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17 results on '"Urrutia‐Jalabert, Rocío"'

2. The global spectrum of plant form and function: enhanced species-level trait dataset

Author

Díaz, Sandra, Kattge, Jens, Cornelissen, Johannes H. C., Wright, Ian J., Lavorel, Sandra, Dray, Stéphane, Reu, Björn, Kleyer, Michael, Wirth, Christian, Prentice, I. Colin, Garnier, Eric, Bönisch, Gerhard, Westoby, Mark, Poorter, Hendrik, Reich, Peter B., Moles, Angela T., Dickie, John, Zanne, Amy E., Chave, Jérôme, Wright, S. Joseph, Sheremetiev, Serge N., Jactel, Hervé, Baraloto, Christopher, Cerabolini, Bruno E. L., Pierce, Simon, Shipley, Bill, Casanoves, Fernando, Joswig, Julia S., Günther, Angela, Falczuk, Valeria, Rüger, Nadja, Mahecha, Miguel D., Gorné, Lucas D., Amiaud, Bernard, Atkin, Owen K., Bahn, Michael, Baldocchi, Dennis, Beckmann, Michael, Blonder, Benjamin, Bond, William, Bond-Lamberty, Ben, Brown, Kerry, Burrascano, Sabina, Byun, Chaeho, Campetella, Giandiego, Cavender-Bares, Jeannine, Chapin, III, F. Stuart, Choat, Brendan, Coomes, David Anthony, Cornwell, William K., Craine, Joseph, Craven, Dylan, Dainese, Matteo, de Araujo, Alessandro Carioca, de Vries, Franciska T., Domingues, Tomas Ferreira, Enquist, Brian J., Fagúndez, Jaime, Fang, Jingyun, Fernández-Méndez, Fernando, Fernandez-Piedade, Maria T., Ford, Henry, Forey, Estelle, Freschet, Gregoire T., Gachet, Sophie, Gallagher, Rachael, Green, Walton, Guerin, Greg R., Gutiérrez, Alvaro G., Harrison, Sandy P., Hattingh, Wesley Neil, He, Tianhua, Hickler, Thomas, Higgins, Steven I., Higuchi, Pedro, Ilic, Jugo, Jackson, Robert B., Jalili, Adel, Jansen, Steven, Koike, Fumito, König, Christian, Kraft, Nathan, Kramer, Koen, Kreft, Holger, Kühn, Ingolf, Kurokawa, Hiroko, Lamb, Eric G., Laughlin, Daniel C., Leishman, Michelle, Lewis, Simon, Louault, Frédérique, Malhado, Ana C. M., Manning, Peter, Meir, Patrick, Mencuccini, Maurizio, Messier, Julie, Miller, Regis, Minden, Vanessa, Molofsky, Jane, Montgomery, Rebecca, Montserrat-Martí, Gabriel, Moretti, Marco, Müller, Sandra, Niinemets, Ülo, Ogaya, Romà, Öllerer, Kinga, Onipchenko, Vladimir, Onoda, Yusuke, Ozinga, Wim A., Pausas, Juli G., Peco, Begoña, Penuelas, Josep, Pillar, Valério D., Pladevall, Clara, Römermann, Christine, Sack, Lawren, Salinas, Norma, Sandel, Brody, Sardans, Jordi, Schamp, Brandon, Scherer-Lorenzen, Michael, Schulze, Ernst-Detlef, Schweingruber, Fritz, Shiodera, Satomi, Sosinski, Ênio, Soudzilovskaia, Nadejda, Spasojevic, Marko J., Swaine, Emily, Swenson, Nathan, Tautenhahn, Susanne, Thompson, Ken, Totte, Alexia, Urrutia-Jalabert, Rocío, Valladares, Fernando, van Bodegom, Peter, Vasseur, François, Verheyen, Kris, Vile, Denis, Violle, Cyrille, von Holle, Betsy, Weigelt, Patrick, Weiher, Evan, Wiemann, Michael C., Williams, Mathew, Wright, Justin, and Zotz, Gerhard

Published
2022
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3. Six hundred years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century

Author

Morales, Mariano S., Cook, Edward R., Barichivich, Jonathan, Christie, Duncan A., Villalba, Ricardo, LeQuesne, Carlos, Srur, Ana M., Ferrero, M. Eugenia, González-Reyes, Álvaro, Couvreux, Fleur, Matskovsky, Vladimir, Aravena, Juan C., Lara, Antonio, Mundo, Ignacio A., Rojas, Facundo, Prieto, María R., Smerdon, Jason E., Bianchi, Lucas O., Masiokas, Mariano H., Urrutia-Jalabert, Rocio, Rodriguez-Catón, Milagros, Muñoz, Ariel A., Rojas-Badilla, Moises, Alvarez, Claudio, Lopez, Lidio, Luckman, Brian H., Lister, David, Harris, Ian, Jones, Philip D., Williams, A. Park, Velazquez, Gonzalo, Aliste, Diego, Aguilera-Betti, Isabella, Marcotti, Eugenia, Flores, Felipe, Muñoz, Tomás, Cuq, Emilio, and Boninsegna, José A.

Published
2020

4. Chile’s road plans threaten ancient forests

Author

Urrutia-Jalabert, Rocío, Barichivich, Jonathan, Gutiérrez, Álvaro, Miranda, Alejandro, Universidad de Aysén, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Modélisation des Surfaces et Interfaces Continentales (MOSAIC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Universidad de Chile = University of Chile [Santiago] (UCHILE), and Universidad de la frontera [Chile]

Subjects
[SDU]Sciences of the Universe [physics]
Published
2023

8. Carbon stocks across different environments, disturbance regimes, and stand age in Fitzroya cupressoides forests, the longest-lived species of the southern hemisphere

Author

González, Mauro E., Lara, Antonio, Urrutia-Jalabert, Rocío, Bustos-Salazar, Angela, Ruiz-Gómez, Carolina, and Aravena, Juan C.

Subjects
Global and Planetary Change, Ecology, Forestry, Environmental Science (miscellaneous), Nature and Landscape Conservation
Abstract

Forest disturbances influence Fitzroya cupressoides forest structure and carbon stocks at multiple spatial and temporal scales. Natural disturbances such as landslides and volcanism affect and give rise to the mostly pristine Fitzroya stands present in the Andean cordillera. On the other hand, mostly human-caused fires and logging have been the main processes shaping the structure of Fitzroya stands in the Coastal range and of Fitzroya small remnants in the Central depression. The main goal of this study was to assess the carbon stocks and accumulation rates of Fitzroya forest stands according to their development stage under different disturbance regimes and environmental conditions given by the three physiographic units where the species grows (Coastal range, Central depression, and Andean range). The site selection included an age sequence of stands, known as a chronosequence approach. We identified Fitzroya post-disturbance stands in three different stages of development: young forest stage (mean stand age of the main cohort ≤ 200 years old), mature forest stage (200–800 years old), and old growth forest stage (800–1,500 years old). The following biomass components were considered: living standing trees, dead standing trees (snags), and logs from dead trees laying on the ground (coarse woody debris). Old-growth Fitzroya forests reached a mean total carbon stock (standing live trees, snags, and coarse woody debris) of 507, 279, and 331 Mg C ha−1 in the Andean and Coastal ranges, and Central depression, respectively. Fitzroya cupressoides contributes, in average, more than 80% to the total carbon stock in the Andean and Coastal ranges, and 63% in the Central depression. The remainder corresponds mainly to Nothofagus spp. The high carbon stocks in old-growth stands in the Andean range are explained by Fitzroya longevity, larger size, wood decay resistance, and the low recurrence of volcanic events. Carbon accumulation rates differ between the forests in the three physiographic units (Central depression>Andean range>Coastal range), mainly due to the different growth rates and environmental conditions present in each unit. In the context of climate change, conserving old-growth stands with large biomass and carbon stocks and restoring Fitzroya forests should be recognized as a key contribution toward national and global goals to mitigate global warming.

Published
2022

12. Streamflow variability in the Chilean Temperate-Mediterranean climate transition (35°S–42°S) during the last 400 years inferred from tree-ring records

Author

Muñoz, Ariel A., primary, González-Reyes, Alvaro, additional, Lara, Antonio, additional, Sauchyn, David, additional, Christie, Duncan, additional, Puchi, Paulina, additional, Urrutia-Jalabert, Rocío, additional, Toledo-Guerrero, Isadora, additional, Aguilera-Betti, Isabella, additional, Mundo, Ignacio, additional, Sheppard, Paul R., additional, Stahle, Daniel, additional, Villalba, Ricardo, additional, Szejner, Paul, additional, LeQuesne, Carlos, additional, and Vanstone, Jessica, additional

Published
2016
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15. Ecophysiological Responses of Nothofagus obliquaForests to Recent Climate Drying Across the Mediterranean‐Temperate Biome Transition in South‐Central Chile

Author

Urrutia‐Jalabert, Rocío, Barichivich, Jonathan, Szejner, Paul, Rozas, Vicente, and Lara, Antonio

Abstract

The forests of south‐central Chile are facing a drying climate and a megadrought that started in 2010. This study addressed the physiological responses of five Nothofagus obliquastands across the Mediterranean‐Temperate gradient (35.9°−40.3°S) using carbon isotope discrimination (Δ13C) and intrinsic water use efficiency (iWUE) in tree rings during 1967–2017. Moreover, tree ring δ18O was evaluated in the northernmost site to better understand the effects of the megadrought in this drier location. These forests have become more efficient in their use of water. However, trees from the densest stand are discriminating more against 13C, probably due to reduced photosynthetic rates associated with increasing light competition. The strongest associations between climate and Δ13C were found in the northernmost stand, suggesting that warmer and drier conditions could have reduced 13C discrimination. Tree growth in this site has not decreased, and δ18O was negatively related to annual rainfall. However, a shift in this relationship was found since 2007, when both precipitation and δ18O decreased, while correlations between δ18O and growth increased. This implies that tree growth and δ18O are coupled in recent years, but precipitation is not the cause, suggesting that trees probably changed their water source to deeper and more depleted pools. Our research demonstrates that forests are not reducing their growth in central Chile, mainly due to a shift toward the use of deeper water sources. Despite a common climate trend across the gradient, there is a non‐uniform response of N. obliquaforests to climate drying, being their response site‐specific. The forests of south‐central Chile are facing a drying climate and a megadrought that started in 2010. This study addressed the physiological responses of five Nothofagus obliquastands across the Mediterranean‐Temperate gradient (35.9°−40.3°S) to climate drying using stable isotopes in tree rings during the period 1967–2017. These forests have become more efficient in their use of water. However, trees from the densest stand are showing a poor adaptability to climate change, probably due to a decrease in photosynthetic rates associated with the increase in competition. Our research demonstrates for the first time that forests are not reducing their growth in central Chile, mainly due to a shift toward the use of deeper water sources. However, it is not certain until which point this acclimation will persist as these pools get depleted in the future with continued drying. Despite a common climate trend across the latitudinal gradient, this research points to a non‐uniform response of N. obliquasecond‐growth forests to a drying climate, being their response stand and site‐specific. Despite a common climate trend, the response of N. obliquato climate change is not uniform, but rather specific to the stand and siteTree growth and δ18O have been coupled during the megadrought in the northernmost site, but rainfall does not influence this patternN. obliquanorthern forests are able to maintain radial growth rates and acclimate to persistent droughts by tapping deeper water sources Despite a common climate trend, the response of N. obliquato climate change is not uniform, but rather specific to the stand and site Tree growth and δ18O have been coupled during the megadrought in the northernmost site, but rainfall does not influence this pattern N. obliquanorthern forests are able to maintain radial growth rates and acclimate to persistent droughts by tapping deeper water sources

Published
2023
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17. Ecophysiological responses of Nothofagus obliqua forests to recent climate drying across the Mediterranean-Temperate biome transition in south-central Chile.

Author

Urrutia-Jalabert R, Barichivich J, Szejner P, Rozas V, and Lara A

Abstract

The forests of south-central Chile are facing a drying climate and a megadrought that started in 2010. This study addressed the physiological responses of five Nothofagus obliqua stands across the Mediterranean-Temperate gradient (35.9 ° -40.3° S) using carbon isotope discrimination (Δ 13 C) and intrinsic water use efficiency (iWUE) in tree rings during 1967-2017. Moreover, δ 18 O was evaluated in the northernmost site to better understand the effects of the megadrought in this drier location. These forests have become more efficient in their use of water. However, trees from the densest stand are discriminating more against 13 C, probably due to reduced photosynthetic rates associated with increasing competition. The strongest associations between climate and Δ 13 C were found in the northernmost stand, suggesting that warmer and drier conditions could have reduced 13 C discrimination. Tree growth in this site has not decreased, and δ 18 O was negatively related to annual rainfall. However, a shift in this relationship was found since 2007, when both precipitation and δ 18 O decreased, while correlations between δ 18 O and growth increased. This implies that tree growth and δ 18 O are coupled in recent years, but precipitation is not the cause, suggesting that trees probably changed their water source to deeper and more depleted pools. Our research demonstrates that forests are not reducing their growth in central Chile, mainly due to a shift towards the use of deeper water sources. Despite a common climate trend across the gradient, there is a non-uniform response of N. obliqua forests to climate drying, being their response site specific. Keywords: Tree rings, stable isotopes, tree physiology, climate gradient, megadrought, climate change.

Published
2022
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