Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma
Microhabitat use and partitioning among age 0+ and 1+ coho salmon, Oncorhynchus kisutch, and age 0+, 1+ and 2+ Dolly Varden, Salvelinus malma, was studied in small (<2 m wide), natural streams on Prince of Wales Island, Alaska, and in laboratory stream channels. Coho salmon occupied midwater posi...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
1990
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Online Access: | http://dx.doi.org/10.1139/f90-256 http://www.nrcresearchpress.com/doi/pdf/10.1139/f90-256 |
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crcansciencepubl:10.1139/f90-256 2024-04-07T07:55:34+00:00 Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma Dolloff, C. Andrew Reeves, Cordon H. 1990 http://dx.doi.org/10.1139/f90-256 http://www.nrcresearchpress.com/doi/pdf/10.1139/f90-256 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 47, issue 12, page 2297-2306 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1990 crcansciencepubl https://doi.org/10.1139/f90-256 2024-03-08T00:37:49Z Microhabitat use and partitioning among age 0+ and 1+ coho salmon, Oncorhynchus kisutch, and age 0+, 1+ and 2+ Dolly Varden, Salvelinus malma, was studied in small (<2 m wide), natural streams on Prince of Wales Island, Alaska, and in laboratory stream channels. Coho salmon occupied midwater positions that they defended from other fish. Dolly Varden were more closely associated with the stream bottom and were seldom territorial. For each species, the depth of water, depth of focal point, and distance to nearest fish increased with fish size, whereas the distance to nearest cover decreased as fish size increased. Most fish selected focal point velocities between 0.0–9.0 cm∙s −1 .Woody debris was the most frequently used cover type and most fish occurred over gravel substrates ranging from 2–100 mm particle diameter. Habitat use by each species in the laboratory was similar to the pattern observed in the field. Each species occupied similar habitats both when alone and when the other species was present. Although habitat use by juveniles of coho salmon and Dolly Varden overlapped among several key parameters, each species primarily exploited resources not readily available to or selected by the other in the natural streams we studied. Article in Journal/Newspaper Prince of Wales Island Alaska Canadian Science Publishing Prince of Wales Island ENVELOPE(-99.001,-99.001,72.668,72.668) Varden ENVELOPE(7.656,7.656,62.534,62.534) Canadian Journal of Fisheries and Aquatic Sciences 47 12 2297 2306 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Dolloff, C. Andrew Reeves, Cordon H. Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Microhabitat use and partitioning among age 0+ and 1+ coho salmon, Oncorhynchus kisutch, and age 0+, 1+ and 2+ Dolly Varden, Salvelinus malma, was studied in small (<2 m wide), natural streams on Prince of Wales Island, Alaska, and in laboratory stream channels. Coho salmon occupied midwater positions that they defended from other fish. Dolly Varden were more closely associated with the stream bottom and were seldom territorial. For each species, the depth of water, depth of focal point, and distance to nearest fish increased with fish size, whereas the distance to nearest cover decreased as fish size increased. Most fish selected focal point velocities between 0.0–9.0 cm∙s −1 .Woody debris was the most frequently used cover type and most fish occurred over gravel substrates ranging from 2–100 mm particle diameter. Habitat use by each species in the laboratory was similar to the pattern observed in the field. Each species occupied similar habitats both when alone and when the other species was present. Although habitat use by juveniles of coho salmon and Dolly Varden overlapped among several key parameters, each species primarily exploited resources not readily available to or selected by the other in the natural streams we studied. |
format |
Article in Journal/Newspaper |
author |
Dolloff, C. Andrew Reeves, Cordon H. |
author_facet |
Dolloff, C. Andrew Reeves, Cordon H. |
author_sort |
Dolloff, C. Andrew |
title |
Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma |
title_short |
Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma |
title_full |
Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma |
title_fullStr |
Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma |
title_full_unstemmed |
Microhabitat Partitioning among Stream-Dwelling juvenile Coho Salmon, Oncorhynchus kisutch , and Dolly Varden, Salvelinus malma |
title_sort |
microhabitat partitioning among stream-dwelling juvenile coho salmon, oncorhynchus kisutch , and dolly varden, salvelinus malma |
publisher |
Canadian Science Publishing |
publishDate |
1990 |
url |
http://dx.doi.org/10.1139/f90-256 http://www.nrcresearchpress.com/doi/pdf/10.1139/f90-256 |
long_lat |
ENVELOPE(-99.001,-99.001,72.668,72.668) ENVELOPE(7.656,7.656,62.534,62.534) |
geographic |
Prince of Wales Island Varden |
geographic_facet |
Prince of Wales Island Varden |
genre |
Prince of Wales Island Alaska |
genre_facet |
Prince of Wales Island Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 47, issue 12, page 2297-2306 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f90-256 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
47 |
container_issue |
12 |
container_start_page |
2297 |
op_container_end_page |
2306 |
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1795672803381346304 |