Demographic Comparisons between Reservoir-Dwelling and Stream-Dwelling Populations of a Threatened Turtle (Sternotherus depressus Tinkle and Webb)

Academic Article

Abstract

  • Sternotherus depressus (Flattened Musk Turtle) is a federally threatened species endemic to the Black Warrior River drainage in north-central Alabama. Individuals of both stream-dwelling and impoundment-dwelling populations were trapped for comparative demographic analyses. Carapace length was significantly longer for reservoir turtles than for stream turtles. Size-class distributions between the two populations were also significantly different, with reservoir turtle collections biased toward the larger size classes, and presumably older age classes. These results suggest a reduced recruitment in the reservoir population, and raise concerns about long-term population sustainability in impoundment habitats.
  • Digital Object Identifier (doi)

    Author List

  • Melancon SR; Angus RA; Marion KR
  • Start Page

  • 684
  • End Page

  • 691
  • Volume

  • 12
  • Issue

  • 4