Distribution of Juvenile Bull Trout in a Thermal Gradient of a Plunge Pool in Granite Creek, Idaho
作者:
JosephL. Bonneau,
DennisL. Scarnecchia,
期刊:
Transactions of the American Fisheries Society
(Taylor Available online 1996)
卷期:
Volume 125,
issue 4
页码: 628-630
ISSN:0002-8487
年代: 1996
DOI:10.1577/1548-8659(1996)125<0628:DOJBTI>2.3.CO;2
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The distribution of juvenile bull troutSalvelinus confluentuswas observed on three nights (0000–0200 hours) during July 24–28, 1992, in a large plunge pool in Granite Creek, a direct tributary to Lake Pend Oreille in northern Idaho. The pool contained a strong side-to-side thermal gradient (8–15°C) created by the confluence of Granite Creek (water temperature 15°C) with Sullivan Springs, a much colder (8°C) stream of comparable discharge. Juvenile bull trout chose the coldest water available (8–9°C). Distribution of bull trout within the plunge pool could not be attributed to differences in water depth, substrate, velocity, overhanging cover, or interactions with other fish.
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