Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population
Source at https://www.jstor.org/publisher/fzb . Population biology changes in native dimorphic whitefish Coregonus lavaretus were studied over a decade in the subarctic Pasvik watercourse, where large biotric changes occurred due to an invasion by vendace C. albula . Although initially recorded in t...
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2004
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ftunivtroemsoe:oai:munin.uit.no:10037/14924 2023-05-15T17:54:41+02:00 Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population Bøhn, Thomas Amundsen, Per-Arne 2004-02-26 https://hdl.handle.net/10037/14924 eng eng Finnish Zoological and Botanical Publishing Board Annales Zoologici Fennici Bøhn, T. & Amundsen, P. (2004). Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population. Annales Zoologici Fennici, 41 , 125-136. FRIDAID 418786 0003-455X 1797-2450 https://hdl.handle.net/10037/14924 openAccess VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed 2004 ftunivtroemsoe 2021-06-25T17:56:26Z Source at https://www.jstor.org/publisher/fzb . Population biology changes in native dimorphic whitefish Coregonus lavaretus were studied over a decade in the subarctic Pasvik watercourse, where large biotric changes occurred due to an invasion by vendace C. albula . Although initially recorded in the upstream part of the watercourse, where it is now the dominant pelagic species, the vendace subsequently also colonised the downstream area. We hypothesized that the impact of the invader would affect the population biology (density, habitat choice, growth, size- and age-structure and size and age at maturation) of the native whitefish populations, especially upstream in the watercourse, late in the invasion phase, and in the pelagic whitefish morph. Strong effects from the invading vendace were observed on the native dimorphic whitefish populations. Effects on the densely-rakered white-fish, which are ecologically similar to vendace, ranged from numerical responses (strong density decline in the population), habitat use (shift from pelagic to littoral) and indivudual growth (significant growth reduction in zooplanktivorous life stages). For the benthic sparsely-rakered whitefish, effects were more restricted and recorded mainly on growth. Article in Journal/Newspaper Pasvik Subarctic University of Tromsø: Munin Open Research Archive Pasvik ENVELOPE(30.580,30.580,69.810,69.810) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Bøhn, Thomas Amundsen, Per-Arne Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Source at https://www.jstor.org/publisher/fzb . Population biology changes in native dimorphic whitefish Coregonus lavaretus were studied over a decade in the subarctic Pasvik watercourse, where large biotric changes occurred due to an invasion by vendace C. albula . Although initially recorded in the upstream part of the watercourse, where it is now the dominant pelagic species, the vendace subsequently also colonised the downstream area. We hypothesized that the impact of the invader would affect the population biology (density, habitat choice, growth, size- and age-structure and size and age at maturation) of the native whitefish populations, especially upstream in the watercourse, late in the invasion phase, and in the pelagic whitefish morph. Strong effects from the invading vendace were observed on the native dimorphic whitefish populations. Effects on the densely-rakered white-fish, which are ecologically similar to vendace, ranged from numerical responses (strong density decline in the population), habitat use (shift from pelagic to littoral) and indivudual growth (significant growth reduction in zooplanktivorous life stages). For the benthic sparsely-rakered whitefish, effects were more restricted and recorded mainly on growth. |
format |
Article in Journal/Newspaper |
author |
Bøhn, Thomas Amundsen, Per-Arne |
author_facet |
Bøhn, Thomas Amundsen, Per-Arne |
author_sort |
Bøhn, Thomas |
title |
Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population |
title_short |
Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population |
title_full |
Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population |
title_fullStr |
Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population |
title_full_unstemmed |
Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population |
title_sort |
invasion-mediated changes in the population biology of a dimorphic whitefish coregonus lavaretus population |
publisher |
Finnish Zoological and Botanical Publishing Board |
publishDate |
2004 |
url |
https://hdl.handle.net/10037/14924 |
long_lat |
ENVELOPE(30.580,30.580,69.810,69.810) |
geographic |
Pasvik |
geographic_facet |
Pasvik |
genre |
Pasvik Subarctic |
genre_facet |
Pasvik Subarctic |
op_relation |
Annales Zoologici Fennici Bøhn, T. & Amundsen, P. (2004). Invasion-mediated changes in the population biology of a dimorphic whitefish Coregonus lavaretus population. Annales Zoologici Fennici, 41 , 125-136. FRIDAID 418786 0003-455X 1797-2450 https://hdl.handle.net/10037/14924 |
op_rights |
openAccess |
_version_ |
1766162476370493440 |