Библиографическое описание:Revealing legacy effects of extreme droughts on tree growth of oaks across the Northern Hemisphere : научное издание / Arun K. Bose [et al.]. - Текст : непосредственный // Science of the Total Environment. - 2024. - Т. 926, № . - P. 172049. - ISSN 0048-9697. - ISSN 1879-1026, DOI 10.1016/j.scitotenv.2024.172049.
Аннотация:Forests are undergoing increasing risks of drought-induced tree mortality. Species replacement patterns following mortality may have a significant impact on the global carbon cycle. Among major hardwoods, deciduous oaks (Quercus spp.) are increasingly reported as replacing dying conifers across the Northern Hemisphere. Yet, our knowledge on the growth responses of these oaks to drought is incomplete, especially regarding post-drought legacy effects. The objectives of this study were to determine the occurrence, duration, and magnitude of legacy effects of extreme droughts and how that vary across species, sites, and drought characteristics. The legacy effects were quantified by the deviation of observed from expected radial growth indices in the period 1940–2016. We used stand-level chronologies from 458 sites and 21 oak species primarily from Europe, north-eastern America, and eastern Asia. We found that legacy effects of droughts could last from 1 to 5 years after the drought and were more prolonged in dry sites. Negative legacy effects (i.e., lower growth than expected) were more prevalent after repetitive droughts in dry sites. The effect of repetitive drought was stronger in Mediterranean oaks especially of Quercus faginea. Species-specific analyses revealed that Q. petraea and Q. macrocarpa from dry sites were more negatively affected by the droughts while growth of several oak species from mesic sites increased during post-drought years. Sites showing positive correlations to winter temperature showed little to no growth depression after drought, whereas sites with a positive correlation to previous summer water balance showed decreased growth. This may indicate that although winter warming favors tree growth during droughts, previous-year summer precipitation may predispose oak trees to current-year extreme droughts. Our results revealed a massive role of repetitive droughts in determining legacy effects and highlighted how growth sensitivity to climate, drought seasonality and species-specific traits drive the legacy effects in deciduous oak species.
Издательство:Elsevier Science Publishing Company, Inc.
Источник:Science of the Total Environment
Выпуск:Т. 926
Номера страниц:172049
Держатель оригинала документа:Departamento de Ciencia y Tecnología Agroforestal y Genética, Universidad de Castilla La Mancha, Albacete, Spain, Departamento de Sistemas y Recursos Naturales, E.T.S.I. Montes Forestal y del Medio Natural, Universidad Politécnica de Madrid (UPM), Madrid, Spain, Department of Biological Evolution, Ecology and Environmental Sciences, University of Barcelona, 08028 Barcelona, Spain, Department of Wood Science and Wood Technology, Mendel University in Brno, Brno, Czech Republic, ETH Zurich, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems (ITES), Universitätstrasse, 22, 8092 Zurich, Switzerland, Faculty of Forest and Environment, Eberswalde University for Sustainable Development, 16225 Eberswalde, Germany, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 21, Prague 6, Czech Republic, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic, Forestry and Wood Technology Discipline, Khulna University, Khulna, Bangladesh, Global Change Research Institute of the Czech Academy of Sciences, Brno, Czech Republic, Institut de recherche sur les forêts, Université du Québec en Abitibi-Témiscamingue, Québec, Canada, Institute of Botany, The Czech Academy of Sciences, Třeboň, Czech Republic, Instituto Pirenaico de Ecología (IPE-CSIC), Avda. Montañana 1005, Apdo. 202, Zaragoza E-50192, Spain, Scuola di Scienze Agrarie, Forestali, Alimentari, e Ambientali, Università della Basilicata, Potenza, Italy, Southern Swedish Research Center, Swedish University of Agricultural Sciences, Alnarp, Sweden, Technische Universität München, Institute for Advanced Study, Garching, Germany, Technische Universität München, TUM School of Life Sciences, Freising, Germany, Thünen Institute of Forest Ecosystems, Alfred-Moeller-Str. 1, Haus 41/42, 16225 Eberswalde, Germany, WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
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