Effects of Roads on the Structure of Freshwater Turtle Populations
作者： DAVID A. STEEN , JAMES P. GIBBS
DOI: 10.1111/J.1523-1739.2004.00240.X
关键词: Highly sensitive 、 Painted turtle 、 Biology 、 Abundance (ecology) 、 Wetland 、 Zoology 、 Turtle (robot) 、 Ecology 、 Chelydra
摘要: Road mortality has the potential to alter structure of turtle populations because popula- tions are highly sensitive additive sources adult mortality. To address issue, we captured painted turtles ( Chrysemys picta; n = 174) and snapping Chelydra serpentina; 56) in 18 wetlands surrounded by low road density (≤1.5 km roads/km 2 landscape) 17 high (>1.5 km/km ) central New York 2002. High was associated with male-biased sex ratios (74% vs. 54% males; p 0.01) (95% 74% 0.08), whereas morphology abundance were not density. Disproportionate females on nesting migrations is most likely cause skewed ratios.
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