From salmon to shad: Shifting sources of marine‐derived nutrients in the Columbia River Basin
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چکیده
منابع مشابه
from linguistics to literature: a linguistic approach to the study of linguistic deviations in the turkish divan of shahriar
chapter i provides an overview of structural linguistics and touches upon the saussurean dichotomies with the final goal of exploring their relevance to the stylistic studies of literature. to provide evidence for the singificance of the study, chapter ii deals with the controversial issue of linguistics and literature, and presents opposing views which, at the same time, have been central to t...
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In 1992, the first listings of Columbia River salmon under the Endangered Species Act occurred. Regulation of the Columbia River gillnet fishery since that time has greatly reduced fishing time and economic return to the fishing fleet. The counties where two-thirds of the gillnetters reside have registered negative social statistics during this period, including drug and alcohol abuse rates, in...
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Construction of four dams on the lower Snake River (in northwestern United States) between 1961 and 1975 altered salmon spawning habitat, elevated smolt and adult migration mortality, and contributed to severe declines of Snake River salmon populations. By applying a matrix model to long-term population data, we found that (i) dam passage improvements have dramatically mitigated direct mortalit...
متن کاملIncreased mitochondrial DNA diversity in ancient Columbia River basin Chinook salmon Oncorhynchus tshawytscha
The Columbia River and its tributaries provide essential spawning and rearing habitat for many salmonid species, including Chinook salmon (Oncorhynchus tshawytscha). Chinook salmon were historically abundant throughout the basin and Native Americans in the region relied heavily on these fish for thousands of years. Following the arrival of Europeans in the 1800s, salmon in the basin experienced...
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ژورنال
عنوان ژورنال: Ecology of Freshwater Fish
سال: 2017
ISSN: 0906-6691,1600-0633
DOI: 10.1111/eff.12348