Sponsor
Report to the Great Basin Institute for Supplemental Project Agreement (24-SA-11061500-088) under Master Stewardship Agreement (24-SA-11062754-087)
Document Type
Report
Publication Date
8-2025
Abstract
Seven lakes and ponds within the Umpqua National Forest were surveyed for aquatic invasive weeds during the summer of 2025. These survey results support the US Forest Service and collaborators’ preparations for an upcoming National Environmental Protection Act (NEPA) effort to provide coverage for management actions. Center for Lakes and Reservoirs previously surveyed selections of these waterbodies in 2011 and 2009. For this survey, staff sampled 44-105 points per waterbody, and recorded species frequency, species proportion, and water depth. Surveyed waterbodies predominantly featured diverse native plant communities with 12 to 25 aquatic and emergent species. However, the invasive yellow floatingheart (Nymphoides peltata) was abundant at Beaver Pond within the Steamboat Creek watershed. Yellow floatingheart has been classified by the Oregon Department of Agriculture as a Class A noxious weed and can alter hydrology, exclude native species, and clog water deliverance systems. Reed canarygrass (Phalaris arundinacea) was detected at two waterbodies; it is not a listed weed but is an invasive species that causes environmental harm. It is recommended for USFS staff and collaborators to emphasize periodic early detection of aquatic invasive species and stay up to date on the best practices for yellow floatingheart management.
Rights
Distributed under the terms and conditions of the Creative Commons Attribution (CC BY SA) license: https://creativecommons.org/licenses/by-sa/4. CC BY-SA 4.0
Citation Details
J. Rose and Campbell G.. 2025. Survey of Aquatic Invasive Plants in Selected Umpqua National Forest Lakes and Ponds. Technical Report Submitted to the US Forest Service and Great Basin Institute.