Effect of Measurement Error on Tests of Density Dependence of Catchability for Walleyes in Northern Wisconsin Angling and Spearing Fisheries
Effect of Measurement Error on Tests of Density Dependence of Catchability for Walleyes in Northern Wisconsin Angling and Spearing Fisheries
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测量误差对威斯康星州北部钓鱼和鱼叉渔业中白眼鱼可捕获性密度依赖性测试的影响
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
S. W. Hewett
中科院分区：
文献类型：
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作者：
M. Hansen;T. Beard;S. W. Hewett
摘要我们试图确定多少测量误差影响测试的密度依赖性的矛和钓鱼捕捞率（渔获量/小时）和海象种群密度（数量/英亩）在北方威斯康星州湖泊之间的定量关系的海象砂vitreus。叉捕率的平均测量误差是大眼海象成虫密度的平均测量误差的43.5倍，而钓捕率的平均测量误差仅是大眼海象成虫密度的平均测量误差的5.6倍。的偏差校正估计之间的关系，鱼叉捕捞率和成年海象种群密度是相似的普通最小二乘回归估计，但显着不同的几何平均值（GM）的功能回归估计。相比之下，偏误校正估计的钓鱼渔获量和总海象种群密度之间的关系是中等的。
Abstract We sought to determine how much measurement errors affected tests of density dependence of spearing and angling catchability for walleye Sander vitreus by quantifying relationships between spearing and angling catch rates (catch/h) and walleye population density (number/acre) in northern Wisconsin lakes. The mean measurement error of spearing catch rates was 43.5 times greater than the mean measurement error of adult walleye population densities, whereas the mean measurement error of angling catch rates was only 5.6 times greater than the mean measurement error of adult walleye population densities. The bias-corrected estimate of the relationship between spearing catch rate and adult walleye population density was similar to the ordinary-least-squares regression estimate but differed significantly from the geometric mean (GM) functional regression estimate. In contrast, the bias-corrected estimate of the relationship between angling catch rate and total walleye population density was intermediate...