文章基本信息

标题：Movements of Rainbow Trout in Response to Dissolved Oxygen and Food Availability in Lake Ogallala, Nebraska
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作者：Tadd M. Barrow ; Edward J. Peters
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2001
卷号：16
期号：3
页码：321-329
DOI：10.1080/02705060.2001.9663819
出版社：Taylor & Francis
摘要：In October 1997, Lake Ogallala, Nebraska was treated to remove non-game competitors, and in June 1998 an aeration system was installed to increase dissolved oxygen concentrations. Ultrasonic telemetry was used to determine movements, habitat use, and distribution of 51 rainbow trout (Oncorhynchus mykiss) before and after treatment. Rainbow trout preferred areas with abundant food items, water less than 2 m deep, dissolved oxygen readings >6 mg/l, and temperatures <20 °C. Sixty-nine percent of all trout locations were in shallow water areas where benthic macroinvertebrate densities were significantly higher than in other portions of the lake. The renovation was successful at removing non-game competitors and led to an indirect increase in invertebrate densities.