Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Freshwater Snail Inventory at Upper Delaware Scenic and Recreational River - Field Data Sheets - Dataset As Delivered

Published by National Park Service | Department of the Interior | Metadata Last Checked: January 07, 2026 | Last Modified: 2024-10-31T00:00:00Z
Species Inventory project as-delivered dataset, scanned data sheets from the field as well as a template. The Upper Delaware Scenic and Recreational River (UPDE) unit of the National Park Service partnered with the Academy of Natural Sciences of Drexel University (ANS) to perform a freshwater snail inventory within the park. ANS and UPDE teams conducted field research in July and August of 2022 and 2023 using a combination of kick sampling and hand-picking methods to determine the abundance and diversity of freshwater snail populations. Fifty-four sites were chosen along the ~70 miles of the Delaware River within UPDE and included coldwater and warmwater fisheries zones. In 2022, field collections occurred at 30 sites along the river edge from Hancock, NY to the No. 2 railroad bridge near Mill Rift, PA. In 2023, field work occurred at 24 sites in more disturbed areas like river access points and boat launches, and within habitats that were not sampled in 2022 (i.e., backwater, channels, and islands). Snails were identified using traditional morphological taxonomy and DNA barcoding of the CO1 (Cytochrome c oxidase I) gene. Additional environmental DNA (eDNA) was analyzed from water collected at ten eDNA Atlas Sites. This study identified 27 taxa of snails, one of which is a non-native species, the Japanese Mystery Snail (Cipangopaludina japonica). A better understanding of the snail community and the ecosystem has been gained with the results of this inventory which will inform effective and responsible river management plans.

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov