umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Life history and large-scale habitat use of brown trout (salmo trutta) and brook trout (salvelinus fontinalis) - implications for species replacement patterns
Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
2008 (English)In: Canadian Journal of Fisheries and Aquatic Sciences, Vol. 65, 633-644 p.Article in journal (Refereed) Published
Abstract [en]

Simple models of temperature-mediated interference competition have generally failed to explain salmonid species replacement patterns along altitudinal gradients, a fact that emphasizes the need to link individual features and their relation to habitat characteristics to population-level dynamics. We compared life history parameters in stream resident populations of brook trout (/Salvelinus fontinalis/) and brown trout (/Salmo trutta/) in eight boreal streams. By use of electro-fishing data from 1000 sites, we analyzed and related differences in life history traits to habitat- and interaction-related patterns of growth and densities of brook and brown trout, respectively. Brown trout were competitively dominant throughout the size span of sampled sympatric sites and lowered growth rates in sympatry were mainly caused by environmental factors, revealing a link between brook trout invasions and habitat-related limitations on brown trout performance. Still, the frequency of allopatric brook trout sites increased in the smallest watersheds, indicating that localities with a high degree of brook trout dominance rarely sustain brown trout over time. Brook trout populations had higher turn-over rates and proportions of mature females than brown trout populations. Our results suggest growth potential and its effect on population fecundity as a critical factor limiting competitive ability and distribution of brown trout in Swedish brook trout dominated headwaters.

Place, publisher, year, edition, pages
2008. Vol. 65, 633-644 p.
Identifiers
URN: urn:nbn:se:umu:diva-11472OAI: oai:DiVA.org:umu-11472DiVA: diva2:151143
Available from: 2009-01-09 Created: 2009-01-09 Last updated: 2011-01-10Bibliographically approved

Open Access in DiVA

No full text

Other links

http://rparticle.web-p.cisti.nrc.ca/rparticle/AbstractTemplateServlet?calyLang=eng&journal=cjfas&volume=65&year=0&issue=4&msno=f08-003

Search in DiVA

By author/editor
Öhlund, Gunnar
By organisation
Ecology and Environmental Science

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 150 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf