Fig. 2. Population growth of red-eared slider for 1980–2000, assuming an annual habitat increase of 3%. The survivorship for red-eared slider is represented by β. Higher values of β indicate poorer conditions for survival. The top “△” line represents a habitat increase of 5% per year for β = –0.05 representing natural movements of sliders. The “o” line represents β = 0.01, meaning that 99% of red-eared sliders survive. The “+” line represents poor conditions for 50% survivorship and the “*” line represents poor conditions for 1% survivorship.
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