Implications of territory size for the measurement and prediction of salmonid abundance in streams
Information about territory size is useful for both the measurement and prediction of salmonid abundance. Percent habitat saturation (PHS), the percentage of the stream area occupied by the territories of salmonid fishes, is a better measure of abundance than population density because the former in...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1998
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Online Access: | http://dx.doi.org/10.1139/d98-018 http://www.nrcresearchpress.com/doi/pdf/10.1139/d98-018 |
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crcansciencepubl:10.1139/d98-018 2023-12-17T10:27:20+01:00 Implications of territory size for the measurement and prediction of salmonid abundance in streams Grant, JWA Steingrímsson, S Ó Keeley, E R Cunjak, R A 1998 http://dx.doi.org/10.1139/d98-018 http://www.nrcresearchpress.com/doi/pdf/10.1139/d98-018 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue S1, page 181-190 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1998 crcansciencepubl https://doi.org/10.1139/d98-018 2023-11-19T13:38:25Z Information about territory size is useful for both the measurement and prediction of salmonid abundance. Percent habitat saturation (PHS), the percentage of the stream area occupied by the territories of salmonid fishes, is a better measure of abundance than population density because the former integrates the effects of (a) several age-classes or species in a stream, and (b) variation in growth rate or sampling date. "Effective density" or "effective PHS," calculated by weighting crude density (no.·m -2 ) or PHS by the number of organisms in the sampling unit, more accurately reflects density from the organism's point of view than does crude density or PHS. Effective density and PHS of Atlantic salmon (Salmo salar) in Catamaran Brook, New Brunswick, increased by 0.4 fish per m 2 and 4%, respectively, for each order of magnitude decrease in the area of the sampling unit. Literature data suggested that territory size is inversely related to food abundance and can be used to predict changes in salmonid abundance that accompany changes in food abundance. The allometry of territory size was a better predictor of the decline in density of a cohort of Atlantic salmon in Catamaran Brook than the allometry of metabolic requirements. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 55 S1 181 190 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Grant, JWA Steingrímsson, S Ó Keeley, E R Cunjak, R A Implications of territory size for the measurement and prediction of salmonid abundance in streams |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Information about territory size is useful for both the measurement and prediction of salmonid abundance. Percent habitat saturation (PHS), the percentage of the stream area occupied by the territories of salmonid fishes, is a better measure of abundance than population density because the former integrates the effects of (a) several age-classes or species in a stream, and (b) variation in growth rate or sampling date. "Effective density" or "effective PHS," calculated by weighting crude density (no.·m -2 ) or PHS by the number of organisms in the sampling unit, more accurately reflects density from the organism's point of view than does crude density or PHS. Effective density and PHS of Atlantic salmon (Salmo salar) in Catamaran Brook, New Brunswick, increased by 0.4 fish per m 2 and 4%, respectively, for each order of magnitude decrease in the area of the sampling unit. Literature data suggested that territory size is inversely related to food abundance and can be used to predict changes in salmonid abundance that accompany changes in food abundance. The allometry of territory size was a better predictor of the decline in density of a cohort of Atlantic salmon in Catamaran Brook than the allometry of metabolic requirements. |
format |
Article in Journal/Newspaper |
author |
Grant, JWA Steingrímsson, S Ó Keeley, E R Cunjak, R A |
author_facet |
Grant, JWA Steingrímsson, S Ó Keeley, E R Cunjak, R A |
author_sort |
Grant, JWA |
title |
Implications of territory size for the measurement and prediction of salmonid abundance in streams |
title_short |
Implications of territory size for the measurement and prediction of salmonid abundance in streams |
title_full |
Implications of territory size for the measurement and prediction of salmonid abundance in streams |
title_fullStr |
Implications of territory size for the measurement and prediction of salmonid abundance in streams |
title_full_unstemmed |
Implications of territory size for the measurement and prediction of salmonid abundance in streams |
title_sort |
implications of territory size for the measurement and prediction of salmonid abundance in streams |
publisher |
Canadian Science Publishing |
publishDate |
1998 |
url |
http://dx.doi.org/10.1139/d98-018 http://www.nrcresearchpress.com/doi/pdf/10.1139/d98-018 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue S1, page 181-190 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/d98-018 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
55 |
container_issue |
S1 |
container_start_page |
181 |
op_container_end_page |
190 |
_version_ |
1785579166701191168 |