Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Competitive exclusion along climate gradients: energy efficiency influences the distribution of two salmonid fishes
Norwegian Institute for Nature Research, Trondheim, Norge.
Norwegian Institute for Nature Research, Trondheim, Norge.
Norwegian Institute for Nature Research, Oslo, Norge. (Naturresurs Rinnande Vatten)
Norwegian Institute for Nature Research, Trondheim, Norge.
Visa övriga samt affilieringar
2011 (Engelska)Ingår i: Global Change Biology, ISSN 1354-1013, E-ISSN 1365-2486, Vol. 17, nr 4, s. 1703-1711Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We tested the importance of thermal adaptations and energy efficiency in relation to the geographical distribution of two competing freshwater salmonid fish species. Presence–absence data for Arctic char and brown trout were obtained from 1502 Norwegian lakes embracing both temperature and productivity gradients. The distributions were contrasted with laboratory-derived temperature scaling models for food consumption, growth and energy efficiency. Thermal performances of the two species were almost identical. However, Arctic char exhibited double the growth efficiency (per unit of food) and appear to have out-competed brown trout from cold, low-productivity lakes, perhaps by scramble competition. Brown trout, for which previous reports have shown to be aggressive and dominant, have likely excluded the more energy-efficient Arctic char from relatively warm, productive lakes, perhaps by contest competition. Competitive interaction changing in outcome with lake productivity, rather than thermal performance, is likely a major determinant of the range distribution of the two species. Our study highlights the need for more focus on choice of relevant ecophysiological traits in ecological climate impact studies and species distribution modelling.

Ort, förlag, år, upplaga, sidor
2011. Vol. 17, nr 4, s. 1703-1711
Nyckelord [en]
climate change, competition, growth efficiency, species distribution, thermal performance
Nationell ämneskategori
Biologiska vetenskaper
Identifikatorer
URN: urn:nbn:se:kau:diva-34208DOI: 10.1111/j.1365-2486.2010.02335.xISI: 000287853000017OAI: oai:DiVA.org:kau-34208DiVA, id: diva2:754131
Tillgänglig från: 2014-10-09 Skapad: 2014-10-09 Senast uppdaterad: 2017-12-05Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Personposter BETA

Jonsson, Bror

Sök vidare i DiVA

Av författaren/redaktören
Jonsson, Bror
I samma tidskrift
Global Change Biology
Biologiska vetenskaper

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 46 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf