The New York Natural Heritage Program

2010 Projects

Distribution and Status of the Odonates of New York

Citation: White, E.L., J.D. Corser, M.D. Schlesinger. 2010. Distribution and Status of the Odonates of New York. New York Natural Heritage Program, Albany, New York.

The New York Dragonfly and Damselfly Survey (NYDDS) began in 2005, spanned five field seasons through 2009, and relied heavily on citizen scientists to help collect data over a large geographic area. Its primary goal was to document the current distribution of all odonate species in New York State. Survey efforts were directed toward under-surveyed regions, areas with potential high diversity, and locations with potential for harboring Species of Greatest Conservation Need (SGCN).

Our five-year sampling effort yielded many important finds. Most notable were five species added to the list of known odonates for the state, bringing the cumulative total to 194 species, one of the highest diversities of any U.S. state. Participants visited over 2,170 survey sites statewide and a total of 4,383 surveys were conducted, including repeat visits. We confirmed over 18,000 individual species records based on our verification protocol. NYDDS yielded 1,111 new county records beyond these preexisting data. Each county’s documented richness increased by 18 species on average, and we documented at least 75 species in two-thirds of New Yorks’ 62 counties. A list was compiled for each county as well as a distributional map and phenology chart for all 194 species and full species accounts are included for all 48 SGCN.

For more information, presentations, documents, and other downloads, please go here.

Distribution maps for amphibians and reptiles at the edge of their range in New York State

Citation: Swift, L., J. T. Howard, 2010. Distribution maps for amphibians and reptiles at the edge of their range in New York State. New York Natural Heritage Program. Albany NY. 47 pages.

In this report we identify the herpetofauna (amphibians and reptiles) at the edge of their range in NYS. Of the 74 herpetofauna known to occur in New York, 28 are at the edge of their range in the state with an additional 7 having a limited but variable distribution. Continental range maps, where available, confirm this finding. Of the 35 edge-of-range species identified, two had a northern distribution pattern (pages 7-9), nine were southern (pages 10-19), 12 were southeastern (20-32), five were western (pages 33-38), and seven were considered variable (pages 39-46). The NYS Herpetological Database (approximately 90,000 records) provides observation records and allows us to present the statewide distributions in a way that provides perspective on movements of range edges that may have already occurred.

For more information about this project please go here.