The Influence of Taxonomy and Environment on Leaf Trait Variation Along Tropical Abiotic Gradients

Frontiers in Forests and Global Change

Gregory Asner¹  Yadvinder Malhi²  Nikolaos M. Fyllas³  Sandra Díaz⁴  Roberta Martin⁴  Lisa Bentley⁵  Mickey Boakye⁶  Imma Oliveras⁷  Agne Gvozdevaite⁷  Alexander Frederick Shenkin⁷  Theresa Peprah⁸  Stephen Adu-Bredu⁸  Brian J. Enquist⁹  Norma Salinas^1,10  Ben Hur Marimon Junior^1,11  Karine Silva Peixoto^1,11  Beatriz Schwantes Marimon^1,11  Paulo Morandi^1,11 

[1] Conservation Science, Arizona State University, Tempe, AZ, United States;0Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, United States;Biodiversity Conservation Laboratory, Department of Environment, University of the Aegean, Mytilene, Greece;;Centre for Global Discovery &Department of Biology, Sonoma State University, Rohnert Park, CA, United States;Department of Environmental Science, Policy and Management, University of California, Berkeley, Berkeley, CA, United States;Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, United Kingdom;Forestry Research Institute of Ghana, Council for Scientific and Industrial Research, Kumasi, Ghana;Instituto Multidisciplinario de Biologia Vegetal, Consejo Nacional de Investigaciones Científicas y Técnicas and Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Cordoba, Córdoba, Argentina;Instituto de Ciencias de la Naturaleza, Territorio y Energías Renovables, Pontificia Universidad del Perú, Lima, Perú;Laboratorio de Ecologia Vegetal (LABEV), Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil;

关键词: environmental filtering;    variance partitioning;    trait covariation;    interspecific;    intraspecific;   

DOI  :  10.3389/ffgc.2020.00018

来源: DOAJ

【 摘 要 】

Deconstructing functional trait variation and co-variation across a wide range of environmental conditions is necessary to increase the mechanistic understanding of community assembly processes and improve current parameterization of dynamic vegetation models. Here, we present a study that deconstructs leaf trait variation and co-variation into within-species, taxonomic-, and plot-environment components along three tropical environmental gradients in Peru, Brazil, and Ghana. To do so, we measured photosynthetic, chemical, and structural leaf traits using a standardized sampling protocol for more than 1,000 individuals belonging to 367 species. Variation associated with the taxonomic component (species + genus + family) for most traits was relatively consistent across environmental gradients, but within-species variation and plot-environment variation was strongly dependent on the environmental gradient. Trait-trait co-variation was strongly linked to the environmental gradient where traits were measured, although some traits had consistent co-variation components irrespective of gradient. Our results demonstrate that filtering along these tropical gradients is mostly expressed through trait taxonomic variation, but that trait co-variation is strongly dependent on the local environment, and thus global trait co-variation relationships might not always apply at smaller scales and may quickly change under future climate scenarios.

【 授权许可】

Unknown