Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba

Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba

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Abundance of fishes was determined at stations located in several western Manitoba streams. By use of a multivariate classification procedure, groups of species were identified which were similar in their distribution among arbitrarily defined habitat types. The largest group of species was associ...

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Main Author: Valiant, Hugh
Published: 2012
Online Access:http://hdl.handle.net/1993/6196
id ndltd-LACETR-oai-collectionscanada.gc.ca-MWU.1993-6196
record_format oai_dc
spelling ndltd-LACETR-oai-collectionscanada.gc.ca-MWU.1993-61962014-03-29T03:44:30Z Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba Valiant, Hugh Abundance of fishes was determined at stations located in several western Manitoba streams. By use of a multivariate classification procedure, groups of species were identified which were similar in their distribution among arbitrarily defined habitat types. The largest group of species was associated with areas of low current speed, but within high gradient sections of the streams. Species diversity (defined as the number of fish species present) was related to structural features of the environment. By an analysis of variance technique, it was concluded that stream gradient and current speed explained most of the variation in diversity. When a predator (Esox lucius) was present, diversity and abundance of the remaining species were both reduced. 2012-05-15T15:54:56Z 2012-05-15T15:54:56Z 1975 http://hdl.handle.net/1993/6196
collection NDLTD
sources NDLTD
description Abundance of fishes was determined at stations located in several western Manitoba streams. By use of a multivariate classification procedure, groups of species were identified which were similar in their distribution among arbitrarily defined habitat types. The largest group of species was associated with areas of low current speed, but within high gradient sections of the streams. Species diversity (defined as the number of fish species present) was related to structural features of the environment. By an analysis of variance technique, it was concluded that stream gradient and current speed explained most of the variation in diversity. When a predator (Esox lucius) was present, diversity and abundance of the remaining species were both reduced.
author Valiant, Hugh
spellingShingle Valiant, Hugh
Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba
author_facet Valiant, Hugh
author_sort Valiant, Hugh
title Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba
title_short Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba
title_full Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba
title_fullStr Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba
title_full_unstemmed Species diversity and within-stream distribution of stream dwelling fishes from western Manitoba
title_sort species diversity and within-stream distribution of stream dwelling fishes from western manitoba
publishDate 2012
url http://hdl.handle.net/1993/6196
work_keys_str_mv AT valianthugh speciesdiversityandwithinstreamdistributionofstreamdwellingfishesfromwesternmanitoba
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