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Production of the Crayfish Cambarus Bartonii (Fabricius, 1798) (Decapoda, Cambaridae) in an Acidic Appalachian Stream (U.S.a.)

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The growth rate and annual production of the crayfish Cambarus bartonii were estimated in Crouch Run, a 3rd-order stream that drains a high-elevation catchment in West Virginia and which has been acidified because of acidic precipitation. Production of C. bartonii in Crouch Run was 525.8 mg AFDW m-2 yr-1 and was less than that for C. bartonii in Upper Ball Creek, a high-elevation circumneutral stream in North Carolina (961.0 mg AFDW m-2 yr-1, Huryn & Wallace, 1987). This difference seemed to be related to differences in the biomass of C. bartonii between the streams, because the P/B ratio for C. bartonii in Crouch Run was 7.4 compared with 5.8 in Upper Ball Creek.

Affiliations: 1: National Biological Service, West Virginia Cooperative Fish and Wildlife Research Unit3), P.O. Box 6125, West Virginia University, Morgantown, WV 26506-6125, U.S.A


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