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Vital Rates And Population Demographics In Declining And Stable Watersnake Populations, John H. Roe, Omar Attum, Bruce A. Kingsbury Ph.D.
Vital Rates And Population Demographics In Declining And Stable Watersnake Populations, John H. Roe, Omar Attum, Bruce A. Kingsbury Ph.D.
Bruce A Kingsbury Ph.D.
many snake populations have experienced significant declines, including the copper-bellied Watersnake (nerodia erythrogaster neglecta), a species listed as threatened under the federal endangered species act. here, we assess aspects of population biology and vital rates in n. e. neglecta to help elucidate potential mechanisms of their decline and inform more targeted recovery efforts. We use the common Watersnake (nerodia sipedon sipedon) as a benchmark for comparison. survey results indicate that the n. e. neglecta population may have experienced a 70% decline in abundance from 2001– 2006, whereas the n. s. sipedon population remained relatively stable. annual survivorship rates did not …