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Adaptive branching in source-sink habitats

Holmér, Jennie LU and Ripa, Jörgen LU orcid (2010) In Evolutionary Ecology 24(2). p.479-489
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... (More)
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. (Less)
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Parapatric branching, Source-sink dynamics, Local adaptation, Dispersal, Migration
in
Evolutionary Ecology
volume
24
issue
2
pages
479 - 489
publisher
Springer
external identifiers
  • wos:000274109600015
  • scopus:77952746049
ISSN
1573-8477
DOI
10.1007/s10682-009-9320-6
language
English
LU publication?
yes
id
8c6b01b6-d88b-4d2a-b566-f85fbddc6475 (old id 1570804)
date added to LUP
2016-04-01 12:58:30
date last changed
2022-01-27 08:34:57
@article{8c6b01b6-d88b-4d2a-b566-f85fbddc6475,
  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       = {{Holmér, Jennie and Ripa, Jörgen}},
  issn         = {{1573-8477}},
  keywords     = {{Parapatric branching; Source-sink dynamics; Local adaptation; Dispersal; Migration}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{479--489}},
  publisher    = {{Springer}},
  series       = {{Evolutionary Ecology}},
  title        = {{Adaptive branching in source-sink habitats}},
  url          = {{http://dx.doi.org/10.1007/s10682-009-9320-6}},
  doi          = {{10.1007/s10682-009-9320-6}},
  volume       = {{24}},
  year         = {{2010}},
}