Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
Each year, juveniles of eight salmonid species enter the Salish Sea — the inland marine waters between northwestern Washington, USA, and British Columbia, Canada. These species vary in the proportions remaining there and migrating to feed in the Pacific Ocean. Such differential migration affects their growth rates and exposure to habitat alteration, predators, fisheries, and contaminants. We review these diverse migration patterns and present data from Puget Sound illustrating the variation in downstream migration timing, residency in the Salish Sea, and upriver return timing. Recreational catch records indicate that proportionally fewer remain in the Salish Sea than in past decades for several species, and the declines began after peaks in the late 1970s – early 1980s. These declines resist easy explanation because the factors controlling residency are poorly understood, and the Salish Sea has changed over the past decades. Regardless of the cause, the diversity of migration patterns is important to the ecology of the salmon and trout species and to the humans and other members of the Salish Sea community with which they interact.

中文翻译：

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太平洋鲑鱼、鳟鱼和红点鲑对萨利希海的多样化和不断变化的利用

加拿大渔业和水生科学杂志，印刷前。
每年，八种鲑鱼的幼鱼进入萨利希海——美国华盛顿西北部和加拿大不列颠哥伦比亚省之间的内陆海域。这些物种留在那里的比例各不相同，并迁徙到太平洋中觅食。这种差异迁移会影响它们的生长速度和对栖息地改变、捕食者、渔业和污染物的暴露。我们回顾了这些不同的迁移模式，并提供了普吉特海湾的数据，说明了下游迁移时间、萨利希海的居住地和上游返回时间的变化。休闲渔获记录表明，萨利希海中的几个物种比过去几十年的数量减少了，并且下降开始于 1970 年代后期 - 1980 年代初期的高峰之后。这些下降难以解释，因为控制居住的因素知之甚少，而萨利希海在过去几十年中发生了变化。不管是什么原因，迁徙模式的多样性对于鲑鱼和鳟鱼物种的生态以及与它们相互作用的人类和萨利希海群落的其他成员都很重要。