Population estimation methods to quantify temporal variation in fish accumulations downstream of a weir
Population estimation methods to quantify temporal variation in fish accumulations downstream of a weir
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DOI：
10.1111/j.1365-2400.2006.00513.x
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发表时间：
2006-12-01
影响因子：
2
通讯作者：
Baumgartner, L. J.
中科院分区：
文献类型：
--
作者：
Baumgartner, L. J.
7个迁徙物种的种群规模的时间变化进行了评估，在2年的时间内建造一个鱼道的Murrumbidgee河，澳大利亚。标记-再捕获（查普曼-彼得森）和刀切去除方法，在3个月的时间间隔，以确定洄游鱼类种群的组成和大小。两种方法之间未检测到种群大小估计值的差异。然而，Jackknife去除估计量通常为更多的物种提供较少的变量估计。种群规模最大的是在夏季和秋季，当骨鲱鱼，Nematalosa erebi Gunther，和普通鲤鱼，鲤鱼L。，统治着移民社区。这两个估算器提供的数据对进一步发展适当的鱼类通道设施至关重要，并可适用于对洄游鱼类种群规模感兴趣的其他地点。
Temporal changes in the population sizes of seven migratory species were assessed over a 2-year period prior to the construction of a fishway on the Murrumbidgee River, Australia. Mark-recapture (Chapman-Petersen) and Jackknife removal methods were used at 3-month intervals to determine the composition and sizes of migratory fish populations. No difference in population size estimate was detected between the two methods. However, the Jackknife removal estimator generally provided less variable estimates for a greater number of species. Population sizes were greatest during summer and autumn when bony herring, Nematalosa erebi Gunther, and common carp, Cyprinus carpio L., dominated the migratory community. Both estimators provided data essential to further the development of an appropriate fish passage facility and could be applied to other sites where the size of migratory fish populations is of interest.