Increasing Dominance of Odd-Year Returning Pink Salmon
Increasing Dominance of Odd-Year Returning Pink Salmon
复制标题
奇数年回归的粉红鲑鱼的主导地位不断增强
DOI：
10.1080/00028487.2014.889747
复制
发表时间：
2014
影响因子：
1.4
通讯作者：
M. Folkes
中科院分区：
文献类型：
--
作者：
J. Irvine;C. Michielsens;M. O'Brien;B. White;M. Folkes
AbstractThe hypothesis that abundance patterns differ between even- and odd-year returning Pink Salmon Oncorhynchus gorbuscha was examined using data from the eastern and western North Pacific Ocean, northern and southern British Columbia, and biologically based conservation units, which are Canadian groupings of salmon that are genetically and/or ecologically distinct from each other. Detailed data from (mostly) southern British Columbia were examined to test hypotheses that the differences between even- and odd-year broodlines were due to fishing, broodline interactions, limitations in freshwater or the ocean, and/or density dependence. The odd-year broodline has become increasingly predominate over the genetically distinct even-year broodline on both sides of the Pacific and in five of six British Columbia regions. Five analytical approaches revealed abundances were generally increasing for odd-year conservation units and declining or stable for even-year conservation units. Recent increases in odd-yea...
