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  • Por favor, use este identificador para citar o enlazar este ítem: https://repositorio.uti.edu.ec//handle/123456789/3206
    Título : Functional Diversity in Ferns Is Driven by Species Richness Rather Than by Environmental Constraints
    Autor : Aros-Mualin, Daniela
    Noben, Sarah
    Karger, Dirik
    Carvajal-Hernández, César
    Salazar, Laura
    Hernández-Rojas, Adriana
    Kluge, Jurgen
    Sundue, Michael
    Lehnert, Marcus
    Quandt, Dietmar
    Kessler, Michael
    Fecha de publicación : 2021
    Editorial : Frontiers in Plant Science. Volume 11
    Resumen : Functional traits determine how species interact with their abiotic and biotic environment. In turn, functional diversity describes how assemblages of species as a whole are adapted to their environment, which also determines how they might react to changing conditions. To fully understand functional diversity, it is fundamental to (a) disentangle the influences of environmental filtering and species richness from each other, (b) assess if the trait space saturates at high levels of species richness, and (c) understand how changes in species numbers affect the relative importance of the trait niche expansion and packing. In the present study, we determined functional diversity of fern assemblages by describing morphological traits related to resource acquisition along four tropical elevational transects with different environmental conditions and species richness. We used several functional diversity indices and their standardized effect size to consider different aspects of functional diversity. We contrasted these aspects of functional diversity with climate data and species richness using linear models and linear mixed models. Our results show that functional morphological trait diversity was primarily driven by species richness and only marginally by environmental conditions. Moreover, increasing species richness contributed progressively to packing of the morphological niche space, while at the same time decreasing morphological expansion until a saturation point was reached. Overall, our findings suggest that the density of co-occurring species is the fundamental driving force of morphological niche structure, and environmental conditions have only an indirect influence on fern resource acquisition strategies.
    URI : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7829179/
    http://repositorio.uti.edu.ec//handle/123456789/3206
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