English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Habitat differentiation vs. isolation-by-distance: the genetic population structure of Elymus athericus in European salt marshes

Bockelmann, A.-C., Reusch, T. B. H., Bijlsma, R., & Bakker, J. P. (2003). Habitat differentiation vs. isolation-by-distance: the genetic population structure of Elymus athericus in European salt marshes. Molecular Ecology, 12(2), 505-515.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DC18-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DC19-4
Genre: Journal Article

Files

show Files
hide Files
:
bockelmann_2003.pdf (Publisher version), 249KB
 
File Permalink:
-
Name:
bockelmann_2003.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Evolutionary Biology, Plön; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Bockelmann, A.-C.1, Author              
Reusch, T. B. H.1, 2, Author              
Bijlsma, R., Author
Bakker, J. P., Author
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              
2Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

Content

show
hide
Free keywords: cross-species microsatellites; dispersal; Elymus athericus; habitat; isolation-by-distance; selection
 Abstract: We investigated genetic differentiation among populations of the clonal grass Elymus athericus, a common salt-marsh species occurring along the Wadden Sea coast of Europe. While E. athericus traditionally occurs in the high salt marsh, it recently also invaded lower parts of the marsh. In one of the first analyses of the genetic population structure in salt- marsh species, we were interested in population differentiation through isolation-by-distance, and among strongly divergent habitats (low and high marsh) in this wind- and water-dispersed species. High and low marsh habitats were sampled at six sites throughout the Wadden Sea. Based on reciprocal transplantation experiments conducted earlier revealing lower survival of foreign genotypes we predicted reduced gene flow among habitats. Accordingly, an analysis with polymorphic cross- species microsatellite primers revealed significant genetic differentiation between high and low marsh habitats already on a very small scale (<100 m), while isolation-by-distance was present only on larger scales (60-443 km). In an analysis of molecular variance we found that 14% of the genetic variance could be explained by the differentiation between habitats, as compared to only 8.9% to geographical (isolation-by-distance) effects among six sites 2.5-443 km distant from each other. This suggests that markedly different selection regimes between these habitats, in particular intraspecific competition and herbivory, result in habitat adaptation and restricted gene flow over distances as small as 80 m. Hence, the genetic population structure of plant species can only be understood when considering geographical and selection-mediated restrictions to gene flow simultaneously.

Details

show
hide
Language(s): eng - English
 Dates: 2003-02
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 39093
ISI: 000180421000018
Other: 2167/S 37891
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Molecular Ecology
  Alternative Title : Mol. Ecol.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 12 (2) Sequence Number: - Start / End Page: 505 - 515 Identifier: ISSN: 0962-1083