51813_Sturgeon biodioversity an.PDF

er 1983.Kallemeyn1983.Cochnauer et al.1985, Ro- chard et al.1990,Moyle et al.^1 ). Five of theNorth American sturgeons arelisted ...

Restrictingfishingmortality tooffset lossesfrom the Hudson River has aminimumsize limit of 152 othersources cm (Kahnle et al^3 ) ...

Figure I .Relationship betweenfishingmortalityrate (F) and Figure 2.Effects of an increase in thecurrentmortalityrate ( Z ) corr ...

and increasingtotalmortality toZ= 0.23willreduce theEPRvalue lo 20% ofEPRmax(Figure 2). For paddlefish, increasing the total mor ...

that is reduced by 7%,fromF= 0.37 toF= 0.345 (Table 2). Eventhoughfishing may not be thereason for an observed decline inabundan ...

white sturgeon, Acipenser tuansmontanus, in the Columbia River downstream from Bonneville Dam. pp. 185–200. In: R.C. Beamesderfe ...

Sturgeons from the western and eastern north Pacific rim: the Sakhalinsturgeon,AcipenserMiikadoi,102 cm TL from the Datta (Tumni ...

Environmental Biology of Fishes 48: 407–417. 1997. © 1997Kluwer Academic Publishers. Printed in the Netherlands Alternatives for ...

sturgeonlife history.Sturgeon areuniquelyadapt- variety of prey and switch as prey availability ed to the large mainstemriver sy ...

Crance^3 , Mosindy1937,Payne 1937,Curtis1990, Taub^4 , Lane1991, Pitmad,Beamesderfer1993, Dryer &Sandoval^6 , USFWS &GSM ...

Table 1.Specificalternatives identified as potentiallybeneficial to theconservation.productivity. o rdiversity of sturgeon or pa ...

name the sturgeon orpaddlefishspecieswithwhich familiar; and (3) providerelatedarticles orreports. Specificalternatives identili ...

(Galbreath1985, Pitman^11 , Graham1996).Small Habitatmodifications tobenefitsturgeonhave fisheries remain for lake Acipenser ful ...

Figure 2. Abundance and productivity of the pristine (1890) and presentimpounded a n dunimpoundedwhitesturgeonstocks in the lowe ...

longer furnishes optimal conditions for different in- tervals of thelife cycle. Insomeareas recruitment is high butrearinghabita ...

in hydroelectricfacilityoperation.Trans.Amer.Fish.Soc. 125: Beamesderfer, R.C. 1993. A standard weight (Ws) equation for whitest ...

Folz, D.J. & L.S. Meyers. 1985. Management of the lake sturgeon, Acipenser fulvescens, population in the Lake Winnebago sys- ...

gram in North America. pp.329–336.In:P. Williot(ed.)Actes du PremierColloqueInternational surl’Esturgeon,Centre National duMachi ...

Environmental Biology of Fishes 48:418–419, 1997. © 1997 KluwerAcademicPublishers.Printed in theNetherlands Threatened fishes of ...

macroinvertebrate faunas, andobstruction ofupstreammigratoryroutes formigratoryspecies. Thelatterconstraintseverelylimits availa ...