Título : A functional perspective for breeding and wintering waterbird
communities: temporal trends in species and trait diversity |
Autor : de Arruda Almeida, Bia Sebastián-González, Esther dos Anjos, Luiz Green, Andrew John Botella Robles, Francisco |
Editor : Wiley |
Departamento: Departamentos de la UMH::Biología Aplicada |
Fecha de publicación: 2019-02 |
URI : https://hdl.handle.net/11000/31061 |
Resumen :
Waterbird communities are prone to strong temporal changes both seasonally and
annually, but little is known about how this affects their functional diversity and community
assembly. Detecting temporal trends in taxonomic and functional diversity
within (alpha diversity) and between (beta diversity) communities in breeding and
wintering seasons could give insight into the ecological processes driving those trends.
In this study, we investigated trends in wintering and breeding waterbirds within and
between eleven wetlands in Mediterranean Spain, using a 28-year time-series up to
2017. We assessed the temporal trends in taxonomic and functional diversity measures,
and compared observed functional diversity values with null expectations, in
order to explore the mechanisms driving community assembly. We found increases
over time in species richness and in the occupied functional space for both wintering
and breeding communities, indicating that species with distinct functional roles were
added in both seasons. However, the distribution of the abundances in the functional
space was different for breeding and wintering communities. Dissimilarity of species
and functional traits decreased among wetlands, suggesting that some of the same
functional traits were added to the different wetlands, increasing regional homogenization
through time. This is reflected in increases over time in mean body mass, diet
plasticity and in the importance of fish in waterbird diets, plus declines in the dietary
importance of invertebrates and in plasticity of feeding strata. Furthermore, species
composition between wintering and breeding communities, but not trait composition,
has become more similar through time. Our results highlight that annual changes, and
especially seasonal changes, in the composition of waterbird communities have different
effects on their functional diversity, and are influenced by opposing community
assembly mechanisms.
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Palabras clave/Materias: beta diversity functional structure functional traits Mediterranean wetlands |
Área de conocimiento : CDU: Ciencias puras y naturales: Biología: Biología general y teórica |
Tipo documento : application/pdf |
Derechos de acceso: info:eu-repo/semantics/closedAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional |
DOI : https://doi.org/10.1111/oik.05903 |
Aparece en las colecciones: Artículos Biología Aplicada
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