Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species?
Non-native brook trout (Salvelinus fontinalis MITCHILL, 1815) was introduced into Norway in 1883. However, it was not until the late 1970s that this acid-tolerant salmonid species was stocked into many acidified lakes that many populations became established. In 2004, all brook trout stocking in Nor...
Published in: | Fauna norvegica |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
NTNU Open Access Journals
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2579421 https://doi.org/10.5324/fn.v38i0.2255 |
id |
ftnorskinstvf:oai:niva.brage.unit.no:11250/2579421 |
---|---|
record_format |
openpolar |
spelling |
ftnorskinstvf:oai:niva.brage.unit.no:11250/2579421 2024-09-15T17:56:27+00:00 Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? Hesthagen, Trygve H. Bolstad, Geir Hysing Kleiven, Einar 2018 application/pdf http://hdl.handle.net/11250/2579421 https://doi.org/10.5324/fn.v38i0.2255 eng eng NTNU Open Access Journals Andre: Direktoratet for naturforvaltning Fauna Norvegica. 2018, 38, 1-8. urn:issn:1502-4873 http://hdl.handle.net/11250/2579421 https://doi.org/10.5324/fn.v38i0.2255 cristin:1547414 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 1-8 38 Fauna Norvegica VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Journal article Peer reviewed 2018 ftnorskinstvf https://doi.org/10.5324/fn.v38i0.2255 2024-07-09T03:14:36Z Non-native brook trout (Salvelinus fontinalis MITCHILL, 1815) was introduced into Norway in 1883. However, it was not until the late 1970s that this acid-tolerant salmonid species was stocked into many acidified lakes that many populations became established. In 2004, all brook trout stocking in Norway ceased. In this study, we surveyed the distribution of brook trout in Norwegian water bodies. A totally of 202 self-sustaining populations were identified, mostly in unregulated lakes (n=101), streams (n=71) and also to some extent in reservoirs (n=25). Only four populations were found in inland rivers, and one population in a river with Atlantic salmon (Salmo salar L.). Localities with brook trout covered a wide range of altitudes and sizes. Analyses of time-series catches in sympatric populations of brown trout (Salmo trutta L.) and brook trout from 12 lakes (1997-2012) revealed a strong decline in brook trout stocks. A similar development in abundance has also emerged from other studies in recent years. Generally, lake-dwelling brook trout is regarded as a low-risk species with respect to invasiveness. However, brook trout/brown trout interactions may be habitat-specific, as brook trout may dominate in small and relatively cold streams. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Norwegian Institute for Water research: NIVA Open Access Archive (Brage) Fauna norvegica 38 1 8 |
institution |
Open Polar |
collection |
Norwegian Institute for Water research: NIVA Open Access Archive (Brage) |
op_collection_id |
ftnorskinstvf |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Hesthagen, Trygve H. Bolstad, Geir Hysing Kleiven, Einar Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
Non-native brook trout (Salvelinus fontinalis MITCHILL, 1815) was introduced into Norway in 1883. However, it was not until the late 1970s that this acid-tolerant salmonid species was stocked into many acidified lakes that many populations became established. In 2004, all brook trout stocking in Norway ceased. In this study, we surveyed the distribution of brook trout in Norwegian water bodies. A totally of 202 self-sustaining populations were identified, mostly in unregulated lakes (n=101), streams (n=71) and also to some extent in reservoirs (n=25). Only four populations were found in inland rivers, and one population in a river with Atlantic salmon (Salmo salar L.). Localities with brook trout covered a wide range of altitudes and sizes. Analyses of time-series catches in sympatric populations of brown trout (Salmo trutta L.) and brook trout from 12 lakes (1997-2012) revealed a strong decline in brook trout stocks. A similar development in abundance has also emerged from other studies in recent years. Generally, lake-dwelling brook trout is regarded as a low-risk species with respect to invasiveness. However, brook trout/brown trout interactions may be habitat-specific, as brook trout may dominate in small and relatively cold streams. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hesthagen, Trygve H. Bolstad, Geir Hysing Kleiven, Einar |
author_facet |
Hesthagen, Trygve H. Bolstad, Geir Hysing Kleiven, Einar |
author_sort |
Hesthagen, Trygve H. |
title |
Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? |
title_short |
Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? |
title_full |
Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? |
title_fullStr |
Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? |
title_full_unstemmed |
Distribution of non-native brook trout (Salvelinus fontinalis ) across Norwegian waterbodies – is it an invasive species? |
title_sort |
distribution of non-native brook trout (salvelinus fontinalis ) across norwegian waterbodies – is it an invasive species? |
publisher |
NTNU Open Access Journals |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2579421 https://doi.org/10.5324/fn.v38i0.2255 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
1-8 38 Fauna Norvegica |
op_relation |
Andre: Direktoratet for naturforvaltning Fauna Norvegica. 2018, 38, 1-8. urn:issn:1502-4873 http://hdl.handle.net/11250/2579421 https://doi.org/10.5324/fn.v38i0.2255 cristin:1547414 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_doi |
https://doi.org/10.5324/fn.v38i0.2255 |
container_title |
Fauna norvegica |
container_volume |
38 |
container_start_page |
1 |
op_container_end_page |
8 |
_version_ |
1810432650426449920 |