Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned?
Salmonids have been introduced worldwide to regions where they were not indigenous, usually without considering the effects on native species. This has led to many combinations of species in unnatural sympatry, some of which are suspected to interact strongly, but we currently have inadequate knowle...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1988
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Online Access: | http://dx.doi.org/10.1139/f88-260 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-260 |
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crcansciencepubl:10.1139/f88-260 2024-06-23T07:51:23+00:00 Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? Fausch, Kurt D. 1988 http://dx.doi.org/10.1139/f88-260 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-260 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 45, issue 12, page 2238-2246 ISSN 0706-652X 1205-7533 journal-article 1988 crcansciencepubl https://doi.org/10.1139/f88-260 2024-05-24T13:05:53Z Salmonids have been introduced worldwide to regions where they were not indigenous, usually without considering the effects on native species. This has led to many combinations of species in unnatural sympatry, some of which are suspected to interact strongly, but we currently have inadequate knowledge to allow us to predict the outcome of most such introductions. For example, despite current controversy about the potential effects of Pacific salmonids now stocked in Atlantic waters, we have only empirical evidence with which to judge whether they will be detrimental to Atlantic salmon (Salmo salar). Moreover, most experimental tests of interspecific competition between other pairs of stream salmonids have not been rigorous. A review of literature about the suspected competition between brook trout (Salvelinus fontinalis) and rainbow trout (Salmo gairdneri) in streams reveals that despite empirical evidence that water temperature and velocity play a critical interacting role in determining the outcome, most experiments have failed to elucidate the important mechanisms involved. Carefully designed experiments that compare the strength of interspecific versus intraspecific competition for different size classes will allow us to improve predictions about the effects of introduced salmonids on native species in streams. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Pacific Canadian Journal of Fisheries and Aquatic Sciences 45 12 2238 2246 |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Salmonids have been introduced worldwide to regions where they were not indigenous, usually without considering the effects on native species. This has led to many combinations of species in unnatural sympatry, some of which are suspected to interact strongly, but we currently have inadequate knowledge to allow us to predict the outcome of most such introductions. For example, despite current controversy about the potential effects of Pacific salmonids now stocked in Atlantic waters, we have only empirical evidence with which to judge whether they will be detrimental to Atlantic salmon (Salmo salar). Moreover, most experimental tests of interspecific competition between other pairs of stream salmonids have not been rigorous. A review of literature about the suspected competition between brook trout (Salvelinus fontinalis) and rainbow trout (Salmo gairdneri) in streams reveals that despite empirical evidence that water temperature and velocity play a critical interacting role in determining the outcome, most experiments have failed to elucidate the important mechanisms involved. Carefully designed experiments that compare the strength of interspecific versus intraspecific competition for different size classes will allow us to improve predictions about the effects of introduced salmonids on native species in streams. |
format |
Article in Journal/Newspaper |
author |
Fausch, Kurt D. |
spellingShingle |
Fausch, Kurt D. Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? |
author_facet |
Fausch, Kurt D. |
author_sort |
Fausch, Kurt D. |
title |
Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? |
title_short |
Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? |
title_full |
Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? |
title_fullStr |
Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? |
title_full_unstemmed |
Tests of Competition between Native and Introduced Salmonids in Streams: What Have We Learned? |
title_sort |
tests of competition between native and introduced salmonids in streams: what have we learned? |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/f88-260 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-260 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 45, issue 12, page 2238-2246 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f88-260 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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45 |
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12 |
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2238 |
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2246 |
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1802642472777547776 |