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Global effects of soil and climate on leaf photosynthetic traits and rates

Maire, Vincent ; Wright, Ian J. ; Prentice, I. Colin ; Batjes, Niels H. ; Bhaskar, Radika ; van Bodegom, Peter M. ; Cornwell, Will K. ; Ellsworth, David ; Niinemets, Ülo ; Ordonez, Alejandro ; Reich, Peter B. ; Santiago, Louis S.

Global ecology and biogeography, 2015-06, Vol.24 (6), p.706-717 [Periódico revisado por pares]

Oxford: Blackwell Publishing Ltd

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  • Título:
    Global effects of soil and climate on leaf photosynthetic traits and rates
  • Autor: Maire, Vincent ; Wright, Ian J. ; Prentice, I. Colin ; Batjes, Niels H. ; Bhaskar, Radika ; van Bodegom, Peter M. ; Cornwell, Will K. ; Ellsworth, David ; Niinemets, Ülo ; Ordonez, Alejandro ; Reich, Peter B. ; Santiago, Louis S.
  • Assuntos: Datasets ; Herbivores ; ISRIC - World Soil Information ; Least-cost theory of photosynthesis ; nitrogen ; phosphorus ; photosynthesis ; plant functional traits ; soil fertility ; soil pH ; stomatal conductance
  • É parte de: Global ecology and biogeography, 2015-06, Vol.24 (6), p.706-717
  • Notas: istex:CD96C1EBA2B47EA404C0445E91180024507D58F9
    Appendix S1 Literature used to extend the GLOPNET database. Appendix S2 Dataset. Appendix S3 Details on soil and climate variables and their biogeographic representation. Appendix S4 Details on soil available phosphorus data. Appendix S5 Discussion on the quality of soil and climate data. Appendix S6 Details on data analysis Appendix S7 Details on soil-soil, climate-climate and soil-climate analyses. Appendix S8 Details on plant traits - environment analyses.
    ark:/67375/WNG-K132033L-C
    ARC - No. DP120103600; No. FT100100910
    Macquarie University
    ArticleID:GEB12296
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Aim: The influence of soil properties on photosynthetic traits in higher plants is poorly quantified in comparison with that of climate. We address this situation by quantifying the unique and joint contributions to global leaf-trait variation from soils and climate. Location: Terrestrial ecosystems world-wide. Methods: Using a trait dataset comprising 1509 species from 288 sites, with climate and soil data derived from global datasets, we quantified the effects of 20 soil and 26 climate variables on light-saturated photosynthetic rate (Aarea) stomatal conductance (gs), leaf nitrogen and phosphorus (Narea and Parea) and specific leaf area (SLA) using mixed regression models and multivariate analyses. Results: Soil variables were stronger predictors of leaf traits than climatic variables, except for SLA. On average, Narea, Parea and Aarea increased and SLA decreased with increasing soil pH and with increasing site aridity. gs declined and Parea increased with soil available P (Pavail). Narea was unrelated to total soil N. Joint effects of soil and climate dominated over their unique effects on Narea and Parea, while unique effects of soils dominated for Aarea and gs. Path analysis indicated that variation in reflected the combined independent influences of Narea and gs, the former promoted by high pH and aridity and the latter by low Pavail. Main conclusions: Three environmental variables were key for explaining variation in leaf traits: soil pH and Pavail, and the climatic moisture index (the ratio of precipitation to potential evapotranspiration). Although the reliability of global soil datasets lags behind that of climate datasets, our results nonetheless provide compelling evidence that both can be jointly used in broad-scale analyses, and that effects uniquely attributable to soil properties are important determinants of leaf photosynthetic traits and rates. A significant future challenge is to better disentangle the covarying physiological, ecological and evolutionary mechanisms that underpin trait-environment relationships.
  • Editor: Oxford: Blackwell Publishing Ltd
  • Idioma: Inglês
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