Estructura filogenética de las comunidades de roedores del Plio-Pleistoceno ibérico
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2021
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2021
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Abstract
El estudio de la estructura filogenética de las comunidades introduce un nuevo enfoque a la ecología de comunidades basado exclusivamente en datos filogenéticos. Este tipo de análisis permite evaluar el grado de parentesco entre las especies de una comunidad e inferir relaciones entre estos patrones y diferentes parámetros ambientales. Dentro de la paleoecología, permite establecer dichas relaciones con eventos pasados con el fin de predecir los efectos que puedan tener futuros cambios ambientales sobre la estructura filogenética de las comunidades actuales. En el presente trabajo se ha estudiado el efecto que los diferentes cambios ambientales acontecidos en la península ibérica durante el Plio-Pleistoceno han tenido sobre la estructura filogenética de las comunidades de roedores. Los resultados dejan claro un patrón que refleja una tendencia al agrupamiento (especies relacionadas cerradas) durante eventos de cambio climático y dispersión de fauna, y una tendencia a la sobredispersas (las especies se ubican lejos en la filogenia) en intervalos de estabilidad general. Estos resultados plantean la posibilidad de analizar los patrones obtenidos a pesar de su baja significancia, siempre que estos provengan de conjuntos de especies regionales o subprovincias geográficas homogéneas, aportando una nueva perspectiva al estudio de estructura filogenética de comunidades en paleoecología.
The study of the phylogenetic structure of communities introduces a new approach to community ecology based exclusively on phylogenetic data. This type of analysis makes it possible to assess whether species within communities are more or less related with each other and infer relationships between these patterns and different environmental parameters. Within paleoecology, this index allows establishing such relationships with past events in order to predict the effects that future environmental changes may have on the phylogenetic structure of current communities. The present study has studied the effect that all different environmental changes which occurred in the iberian peninsula during the Plio-Pleistocene have had on the phylogenetic structure of rodent communities. The result makes clear a pattern that reflects a tendency towards clustering (closed related species) during events of climate change and fauna dispersal, and a tendency towards over-dispersion (species are located far away in the phylogeny) in intervals of general stability. This pattern can be clearly observed despite the low significance in the results obtained. These results raise the possibility of analyzing the patterns obtained from the results despite their low significance, provided that they come from polls of regional species or homogeneous geographical subprovinces, providing a new perspective to the study of the phylogenetic structure of communities in paleoecology.
The study of the phylogenetic structure of communities introduces a new approach to community ecology based exclusively on phylogenetic data. This type of analysis makes it possible to assess whether species within communities are more or less related with each other and infer relationships between these patterns and different environmental parameters. Within paleoecology, this index allows establishing such relationships with past events in order to predict the effects that future environmental changes may have on the phylogenetic structure of current communities. The present study has studied the effect that all different environmental changes which occurred in the iberian peninsula during the Plio-Pleistocene have had on the phylogenetic structure of rodent communities. The result makes clear a pattern that reflects a tendency towards clustering (closed related species) during events of climate change and fauna dispersal, and a tendency towards over-dispersion (species are located far away in the phylogeny) in intervals of general stability. This pattern can be clearly observed despite the low significance in the results obtained. These results raise the possibility of analyzing the patterns obtained from the results despite their low significance, provided that they come from polls of regional species or homogeneous geographical subprovinces, providing a new perspective to the study of the phylogenetic structure of communities in paleoecology.