Do impassable dams and flow regulation constrain the distribution of green sturgeon in the Sacramento River, California?
نویسندگان
چکیده
in the Sacramento River, California? By E. A. Mora, S. T. Lindley, D. L. Erickson and A. P. Klimley Joint Institute for Marine Observations, UC Santa Cruz, Santa Cruz, CA, USA; Southwest Fisheries Science Center, National Marine Fisheries Service, Santa Cruz, CA, USA; Pew Institute for Ocean Science, Rosenstiel School of marine and Atmospheric Science, University of Miami, Miami, FL, USA; Department of Wildlife, Fish, & Conservation Biology, University of California, Davis, CA, USA
منابع مشابه
Stranding of Spawning Run Green Sturgeon in the Sacramento River: Post-Rescue Movements and Potential Population-Level Effects
The lower portion of the Sacramento River, California, has been highly engineered to protect low-lying surrounding communities from annual flood events. While engineered floodplains have provided adequate protection for the surrounding communities, there remain unintended consequences to migratory fish that become stranded during high flow events. In April 2011, we rescued 24 threatened Green S...
متن کاملGREEN STURGEON The green sturgeon and its environment: introduction
The green sturgeon, Acipenser medirostris, is one of two acipenserid fishes native to the temperate waters of the Pacific coast of North America. Originally, three species of sturgeon were described from this region, and this one named ‘‘medirostris’’ or ‘‘middle snout’’ based on the length of its rostrum relative to the other purported species (Ayers 1854), both of which were later determined ...
متن کاملLarval green and white sturgeon swimming performance in relation to water-diversion flows
Little is known of the swimming capacities of larval sturgeons, despite global population declines in many species due in part to fragmentation of their spawning and rearing habitats by man-made water-diversion structures. Larval green (Acipenser medirostris) and white sturgeon (Acipenser transmontanus) inhabit the highly altered Sacramento-San Joaquin watershed, making them logical species to ...
متن کاملUnscreened Water-Diversion Pipes Pose an Entrainment Risk to the Threatened Green Sturgeon, Acipenser medirostris
Over 3,300 unscreened agricultural water diversion pipes line the levees and riverbanks of the Sacramento River (California) watershed, where the threatened Southern Distinct Population Segment of green sturgeon, Acipenser medirostris, spawn. The number of sturgeon drawn into (entrained) and killed by these pipes is greatly unknown. We examined avoidance behaviors and entrainment susceptibility...
متن کاملIndirect genetic estimates of breeding population size in the polyploid green sturgeon (Acipenser medirostris).
The utility of genetic measures for kinship reconstruction in polysomic species is not well evaluated. We developed a framework to test hypotheses about estimating breeding population size indirectly from collections of outmigrating green sturgeon juveniles. We evaluated a polysomic dataset, in allelic frequency and phenotypic formats, from green sturgeon to describe the relationship among know...
متن کامل