Demographics and density estimates of two three-toed box turtle (Terrapene carolina triunguis) populations within forest and restored prairie sites in central Missouri

摘要: Box turtles (Terrapene carolina) are widely distributed but vulnerable to population decline across their range. Using distance sampling, morphometric data, and an index of carapace damage, we surveyed three-toed box carolina triunguis) at 2 sites in central Missouri, compared differences detection probabilities when transects were walked by one or two observers. Our estimated turtle densities within forested cover was less the Thomas S. Baskett Wildlife Research Education Center, a site dominated eastern hardwood forest (d = 1.85 turtles/ha, 95% CI [1.13, 3.03]) than Prairie Fork Conservation Area, containing mix open field 4.14 [1.99, 8.62]). Turtles significantly older larger Fork. Damage did not differ between populations despite more prevalent habitat management including mowing prescribed fire We achieved improved estimates density using rather observer Fork, negligible methods Baskett. Error associated with probability decreased both addition second observer. provide demographic data on that suggest use range conditions turtles. This case study suggests practices impacts composition may be cause observed our focal