Migration Trends of Sockeye Salmon at the Northern Edge of Their Distribution
| Autor: | Charlie Lean, David C. Douglas, Merlyn Schelske, Kevin D. Keith, Michael P. Carey, Christian E. Zimmerman |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Fish migration Watershed biology business.industry Ecology 010604 marine biology & hydrobiology Distribution (economics) Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Subarctic climate Fishery Arctic Oncorhynchus Environmental science Ecosystem business Ecology Evolution Behavior and Systematics |
| Zdroj: | Transactions of the American Fisheries Society. 146:791-802 |
| ISSN: | 1548-8659 0002-8487 |
| DOI: | 10.1080/00028487.2017.1302992 |
| Popis: | Climate change is affecting arctic and subarctic ecosystems, and anadromous fish such as Pacific salmon Oncorhynchus spp. are particularly susceptible due to the physiological challenge of spawning migrations. Predicting how migratory timing will change under Arctic warming scenarios requires an understanding of how environmental factors drive salmon migrations. Multiple mechanisms exist by which environmental conditions may influence migrating salmon, including altered migration cues from the ocean and natal river. We explored relationships between interannual variability and annual migration timing (2003–2014) of Sockeye Salmon O. nerka in a subarctic watershed with environmental conditions at broad, intermediate, and local spatial scales. Low numbers of Sockeye Salmon have returned to this high-latitude watershed in recent years, and run size has been a dominant influence on the migration duration and the midpoint date of the run. The duration of the migration upriver varied by as much as 25 d ... |
| Databáze: | OpenAIRE |
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