Document Changes in the Distribution and Abundance of Hydrilla (Hydrilla verticillata) and Develop Management Options and recommendations for Management of this Invasive Aquatic Plant
Tackett M. Document Changes in the Distribution and Abundance of Hydrilla (Hydrilla verticillata) and Develop Management Options and recommendations for Management of this Invasive Aquatic Plant. 2018-2026. National Park Service
This project is a compilation of products received as part of a Natural Resource Condition Assessment study. This project addresses the spread and ecological impact of the invasive aquatic plant Hydrilla verticillata in the Obed Wild and Scenic River (OBRI) and its tributaries. The primary goal was to document changes in hydrilla distribution and abundance over an eight-year period, compare spatial data from multiple surveys, and assess relationships between hydrilla and sensitive aquatic species, including federally listed mussels and fish. Field surveys in Clear Creek found no hydrilla infestations except at its mouth, confirming its current uninfested status. The project inventoried native aquatic plant beds, mapped occurrences of rare species such as Tennessee Pondweed and Delta Arrowhead, and documented rare animal species including Spotfin Chub and Hellbender. Baseline data were established to enable future assessments of hydrilla’s impact on native flora and fauna. Findings indicate that hydrilla poses a significant threat to aquatic biodiversity, with potential for direct competition and loss of rare plant and animal populations if invasion occurs.
- Type
- Project
- Authors
- Tackett, Marie
- Publisher
- National Park Service
- Units
- OBRI
- Keywords
- aquatic plants, Daddy's Creek, Emory River, exotic plants, hydrilla, Hydrilla verticillata, invasive species, Obed River
Products
- Baseline Aquatic Plant Survey & Mapping of Clear Creek, Obed Wild and Scenic River, Morgan County, Tennessee
- Obed River and Clear Creek Hydrilla Data