Sockeye and chinook salmon brood tables, Goodnews River, Alaska, 1981-2015.

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 an original brood table for sockeye salmon from the Goodnews River (Middle Fork) in excel format, an R script that slightly reformats this dataset into a format consistent with other brood tables collected as part of the State of Alaskan Salmon and People project, and the reformatted file as a .csv file. Also included is a Alaska Department of Fish and Game report (pdf format), from which the chinook brood table (Goodnews_chinook.csv) was extracted. For the sockeye brood table, 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). The chinook brood table contains ages given in total age (freshwater age + ocean age + 1).亲代种群表（Brood table）又称洄游量重建表（run reconstructions），依托年度总洄游种群估算值（商业捕捞量与产卵逃逸种群量之和）以及年龄样本，可估算各年龄组的补充群体规模。该类数据可为鲑鱼生物学家解析鲑鱼种群生产力与生活史提供关键支撑。本数据集包含以下内容：一是源自古德纽斯河（中支流）红鲑（Sockeye salmon）的原始亲代种群表，格式为Excel；二是一段R脚本，可将该数据集轻度重格式化，使其格式与《阿拉斯加州鲑鱼与人类计划》所收集的其他亲代种群表保持一致；三是重格式化后的CSV格式文件。数据集还包含一份阿拉斯加鱼类与野生动物管理局（Alaska Department of Fish and Game）的PDF格式报告，奇努克鲑（Chinook salmon）亲代种群表（Goodnews_chinook.csv）即从该报告中提取得到。红鲑亲代种群表采用欧洲年龄标记法，其年龄组标注规则为：第一位数字代表入海前在淡水环境中的越冬次数（淡水越冬1次对应年龄组为age-1.X），第二位数字代表在海洋环境中的越冬次数（海洋越冬3次对应年龄组为age-X.3）。奇努克鲑亲代种群表的年龄以总年龄形式标注，计算公式为：淡水越冬时长 + 海洋越冬时长 + 1。