|
Descripción
|
|
|---|---|
| One of the prevalent issues in ecology is elucidating which are the ecological and evolutionary processes that generate and maintain the patterns of species diversity in rich communities. The recent development of methods to quantify the phylogenetic relatedness of co-occurring species has allowed new insights into the forces that structure and assembly rich communities (e.g. abiotic filtering vs. competitive exclusion vs. limited dispersal, etc). Although an individualistic concept of communities pervades current community ecological theory, the phylogenetic structure of ecological communities has not been analyzed from the point of view of individual species. Here, we describe several spatial statistics to measure local scale-dependent phylogenetic structures. The individual phylogenetic species variability (IPSV) measures the expected phylogenetic relatedness in circular neighborhoods of variable radius around the individuals of a focal species. In the same neighborhoods we measure the expected individual phylogenetic species richness (IPSR). We use IPSV and IPSR to investigate whether and at which spatial scales individual species affect or respond to local phylogenetic diversity. Our analysis of three forest dynamic plots (Barro Colorado, Cocoli and Sherman) reveals differences on the amount of species associated to higher or lower local phylogenetic diversity both among the forest and among habitats within the forests (e.g. ?accumulators? of phylogenetic diversity predominate in Barro Colorado, ?repellers? in Sherman and ?neutral? species in Cocoli). On the contrary, when evaluating the effect of big trees on the local community of small ones most species behaved neutrally in the tree forests. This confirms that both IPSV and IPSR can be effective tools to detect hidden spatial patterns in diversity and can contribute to a better understanding of community assembly. | |
|
Internacional
|
Si |
|
Nombre congreso
|
12 th European Ecological Federation Congress |
|
Tipo de participación
|
960 |
|
Lugar del congreso
|
Avila |
|
Revisores
|
Si |
|
ISBN o ISSN
|
NA |
|
DOI
|
|
|
Fecha inicio congreso
|
25/09/2011 |
|
Fecha fin congreso
|
29/09/2011 |
|
Desde la página
|
151 |
|
Hasta la página
|
151 |
|
Título de las actas
|
12 th European Ecological Federation Congress. Abstract Book |