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Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Creator:: Villeneuve, Daniel L., Curtis, Lawrence R., Jenkins, Jeffrey J., Warner, Kara E., Tilton, Fred A., Kent, Michael L., Watral, Virginia G., Cunningham, Michael E., Markle, Douglas F., Sethajintanin, Doolalai, Krissanakriangkrai, Oraphin, Johnson, Eugene R., Grove, Robert Allan, Anderson, Kim A., Oregon State University. Department of Microbiology, Oregon State University. Department of Environmental and Molecular Toxicology, Oregon State University. Department of Fisheries and Wildlife, and Institute for Natural Resources
Abstract:: The Willamette River, one of only 14 American Heritage Rivers, flows through the most densely populated and agriculturally productive region of Oregon. Previous biological monitoring of Willamette River fish detected elevated frequencies of skeletal deformities in fish from certain areas of the lower (NP [NP], rivermile [RM] 26-55) and middle...
Resource Type:: Technical Report
Full Text:: Report: Environmental Stresses and Skeletal Deformities in Fish from the Willamette River, Oregon

The impact of small-scale dams on fishes of the Willamette River, Oregon and an evaluation of fish habitat models

Creator:: Li, Hiram W., Schreck, Carl B., Tubb, Richard A., Rodnick, Kenneth, Alhgren, Marie, Crook, Amy, Oregon Cooperative Fishery Research Unit, Oregon State University. Department of Fisheries and Wildlife, Oregon State University. Water Resources Research Institute, and United States. Bureau of Reclamation
Resource Type:: Technical Report
Full Text:: research on which this report is based was financed i n part by the United States Department of the

Influences of clearcut logging on macroinvertebrates in perennial and intermittent headwaters of the Central Oregon Coast Range

Creator:: Banks, Janel
Abstract:: This research was designed to broaden the understanding of how timber-harvest affects aquatic macroinvertebrates in perennial and intermittent headwater streams. This study compared emergent and benthic macroinvertebrate assemblages from 20 headwater streams in the central Oregon Coast Range that varied by harvest condition and flow duration. Through comparison of the...
Resource Type:: Masters Thesis
Full Text:: , driven primarily by rare taxa encountered in less than 5 of the 10 clearcut sites. Emergent insect

Population demography, resource use, and movement in cooperatively breeding Micronesian Kingfishers

Creator:: Kesler, Dylan C.
Abstract:: Island systems and species are susceptible to extinction because of their small population size and an ecological naiveté from an evolutionary past lacking strong competition and predation. For example, only one-fifth of the world’s bird species occur on islands, yet more than 90% of the avian extinctions witnessed during historic...
Resource Type:: Dissertation
Full Text:: dearth of information available about critically endangered Micronesian Kingfishers, combined with

Persistence of spatial distribution patterns of coastal cutthroat trout in a Cascade mountain stream

Creator:: Novick, Marc S.
Abstract:: Previous research in South Fork Hinkle Creek suggested that coastal cutthroat trout exhibit an aggregated spatial pattern across multiple spatial scales. To evaluate the persistence of the observed abundance patterns and identify factors that affect those patterns, half-duplex passive integrated transponders (PIT-tags) were implanted in 320 coastal cutthroat trout (>...
Resource Type:: Masters Thesis
Full Text:: fish in mainstem study sections. A majority (70%) of fish detected moving traveled 25 m or less

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis
Full Text:: . However, little information exists on specific habitat associations of oak-associated wildlife in the

Effects of estuarine circulation patterns and stress on the migratory behavior of juvenile salmonids (Oncorhynchus sp.)

Creator:: Truelove, Nathan Kobun
Abstract:: For the first objective of this thesis, we attempt to understand the role of water flow and directionality in determining steelhead (Oncorhynchus mykiss) and spring/summer and fall Chinook (O. tschawytscha) migration patterns within the Columbia River Estuary and plume by integrating recent advances in biotelemetry and environmental observation and forecasting...
Resource Type:: Masters Thesis
Full Text:: . 5 Introduction The life history, ecology, and ultimately survival of Pacific Salmon

Headwater stream macroinvertebrates of the H.J. Andrews Experimental Forest, Oregon

Creator:: Frady, Charles H.
Abstract:: Recent studies of headwater streams have demonstrated their importance to overall watershed biodiversity, nutrient cycling, and energy flux. However, little attention has been paid to long-term effects of forest harvest on macroinvertebrate communities in headwater streams. This study investigated headwater stream macroinvertebrate communities in the H.J. Andrews Experimental Forest, Oregon,...
Resource Type:: Masters Thesis
Full Text:: old growth forests. …………………………………………………………………. 5 Introduction

Seasonal movement patterns and habitat use of westslope cutthroat trout in two headwater tributary streams of the John Day River

Creator:: Starcevich, Steven J.
Abstract:: Radiotelemetry was used to study the seasonal movements and habitat use of adult westslope cutthroat trout Oncorhynchus clarki lewisi in Roberts Creek and Rail Creek, headwater tributaries of the John Day River, Oregon, from September 2000 to December 2001. The objectives were to (1) describe adult cutthroat trout life history...
Resource Type:: Masters Thesis
Full Text:: …………………………………………………… 5 Methods…………………………………………………….. 7 Defining seasons……………………………………. 7 Radiotagging

Biogeographic and experimental evidence for local scale dispersal limitation in central Panamanian forest birds

Creator:: Moore, Randall Phillips, 1965-
Abstract:: I examined the avian biogeography of the islands of Lago Gatun, Panama, in an effort to better understand the effects of forest fragmentation in this biodiverse region, and specifically to understand the importance of fragment isolation and the mechanism behind its effects on tropical bird distribution. I combined exhaustive surveys...
Resource Type:: Dissertation
Full Text:: number of islands………………………………………... 5. 1- Study area…………………………………………………………… 6. 2- Proportion of

ScholarsArchive@OSU

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

The impact of small-scale dams on fishes of the Willamette River, Oregon and an evaluation of fish habitat models

Influences of clearcut logging on macroinvertebrates in perennial and intermittent headwaters of the Central Oregon Coast Range

Population demography, resource use, and movement in cooperatively breeding Micronesian Kingfishers

Persistence of spatial distribution patterns of coastal cutthroat trout in a Cascade mountain stream

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Effects of estuarine circulation patterns and stress on the migratory behavior of juvenile salmonids (Oncorhynchus sp.)

Headwater stream macroinvertebrates of the H.J. Andrews Experimental Forest, Oregon

Seasonal movement patterns and habitat use of westslope cutthroat trout in two headwater tributary streams of the John Day River

Biogeographic and experimental evidence for local scale dispersal limitation in central Panamanian forest birds

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