Predicting benefits of spawning-habitat rehabilitation to salmonid (Oncorhynchus spp.) fry production in a regulated California river
Predicting benefits of spawning-habitat rehabilitation to salmonid (Oncorhynchus spp.) fry production in a regulated California river
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预测产卵栖息地恢复对加州受管制河流中鲑鱼 (Oncorhynchus spp.) 鱼苗生产的益处
DOI：
10.1139/f04-077
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发表时间：
2004
影响因子：
2.4
通讯作者：
J. Wheaton
中科院分区：
文献类型：
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作者：
J. Merz;J. Setka;G. Pasternack;J. Wheaton
Joseph E.Merz，Jose D.Setka，Gregory B.Pasternack和Joseph M.Wheaton摘要：我们测试了这样一个假设，即产卵床增强提高了加州沙砾不足的受管制溪流中Chinook鲑鱼(Oncorhynchus Tshawytscha)胚胎的存活和生长。我们还检查了12个物理参数在产卵地点内的相关性，以及它们对Chinook鲑鱼和钢头鱼(Oncorhynchus MykISS)胚胎存活和生长的预测效果。种植在强化砾石中的鲑鱼胚胎比种植在非强化产卵砾石中的胚胎在上游阶段的存活率更高。没有观察到明显的增长。碎石层温度和基质大小与距离最低的不能通过的大坝下游的距离密切相关。砾石浊度与总悬浮物和挥发性固体也有很强的相关性。结合物理测量建立了预测鲑鱼和钢头胚胎存活和长度的多元回归模型。存活模型解释了鲑鱼和钢头鱼平均值附近87%和82%的变化。生长模型解释了鲑鱼和钢头鱼平均值附近95%和89%的变化。这些发现表明，加强产卵床可以提高退化栖息地中胚胎的存活率。此外，对产卵床操作前后的一系列物理参数的测量可以准确地预测对目标物种的益处。
Joseph E. Merz, Jose D. Setka, Gregory B. Pasternack, and Joseph M. Wheaton Abstract: We tested the hypothesis that spawning-bed enhancement increases survival and growth of chinook salmon (Oncorhynchus tshawytscha) embryos in a regulated California stream with a gravel deficit. We also examined how 12 physical parameters correlated within spawning sites and how well they predicted survival and growth of chinook salmon and steelhead (Oncorhynchus mykiss) embryos. Salmon embryos planted in enhanced gravels had higher rates of survival to the swim-up stage than embryos planted in unenhanced spawning gravels. No significant increase in growth was observed. Intergravel temperature and substrate size were strongly correlated with distance downstream from the lowest nonpassable dam. Intergravel turbidity and total suspended and volatile solids were also strongly correlated. Multiple-regression models were built with a combination of physical measurements to predict survival and length of salmon and steelhead embryos. Survival models accounted for 87% of the variation around the mean for salmon and 82% for steelhead. Growth models accounted for 95% of the variation around the mean for salmon and 89% for steelhead. These findings suggest that spawning-bed enhancement can improve embryo survival in degraded habitat. Additionally, measurements of a suite of physical parameters before and after spawning-bed manipulation can accurately predict benefits to target species.
日本粉红鲑鱼（Oncorhynchus gorbuscha）的种群动态：最近的增长是由孵化场计划还是气候变化解释的？
DOI：
--
发表时间：
2006
期刊：
Canadian Journal of Fisheries and Aquatic Sciences 63
影响因子：
--
作者：
K.Morita;S.H.Morita;M.Fukuwaka
通讯作者：
M.Fukuwaka