Schwarz C J, Dempson J B
Department of Statistics, University of Manitoba, Winnipeg, Manitoba, Canada.
Biometrics. 1994 Mar;50(1):98-108.
A mark-recapture experiment was conducted applying a two-sample stratified technique to estimate the number of Atlantic salmon smolts, Salmo salar, migrating out of the Conne River, Newfoundland. We developed a model where parameters are introduced to describe the mean time for the salmon to migrate between the release site and recapture site and to describe the probability of capture on a particular date. The latter are then used to expand the number of untagged smolts captured to estimate the daily run sizes. We discuss the advantages of this new approach over other models. For example, this formulation allows great flexibility in the experimental design, is robust to violations of assumptions, and allows the influence of environmental factors upon the parameters to be investigated.
进行了一项标记重捕实验，采用两样本分层技术来估计从纽芬兰康奈河洄游的大西洋鲑幼鱼（Salmo salar）的数量。我们开发了一个模型，引入参数来描述鲑鱼在放流点和重捕点之间洄游的平均时间，并描述在特定日期被捕捞的概率。然后利用后者来推算未标记幼鱼的捕获数量，以估计每日洄游规模。我们讨论了这种新方法相对于其他模型的优势。例如，这种公式在实验设计中具有很大的灵活性，对假设的违背具有鲁棒性，并且能够研究环境因素对参数的影响。
