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Late summer and fall use of stream margins by young-of year brown trout in a high-elevation stream

Journal of Freshwater Ecology

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Abstract

We determined the relative abundance of young-of-year (YOY) brown trout (Salmo trutta) from late summer to fall during day and night in stream margin habitats of Douglas Creek, Wyoming. No significant differences in relative abundance were observed from August 14 through October 26. Few YOY brown trout were observed during the day over the entire sampling period, but significantly greater numbers were seen at night. Within stream margins, YOY brown trout of 36-75 mm total length primarily resided in concealment cover among interstices of cobbie during the day and emerged at night. Because no significant change in relative abundance was observed throughout the study period, we conclude that a shift to winter habitat did not occur up until three days prior to ice formation when the diurnal range in water temperature was 2.5-7.5??C.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Late summer and fall use of stream margins by young-of year brown trout in a high-elevation stream
Series title:
Journal of Freshwater Ecology
Volume
12
Issue:
2
Year Published:
1997
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
291
Last page:
302
Number of Pages:
12