Sockeye salmon brood tables, PWS and Southeast, Alaska, 1958-2016

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. This dataset consists of: original brood tables in excel format for sockeye salmon from Copper River, Coghill and Eshamy Lakes of Prince William Sound (PWS), and Chilkoot, Redoubt, and Speel Lakes of Southeast Alaska; R scripts that slightly reformat the dataset into a format consistent with other brood tables collected as part of the State of Alaskan Salmon and People project (https://alaskasalmonandpeople.org/); and the reformatted tables as .csv files. 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).

繁育表（brood table）又称洄游量重建表（run reconstructions），通过总洄游量（商业捕捞量与逃逸种群量之和）的年度估算值及年龄样本，估算各年龄组的补充个体数量。此类数据可辅助鲑鱼生物学家研究鲑鱼的生产力与生活史特征。本数据集包含以下内容：来自阿拉斯加威廉王子湾（PWS）铜河、科格希尔湖与埃沙米湖，以及阿拉斯加东南部奇尔卡特湖、雷杜特湖和斯皮尔湖的红大马哈鱼（sockeye salmon）原生繁育表（Excel格式）；适配“阿拉斯加鲑鱼与民众项目”（https://alaskasalmonandpeople.org/）所收集的其他繁育表格式的轻度格式化R脚本；以及格式化后的CSV格式繁育表文件。年龄组采用欧洲年龄标注法（European Notation）：第一位数字代表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），第二位数字代表在海洋中越冬的时长（海洋越冬3年对应age-X.3）。