Reports

Reports and documents by IAE staff.  

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

Petix, Meaghan I., Erin C. Gray, and Matt A. Bahm   2017

EXECUTIVE SUMMARY This document summarizes monitoring of Astragalus mulfordiae (Mulford’s milkvetch) on land managed by the BLM Vale District. In 2017, we monitored plots testing for effects of herbivory on A. mulfordiae in permanent plots along with transects monitoring long-term population trends and plant community composition. In 2017 we observed an increase in number of […]

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

Giles, Denise E.L., Meaghan I. Petix, and Matt A. Bahm   2017

Executive Summary This report documents monitoring 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 […]

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

Giles, Denise E.L. and Thomas N. Kaye   2017

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 from approximately 10 populations to less than 5. The primary threats to […]

Propagation and reintroduction for Lupinus oreganus in the BLM, Roseburg District

Giles, Denise E.L. and Matt A. Bahm   2017

EXECUTIVE SUMMARY This document reports initial work from seed collection, propagation, and outplanting of Lupinus oreganus for the Roseburg District Bureau of Land Management. Sites managed by the Roseburg BLM represent the southernmost range of this threatened plant species. Three sites were outplanted including Callahan Meadows (approx. 1,900 plants), Loose Laces (approx. 1,075 plants), and […]

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

Giles, Denise E.L. and Matt A. Bahm   2017

EXECUTIVE SUMMARY In 2017, we monitored L. oreganus populations by assessing foliar (leaf) cover (a measure of abundance), raceme count, and fruit production at five different sites in the Roseburg BLM District. Foliar cover and raceme count increased from 2016 values at all sites monitored in 2017. Seed set increased at all sites, except Loose […]

Kincaid’s Lupine (Lupinus oreganus) and Habitat Monitoring at Fir Butte

Petix, Meaghan I. and Matt A. Bahm   2017

EXECUTIVE SUMMARY This report documents work conducted on Kincaid’s lupine (Lupinus oreganus), a threatened species listed by the Oregon Department of Agriculture and the U.S. Fish and Wildlife Service, and the surrounding plant community at Fir Butte. Kincaid’s lupine serves as the primary larval host plant for the endangered Fender’s blue butterfly (Icaricia icarioides fenderi); […]

Threat assessment for Limnanthes pumila ssp. pumila (dwarf woolly meadowfoam) on Table Rocks ACEC

Petix, Meaghan I., Erin C. Gray, and Matt A. Bahm   2017

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) […]

Habitat and population monitoring for Chloropyron maritimum ssp. palustre and Limonium californicum on the Coos Bay North Spit

Denise E.L. Giles, Erin C. Gray, Matt A. Bahm, and Thomas N. Kaye   2017

In 2017 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 ~570,000, an increase from 2016 values.

In 2017 the population of Limonium californicum decreased from those observed in 2016, and is estimated to be ~564,000.

Habitat mapping from 2011-2017 has shown a shift towards more Limonium californicum dominant habitat types, and an increase in the non-native Juncus gerardii in recent years.

Nestucca Bay National Wildlife Refuge, Cannery Hill Prairie Restoration: 2015 Report and Updated Restoration Plan

Silvernail, Ian   2015

Clatsop Plains – Long Beach Peninsula Coastal Prairie Restoration

Bahm, Matt A. and Meaghan I. Petix   2017

EXECUTIVE SUMMARY In 2017, 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 […]