Spatial expansion and increased population density of masu salmon parr independent of river restoration
Spatial expansion and increased population density of masu salmon parr independent of river restoration
复制标题
马苏鲑鱼的空间扩张和种群密度增加与河流恢复无关
DOI：
10.1007/s10228-018-0628-5
复制
发表时间：
2018
影响因子：
1.2
通讯作者：
Kishi Daisuke
中科院分区：
文献类型：
--
作者：
Sahashi Genki;Morita Kentaro;Kishi Daisuke
最近有报道称，在一些河流的栖息地恢复后，masu鲑的空间扩展和种群丰度增加，但没有研究对自然条件下这些类型的变化进行研究。结果表明，在未发生生境恢复的北海道东部河流中，马苏鲑鱼种群密度呈上升趋势。鱼类分布和种群密度的变化通常被认为是河流生境破坏和恢复的影响，但在评价这种变化时也应考虑到其他海洋环境条件的影响。
Spatial expansion and increased population abundance of masu salmonOncorhynchus masouhave been recently reported following habitat restoration in some rivers, but no studies have examined these types of changes under natural conditions. We found spatial expansion and increased population density of masu salmon parr in rivers of eastern Hokkaido where no habitat restoration had occurred during the period examined. Changes in the distribution and population densities of parr are often regarded as effects of river habitat destruction and restoration, yet such changes should be evaluated while taking into account the effects of other ocean environmental conditions as well.