Matt Bahm

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Supervisors: Thomas G. Barnes and Kent C. Jensen
Phone: (541) 753-3099
Address: Institute for Applied Ecology
Conservation Research Program
P.O. Box 2855
Corvallis, Oregon 97339

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Evan Frost

Benjamin VanderWeide

Kansas State University

Eugene Schupp

Utah State University

Stanley Kitchen

Damian A Vraniak, PhD

Vanderbilt University

Kyle Joly

National Park Service

Anne Bartuszevige

Helen Enander

Michigan State University

Dennis Odion

Randi Jandt

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Papers by Matt Bahm

Evaluation of population trends and potential threats to a rare serpentine endemic, Calochortus coxii (Crinite mariposa lily)

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Population assessment of arrow-leaf thelypody (Thelypodium eucosmum)

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

This report is the result of a collaboration between the Institute for Applied Ecology (IAE) and ... more This report is the result of a collaboration between the Institute for Applied Ecology (IAE) and the Bureau of Land Management. IAE is a non-profit organization whose mission is conservation of native ecosystems through restoration, research and education. IAE provides services to public and private agencies and individuals through development and communication of information on ecosystems, species, and effective management strategies. Restoration of habitats, with a concentration on rare and invasive species, is a primary focus. IAE conducts its work through partnerships with a diverse group of agencies, organizations and the private sector. IAE aims to link its community with native habitats through education and outreach.

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

Lupinus lepidus var. cusickii surveys, 2016

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Elevation, population size, and time since observation predict extinction in a rare orchid (Cypripedium fasciculatum)

The report the result of a cooperative project between the Institute for Applied Ecology (IAE) an... more The report the result of a cooperative project between the Institute for Applied Ecology (IAE) and the Bureau of Land Management. IAE is a non-profit organization whose mission is conservation of native ecosystems through restoration, research and education. IAE provides services to public and private agencies and individuals through development and communication of information on ecosystems, species, and effective management strategies. Restoration of habitats, with a concentration on rare and invasive species, is a primary focus. IAE conducts its work through partnerships with a diverse group of agencies, organizations and the private sector. IAE aims to link its community with native habitats through education and outreach.

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Population assessment of Pyrrocoma radiata (Snake River goldenweed)

Population assessment of Pyrrocoma radiata (Snake River goldenweed) ii PREFACE This report is the... more Population assessment of Pyrrocoma radiata (Snake River goldenweed) ii PREFACE This report is the result of an agreement between the Institute for Applied Ecology (IAE) and a federal agency. IAE is a non-profit organization whose mission is conservation of native ecosystems through restoration, research and education. Our aim is to provide a service to public and private agencies and individuals by developing and communicating information on ecosystems, species, and effective management strategies and by conducting research, monitoring, and experiments. IAE offers educational opportunities through 3-4 month internships. Our current activities are concentrated on rare and endangered plants and invasive species.

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

Population monitoring of grimy mousetail (Ivesia rhypara var. rhypara) and Crosby's buckwheat (Er... more Population monitoring of grimy mousetail (Ivesia rhypara var. rhypara) and Crosby's buckwheat (Eriogonum crosbyae) Ivesia rhypara var. rhypara and Eriogonum crosbyae monitoring ii PREFACE This report is the result of an agreement between the Institute for Applied Ecology (IAE) and the Bureau of Land Management (BLM). IAE is a non-profit organization dedicated to natural resource conservation, research, and education. Our aim is to provide a service to public and private agencies and individuals by developing and communicating information on ecosystems, species, and effective management strategies and by conducting research, monitoring, and experiments. IAE offers educational opportunities through 3-4 month internships. Our current activities are concentrated on rare and endangered plants and invasive species.

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Clatsop Plains – Long Beach Peninsula Coastal Prairie Restoration

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

This coordinated by the Institute for Applied Ecology (IAE) and is funded by the Bureau of Land M... more This coordinated by the Institute for Applied Ecology (IAE) and is funded by the Bureau of Land Management. IAE is a non-profit organization whose mission is conservation of native ecosystems through restoration, research and education. IAE provides services to public and private agencies and individuals through development and communication of information on ecosystems, species, and effective management strategies. Restoration of habitats, with a concentration on rare and invasive species, is a primary focus. IAE conducts its work through partnerships with a diverse group of agencies, organizations and the private sector. IAE aims to link its community with native habitats through education and outreach.

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

This report is the result of an agreement between the Institute for Applied Ecology (IAE) and a f... more This report is the result of an agreement between the Institute for Applied Ecology (IAE) and a federal agency. IAE is a non-profit organization whose mission is conservation of native ecosystems through restoration, research and education. Our aim is to provide a service to public and private agencies and individuals by developing and communicating information on ecosystems, species, and effective management strategies and by conducting research, monitoring, and experiments. IAE offers educational opportunities through 3-4 month internships. Our current activities are concentrated on rare and endangered plants and invasive species.

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

Lupinus oreganus population monitoring BLM Roseburg 2016 ii PREFACE This report is the result of ... more Lupinus oreganus population monitoring BLM Roseburg 2016 ii PREFACE This report is the result of a cooperative agreement between the Institute for Applied Ecology (IAE) and a federal agency. IAE is a non-profit organization dedicated to natural resource conservation, research, and education. Our aim is to provide a service to public and private agencies and individuals by developing and communicating information on ecosystems, species, and effective management strategies and by conducting research, monitoring, and experiments.

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

by Matt Bahm and Matt Bahm

Response of native forb species to pre-emergent imazapic treatment

Grassland restoration involves attempting to restore and/or re-create biologically diverse native... more Grassland restoration involves attempting to restore and/or re-create biologically diverse native plant communities. Herbicides are an important tool for removing competition from exotic species. Subsequent plantings are often necessary to increase native plant diversity, increasing management inputs and costs. Imazapic herbicide is widely used in grassland restoration projects. In spring 2006, we initiated a study testing response of 22 native forbs to 2 and 4-oz/ac pre-emergent treatments of imazapic. Sites were established in KY and IN to provide broad applicability of results. Seedling establishment and weed cover were monitored at 30 60, 180 days and 15 months after treatment. Information will provide managers a more encompassing list of species to include in initial plantings, increasing diversity and reducing costs of restoration projects.

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Vegetative Characteristics and Grassland Passerine Use of Conservation Plantings in Eastern South Dakota

Vegetative characteristics and grassland passerine use of conservation plantings were studied in ... more Vegetative characteristics and grassland passerine use of conservation plantings were studied in eastern South Dakota Game Production Areas, June 2007-2008. Fourteen fields, from 1 to 8 years old at the onset of the study, were surveyed in each year to describe vegetative characteristics and to correlate grassland pas-serine use. Sites had been planted to a mixture of 5 native warm-season grasses, 3 cool-season grasses, and alfalfa. Grassland passerines were sampled along fixed width transects during June 2007-2008. Vegetation was sampled at 7 points along each of 3 parallel transects within the bird sampling transects. Younger plantings had lower height and percent canopy cover of dead vegetation, greater litter depth, higher coverage of alfalfa and unplanted forbs, and more bare ground than older plantings. Nonmetric multi-dimensional scaling based upon vegetative characteristics showed that sites tended to become more similar with age. A total of fifteen bird species were identif...

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Herbicide and Fire Effects on Smooth Brome (Bromus inermis) and Kentucky Bluegrass (Poa pratensis) in Invaded Prairie Remnants

Invasive Plant Science and Management, 2011

Smooth brome and Kentucky bluegrass are introduced cool-season perennial grasses known to invade ... more Smooth brome and Kentucky bluegrass are introduced cool-season perennial grasses known to invade grasslands throughout North America. During the fall of 2005 and spring of 2006, we implemented a restoration study at six native prairie sites in eastern South Dakota that have been invaded by smooth brome and Kentucky bluegrass. Treatments included five herbicide combinations, a fall prescribed burn, and an untreated control to determine the potential of each for renovation of invaded native grasslands. Herbicide treatments tested were sulfosulfuron, imazapyr, imazapic + sulfosulfuron, and imazapyr + imazapic, and were applied in late September 2005 and mid-May 2006. Untreated control plots averaged 64% (6 3.1) smooth brome cover and 38% (6 5.5) Kentucky bluegrass cover after the third growing season. Smooth brome cover in herbicide treated plots ranged from 6 to 23% and Kentucky bluegrass cover ranged from 15 to 35% after the third growing season. Smooth brome cover was 20% (6 2.9) and Kentucky bluegrass cover was 19% (6 4.0) in burned plots after the third growing season. Spring and fall treatments had similar native plant cover after three growing seasons. Spring and fall application of 0.33 kg ai ha 21 imazapyr and 0.10 kg ai ha 21 imazapic + 0.16 kg ai ha 21 imazapyr had # 10% smooth brome cover and increased native species cover after three growing seasons. Herbicides were effective at reducing cover of smooth brome and Kentucky bluegrass, and can be incorporated with other management strategies to restore prairie remnants. Nomenclature: imazapic, (6)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-methyl-3pyridinecarboxylic acid; imazapyr, (6)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3pyridinecarboxylic acid; sulfosulfuron, (6)-1-(4,6-dimethoxypyrimidin-2-yl)-3-[(2-ethanesulfonyl-imidazo[1,2a]pyridine-3-yl)sulfonylurea; Kentucky bluegrass, Poa pratensis L. POAPR. smooth brome, Bromus inermis Leyss. BROIN;

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Controlling exotic grasses while maintaining native plant communities in fire- maintained wet prairies

ii PREFACE This report is the result of an agreement between the Institute for Applied Ecology (I... more ii PREFACE This report is the result of an agreement between the Institute for Applied Ecology (IAE) and a federal agency. IAE is a non-profit organization whose mission is conservation of native ecosystems through restoration, research and education. Our aim is to provide a service to public and private agencies and individuals by developing and communicating information on ecosystems, species, and effective management strategies and by conducting research, monitoring, and experiments. IAE offers educational opportunities through 3-4 month internships. Our current activities are concentrated on rare and endangered plants and invasive species.

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Native Grass Establishment Using Journey (R) Herbicide

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Development of propagation protocols for Bartonberry (Rubus bartonianus)

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Evaluation of herbicides for control of reed canarygrass (Phalaris arundinacea)

Reed canarygrass (Phalaris arundinacea L.) is an invasive species that forms dense, monotypic sta... more Reed canarygrass (Phalaris arundinacea L.) is an invasive species that forms dense, monotypic
stands in wetlands, moist meadows, and riparian areas. We implemented a reed canarygrass removal
study at five sites in eastern South Dakota using imazapyr, imazapic, and glyphosate individually and in
combination. Eight treatments (five in fall, two in spring, and a control) were applied at each location
in fall 2005–spring 2006. Herbicides were applied over clipped vegetation that had residual vegetation
removed. Reed canarygrass cover was 93% in untreated plots, and ranged from 21%–66% in herbicide
treated plots at the conclusion of the study. Herbicide treatments containing imazapyr provided control
for two growing seasons.

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Invasive Plants and Wildlife Habitat The Impact of 3 Exotic, Invasive Grasses in the Southeastern United States on WildlifePRIMARY EXOTIC GRASS SPECIES

Little is known about the impacts and effects of exotic, invasive grasses on wildlife in the Sout... more Little is known about the impacts and effects of exotic, invasive grasses on wildlife in the Southeast United States. We selected 3 species of exotic grasses common to the Southeast and review the literature on their regional distribution, ecosystem impacts, wildlife impacts, and management. These grasses have the potential to harm indigenous wildlife species, such as northern bobwhite (Colinus virginianus), that need grasslands with a shrub component for nesting, brood-rearing, and loafing. These exotic, invasive grasses are sod-forming in nature, typically forming dense monotypic stands that provide little bare ground and have low plant species and insect diversity. Furthermore, it appears that wildlife do not prefer to consume these plant species. Control is often difficult and usually requires the use of herbicides in combination with mechanical treatment, such as disking, to provide adequate habitat. Attempts should be encouraged to convert these idle grasslands to a mixture of native grasses and forbs to make stands more suitable for wildlife species. We provide suggestions for future research and management needs regarding exotic, invasive grasses and wildlife in the Southeast United States. Ó

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Evaluation of population trends and potential threats to a rare serpentine endemic, Calochortus coxii (Crinite mariposa lily)

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Population assessment of arrow-leaf thelypody (Thelypodium eucosmum)

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

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

Lupinus lepidus var. cusickii surveys, 2016

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Elevation, population size, and time since observation predict extinction in a rare orchid (Cypripedium fasciculatum)

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