51813_Sturgeon biodioversity an.PDF

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Occurrence and distribution of shortnosesturgeon,Acipenser

brevirostrum,in the upper- tidal Delaware River. Estuaries 10:

337-341.

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to different salinity and dissolved oxygen concentrations

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used when wild populations are near extirpation

and anthropogenic impacts cannot be corrected be

stocking may temporarily increase adult abun-

dance, but it may alter the genetic basis of local ad-

aptations of the wild population, possibly resulting

in long-term reduction of individual fitness and de-

fore the population is extirpated. Enhancement

cline of the population (Waples 1991, Flemming 1994).

Acknowledgements

Thanks to Vadim J. Birstein John Waldman and

Robert Boyle for the invitation to attend the Inter-

national Conference on Sturgeon Biodiversity and

conservation. I thank members of the shortnose

Sturgeon Recovery Team (Mary Moser, Gordon

Doug Cooke of South Carolina for providing addi-

tional information, reviewing the manuscript, or

both. John Waldman, Matt Droud, Vadim J. Bir-

Rogers and Tom Squiers) and Mark Collins and

stein and William E. Bemis contributed editorial re- Dadswell, M.J., B.D. Taubert. T.S. Squiers. D, Marchette & J,

views and suggestions. Martin Horgan performed

statistical analyses.

Dovel,W.L., A.W. Pekovitch& T.J. Berggren. 1992. Biology of

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