File S1 - Assessing the Relative Importance of Local and Regional Processes on the Survival of a Threatened Salmon Population

Tables S1–S3. Table S1. Juvenile spring/summer Snake River Chinook salmon with PIT tags included in the study. Year of emigration and date and size at tagging are reported. The otolith-derived estimates for size at marine entry (FLME) and duration of time at liberty prior to marine entry (Release to ME) are included with estimated mean in-river migration rate (In-river), date of marine entry (ME) and the date and location of final detection along the Columbia River hydropower system. Table S2. Comparison between marked and unmarked Snake River yearling sp/su Chinook salmon. Mean (SE) size at marine entry, marine growth rate, date of marine entry, marine migration rate (body length per second), and size at capture by emigration year. Table S3. Annual values for model parameters. Smolt-to-adult return ratios (SAR) for Snake River spring/summer Chinook salmon; NPGO4_6 = mean value from April to June; PDO7_9 = mean value from July to September; CPUE6 = catch of yearling Chinook (fish km−1) in June; and CCI6 = Copepod Community Index in June are included. (DOCX)

附表S1至S3。
附表S1：本研究纳入的携带PIT标签（Passive Integrated Transponder）的春季/夏季型蛇河奇努克鲑幼鱼，其洄游年份、标记时的日期与体长均予以记录。本附表还一并提供耳石分析得到的海洋进入时体长（FLME）、海洋进入前自由活动时长（Release to ME）估算值，以及估算的河川平均洄游速率（In-river）、海洋进入日期（ME）与哥伦比亚河水力发电系统沿线的最终探测日期及位置。
附表S2：标记与未标记的蛇河一龄春季/夏季型奇努克鲑的对比数据集，包含海洋进入时的平均（标准误，SE, Standard Error）体长、海洋生长速率、海洋进入日期、海洋洄游速率（每秒体长增量），以及按洄游年份统计的捕获体长。
附表S3：模型参数的年度取值，涵盖蛇河春季/夏季型奇努克鲑的幼体-成体回归比（SAR, Smolt-to-Adult Return Ratio）；NPGO4_6为4至6月的平均北太平洋涡旋振荡（North Pacific Gyre Oscillation）值；PDO7_9为7至9月的平均太平洋年代际振荡（Pacific Decadal Oscillation）值；CPUE6为6月一龄奇努克鲑的单位捕捞努力量渔获量（单位：鱼·km⁻¹）；CCI6为6月桡足类群落指数（Copepod Community Index）。（DOCX）