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Filtering by: Creator O'Dell, Marti Committee Member Doescher, Paul

An evaluation of biological control of Linaria dalmatica with Mecinus janthinus in Oregon

Creator:

Park, Alexander

Abstract:

Dalmatian toadflax (Linaria dalmatica) has become a prolific invasive plant of rangelands in Oregon since its arrival in the early 20th century. In 2001, the Oregon Department of Agriculture initiated a release program promoting the distribution of the stem-boring weevil, Mecinus janthinus as classical biological control agent to reduce densities...

Resource Type:

Masters Thesis

Full Text:

Page 4.5.a Land use types……………………………………………………………………………………………….39 4.5.b Estimated average density
Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Creator:

Hebel, Cassie L.

Abstract:

Fire suppression in the last several decades has resulted in unprecedented accumulations of organic matter on the landscape, leading to an increase in large, intense wildfires. This study investigated the soil microbial community (using phospholipid fatty acid analysis) across recently burned forests on the eastern slope of the Cascade Range...

Resource Type:

Masters Thesis
Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

Creator:

Schantz, Merilynn C.

Abstract:

Biological plant invasions are diminishing the ecological integrity and function of ecosystems worldwide. A primary example of this is in the Great Basin of the United States, where invasive annual grasses, like cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae L. Nevski), are dominating many sagebrush-steppe ecosystems. In these invaded...

Resource Type:

Dissertation

Full Text:

germination. American Journal of Botany 97:694-699. Purschke, O., M. T. Sykes, T. Reitalu, P. Poschlod