Sistemática y biogeografía de la sección Casparya (Begonia, Begoniaceae)

In this dissertation, I propose that integration of phylogenetic, biogeographical and climatic trends may help to understand ecological patterns of diversity. For example, the lack of correspondence between the phylogenetic and niche divergences in a mid-Andean centered group: the environmental nich...

Full description

Autores:
Jara Muñoz, Orlando Adolfo
Tipo de recurso:
Doctoral thesis
Fecha de publicación:
2017
Institución:
Universidad de los Andes
Repositorio:
Séneca: repositorio Uniandes
Idioma:
spa
OAI Identifier:
oai:repositorio.uniandes.edu.co:1992/7737
Acceso en línea:
http://hdl.handle.net/1992/7737
Palabra clave:
Begonias - Distribución geográfica - Investigaciones
Begonias - Clasificación - Investigaciones
Biología - Clasificación - Investigaciones
Filogenia (Botánica) - Investigaciones
Biología
Rights
openAccess
License
http://creativecommons.org/licenses/by-nc-sa/4.0/
Description
Summary:In this dissertation, I propose that integration of phylogenetic, biogeographical and climatic trends may help to understand ecological patterns of diversity. For example, the lack of correspondence between the phylogenetic and niche divergences in a mid-Andean centered group: the environmental niche is not more different for phylogenetically distant species than for close related ones. Based on the previous framework, I evaluate hypotheses on the dynamics of net rates of diversification, the link between spatial, climatic niche and phylogenetic relationships and the evolutionary change in morphological characters and their implications for taxonomy. I used as study system the genus Begonia, but the conclusions probably may apply to Other plant groups with a similar biology and distribution. Specifically, I used the principal (in term of richness and distribution) American clade of Begonia, and the sections Casparya, depending on the research question