White Sturgeon Population Viability

Generating cost-efficient hydropower and protecting.

White sturgeon population viability. In this paper we describe our approach to population viability analysis of riverine fishes in general and Snake River white sturgeon in particular. We used PVA to evaluate threats to recovery of shortnose sturgeon Acipenser brevirostrum in a river adjacent to Fort Stewart Georgia USA. The white sturgeon subpopulation above CJ Strike Dam is the largest subpopulation in the Snake River above Hells Canyon Dam and one of two remaining naturally reproducing subpopulations in the Snake River.

The recovery goal specified in the draft national recovery strategy for white sturgeon is to ensure the long-term viability of naturally-reproducing populations throughout the species. Portions of the Columbia River upstream from Grand Coulee Dam ensure the persistence and viability of naturally-reproducing populations and restore opportunities for beneficial use if feasible. Viability refers to the ability.

Although neither white sturgeon or fall chinook salmon are federally listed species both have experienced significant declines stimulating an interest in discovering what can be done to prevent extinction. There are 12 critical habitat areas identified for the Upper Columbia River population of White Sturgeon totalling a combined river length of approximately 307 kilometres and a combined lake and river area of approximately 42 square kilometres. Ministry of Environment.

From 002 in the Upper Fraser to 03 in the Nechako population for large sturgeon ages 10. Second we used an age-structured population model to predict the life history parameters eg adult mortality and the percentage of adult females that spawn annually that most strongly influenced adult abun-dance and recruitment to age-1. Damming of large rivers in the US.

STURGEON POPULATION VIABILITY 1165 lation trends over a 10-year period. Pacific Northwest and Canada has divided the historical population of white sturgeon Acipenser transmontanus into more than 36. The white sturgeon is a freshwater fish and is under the responsibility of the federal government and management by the BC.

2009-06-25 Available population estimates for upper Columbia River white sturgeon have ranged between 900 and 1400 wild fish in the Canadian portion of the basin and 1500 to 2000 fish from the Canada-US. 2000-09-01 Similarly all of the authors are in the process of conducting a population viability analysis PVA of white sturgeon populations in the Snake River. The species most distinguishing features include a mainly cartilaginous skeleton long scaleless body covered with rows of large bony plates called scutes on the back and sides shark-like heterocercal tail and four barbels between the mouth and an elongated snout.