Lake Sturgeon Population Status and Demography in the Kettle River, Minnesota, 1992–2007
Lake Sturgeon Population Status and Demography in the Kettle River, Minnesota, 1992–2007
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明尼苏达州凯特尔河鲟鱼种群状况和人口统计，1992-2007 年
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
D. Staples
中科院分区：
文献类型：
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作者：
D. Dieterman;J. A. Frank;Nate Painovich;D. Staples
摘要：我们使用1992年至2007年收集的捕获-再捕获标记数据，评估了明尼苏达州凯特尔河湖鲟的种群状况，并估计了选定的人口统计参数。湖鲟是明尼苏达州特别关注的濒危物种，人口下降归因于过度捕捞，污染和水坝的建立。1995年，休闲渔业被关闭，凯特尔河上唯一的大坝（砂岩大坝）被拆除，部分原因是为了促进湖鲟鱼的恢复。最近垂钓者偶然捕获的湖鲟鱼引起了人们对重新开放休闲渔业的兴趣。我们收集信息以确定（1）凯特尔河人口的状况和人口统计学，（2）大坝拆除的影响，以及（3）重新开放休闲渔业的可行性。开放种群捕获-再捕获模型被用来检查种群状况，估计生存率、工龄以及生存和招募的相对重要性。
Abstract We assessed population status and estimated selected demographic parameters for lake sturgeon Acipenser fulvescens in the Kettle River, Minnesota, using capture–recapture tagging data collected from 1992 to 2007. The lake sturgeon is an imperiled species of special concern in Minnesota, with population declines attributed to overfishing, pollution, and establishment of dams. In 1995, the recreational fishery was closed and the only dam on the Kettle River (Sandstone Dam) was removed, in part to promote lake sturgeon recovery. Recent incidental capture of lake sturgeon by anglers is prompting interest in re-opening the recreational fishery. We gathered information to determine (1) status and demography of the Kettle River population, (2) the effect of dam removal, and (3) the feasibility of re-opening the recreational fishery. Open-population capture–recapture models were used to examine population status and estimate survival, seniority, and the relative importance of survival and recruitment for...