Adaptive branching in source-sink habitats Export

@article{citeulike:5699811, abstract = {Abstract\ \ Evolution and ecological diversification in a heterogeneous environment is driven by an often complex interplay between local adaptation and dispersal between different habitat types. Heterogeneous environments also easily generate source-sink dynamics of populations coupled by dispersal. It follows that local adaptation and possible adaptive radiation almost by necessity involves adaptation to a (pseudo-)sink habitat, which is considered unlikely. We here study a model of 'parapatric branching' with this special focus on the spatial ecology of the process. We find that evolutionary branching can display a sequence of alternating adaptations to the source or the sink. In some circumstances a true sink can become a pseudo-sink through adaptation to the corresponding source habitat. The evolutionary endpoint is a spatially structured community consisting of two source populations with one corresponding sink or pseudo-sink each. Our results shed new light on the interpretation of extant source-sink systems and the process of parapatric branching.}, author = {Nilsson, Jennie and Ripa, J\"{o}rgen}, citeulike-article-id = {5699811}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s10682-009-9320-6}, citeulike-linkout-1 = {http://www.springerlink.com/content/121273167m4252kw}, doi = {10.1007/s10682-009-9320-6}, journal = {Evolutionary Ecology}, keywords = {adaptation, connectivity, sink, source, spatial}, posted-at = {2009-09-01 19:54:01}, priority = {2}, title = {Adaptive branching in source-sink habitats}, url = {http://dx.doi.org/10.1007/s10682-009-9320-6} }

TY - JOUR ID - citeulike:5699811 L3 - citeulike-article-id:5699811 N2 - Abstract  Evolution and ecological diversification in a heterogeneous environment is driven by an often complex interplay between local adaptation and dispersal between different habitat types. Heterogeneous environments also easily generate source-sink dynamics of populations coupled by dispersal. It follows that local adaptation and possible adaptive radiation almost by necessity involves adaptation to a (pseudo-)sink habitat, which is considered unlikely. We here study a model of ‘parapatric branching’ with this special focus on the spatial ecology of the process. We find that evolutionary branching can display a sequence of alternating adaptations to the source or the sink. In some circumstances a true sink can become a pseudo-sink through adaptation to the corresponding source habitat. The evolutionary endpoint is a spatially structured community consisting of two source populations with one corresponding sink or pseudo-sink each. Our results shed new light on the interpretation of extant source-sink systems and the process of parapatric branching. JF - Evolutionary Ecology TI - Adaptive branching in source-sink habitats KW - adaptation KW - connectivity KW - sink KW - source KW - spatial AU - Nilsson, Jennie AU - Ripa, Jörgen UR - http://dx.doi.org/10.1007/s10682-009-9320-6 ER -