Sockeye salmon brood tables, Washington, 1967-2011

Brood tables, also called run reconstructions, utilize annual estimates of the total run (commercial catch plus escapement), and samples of ages, to estimate the number of recruits per age class. These data are useful for salmon biologists to understand salmon productivity and salmon life histories. These data can come in a number of different formats, but generally follow the pattern of: rows for each brood year, and columns for the estimated number of fish in each age class. This dataset consists of reformatted sockeye salmon brood tables from Lake Washington. Age classes are given in European Notation, where the first number is the number of winters spent in freshwater before going to sea (1 winter in freshwater = age-1.X), and the second number is the number of winters spent at sea (3 winters at sea = age-X.3).亲鱼繁殖表（brood tables），又称洄游群重建表（run reconstructions），基于总洄游群（商业捕捞量与产卵逃逸量（escapement）之和）的年度估算值及年龄样本，估算各年龄组（age class）的补充个体（recruits）数量。此类数据可为鲑鱼生物学家开展鲑鱼生产力与生活史研究提供关键支撑。该类数据格式多样，但普遍遵循如下结构：行对应每个繁殖年度（brood year），列代表各年龄组的预估鱼类个体数。本数据集包含经重新格式化的华盛顿湖红大麻哈鱼（sockeye salmon）亲鱼繁殖表，其年龄组采用欧洲标记法（European Notation）：第一位数字表示入海前在淡水环境中越冬的时长（淡水越冬1年对应age-1.X），第二位数字表示在海洋环境中越冬的时长（海洋越冬3年对应age-X.3）。