Coho salmon brood table, Kuskokwim River, Alaska, 2000-2012

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. Archived here are the original PDF from which the data were extracted, the original .csv file with this extracted data, an R script that slightly reformats 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 table as a .csv file. 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).

亲本表（Brood tables）亦称洄游量重建表（run reconstructions），通过总洄游量（商业捕捞量与逃逸量之和）的年度估算值及年龄样本，估算各年龄组的补充个体数量。此类数据可为鲑鱼生物学家解析鲑鱼生产力与生活史提供关键支撑。本存档库包含提取本数据集所用的原始PDF文档、存储提取所得数据的原始.csv文件、可将数据集轻度格式化至与阿拉斯加鲑鱼与人类状况项目（State of Alaskan Salmon and People project，https://alaskasalmonandpeople.org/）所收集的其他亲本表格式统一的R脚本，以及格式化后的.csv格式表格文件。年龄组采用欧洲标记法：第一位数字代表入海前在淡水环境中越冬的冬季时长（淡水越冬1个冬季对应age-1.X），第二位数字代表在海洋环境中越冬的冬季时长（海洋越冬3个冬季对应age-X.3）。