Effects of plunge pool configuration on downstream passage survival of juvenile blueback herring  

作　　者：Theodore Castro-Santos Kevin B.Mulligan Micah Kieffer Alexander J.Haro 

机构地区：[1]u.s.geological survey-leetown science center,s.o.conte anadromous fish research center,one migratory way,turners falls,ma,01376,usa

出　　处：《Aquaculture and Fisheries》2021年第2期135-143,共9页渔业学报（英文）

基　　金：This work was funded through a collaborative agreement between USGS and Albany Engineering Corporation.,Albany,NY(AE)(agreement#18ENLB500001).

摘　　要：Anadromous alosines are widespread throughout the Northern Hemisphere.Juveniles of this clade are notoriously fragile animals that are at high risk of injury and death associated with passage at hydroelectric facilities.Although turbine mortality is a common concern,conditions encountered when bypassed around these routes may also be hazardous.Downstream bypass structures typically discharge into plunge pools,which are highly turbulent and may cause mechanical injury.We subjected live,actively migrating juvenile blueback herring to a suite of realistic plunge pool conditions(3 m drop,pool depth of 60-180 cm,and discharge of 0.28-1.70 m^(3)/s)and monitored them for≥96 h.Survival was generally higher than expected(>80%in all cases).However,both plunge pool volume and total discharge affected survival with elevated discharge and shallow conditions associated with increased mortality.Mortality was often delayed:rates remained elevated throughout the monitoring period,indicating that survival studies based on shorter periods underestimate total mortality.

关 键 词：Fish passage River herring Blueback herring Plunge pool SURVIVAL 

分 类 号：S95[农业科学—水产养殖]