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      Links to rare climates do not translate into distinct traits for island endemics

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          Abstract

          Current models of island biogeography treat endemic and non‐endemic species as if they were functionally equivalent, focussing primarily on species richness. Thus, the functional composition of island biotas in relation to island biogeographical variables remains largely unknown. Using plant trait data (plant height, leaf area and flower length) for 895 native species in the Canary Islands, we related functional trait distinctiveness and climate rarity for endemic and non‐endemic species and island ages. Endemics showed a link to climatically rare conditions that is consistent with island geological change through time. However, functional trait distinctiveness did not differ between endemics and non‐endemics and remained constant with island age. Thus, there is no obvious link between trait distinctiveness and occupancy of rare climates, at least for the traits measured here, suggesting that treating endemic and non‐endemic species as functionally equivalent in island biogeography is not fundamentally wrong.

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          phytools: an R package for phylogenetic comparative biology (and other things)

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            Plant Ecological Strategies: Some Leading Dimensions of Variation Between Species

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              Functional traits and niche-based tree community assembly in an Amazonian forest.

              It is debated whether species-level differences in ecological strategy, which play a key role in much of coexistence theory, are important in structuring highly diverse communities. We examined the co-occurrence patterns of over 1100 tree species in a 25-hectare Amazonian forest plot in relation to field-measured functional traits. Using a null model approach, we show that co-occurring trees are often less ecologically similar than a niche-free (neutral) model predicts. Furthermore, we find evidence for processes that simultaneously drive convergence and divergence in key aspects of plant strategy, suggesting that at least two distinct niche-based processes are occurring. Our results show that strategy differentiation among species contributes to the maintenance of diversity in one of the most diverse tropical forests in the world.
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                Journal
                Ecology Letters
                Ecology Letters
                Wiley
                1461-023X
                1461-0248
                April 2023
                February 05 2023
                April 2023
                : 26
                : 4
                : 504-515
                Affiliations
                [1 ]School of Geography University of Nottingham Nottingham UK
                [2 ]Conservation Science Group, Department of Zoology University of Cambridge Cambridge UK
                [3 ]Biogeography & Biodiversity Lab, Institute of Physical Geography, Goethe University Frankfurt Frankfurt Germany
                [4 ]German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
                [5 ]Department of Computer Science Martin Luther University Halle‐Wittenberg Halle Germany
                [6 ]Sport Ecology, Bayreuth Center for Sport Science (BaySpo) & Bayreuth Center of Ecology and Environmental Research (BayCEER) Bayreuth Germany
                [7 ]Department of Biogeography, Bayreuth Center of Ecology and Environmental Research (BayCEER) University of Bayreuth Bayreuth Germany
                [8 ]Biodiversity, Macroecology & Biogeography University of Göttingen Göttingen Germany
                [9 ]Island Ecology and Biogeography Group, Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna Spain
                [10 ]Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LECA Grenoble France
                [11 ]Leipzig University Leipzig Germany
                [12 ]Department of Ecology and Evolutionary Biology University of California Los Angeles California USA
                [13 ]Department of Ecology and Evolutionary Biology Tucson Arizona USA
                [14 ]Université Alpes, CNRS, LIPHY Grenoble France
                [15 ]CEFE, University of Montpellier, CNRS, EPHE, IRD Montpellier France
                [16 ]Campus‐Institut Data Science Göttingen Germany
                [17 ]Centre of Biodiversity and Sustainable Land Use (CBL), University of Göttingen Göttingen Germany
                [18 ]Department of Biology Lakehead University Thunder Bay Ontario Canada
                Article
                10.1111/ele.14169
                d90fa094-aed1-44d2-9d7b-dbf51817f416
                © 2023

                http://creativecommons.org/licenses/by/4.0/

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