Index Catalog // ScholarsArchive@OSU

Effects of Integrating Mowing and Imazapyr Application on African Rue (Peganum harmala) and Native Perennial Grasses

Creator:: Johnson, Dustin D. and Davies, Kirk W.
Abstract:: African rue is a poisonous, perennial forb that readily invades salt-desert shrub and sagebrush-steppe rangelands. Information detailing options for integrated management of African rue is lacking. To date, a few studies have researched the efficacy of different herbicides for controlling African rue, but none have investigated integrated approaches to its...
Resource Type:: Article
Full Text:: Application on African Rue (Peganum harmala) and Native Perennial Grasses Johnson, D. D., & Davies, K. W

Restoration of Exotic Annual Grass-Invaded Rangelands: Importance of Seed Mix Composition

Creator:: Davies, Kirk W., Johnson, Dustin D., and Nafus, Aleta M.
Abstract:: Restoration of exotic annual grass-invaded rangelands is needed to improve ecosystem function and services. Increasing plant species richness is generally believed to increase resistance to invasion and increase desired vegetation. However, the effects of species richness and individual plant life forms in seed mixes used to restore rangelands invaded by...
Resource Type:: Article
Full Text:: Seed Mix Composition Davies, K. W., Johnson, D. D., & Nafus, A. M. (2014). Restoration of exotic

Are Early Summer Wildfires an Opportunity to Revegetate Exotic Annual Grass–Invaded Plant Communities?

Creator:: Davies, Kirk W., Nafus, Aleta M., and Johnson, Dustin D.
Abstract:: Medusahead (Taeniatherum caput-medusae [L.] Nevski) is an exotic annual grass invading western rangelands. Successful revegetation of invaded-plant communities can be prohibitively expensive because it often requires iterative applications of integrated control and revegetation treatments. Prescribed burning has been used to control medusahead and prepare seedbeds for revegetation, but burning has...
Resource Type:: Article
Full Text:: Plant Communities? Kirk W. Davies,1 Aleta M. Nafus,2 and Dustin D. Johnson3 Authors are 1Rangeland

A Randomized Controlled Trial of a Truck Seat Intervention: Part 1-Assessment of Whole Body Vibration Exposures

Creator:: Johnson, Peter W., Zigman, Monica, Ibbotson, Jennifer, Dennerlein, Jack T., and Kim, Jeong Ho
Abstract:: Full-time vehicle and heavy equipment operators often have a high prevalence of musculoskeletal disorders, especially low back pain (LBP). In occupations requiring vehicles or heavy equipment operation, exposure to whole body vibration (WBV) has been consistently associated with LBP. LBP is the most common cause of work-related disability and continues...
Resource Type:: Article
Full Text:: Truck Seat Intervention: Part 1—Assessment of Whole Body Vibration Exposures Peter W Johnson1, Monica

A Randomized Controlled Trial of a Truck Seat Intervention: Part 2-Associations Between Whole-Body Vibration Exposures and Health Outcomes

Creator:: Kim, Jeong Ho, Zigman, Monica, Dennerlein, Jack T., and Johnson, Peter W.
Abstract:: This randomized controlled trial study was conducted to determine whether two different seating interventions would reduce exposure to whole-body vibration (WBV) and improve associated health outcomes. Forty professional truck drivers were randomly assigned to two groups: (i) a control group of 20 drivers who received a new, industry-standard air-suspension seat,...
Resource Type:: Article
Full Text:: Health Outcomes Jeong Ho Kim1,*, Monica Zigman2, Jack T. Dennerlein3,4 and Peter W Johnson2 1School

Distribution and abundance of juvenile demersal fishes in relation to summer hypoxia and other environmental variables in coastal Oregon, USA

Creator:: Sobocinski, Kathryn L., Ciannelli, Lorenzo, Wakefield, W. Waldo, Yergey, Matthew E., and Johnson-Colegrove, Angela
Abstract:: The juvenile demersal fish assemblage along the Pacific Northwest coast has received little attention relative to adult life history stages since pioneering work in the 1970s. Increasing severity of hypoxia along the Oregon coast in recent years has prompted investigations into the response of biota in this region. We used...
Resource Type:: Article

Using post-settlement demography to estimate larval survivorship: a coral reef fish example

Creator:: Johnson, D. W., Christie, M. R., Stallings, C. D., Pusack, T. J., and Hixon, M. A.
Abstract:: Many species have multi-stage life cycles in which the youngest stages (e.g., larvae) are small, dispersive, and abundant, whereas later stages are sessile or sedentary. Quantifying survival throughout such early stages is critical for understanding dispersal, population dynamics, and life history evolution. However, dispersive stages can be very difficult to...
Resource Type:: Article
Full Text:: survivorship: 1 a coral-reef fish example 2 Johnson, D.W.1,2*, Christie, M.R.1,3, Stallings, C.D.1,4

Success of Seeding Native Compared with Introduced Perennial Vegetation for Revegetating Medusahead-Invaded Sagebrush Rangeland

Creator:: Davies, K. W., Boyd, C. S., Johnson, D. D., Nafus, A. M., and Madsen, M. D.
Abstract:: Millions of hectares of Wyoming big sagebrush (Artemisia tridentata Nutt. subsp. wyomingensis Beetle & Young) rangeland have been invaded by medusahead (Taeniatherum caput-medusae [L] Nevski), an exotic annual grass that degrades wildlife habitat, reduces forage production, and decreases biodiversity. Revegetation of medusahead-invaded sagebrush plant communities is necessary to restore ecosystem...
Resource Type:: Article
Full Text:: Introduced Perennial Vegetation for Revegetating Medusahead-Invaded Sagebrush Rangeland Davies, K. W

Can Imazapic and Seeding Be Applied Simultaneously to Rehabilitate Medusahead-Invaded Rangeland? Single vs. Multiple Entry

Creator:: Davies, K. W., Madsen, M. D., Nafus, A. M., Boyd, C. S., and Johnson, D. D.
Abstract:: It has recently been proposed that the cost of rehabilitating medusahead (Taeniatherum caput-medusae [L.] Nevski)-invaded rangelands may be reduced by concurrently seeding desired vegetation and applying the preemergent herbicide imazapic. However, the efficacy of this ‘‘single-entry’’ approach has been inconsistent, and it has not been compared to the multiple-entry approach...
Resource Type:: Article
Full Text:: . Oecologia 167:481–491. DAVIES, K. W., AND D. D. JOHNSON. 2008. Managing medusahead in the Intermountian

Of Grouse and Golden Eggs: Can Ecosystems Be Managed Within a Species-Based Regulatory Framework?

Creator:: Boyd, Chad S., Johnson, Dustin D., Kerby, Jay D., Svejcar, Tony J., and Davies, Kirk W.
Abstract:: Declining greater sage-grouse populations are causing concern for the future of this species across the western United States. Major ecosystem issues, including exotic annual grass invasion and conifer encroachment, threaten vast acreages of sagebrush rangeland and are primary threats to sage-grouse. We discuss types of problems facing sage-grouse habitat and...
Resource Type:: Article
Full Text:: ? Chad S. Boyd,1 Dustin D. Johnson,2 Jay D. Kerby,3 Tony J. Svejcar,4 and Kirk W. Davies1 Authors are

ScholarsArchive@OSU

Effects of Integrating Mowing and Imazapyr Application on African Rue (Peganum harmala) and Native Perennial Grasses

Restoration of Exotic Annual Grass-Invaded Rangelands: Importance of Seed Mix Composition

Are Early Summer Wildfires an Opportunity to Revegetate Exotic Annual Grass–Invaded Plant Communities?

A Randomized Controlled Trial of a Truck Seat Intervention: Part 1-Assessment of Whole Body Vibration Exposures

A Randomized Controlled Trial of a Truck Seat Intervention: Part 2-Associations Between Whole-Body Vibration Exposures and Health Outcomes

Distribution and abundance of juvenile demersal fishes in relation to summer hypoxia and other environmental variables in coastal Oregon, USA

Using post-settlement demography to estimate larval survivorship: a coral reef fish example

Success of Seeding Native Compared with Introduced Perennial Vegetation for Revegetating Medusahead-Invaded Sagebrush Rangeland

Can Imazapic and Seeding Be Applied Simultaneously to Rehabilitate Medusahead-Invaded Rangeland? Single vs. Multiple Entry

Of Grouse and Golden Eggs: Can Ecosystems Be Managed Within a Species-Based Regulatory Framework?

Limit your search

Academic Affiliation

Conference Name

Creator

Contributor

Date

Decade

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search