Plant traits controlling growth change in response to a drier climate.

Autor: Rowland L; College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4RJ, UK., Oliveira RS; Instituto de Biologia, University of Campinas (UNICAMP), Campinas, SP, 13083-970, Brasil.; Biological Sciences, UWA, Perth, Crawle, WA, 6009, Australia., Bittencourt PRL; College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4RJ, UK.; Programa de Pós Graduação em Ecologia Institute of Biology, University of Campinas - UNICAMP 13083-970, PO Box 6109, Campinas, SP, Brazil., Giles AL; Programa de Pós Graduação em Ecologia Institute of Biology, University of Campinas - UNICAMP 13083-970, PO Box 6109, Campinas, SP, Brazil., Coughlin I; Departamento de Biologia, FFCLRP, Universidade de São Paulo, Ribeirão Preto, SP, 14040-900, Brasil.; Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia., Costa PB; Biological Sciences, UWA, Perth, Crawle, WA, 6009, Australia.; Programa de Pós Graduação em Biologia Vegetal Institute of Biology, University of Campinas - UNICAMP, PO Box 6109, Campinas, SP, 13083-970, Brazil., Domingues T; Departamento de Biologia, FFCLRP, Universidade de São Paulo, Ribeirão Preto, SP, 14040-900, Brasil., Ferreira LV; Museu Paraense Emílio Goeldi, Belém, PA, 66040-170, Brasil., Vasconcelos SS; EMBRAPA Amazônia Oriental, 14 Belém, PA, 66095-903, Brasil., Junior JAS; Instituto de Geosciências, Universidade Federal do Pará, Belém, PA, 66075-110, Brasil., Oliveira AAR; School of GeoSciences, University of Edinburgh, Edinburgh, EH9 3FF, UK., da Costa ACL; Museu Paraense Emílio Goeldi, Belém, PA, 66040-170, Brasil.; EMBRAPA Amazônia Oriental, 14 Belém, PA, 66095-903, Brasil., Meir P; Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia.; School of GeoSciences, University of Edinburgh, Edinburgh, EH9 3FF, UK., Mencuccini M; CREAF, Campus UAB, Cerdanyola del Vallés, 08193, Spain.; ICREA, Barcelona, 08010, Spain.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2021 Feb; Vol. 229 (3), pp. 1363-1374. Date of Electronic Publication: 2020 Nov 06.
DOI: 10.1111/nph.16972
Abstrakt: Plant traits are increasingly being used to improve prediction of plant function, including plant demography. However, the capability of plant traits to predict demographic rates remains uncertain, particularly in the context of trees experiencing a changing climate. Here we present data combining 17 plant traits associated with plant structure, metabolism and hydraulic status, with measurements of long-term mean, maximum and relative growth rates for 176 trees from the world's longest running tropical forest drought experiment. We demonstrate that plant traits can predict mean annual tree growth rates with moderate explanatory power. However, only combinations of traits associated more directly with plant functional processes, rather than more commonly employed traits like wood density or leaf mass per area, yield the power to predict growth. Critically, we observe a shift from growth being controlled by traits related to carbon cycling (assimilation and respiration) in well-watered trees, to traits relating to plant hydraulic stress in drought-stressed trees. We also demonstrate that even with a very comprehensive set of plant traits and growth data on large numbers of tropical trees, considerable uncertainty remains in directly interpreting the mechanisms through which traits influence performance in tropical forests.
(© 2020 The Authors New Phytologist ©2020 New Phytologist Trust.)
Databáze: MEDLINE
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