, Ordoñez, Jenny C., Ozinga, Wim A., Penuelas, Josep, Poorter, Hendrik, Poschlod, Peter, Reich, Peter B., Sandel, Brody, Schamp, Brandon, Sheremetev, Serge, and Weiher, Evan more...
- Published
- 2018
42. Tundra Trait Team: A database of plant traits spanning the tundra biome
- Author
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Spatial Ecology and Global Change, Environmental Sciences, Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Björk, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S., Cooper, Elisabeth J., Cornelissen, J. Hans C., Dickinson, Katharine J. M., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C., Frei, Esther R., Iturrate-Garcia, Maitane, Good, Megan K., Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hájek, Tomáš, Hallinger, Martin, Happonen, Konsta, Harper, Karen A., Heijmans, Monique M. P. D., Henry, Gregory H. R., Hermanutz, Luise, Hewitt, Rebecca E., Hollister, Robert D., Hudson, James, Hülber, Karl, Iversen, Colleen M., Jaroszynska, Francesca, Jiménez-Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Klimešová, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J., Lévesque, Esther, Little, Chelsea J., Luoto, Miska, Macek, Petr, Mack, Michelle C., Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W., Mörsdorf, Martin Alfons, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Petraglia, Alessandro, Pickering, Catherine, Prevéy, Janet S., Rixen, Christian, Rumpf, Sabine B., Schaepman-Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Speed, James David Mervyn, Street, Lorna E., Suding, Katharine, Tape, Ken D., Tomaselli, Marcello, Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Virkkala, Anna-Maria, Vowles, Tage, Weijers, Stef, Wilmking, Martin, Wipf, Sonja, Zamin, Tara, Spatial Ecology and Global Change, Environmental Sciences, Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Björk, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S., Cooper, Elisabeth J., Cornelissen, J. Hans C., Dickinson, Katharine J. M., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C., Frei, Esther R., Iturrate-Garcia, Maitane, Good, Megan K., Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hájek, Tomáš, Hallinger, Martin, Happonen, Konsta, Harper, Karen A., Heijmans, Monique M. P. D., Henry, Gregory H. R., Hermanutz, Luise, Hewitt, Rebecca E., Hollister, Robert D., Hudson, James, Hülber, Karl, Iversen, Colleen M., Jaroszynska, Francesca, Jiménez-Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Klimešová, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J., Lévesque, Esther, Little, Chelsea J., Luoto, Miska, Macek, Petr, Mack, Michelle C., Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W., Mörsdorf, Martin Alfons, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Petraglia, Alessandro, Pickering, Catherine, Prevéy, Janet S., Rixen, Christian, Rumpf, Sabine B., Schaepman-Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Speed, James David Mervyn, Street, Lorna E., Suding, Katharine, Tape, Ken D., Tomaselli, Marcello, Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Virkkala, Anna-Maria, Vowles, Tage, Weijers, Stef, Wilmking, Martin, Wipf, Sonja, and Zamin, Tara more...
- Published
- 2018
43. Temperature modulates intra-plant growth of Salix polaris from a high Arctic site (Svalbard)
- Author
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Buchwal, Agata, Rachlewicz, Grzegorz, Fonti, Patrick, Cherubini, Paolo, Gärtner, Holger, Buchwal, Agata, Rachlewicz, Grzegorz, Fonti, Patrick, Cherubini, Paolo, and Gärtner, Holger
- Abstract
Arctic ecosystems are important carbon sinks. Increasing temperatures in these regions might stimulate soil carbon release. Evidence suggests that deciduous shrubs might counteract these carbon losses because they positively respond to increasing temperature, but their role in ecosystem carbon budgets remains uncertain. Many studies dealing with large-scale tundra greening and carbon sequestration in relation to increasing temperature have usually based their estimations on the aboveground components, but very little is known about belowground growth. In this context, annual rings can provide a retrospective insight into intra-plant temperature responses and seasonal growth allocation. This study presents a 70-year-long and annually resolved intra-plant analysis of ring width and missing ring distribution from a comprehensive serial sectioning, including 142 cross-sections and the measurements of 471 radii from ten Salix polaris Wahlenb. dwarf shrubs growing in the high Arctic on Svalbard. Results indicate a high intra-plant and inter-annual growth variation, characterized by a high proportion of partially (13.6%) and completely (11.2%) missing rings. The annual growth and the frequency of completely missing rings were evenly distributed inside the plant and mainly controlled by summer temperatures. Radial growth in the belowground parts appeared to be proportionally higher during long and warm summers and lower in cold early growing seasons than in the aboveground parts. The results reveal a diverging allocation between aboveground and belowground growth depending on the climatic conditions. Favorable years promoted root allocation since root radial growth occurs after aboveground growth. The observed belowground responses suggest that shrub carbon allocation might be higher than estimated only from the aboveground compartments more...
- Published
- 2018
44. Do growth rings of a high-arctic shrub represent past primary production?
- Author
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Moullec, Mathilde Le, Buchwal, Agata, Wal, Rene Van Der, Sandal, Lisa, and Brage Bremset Hansen
- Published
- 2017
- Full Text
- View/download PDF
45. Declining growth of deciduous shrubs in the warming climate of continental western Greenland
- Author
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Gamm, Cassandra M., primary, Sullivan, Patrick F., additional, Buchwal, Agata, additional, Dial, Roman J., additional, Young, Amanda B., additional, Watts, David A., additional, Cahoon, Sean M. P., additional, Welker, Jeffrey M., additional, and Post, Eric, additional more...
- Published
- 2017
- Full Text
- View/download PDF
46. High Arctic summer warming tracked by increased Cassiope tetragona growth in the world's northernmost polar desert
- Author
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Weijers, Stef, primary, Buchwal, Agata, additional, Blok, Daan, additional, Löffler, Jörg, additional, and Elberling, Bo, additional
- Published
- 2017
- Full Text
- View/download PDF
47. High Arctic summer warming tracked by increased Cassiope tetragona growth in the world's northernmost polar desert
- Author
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Weijers, Stef, Buchwal, Agata, Blok, Daan, Loeffler, Joerg, Elberling, Bo, Weijers, Stef, Buchwal, Agata, Blok, Daan, Loeffler, Joerg, and Elberling, Bo
- Published
- 2017
48. Tree rings and volcanic cooling
- Author
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Krusic, Paul J., Luckman, Brian, Shashkin, Alexander V., Grudd, Håkan, Buchwal, Agata, Evans, Michael N., Cook, Edward R., Kirdyanov, Alexander V., Briffa, Keith R., Salzer, Matthew W., Gunnarson, Björn E., Vaganov, Eugene A., Büntgen, Ulf, Anchukaitis, Kevin J., Wilson, Rob J.S., Breitenmoser, Petra, Frank, David, Körner, Christian, D'Arrigo, Rosanne D., Melvin, Thomas M., Esper, Jan, Hughes, Malcolm K., and Timmreck, Claudia more...
- Published
- 2012
- Full Text
- View/download PDF
49. Tree rings and volcanic cooling
- Author
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Anchukaitis, Kevin, Breitenmoser, Petra, Briffa, Keith R., Buchwal, Agata, B��ntgen, Ulf, Cook, Edward R., D'Arrigo, Rosanne Dorothy, Evans, Michael N., Frank, David, Grudd, H��kan, Gunnarson, Bj��rn E., Hughes, Malcolm K., Krusic, Paul J., Kirdyanov, Alexander V., K��rner, Christian, Luckman, Brian, Melvin, Thomas M., Salzer, Matthew W., Shashkin, Alexander V., Timmreck, Claudia, Vaganov, Eugene A., and Wilson, Robert J. more...
- Subjects
Climatic changes - Abstract
Comment on Mann, M. E., Fuentes, J. D. & Rutherford, S. Nature Geosci. 5, 202���205 (2012).
- Published
- 2012
- Full Text
- View/download PDF
50. TITLE: Sedimentary Record and Morphological Effects of a Landslide-Generated Tsunami in a Polar Region: The 2000 AD Tsunami in Vaigat Strait, West Greenland AUTHORS (FIRST NAME, LAST NAME)
- Author
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Szczucinski, Witold, Rosser, Nick J, Strzelecki, Mateusz C, Long, Antony J, Lawrence, Thomas, Buchwal, Agata, Chague-Goff, Catherine, and Woodroffe, Sarah
- Published
- 2012
- Full Text
- View/download PDF
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