文章基本信息

标题：Relations between Climatological Variables and Larval Yellow Perch Abundance in Eastern South Dakota Glacial Lakes
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作者：Matthew J. Ward ; Marcy R. Anderson ; Shannon J. Fisher 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2004
卷号：19
期号：2
页码：213-218
DOI：10.1080/02705060.2004.9664534
出版社：Taylor & Francis
摘要：We evaluated relationships between climatological variables and abundance of larval yellow perch (Perca flavescens) in eastern South Dakota glacial lakes. Age-0 yellow perch were collected using a 0.75 m diameter ichthyoplankton net from May through mid-June at 7 to 10 d intervals. Highest correlation coefficients with larval yellow perch abundance were for April total precipitation (r-0.95-0.99; P=0.09-0.01; three lakes), mean March wind speed (r=-0.98 to -0.99; P=0.02-0.006; two lakes), mean of May average daily temperatures (1-0.78; P=0.12; one lake) and mean May wind speed (r=-0.82; P=0.02; one lake). Given the low number of years in some samples, individual years at times had undue influence on the relationship, resulting in high correlation coefficients. Multiple regression modeling resulted in improved models for only two of the seven lakes (R 2 =0.90-0.98; P=0.05-0.02). However, March through May weather patterns in some combination were related to larval yellow perch abundance in all seven study lakes. Larval abundance tended to be higher in years with less wind, more precipitation, and warmer air temperatures. Whether wind, temperature, or precipitation were most influential seemed to vary by lake.