Index Catalog // ScholarsArchive@OSU

Influence of spatial and temporal factors on plants, pollinators and plant-pollinator interactions in montane meadows of the western Cascades Range

Creator:: Pfeiffer, Vera W.
Abstract:: Montane meadows comprise less than 5% of the landscape of the western Cascades of Oregon, but they provide habitat for diverse species of plants and pollinators. Little is known about plant-pollinator network structure at these sites. This study quantified plant-pollinator interactions over the summer of 2011, based on six observations...
Resource Type:: Masters Thesis
Full Text:: , Pollinators and Plant- pollinator Interactions in Montane Meadows of the Western Cascades Range CHAPTER

Soil arthropods in the Central Cascades : slash burning effects and biology of some species

Creator:: Estrada-Venegas, Edith G
Abstract:: Despite the recognized role of soil arthropod fauna on nutrient cycling and decomposition processes, many aspects of the effects of sylvicultural methods in forest ecosystems upon their biology remain poorly understood. The long term effects of prescribed fires on soil arthropods in forest ecosystems in the Pacific Northwest have never...
Resource Type:: Masters Thesis
Full Text:: California and southern Oregon (Perry, 1994). In the specific case of the eastern side of the Cascade Range

Ecology of aquatic habitats associated with stream margins

Creator:: Moore, Kelly M. S.
Abstract:: The morphology and ecological importance of habitats associated with the margin of third-order stream channels in the Oregon Cascades were studied in streams in three different riparian types: 450-year-old conifers, 40-year-old alder, and an open, herbaceous-dominated clearcut. Margins, backwaters, and side channels in streams create important habitat for fry of...
Resource Type:: Masters Thesis
Full Text:: 46 CHAPTER III: ECOLOGY OF CUTTHROAT TROUT FRY IN CASCADE MOUNTAIN STREAMS 51 INTRODUCTION 51

Predator assemblages in old-growth and logged sections of small Cascade streams

Creator:: Murphy, Michael Louis
Resource Type:: Masters Thesis
Full Text:: -GROWTH AND LOGGED SECTIONS OF SMALL CASCADE STREAMS Abstract approved: Jathes D. Assemblages of stream

Distribution and juvenile ecology of bull trout (Salvelinus confluentus) in the Cascade Mountains

Creator:: Goetz, Frederick Allen
Abstract:: Distribution and juvenile habitat use of bull trout (Salvelinus confluentus) were surveyed in selected areas of the Upper Willamette, Deschutes, upper Yakima, and upper Cedar River basins in Oregon and Washington from 1989 to 1991, using day snorkeling, night snorkeling, and electrofishing. These methods were selected after a preliminary diel...
Resource Type:: Masters Thesis

Nitrogen, phosphorus and particulate matter budgets of five coniferous forest ecosystems in the western Cascades Range, Oregon.

Creator:: Fredriksen, R. L.
Abstract:: Nutrient and particulate matter balances were established for five ecosystems dominated by Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] in the western Cascades, Oregon. Carriers of N and P were particulate matter (dust in precipitation and sediment in streams) and dissolved matter in both precipitation and stream water. The input and outflow...
Resource Type:: Dissertation

The Role of Intraspecific Functional Trait Variation in the Differential Decline of Meadow Species Following Conifer Encroachment

Creator:: Celis, Jessica
Abstract:: In the Oregon Cascade Range, conifer encroachment has reduced the extent of mountain meadows by as much as 50% since the mid-1940s. Although encroachment results in a general decline of meadow species abundance and diversity, species differ in their sensitivities to encroachment: some show rapid declines whereas others persist in...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ F. Andrew Jones In the Oregon Cascade Range, conifer encroachment has reduced the extent

An analysis of montane forest vegetation on the east flank of the central Oregon Cascades

Creator:: West, Neil E.
Abstract:: Montane forest vegetation as it occurs on the east flank of the central Oregon Cascades has provided excellent conditions for a "natural experiment" in the use of various methodologies in studying vegetational distribution. This "experiment" has reflected on some theory and practice for the discipline of plant synecology. Detailed descriptions,...
Resource Type:: Dissertation
Full Text:: Cascade Range is less dissected than the western slope. Pleistocene 11 glaciers and the increased

Physical and chemical characteristics of riparian soils two third order streams in the western Cascades of Oregon

Creator:: Gillham, Marla L.
Abstract:: Study objectives were to survey and compare physical and chemical characteristics of soils within two thirdorder montane riparian ecosystems: a 500-year old Douglas fir (Pseudotsuga menzlesii) forest at Mack Creek, and a mature red alder (Alnus rubra) forest occupying a 35-year old clearcut at Quartz Creek, both near Blue River,...
Resource Type:: Masters Thesis

Denitrification potential in forest riparian soils of the western Oregon Cascades : spatial and temporal variation

Creator:: McClellan, Michael H.
Abstract:: Denitrification, the biological or chemical reduction of ionic nitrogen oxide or dinitrogen, has not been widely studied in forest ecosystems despite widespread interest in other facets of the forest nitrogen economy. This study had three main objectives: to determine whether potential for denitrification exists in forest riparian and hill slope...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Influence of spatial and temporal factors on plants, pollinators and plant-pollinator interactions in montane meadows of the western Cascades Range

Soil arthropods in the Central Cascades : slash burning effects and biology of some species

Ecology of aquatic habitats associated with stream margins

Predator assemblages in old-growth and logged sections of small Cascade streams

Distribution and juvenile ecology of bull trout (Salvelinus confluentus) in the Cascade Mountains

Nitrogen, phosphorus and particulate matter budgets of five coniferous forest ecosystems in the western Cascades Range, Oregon.

The Role of Intraspecific Functional Trait Variation in the Differential Decline of Meadow Species Following Conifer Encroachment

An analysis of montane forest vegetation on the east flank of the central Oregon Cascades

Physical and chemical characteristics of riparian soils two third order streams in the western Cascades of Oregon

Denitrification potential in forest riparian soils of the western Oregon Cascades : spatial and temporal variation

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