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15 results on '"Anadon‐Rosell, A. (A.)"'

2. Iterative Next Boundary Detection for Instance Segmentation of Tree Rings in Microscopy Images of Shrub Cross Sections

Author

Gillert, Alexander, Resente, Giulia, Anadon-Rosell, Alba, Wilmking, Martin, and von Lukas, Uwe Freiherr

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

We address the problem of detecting tree rings in microscopy images of shrub cross sections. This can be regarded as a special case of the instance segmentation task with several unique challenges such as the concentric circular ring shape of the objects and high precision requirements that result in inadequate performance of existing methods. We propose a new iterative method which we term Iterative Next Boundary Detection (INBD). It intuitively models the natural growth direction, starting from the center of the shrub cross section and detecting the next ring boundary in each iteration step. In our experiments, INBD shows superior performance to generic instance segmentation methods and is the only one with a built-in notion of chronological order. Our dataset and source code are available at http://github.com/alexander-g/INBD., Comment: CVPR 2023

Published
2022

4. Plant traits poorly predict winner and loser shrub species in a warming tundra biome

Author

García Criado, Mariana, Myers-Smith, Isla H., Bjorkman, Anne D., Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J. D., Eskelinen, Anu, Happonen, Konsta, Alatalo, Juha M., Anadon-Rosell, Alba, Aubin, Isabelle, te Beest, Mariska, Betway-May, Katlyn R., Blok, Daan, Buras, Allan, Cerabolini, Bruno E. L., Christie, Katherine, Cornelissen, J. Hans C., Forbes, Bruce C., Frei, Esther R., Grogan, Paul, Hermanutz, Luise, Hollister, Robert D., Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina, Kleyer, Michael, Lamarque, Laurent J., Lembrechts, Jonas J., Lévesque, Esther, Luoto, Miska, Macek, Petr, May, Jeremy L., Prevéy, Janet S., Schaepman-Strub, Gabriela, Sheremetiev, Serge N., Siegwart Collier, Laura, Soudzilovskaia, Nadejda A., Trant, Andrew, Venn, Susanna E., and Virkkala, Anna-Maria

Published
2023
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5. Plant traits poorly predict winner and loser shrub species in a warming tundra biome

Author

Mariana García Criado, Isla H. Myers-Smith, Anne D. Bjorkman, Signe Normand, Anne Blach-Overgaard, Haydn J. D. Thomas, Anu Eskelinen, Konsta Happonen, Juha M. Alatalo, Alba Anadon-Rosell, Isabelle Aubin, Mariska te Beest, Katlyn R. Betway-May, Daan Blok, Allan Buras, Bruno E. L. Cerabolini, Katherine Christie, J. Hans C. Cornelissen, Bruce C. Forbes, Esther R. Frei, Paul Grogan, Luise Hermanutz, Robert D. Hollister, James Hudson, Maitane Iturrate-Garcia, Elina Kaarlejärvi, Michael Kleyer, Laurent J. Lamarque, Jonas J. Lembrechts, Esther Lévesque, Miska Luoto, Petr Macek, Jeremy L. May, Janet S. Prevéy, Gabriela Schaepman-Strub, Serge N. Sheremetiev, Laura Siegwart Collier, Nadejda A. Soudzilovskaia, Andrew Trant, Susanna E. Venn, and Anna-Maria Virkkala

Subjects
Science
Abstract

Abstract Climate change is leading to species redistributions. In the tundra biome, shrubs are generally expanding, but not all tundra shrub species will benefit from warming. Winner and loser species, and the characteristics that may determine success or failure, have not yet been fully identified. Here, we investigate whether past abundance changes, current range sizes and projected range shifts derived from species distribution models are related to plant trait values and intraspecific trait variation. We combined 17,921 trait records with observed past and modelled future distributions from 62 tundra shrub species across three continents. We found that species with greater variation in seed mass and specific leaf area had larger projected range shifts, and projected winner species had greater seed mass values. However, trait values and variation were not consistently related to current and projected ranges, nor to past abundance change. Overall, our findings indicate that abundance change and range shifts will not lead to directional modifications in shrub trait composition, since winner and loser species share relatively similar trait spaces.

Published
2023
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7. Growth and Wood Trait Relationships of Alnus glutinosa in Peatland Forest Stands With Contrasting Water Regimes

Author

Alba Anadon-Rosell, Tobias Scharnweber, Georg von Arx, Richard L. Peters, Marko Smiljanić, Simon Weddell, and Martin Wilmking

Subjects
alder carr, hydraulic traits, peatland restoration, waterlogging, wet forest, wood density, Plant culture, SB1-1110
Abstract

Human-driven peatland drainage has occurred in Europe for centuries, causing habitat degradation and leading to the emission of greenhouse gases. As such, in the last decades, there has been an increase in policies aiming at restoring these habitats through rewetting. Alder (Alnus glutinosa L.) is a widespread species in temperate forest peatlands with a seemingly high waterlogging tolerance. Yet, little is known about its specific response in growth and wood traits relevant for tree functioning when dealing with changing water table levels. In this study, we investigated the effects of rewetting and extreme flooding on alder growth and wood traits in a peatland forest in northern Germany. We took increment cores from several trees at a drained and a rewetted stand and analyzed changes in ring width, wood density, and xylem anatomical traits related to the hydraulic functioning, growth, and mechanical support for the period 1994–2018. This period included both the rewetting action and an extreme flooding event. We additionally used climate-growth and climate-density correlations to identify the stand-specific responses to climatic conditions. Our results showed that alder growth declined after an extreme flooding in the rewetted stand, whereas the opposite occurred in the drained stand. These changes were accompanied by changes in wood traits related to growth (i.e., number of vessels), but not in wood density and hydraulic-related traits. We found poor climate-growth and climate-density correlations, indicating that water table fluctuations have a stronger effect than climate on alder growth. Our results show detrimental effects on the growth of sudden water table changes leading to permanent waterlogging, but little implications for its wood density and hydraulic architecture. Rewetting actions should thus account for the loss of carbon allocation into wood and ensure suitable conditions for alder growth in temperate peatland forests.

Published
2022
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9. Plant traits poorly predict winner and loser shrub species in a warming tundra biome

Author

Sustainability Science and Education, Spatial Ecology and Global Change, Environmental Sciences, García Criado, Mariana, Myers-Smith, Isla H., Bjorkman, Anne D., Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J. D., Eskelinen, Anu, Happonen, Konsta, Alatalo, Juha M., Anadon-Rosell, Alba, Aubin, Isabelle, te Beest, Mariska, Betway-May, Katlyn R., Blok, Daan, Buras, Allan, Cerabolini, Bruno E. L., Christie, Katherine, Cornelissen, J. Hans C., Forbes, Bruce C., Frei, Esther R., Grogan, Paul, Hermanutz, Luise, Hollister, Robert D., Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina, Kleyer, Michael, Lamarque, Laurent J., Lembrechts, Jonas J., Lévesque, Esther, Luoto, Miska, Macek, Petr, May, Jeremy L., Prevéy, Janet S., Schaepman-Strub, Gabriela, Sheremetiev, Serge N., Siegwart Collier, Laura, Soudzilovskaia, Nadejda A., Trant, Andrew, Venn, Susanna E., Virkkala, Anna-Maria, Sustainability Science and Education, Spatial Ecology and Global Change, Environmental Sciences, García Criado, Mariana, Myers-Smith, Isla H., Bjorkman, Anne D., Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J. D., Eskelinen, Anu, Happonen, Konsta, Alatalo, Juha M., Anadon-Rosell, Alba, Aubin, Isabelle, te Beest, Mariska, Betway-May, Katlyn R., Blok, Daan, Buras, Allan, Cerabolini, Bruno E. L., Christie, Katherine, Cornelissen, J. Hans C., Forbes, Bruce C., Frei, Esther R., Grogan, Paul, Hermanutz, Luise, Hollister, Robert D., Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina, Kleyer, Michael, Lamarque, Laurent J., Lembrechts, Jonas J., Lévesque, Esther, Luoto, Miska, Macek, Petr, May, Jeremy L., Prevéy, Janet S., Schaepman-Strub, Gabriela, Sheremetiev, Serge N., Siegwart Collier, Laura, Soudzilovskaia, Nadejda A., Trant, Andrew, Venn, Susanna E., and Virkkala, Anna-Maria

Published
2023

10. Plant traits poorly predict winner and loser shrub species in a warming tundra biome

Author

García Criado, M., Myers-Smith, I.H., Bjorkman, A.D., Normand, S., Blach-Overgaard, A., Thomas, H.J.D., Eskelinen, Anu Maria, Happonen, K., Alatalo, J.M., Anadon-Rosell, A., Aubin, I., te Beest, M., Betway-May, K.R., Blok, D., Buras, A., Cerabolini, B.E.L., Christie, K., Cornelissen, J.H.C., Forbes, B.C., Frei, E.R., Grogan, P., Hermanutz, L., Hollister, R.D., Hudson, J., Iturrate-Garcia, M., Kaarlejärvi, E., Kleyer, M., Lamarque, L.J., Lembrechts, J.J., Lévesque, E., Luoto, M., Macek, P., May, J.L., Prevéy, J.S., Schaepman-Strub, G., Sheremetiev, S.N., Siegwart Collier, L., Soudzilovskaia, N.A., Trant, A., Venn, S.E., Virkkala, A.-M., García Criado, M., Myers-Smith, I.H., Bjorkman, A.D., Normand, S., Blach-Overgaard, A., Thomas, H.J.D., Eskelinen, Anu Maria, Happonen, K., Alatalo, J.M., Anadon-Rosell, A., Aubin, I., te Beest, M., Betway-May, K.R., Blok, D., Buras, A., Cerabolini, B.E.L., Christie, K., Cornelissen, J.H.C., Forbes, B.C., Frei, E.R., Grogan, P., Hermanutz, L., Hollister, R.D., Hudson, J., Iturrate-Garcia, M., Kaarlejärvi, E., Kleyer, M., Lamarque, L.J., Lembrechts, J.J., Lévesque, E., Luoto, M., Macek, P., May, J.L., Prevéy, J.S., Schaepman-Strub, G., Sheremetiev, S.N., Siegwart Collier, L., Soudzilovskaia, N.A., Trant, A., Venn, S.E., and Virkkala, A.-M.

Abstract

Climate change is leading to species redistributions. In the tundra biome, shrubs are generally expanding, but not all tundra shrub species will benefit from warming. Winner and loser species, and the characteristics that may determine success or failure, have not yet been fully identified. Here, we investigate whether past abundance changes, current range sizes and projected range shifts derived from species distribution models are related to plant trait values and intraspecific trait variation. We combined 17,921 trait records with observed past and modelled future distributions from 62 tundra shrub species across three continents. We found that species with greater variation in seed mass and specific leaf area had larger projected range shifts, and projected winner species had greater seed mass values. However, trait values and variation were not consistently related to current and projected ranges, nor to past abundance change. Overall, our findings indicate that abundance change and range shifts will not lead to directional modifications in shrub trait composition, since winner and loser species share relatively similar trait spaces.

Published
2023

11. Plant traits poorly predict winner and loser shrub species in a warming tundra biome

Author

García Criado, Mariana; https://orcid.org/0000-0001-7480-6144, Myers-Smith, Isla H; https://orcid.org/0000-0002-8417-6112, Bjorkman, Anne D; https://orcid.org/0000-0003-2174-7800, Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J D; https://orcid.org/0000-0001-9099-6304, Eskelinen, Anu; https://orcid.org/0000-0003-1707-5263, Happonen, Konsta, Alatalo, Juha M; https://orcid.org/0000-0001-5084-850X, Anadon-Rosell, Alba; https://orcid.org/0000-0002-9447-7795, Aubin, Isabelle; https://orcid.org/0000-0002-5953-1012, te Beest, Mariska; https://orcid.org/0000-0003-3673-4105, Betway-May, Katlyn R; https://orcid.org/0000-0001-5594-3047, Blok, Daan; https://orcid.org/0000-0003-2703-9303, Buras, Allan; https://orcid.org/0000-0003-2179-0681, Cerabolini, Bruno E L; https://orcid.org/0000-0002-3793-0733, Christie, Katherine; https://orcid.org/0000-0002-4124-0700, Cornelissen, J Hans C; https://orcid.org/0000-0002-2346-1585, Forbes, Bruce C; https://orcid.org/0000-0002-4593-5083, Frei, Esther R; https://orcid.org/0000-0003-1910-7900, Grogan, Paul; https://orcid.org/0000-0002-7379-875X, Hermanutz, Luise; https://orcid.org/0000-0003-0706-7067, Hollister, Robert D; https://orcid.org/0000-0002-4764-7691, Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina; https://orcid.org/0000-0003-0014-0073, Kleyer, Michael, Lamarque, Laurent J; https://orcid.org/0000-0002-1430-5193, Lembrechts, Jonas J, Lévesque, Esther; https://orcid.org/0000-0002-1119-6032, et al, García Criado, Mariana; https://orcid.org/0000-0001-7480-6144, Myers-Smith, Isla H; https://orcid.org/0000-0002-8417-6112, Bjorkman, Anne D; https://orcid.org/0000-0003-2174-7800, Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J D; https://orcid.org/0000-0001-9099-6304, Eskelinen, Anu; https://orcid.org/0000-0003-1707-5263, Happonen, Konsta, Alatalo, Juha M; https://orcid.org/0000-0001-5084-850X, Anadon-Rosell, Alba; https://orcid.org/0000-0002-9447-7795, Aubin, Isabelle; https://orcid.org/0000-0002-5953-1012, te Beest, Mariska; https://orcid.org/0000-0003-3673-4105, Betway-May, Katlyn R; https://orcid.org/0000-0001-5594-3047, Blok, Daan; https://orcid.org/0000-0003-2703-9303, Buras, Allan; https://orcid.org/0000-0003-2179-0681, Cerabolini, Bruno E L; https://orcid.org/0000-0002-3793-0733, Christie, Katherine; https://orcid.org/0000-0002-4124-0700, Cornelissen, J Hans C; https://orcid.org/0000-0002-2346-1585, Forbes, Bruce C; https://orcid.org/0000-0002-4593-5083, Frei, Esther R; https://orcid.org/0000-0003-1910-7900, Grogan, Paul; https://orcid.org/0000-0002-7379-875X, Hermanutz, Luise; https://orcid.org/0000-0003-0706-7067, Hollister, Robert D; https://orcid.org/0000-0002-4764-7691, Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina; https://orcid.org/0000-0003-0014-0073, Kleyer, Michael, Lamarque, Laurent J; https://orcid.org/0000-0002-1430-5193, Lembrechts, Jonas J, Lévesque, Esther; https://orcid.org/0000-0002-1119-6032, and et al

Abstract

Climate change is leading to species redistributions. In the tundra biome, shrubs are generally expanding, but not all tundra shrub species will benefit from warming. Winner and loser species, and the characteristics that may determine success or failure, have not yet been fully identified. Here, we investigate whether past abundance changes, current range sizes and projected range shifts derived from species distribution models are related to plant trait values and intraspecific trait variation. We combined 17,921 trait records with observed past and modelled future distributions from 62 tundra shrub species across three continents. We found that species with greater variation in seed mass and specific leaf area had larger projected range shifts, and projected winner species had greater seed mass values. However, trait values and variation were not consistently related to current and projected ranges, nor to past abundance change. Overall, our findings indicate that abundance change and range shifts will not lead to directional modifications in shrub trait composition, since winner and loser species share relatively similar trait spaces.

Published
2023

12. Iterative Next Boundary Detection for Instance Segmentation of Tree Rings in Microscopy Images of Shrub Cross Sections

Author

Gillert, Alexander, Resente, Giulia, Anadon-Rosell, Alba, Wilmking, Martin, and Lukas, Uwe Freiherr Von

Subjects
Research Line: Computer vision (CV), Branche: Bioeconomics and Infrastructure, Research Line: Machine learning (ML), Biological processes, Environmental monitoring, Environmental problems, LTA: Scalable architectures for massive data sets, LTA: Machine intelligence, algorithms, and data structures (incl. semantics)
Abstract

We address the problem of detecting tree rings in microscopy images of shrub cross sections. This can be regarded as a special case of the instance segmentation task with several unique challenges such as the concentric circular ring shape of the objects and high precision requirements that result in inadequate performance of existing methods. We propose a new iterative method which we term Iterative Next Boundary Detection (INBD). It intuitively models the natural growth direction, starting from the center of the shrub cross section and detecting the next ring boundary in each iteration step. In our experiments, INBD shows superior performance to generic instance segmentation methods and is the only one with a built-in notion of chronological order. Our dataset and source code are available at http://github.com/alexander-g/INBD.

Published
2023
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13. Plant traits poorly predict winner and loser shrub species in a warming tundra biome

Author

García Criado, Mariana, primary, Myers-Smith, Isla, additional, Bjorkman, Anne, additional, Normand, Signe, additional, Blach-Overgaard, Anne, additional, Thomas, Haydn, additional, Eskelinen, Anu, additional, Happonen, Konsta, additional, Alatalo, Juha, additional, Anadon-Rosell, Alba, additional, Aubin, Isabelle, additional, te Beest, Mariska, additional, Betway-May, Katlyn, additional, Blok, Daan, additional, Buras, Allan, additional, Cerabolini, Bruno, additional, Christie, Katherine, additional, Cornelissen, J. Hans, additional, Forbes, Bruce, additional, Frei, Esther, additional, Grogan, Paul, additional, Hermanutz, Luise, additional, Hollister, Robert, additional, Hudson, James, additional, Iturrate-Garcia, Maitane, additional, Kaarlejärvi, Elina, additional, Kleyer, Michael, additional, Lamarque, Laurent, additional, Lembrechts, Jonas, additional, Lévesque, Esther, additional, Luoto, Miska, additional, Macek, Petr, additional, May, Jeremy, additional, Prevéy, Janet, additional, Schaepman-Strub, Gabriela, additional, Sheremetiev, Serge, additional, Siegwart Collier, Laura, additional, Soudzilovskaia, Nadia, additional, Trant, Andrew, additional, Venn, Susanna, additional, and Virkkala, Anna-Maria, additional

Published
2022
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15. Towards women-inclusive ecology: Representation, behavior, and perception of women at an international conference

Author

Lupon, Anna, primary, Rodríguez-Lozano, Pablo, additional, Bartrons, Mireia, additional, Anadon-Rosell, Alba, additional, Batalla, Meritxell, additional, Bernal, Susana, additional, Bravo, Andrea G., additional, Capdevila, Pol, additional, Cañedo-Argüelles, Miguel, additional, Catalán, Núria, additional, Genua-Olmedo, Ana, additional, Gutiérrez-Cánovas, Cayetano, additional, Feio, Maria João, additional, Lucati, Federica, additional, Onandia, Gabriela, additional, Poblador, Sílvia, additional, Rotchés-Ribalta, Roser, additional, Sala-Bubaré, Anna, additional, Sánchez-Montoya, María Mar, additional, Sebastián, Marta, additional, Zufiaurre, Aitziber, additional, and Pastor, Ada, additional

Published
2021
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