Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy
Summary Migratory and resident forms of salmonids coexist in many river systems. Although such coexistence is widespread, little is known about its ecological basis and no studies have compared the habitat use of premigratory juveniles and residents. We employed a comparative approach to explore the...
Published in: | Journal of Animal Ecology |
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Online Access: | http://dx.doi.org/10.1111/j.1365-2656.2006.01090.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01090.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01090.x |
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crwiley:10.1111/j.1365-2656.2006.01090.x 2024-09-15T17:56:29+00:00 Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy MORINVILLE, GENEVIÈVE R. RASMUSSEN, JOSEPH B. 2006 http://dx.doi.org/10.1111/j.1365-2656.2006.01090.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01090.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01090.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 75, issue 3, page 693-704 ISSN 0021-8790 1365-2656 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-2656.2006.01090.x 2024-08-27T04:32:06Z Summary Migratory and resident forms of salmonids coexist in many river systems. Although such coexistence is widespread, little is known about its ecological basis and no studies have compared the habitat use of premigratory juveniles and residents. We employed a comparative approach to explore the differential habitat use of juvenile anadromous and resident brook trout. This required the investigation of habitat use in streams closed to anadromy, containing only resident brook trout Salvelinus fontinalis (‘resident‐only’ streams) and streams open to anadromy, containing coexisting Atlantic salmon Salmo salar and anadromous and resident brook trout (‘migrant‐resident’ streams). We demonstrate that fast habitats (riffles) are occupied more frequently in streams with migratory brook trout relative to riffle habitats of streams with only resident brook trout. In contrast, occupation of slow current velocities (pools) was observed in both migrant‐resident and resident‐only streams as both stream types contain resident brook trout. The net effect is a wider distribution of occupied habitats (pool and riffles) in migrant‐resident streams relative to resident‐only streams, resulting in few, if any, unused habitats. These results are consistent with previously reported bioenergetic, morphological and stable isotope differences observed between anadromous and resident brook trout. Our findings suggest that a link exists between juvenile habitat use, metabolic costs and life‐history strategies. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Animal Ecology 75 3 693 704 |
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English |
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Summary Migratory and resident forms of salmonids coexist in many river systems. Although such coexistence is widespread, little is known about its ecological basis and no studies have compared the habitat use of premigratory juveniles and residents. We employed a comparative approach to explore the differential habitat use of juvenile anadromous and resident brook trout. This required the investigation of habitat use in streams closed to anadromy, containing only resident brook trout Salvelinus fontinalis (‘resident‐only’ streams) and streams open to anadromy, containing coexisting Atlantic salmon Salmo salar and anadromous and resident brook trout (‘migrant‐resident’ streams). We demonstrate that fast habitats (riffles) are occupied more frequently in streams with migratory brook trout relative to riffle habitats of streams with only resident brook trout. In contrast, occupation of slow current velocities (pools) was observed in both migrant‐resident and resident‐only streams as both stream types contain resident brook trout. The net effect is a wider distribution of occupied habitats (pool and riffles) in migrant‐resident streams relative to resident‐only streams, resulting in few, if any, unused habitats. These results are consistent with previously reported bioenergetic, morphological and stable isotope differences observed between anadromous and resident brook trout. Our findings suggest that a link exists between juvenile habitat use, metabolic costs and life‐history strategies. |
format |
Article in Journal/Newspaper |
author |
MORINVILLE, GENEVIÈVE R. RASMUSSEN, JOSEPH B. |
spellingShingle |
MORINVILLE, GENEVIÈVE R. RASMUSSEN, JOSEPH B. Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy |
author_facet |
MORINVILLE, GENEVIÈVE R. RASMUSSEN, JOSEPH B. |
author_sort |
MORINVILLE, GENEVIÈVE R. |
title |
Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy |
title_short |
Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy |
title_full |
Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy |
title_fullStr |
Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy |
title_full_unstemmed |
Does life‐history variability in salmonids affect habitat use by juveniles? A comparison among streams open and closed to anadromy |
title_sort |
does life‐history variability in salmonids affect habitat use by juveniles? a comparison among streams open and closed to anadromy |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-2656.2006.01090.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01090.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01090.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Animal Ecology volume 75, issue 3, page 693-704 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2656.2006.01090.x |
container_title |
Journal of Animal Ecology |
container_volume |
75 |
container_issue |
3 |
container_start_page |
693 |
op_container_end_page |
704 |
_version_ |
1810432679138557952 |