Possible Linkages Between Ecosystem Measures and the Demographics of a Weddell Seal Population

9420818威德尔海豹是一种重要的上层营养层物种，由于其靠近南极支持设施，一直是长期研究的重点。最广泛的调查涉及麦克默多站的韦德尔海豹种群，那里的研究和监测工作始于20世纪60年代初，自那时以来一直在继续。该项目的目标是：1)继续进行长期的标记研究，完成对所有出生在麦克默多健康种群中的幼崽进行标记所需的实地工作，并替换以前标记的个体上的标记，以便它们不会从标记的种群中丢失；2)每年更新种群参数的估计，并继续分析和测试与该数据库相关的假设。为了支持这些分析，我们将进行必要的标记-重新捕获调查，以获得当前捕获-重新捕获模式所需的所有估计数。

9420818 Siniff The Weddell seal is an important upper trophic level species that has been the focus of long-term studies because of its proximity to Antarctic support facilities. The most extensive investigations have involved the Weddell seal population at McMurdo Station where research and monitoring efforts began in the early 1960s and have continued since that date. The objectives of this project are 1) to continue the long-term tagging studies by completing the field work necessary to tag all pups born into the McMurdo sound population and to replace tags on previously tagged individuals so they will not be lost from the tagged population and 2) to update estimates of population parameters annually and to continue the analyses and test of hypotheses associated with this data base. In support of these analyses we will carry out mark-recapture surveys that are necessary to obtain all the estimates required for current capture-recapture models.