Sockeye salmon brood tables, northeastern Pacific, 1922-2016

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 reformated and merged brood tables from Alaska, British Columbia, and Washington. These datasets were gathered as part of the State of Alaskan Salmon and People project (https://alaskasalmonandpeople.org/). Source information for the datasets can be found in the SourceInfo.csv file. A description of the merging and quality assurance process can be found in the broodTableProcessing.html file. Productivity (R/S) should not be directly compared among the stocks because some escapement counts are indices. 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 se (3 winters at sea = age-X.3).

亲鱼繁殖表（Brood tables，亦称洄游种群重建表run reconstructions）基于总洄游量（total run，即商业捕捞量commercial catch与逃逸量escapement之和）的年度估算值及年龄抽样数据，估算各年龄组（age class）的补充个体数。此类数据可帮助鲑鱼生物学家解析鲑鱼生产力与生活史特征。该类数据存在多种格式，但通用结构为：行对应各繁殖年份（brood year），列对应各年龄组的估算鱼类个体数量。本数据集整合了来自美国阿拉斯加州、加拿大不列颠哥伦比亚省与华盛顿州的经标准化重构与合并的亲鱼繁殖表。这些数据集作为《阿拉斯加鲑鱼与人类现状》（State of Alaskan Salmon and People）项目（https://alaskasalmonandpeople.org/）的组成部分被收集。数据集的来源信息可参见SourceInfo.csv文件；数据合并与质量保障流程的说明可查阅broodTableProcessing.html文件。由于部分逃逸量计数为相对指数，因此不可直接比较不同种群间的生产力（R/S，即补充量-亲体量比）。本数据集采用欧洲式年龄标注法（European Notation）：第一个数字代表入海前在淡水越冬的冬季数（淡水越冬1年对应年龄组1.X），第二个数字代表在海洋中越冬的冬季数（海洋越冬3年对应年龄组X.3）。