Index Catalog // ScholarsArchive@OSU

Habitat Selection by Greater Sage-Grouse During Winter in Southeastern Oregon

Creator:: Hagen, Christian A., Willis, Mitchell J., Glenn, Elizabeth M., and Anthony, Robert G.
Abstract:: The distribution and geographic range of Greater Sage-Grouse (Centrocercus urophasianus) have been reduced by 56% since European settlement. Although loss and fragmentation of sagebrush (Artemisia spp.) habitats have been cited as the primary causes for the decline of the species, degradation of existing habitat also has been considered an important...
Resource Type:: Article
Full Text:: b ig s ag eb ru sh X X X D ee p, w el l- dr ai ne d so ils d om in at ed b y A

An evaluation of the effectiveness of instream structures for steelhead trout rearing habitat in the Steamboat Creek basin.

Creator:: Fontaine, Barbara L.
Abstract:: Several types of instream structures were evaluated for their potential to provide rearing habitat and to increase reach carrying capacity for steelhead trout (Salmo gairdneri). Evaluation was conducted in each season over the course of 1 year. Blast pools created in bedrock glides increased the carrying capacity of stream reaches...
Resource Type:: Masters Thesis
Full Text:: swiriining up through a corridor. Only those fish Reach 8 Boulder cluster Reach 6 d,o Boulder-log L . 47

Population and behavioral responses of small mammals to silviculture and downed wood treatments in the Oregon Coast Range

Creator:: Waldien, David L.
Abstract:: Forest managers are challenged to provide timber revenues and other resources for society while protecting and enhancing components of biodiversity that are often associated with older forests or older forest structure, such as dead wood. We examined small mammal response to timber harvest in stands 8-10 years following group-selection, two-story,...
Resource Type:: Dissertation
Full Text:: Fraser University, Vancouver, Canada. 105 pp. Cazares, E., D. L. Luoma, M. P. Amaranthus, C. L. Chambers

Structure, abundance, and distribution of pelagic zooplankton in a deep, oligotrophic Caldera Lake

Creator:: Karnaugh, Elena N.
Abstract:: From July 1985 to April 1987 the pelagic zooplankton community of Crater Lake, Oregon was studied to determine taxonomic structure, absolute and relative densities, and spatial and temporal distributional patterns. Samples were collected using vertically-towed zooplankton nets. The community structure consisted of two cladoceran and nine rotifer species, which were...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy Gary L. Larson From July 1985 to April 1987 the pelagic zooplankton community of

Response of avian communities to herbicide-induced vegetation changes, western Oregon

Creator:: Morrison, Michael L.
Abstract:: The relationships between avian community structure and herbicide modification of vegetation were analyzed on early-growth clearcuts in western Oregon that had received phenoxy herbicide treatment 1 or 4 years previously. Only minor effects of herbicide treatment were evident 1-year after spraying, except for red adler (Alnus rubra), which still exhibited...
Resource Type:: Dissertation
Full Text:: Reserach Center, is appreciated. K. Linguist, D. Burton, and D. Chrostek assisted with field-work, and L

A genetic study of the red-band trout (Salmo sp.)

Creator:: Wilmot, Richard L.
Abstract:: A group of trout that reside in streams of the desiccating lake basins of southeastern Oregon differ markedly from other known Salmo. Known commonly as the red-band trout, this fish was subjected to chromosome analysis for comparison with other species of western North American Salmo. The karyotype of the red-banded...
Resource Type:: Dissertation
Full Text:: . Dornfeld and D. C. England. I am especially grateful to Dr. J. D. McIntyre for his coopera- tion and help

Factors affecting colony size, reproductive success, and foraging patterns of double-crested cormorants nesting on East Sand Island in the Columbia River Estuary

Creator:: Anderson, Cynthia D.
Abstract:: The purpose of this study was to investigate the primary factors affecting colony size, reproductive success, and foraging patterns of Double-crested Cormorants (Phalacrocorax auritus albociliatus) nesting at East Sand Island in the Columbia River estuary, the largest colony of this species on the Pacific Coast of North America. This colony...
Resource Type:: Masters Thesis
Full Text:: colony of Glaucous-winged/Western Gulls (Larus glaucescens X L. occidentalis) (Ca. 6,000 pairs; D. Roby

Growth and reproductions of Oreochromis niloticus (L.) in tropical aquatic microcosms at fluctuating temperature regimes

Creator:: Rwangano, Félicien
Resource Type:: Dissertation
Full Text:: . Blankenship, and L. A. Nielsen. 1996. Tagging and marking. In Murphy, B. R., and D. W. Willis (Editors

Polymorphic segregation in arctic charr Salvelinus alpinus (L.) from Lake Vatnshlidarvatn, northern Iceland

Creator:: Jonsson, Bjarni
Abstract:: I studied the occurrence of two sympatric morphs of arctic charr, Salvelinus alpinus (L.) in Vatnshlidarvatn, a small shallow lake in NW Iceland. The arctic charr were subjectively distinguished by colour and appearance as brown morph or silver morph, and measured for morphological and life history characters. The study revealed...
Resource Type:: Masters Thesis
Full Text:: Polymorphic segregation in arctic charr Salvelinus alpinus (L

Metabolism of periphyton communities in two small streams

Creator:: Lane, Charles Bertell
Abstract:: A technique for estimating gross primary production and respiration of periphyton communities, in situ, in small turbulent streams was developed using a photosynthesis-respiration chamber in a modified "light and dark bottle" method. Trays containing portions of the substrate bearing the benthic community were embedded in the stream, level with the...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Habitat Selection by Greater Sage-Grouse During Winter in Southeastern Oregon

An evaluation of the effectiveness of instream structures for steelhead trout rearing habitat in the Steamboat Creek basin.

Population and behavioral responses of small mammals to silviculture and downed wood treatments in the Oregon Coast Range

Structure, abundance, and distribution of pelagic zooplankton in a deep, oligotrophic Caldera Lake

Response of avian communities to herbicide-induced vegetation changes, western Oregon

A genetic study of the red-band trout (Salmo sp.)

Factors affecting colony size, reproductive success, and foraging patterns of double-crested cormorants nesting on East Sand Island in the Columbia River Estuary

Growth and reproductions of Oreochromis niloticus (L.) in tropical aquatic microcosms at fluctuating temperature regimes

Polymorphic segregation in arctic charr Salvelinus alpinus (L.) from Lake Vatnshlidarvatn, northern Iceland

Metabolism of periphyton communities in two small streams

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