Reports and documents by IAE staff.  

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Dalles Mountain Prairie Restoration Plan Progress Report 2016

Moore, Peter and Matt Bahm   2016

This report outlines progress towards creating a restoration plan for Dalles Mountain Prairie, part of Columbia Hills State Park, Washington State. Background material and results of the monitoring of baseline vegetation conditions for a grazing study are presented.

Tribal Native Plant Materials Program Development Plan for the Confederated Tribes of Grand Ronde

Currin, Rebecca, Peter Moore and Andy Neill   2016

This development plan describes the background and the steps required for creating a tribal native plant materials program at Confederated Tribes of Grande Ronde.

Population assessment of arrow-leaf thelypody (Thelypodium eucosmum)

Bahm, Matt A.   2016

EXECUTIVE SUMMARY We monitored 21 sites occurring on Prineville BLM lands in 2016, including 2 previously undocumented sites and 9 sites that had been monitored in 2015. Highlights from 2016 were: • Identified 2 previously undocumented populations • Plant counts/estimates revealed 44,024 individuals, and ranged from 12 to 29,249 o In 2015, plant counts/estimates revealed […]

Assessing the status and extent of Lupinus lepidus var. cusickii in Denny Flat, Baker County, Oregon

Petix, Meaghan I., Matt A. Bahm, and Erin C. Gray   2016

EXECUTIVE SUMMARY We conducted a full census of Lupinus lepidus var. cusickii subpopulations in Denny Flat on land managed by the Vale District of the Bureau of Land Management. In 2016, we monitored permanent monitoring transects to examine plant community and L. lepidus var. cusickii population trends. This species can have high annual variability and […]

Population monitoring of grimy mousetail (Ivesia rhypara var. rhypara) and Crosby’s buckwheat (Eriogonum crosbyae)

Petix, Meaghan I. and Matt A. Bahm   2016

EXECUTIVE SUMMARY This document summarizes monitoring of Ivesia rhypara var. rhypara (grimy mousetail) and Eriogonum crosbyae (Crosby’s buckwheat) on land managed by the BLM Lakeview District. In 2016 we revisited 5 special status plant sites in Guano Valley, Lake County, OR: 1 site for I. rhypara var. rhypara and 5 for E. crosbyae . In […]

Clatsop Plains – Long Beach Peninsula Coastal Prairie Restoration

Matt A. Bahm   2016

EXECUTIVE SUMMARY In 2016, treatments varied by site and establishment of seeded species was low across sites. Overall, soil removal treatments showed the most promise across sites. Soil removal plots had lower cover of invasive grasses and forbs and offered more potential management action(s). Future monitoring will help to elucidate treatment effectiveness and aid in […]

Astragalus mulfordiae: Population dynamics and the effect of cattle grazing in the Vale District, BLM

Meaghan I. Petix, Eric C. Gray, and Matt A. Bahm   2016

EXECUTIVE SUMMARY This document summarizes monitoring of Astragalus mulfordiae (Mulford’s milkvetch) on land managed by the BLM Vale District. In 2016, we monitored plots testing for effects of herbivory on A. mulfordiae in permanent plots along with transects looking at long-term population trends and plant community composition. • In 2016 we observed similar densities of […]

Habitat and population monitoring for Chloropyron maritimum spp. palustre and Limonium californicum

Giles, Denise, E.C. Gray, M. A. Bahm and T. N. Kaye   2016


In 2016 the estimated number of Chloropyron maritimum ssp. palustre plants on the Coos Bay North Spit land managed by the Coos Bay District of the Bureau of Land Management is ~370,000 (277,000 in the protected area and 93,000 in the unprotected area). This is the lowest population estimate since monitoring began in 2011.
In 2016 the population of Limonium californicum is estimated to be ~652,000 with 532,000 and 120,000 in the protected and unprotected area, respectively.
Despite the relatively high number of plants, both species experienced decreases in total population size from 2015-2016, and Chloropyron maritimum ssp. palustre showed large decreases in areal cover in the unprotected area.
The area occupied with these rare species is found in a long, narrow strip of appropriate habitat in a dynamic system. This narrow strip of land (~700m long with a maximum width of 50m) lies in a precarious location along the shoreline where minor fluctuations in sea level (due to natural or manmade activities), could cause significant loss of habitat. More immediate effects from ORV use are also evident.

Lupinus oreganus in the BLM Roseburg District: population monitoring and restoration

Giles, Denise E.L, Andrew T. Esterson, and Matt A. Bahm   2016

Executive Summary This document reports preliminary findings and summarizes methods used in monitoring the threatened species Lupinus oreganus in the BLM Roseburg District.  In 2016, we monitored L. oreganus populations by assessing foliar (leaf) cover (a measure of abundance), raceme count, and fruit production at six different sites in the Roseburg District. Seed set and […]

Threat assessment for Limnanthes pumila ssp. pumila on Table Rocks ACEC

Erin C. Gray and Matt A. Bahm   2016

  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, including Limnanthes pumila ssp. pumila (née Limnanthes floccosa ssp. […]

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

Giles, Denise E.L., and Tom N. Kaye   2016

EXECUTIVE SUMMARY 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 by approxiamately 50% (~10 to ~5). The primary threats to the species […]

Population assessment of Pyrrocoma radiata (Snake River goldenweed)

Petix, Meaghan I., Matt A. Bahm, and Sarah K. Uebel   2016

The Institute for Applied Ecology monitored populations of Pyrrocoma radiata (Snake River goldenweed) on land managed by the BLM Vale District in 2015 and 2016. • We monitored 26 sites occurring on Vale BLM lands in 2015, including 1 previously undocumented site. o Identified 1 previously undocumented population. o Counted/estimated 16,368 plants, with sites ranging […]

Population and habitat monitoring for Kincaid’s lupine and Hitchcock’s blue-eyed grass at Oak Basin

Giles, Denise, Andrew Esterson, and Matt Bahm   2016

This report documents research conducted on population characteristics and habitat of Kincaid’s lupine (Lupinus oreganus), a threatened species, and Hitchcock’s blue-eyed grass (Sisyrinchium hitchcockii), a federal species of concern, at Oak Basin. Kincaid’s lupine serves as the primary larval host plant for the endangered Fender’s blue butterfly (Icaricia icarioides fenderi). Both species are endemic to […]

Assessing Management Techniques for Lomatium Cookii (Cook’s desert-parsley)

Giles, Denise E.L., Matt A. Bahm, and Meaghan Petix   2016

EXECUTIVE SUMMARY 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, and 2) the effects of prescribed fire on L. cookii and the surrounding plant community at French Flat Middle […]

Lomatium cookii population monitoring in the Illinois Valley, Josephine County, Oregon

Pfingsten, I.A., Denise E.L. Giles, and Thomas N. Kaye   2016

EXECUTIVE SUMMARY Lomatium cookii is endemic to southwestern Oregon, and is listed as endangered by the State of Oregon and by the U.S. Fish and Wildlife Service (USFWS).  Populations discussed in this report are located in the Illinois Valley in Josephine County.  Long-term monitoring has occurred at French Flat since 1990, at Rough and Ready […]