Reports and documents by IAE staff.  

Nelson’s checkermallow recovery project: Phase II

Melanie Gisler and Corinne Duncan   2011

In the spring of 2008, the Institute for Applied Ecology received grants from the United States Fish and Wildlife Service (USFWS) and the Oregon Watershed Enhancement Board (OWEB) to work toward the recovery of Nelson’s checkermallow in two of the largest recovery zones, Corvallis West and Salem West. Recovery zones are designated by the Recovery […]

Astragalus tyghensis: Actual vs. predicted population sizes

Andrea S. Thorpe and Thomas N. Kaye   2008

A 1990 study (Kaye et al., 1990) documented the abundance of Astragalus tyghensis on public and private lands in Oregon. Long-term monitoring for Astragalus tyghensis (Tygh Valley milkvetch) was conducted annually between 1991 and 2000. This work lead to descriptions of the species’ life-history, its long-term trends at five sites, and the development of computer models of population […]

Propagation and population re-establishment for tall bugbane (Cimicifuga elata) on the Salem District, BLM

Thomas N. Kaye   2001

Background: Tall bugbane is a Bureau of Land Management Special Status species that occurs in forest habitats west of the Cascade Range in British Columbia, Washington, and Oregon. To maintain the viability of this species, an interagency Conservation Strategy (Wogen et al., 1996) calls for monitoring throughout the plant’s range on USFS, BLM, and ACOE […]

Lepidium papilliferum (Slickspot peppergrass): Evaluation of Trends (1998-2004) and Analysis of 2004 Habitat Integrity and Population Monitoring Data

Carolyn A. Menke and Thomas N. Kaye   2006

Lepidium papilliferum (slickspot peppergrass) is a plant species of high conservation concern in southwestern Idaho. The species is specialized to occupy “slick spots,” distinct small habitat patches with a clay subsurface soil horizon within the sagebrush steppe. In 1997, the Idaho Conservation Data Center, in collaboration with federal and state agencies, developed a Habitat Integrity […]

Population monitoring and viability analysis for Horkelia congesta ssp. congesta at the Long Tom Area of Critical Environmental Concern

Thomas N. Kaye and Cara Benfield   2004

Monitoring for Horkelia on land managed by BLM was initiated in 1993 at the Long Tom Area of Critical Environmental Concern (ACEC). Since that time, monitoring was conducted annually from 1993 through 1999 by BLM or ODA and from 2002 through 2004 by Institute for Applied Ecology (IAE) staff. The objective of this report is […]

Conservation Strategy for Pink Sand-verbena (Abronia umbellata ssp. breviflora)

Kaye, Thomas N.   2006

Pink sand-verbena (Abronia umbellata ssp. breviflora) is a northwestern United States regional endemic of shoreline habitat along the Pacific Coast of North America, from British Columbia to California. It is a Species of Concern with the USFWS and listed as endangered by the State of Oregon. The species is also considered endangered in Washington (Washington […]

Abronia umbellata var. breviflora on the Oregon coast: Reintroduction and population monitoring

Denise E.L. Giles-Johnson and Thomas N. Kaye   2012

Pink sand-verbena (Abronia umbellata var. breviflora) is listed by the Oregon Department of Agriculture as endangered, 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 dwindled from around ten down to about five. The primary threats to the species include […]

Effects of prescribed fire for fuel reduction on Solanum parishii (Parish’s horse-nettle)

Erin C. Gray and Thomas N. Kaye   2012

This project evaluated the effects of fire and fire intensity on Solanum parishii (Parish’s horse-nettle) through comparisons of replicated burned and unburned plots at two sites in southern Oregon. This report also provides guidance for fuel reduction planning. Previous studies have shown that this species is among a group of plants that may benefit from wildfires (Copeland 2005), but […]

From flowering to dispersal: Reproductive ecology of an endemic plant, Astragalus australis var. olympicus (Fabaceae)

Thomas N. Kaye   1999

Astragalus australis var. olympicus is an endemic plant of the Olympic Mountains, Washington. It is considered a Species of Concern by the U.S. Fish and Wildlife Service. This study focused on the reproductive biology of the plant from flower production through seed germination to identify possible weak points that might contribute to its rarity and […]

Conservation research in the Leslie Gulch ACEC Population monitoring for Trifolium owyheense and seed bank dynamics in Senecio ertterae

Steven Gisler and Thomas N. Kaye   2004

The objective of the current project is to provide Vale District BLM with information needed to make biologically informed management decisions for the Leslie Gulch ACEC and its sensitive botanical resources. Specifically, this two-part project is designed to 1) develop and implement a long-term population monitoring plan for Trifolium owyheense, and 2) perform seed bank […]