Salmon brood tables, Westward Region, Alaska

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 brood tables from the Westward Region of Alaska. These datasets were gathered as part of the State of Alaskan Salmon and People project (https://alaskasalmonandpeople.org/). 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). For chinook salmon, only total age (age X) is given.

亲本表（亦称洄游重建表）借助年度总洄游量估算值（商业捕捞量与逃逸种群量之和）以及年龄样本数据，估算各年龄组的补充群体数量。此类数据有助于鲑鱼生物学家研究鲑鱼的生产力与生活史特征。该类数据存在多种格式，但普遍遵循如下结构：行代表每个亲代批次年份，列代表各年龄组的估算鱼类数量。本数据集包含源自阿拉斯加西部区域的格式化重构亲本表。本数据集隶属于“阿拉斯加鲑鱼与人类”项目（https://alaskasalmonandpeople.org/）。年龄组采用欧洲式年龄标注法：第一位数字代表入海前在淡水环境中度过的冬季时长（淡水越冬1年对应年龄-1.X），第二位数字代表在海洋中度过的冬季时长（海洋越冬3年对应年龄-X.3）。针对奇努克鲑（王鲑），仅标注其总年龄（年龄X）。