Reports and documents by IAE staff.
Executive Summary This document summarizes long-term monitoring and provides management recommendations for prairie restoration efforts at Fern Ridge Reservoir on lands managed by the US Army Corps of Engineers. Quantitative and/or qualitative monitoring has occurred annually since 2008, dependent upon whether treatment actions have occurred. In 2018, we quantitatively monitored 9 sites: Big Spires, West […]
Pink sand-verbena (Abronia umbellata ssp. breviflora) is listed as endangered by the Oregon Department of Agriculture, and a Species of Concern by the U.S. Fish and Wildlife Service. Since the late 1970’s, the number of natural populations in Oregon has decreased from approximately 10 populations to less than 5, though the current status of populations […]
Controlling exotic grasses while maintaining native plant communities in fire-maintained wet prairiesSchomaker, A.L., M.A. Bahm, and E.C. Gray 2019
The treatments tested in this study show potential for addressing a subset of restoration goals within the Fern Ridge RNA (reducing Anthoxanthum odoratum cover, increasing native species cover, and decreasing exotic species cover). Currently, no individual treatment provides desired results in all of the measured variables but a combination of the strategies tested here may […]
This document summarizes results from two studies involving habitat management techniques for L. cookii to support recovery of the species. The studies include 1) an evaluation of herbicide effects at Illinois Forks State Park, in areas occupied and unoccupied with L. cookii and 2) the effects of prescribed fire on L. cookii and the surrounding […]
During the spring and summer of 2018, we monitored 18 plant species (15 vascular, three non-vascular) listed as special status species (SSS) in the Bureau of Land Management’s (BLM) Lakeview Resource Area. Approximately 2,000 acres were surveyed and 12 of the 18 target species were observed over the survey period stretching from April 11th to June 26th.
Peck’s penstemon (Penstemon peckii) is endemic to Oregon, occurring in only Deschutes and Jefferson counties. It is considered a Sensitive Species by the US Forest Service, and a Species of Concern by the US Fish and Wildlife Service. Most of its known occurrences are on the Deschutes National Forest. Previous research on the germination of […]
This report documents monitoring for the Lupinus oreganus (Kincaid’s lupine) population located at Eagle’s Rest, managed by the Eugene District of the Bureau of Land Management (BLM). Monitoring at this site provides the BLM with information on population status and long-term trends and supply baseline data to help understand and predict the response of the population to habitat changes caused by natural forces, human-induced threats, and prescribed management actions. Monitoring at this site also provides information on the prairie quality and diversity, and the overall abundance of lupine at this site in the Eugene East Recovery Zone.
This report to the Oregon Watershed Enhancement Board summarizes restoration work at three sites to improve wet prairie habitat and an investigation of the use of grazing as a restoration tool to improve habitat for Bradshaw’s lomatium, a federally listed endangered species.
Astragalus mulfordiae: Population dynamics and the effect of cattle grazing in the Vale District, BLMSchomaker, A. Lisa and Matt A. Bahm 2018
EXECUTIVE SUMMARY This document summarizes the monitoring of Astragalus mulfordiae (Mulford’s milkvetch) on land managed by the BLM Vale District. In 2018, we revisited permanent plots testing for the effects of herbivory on A. mulfordiae, along with permanent transects looking at long-term population trends and plant community composition in A. mulfordiae habitat. •In 2018 we […]
EXECUTIVE SUMMARY Upper and Lower Table Rocks, located northeast of Medford, Oregon, are collectively designated as an Area of Critical Environmental Concern (ACEC) by the Bureau of Land Management (BLM). The Table Rocks are characterized primarily by vernal pool and mound habitats that support several rare species. Since 2006, the Institute for Applied Ecology (IAE) […]