Index Catalog // ScholarsArchive@OSU

A geographical framework for assessing longitudinal patterns in stream habitat and fish distribution

Creator:: Torgersen, Christian E.
Abstract:: New approaches are needed to quantify and understand spatial patterns of stream fishes and their environment. Concepts in riverine ecology emphasize the importance of thermal zones and gradual longitudinal changes in physical habitat and biota, but little is known about spatial variability within the river continuum. I present a conceptual...
Resource Type:: Dissertation
Full Text:: . To be submitted to the Journal of the North American Benthological Society 7 ABSTRACT New

Forests to floodplain meadows : detrital dynamics in two headwater streams

Creator:: Brookshire, E. N. Jack
Resource Type:: Masters Thesis
Full Text:: Headwater Streams AN ABSTRACT OF THE THESIS OF E.N. Jack Brookshire for the degree of Master of Science

From continua to patches : longitudinal patterns in the Middle Fork of the John Day River, Oregon

Creator:: Wright, Kristopher Keith
Abstract:: The Middle Fork John Day River is composed of low gradient, alluvial valley segments separated by constrained, canyon-like reaches, and has a history of multiple land-uses. These factors can alter the physical and biological structure of streams, and disrupt the longitudinal river continuum. I examined habitat, fish, macroinvertebrates, and primary...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Kristopher Keith Wright for the

Heterogeneous thermal habitat for northeast Oregon stream fishes

Creator:: Ebersole, Joseph L.
Abstract:: Discrete coldwater patches within warm streams provide potential thermal refuge for coldwater fishes during periods of heat stress. This analysis focused on heterogeneity in stream water temperatures as influenced by local influx of cooler subsurface waters. Using field thermal probes and recording thermistors, we identified and characterized coldwater patches potentially...
Resource Type:: Dissertation
Full Text:: ., De Staso and Rahel 1994). In addition to longitudinal patterns of temperature, lateral (e.g., off

Indicators for Monitoring Biological Integrity of Inland, Freshwater Wetlands : A Survey of North American Technical Literature (1990-2000)

Creator:: Adamus, Paul R.
Abstract:: Potentially relevant literature for the years 1990-1999 was identified by (a) conducting keyword searches of computerized bibliographic databases, especially CAB Abstracts and Aquatic Sciences and Fisheries Abstracts, (b) reading through the tables of contents of a few especially relevant journals, (c) searching the internet for pertinent bibliographies, and (d) to...
Resource Type:: Technical Report
Full Text:: bacterial communities: application to sediment. Journal of Microbiological Methods. 38: 43-52 de Souza

Response of the cyanobacterium Aphanizomenon flos-aquae to vascular plant decomposition products

Creator:: Haggard, Kale G.
Abstract:: Upper Klamath Lake in south central Oregon annually experiences intense blooms of cyanobacteria, primarily Aphanizomenon flos-aquae. Domination of the lake phytoplankton community by this single species regularly results in drastic changes to water quality. Photosynthetic activity of such extensive populations can result in pH over 10. Blooms typically expire in...
Resource Type:: Masters Thesis
Full Text:: straw in 25 L de-chlorinated tap water. The barley straw was a composite of breeding lines grown at

Riparian and adjacent upslope beetle communities along a third order stream in the western Cascade Mountain Range, Oregon

Creator:: Brenner, Gregory John
Abstract:: Monitoring wildlife habitats has become important to forest ecosystem management because it provides valuable information about the response of forests and their species to harvest practices, impacts from recreational use, conservation efforts, and natural and human-caused disturbances. Monitoring is a complex task that requires a variety of abiotic and biotic...
Resource Type:: Dissertation
Full Text:: Segelquist 1978). Lockwood and De Bray (1990) suggested that extinction of the Rocky Mountain grasshopper

Riparian litter inputs to streams in the central Oregon Coast Range

Creator:: Hart, Stephanie K.
Abstract:: Riparian zone vegetation can influence terrestrial and aquatic food webs through variations in the amounts, timing, and nutritional content of leaf and other litter inputs. Differences in vegetation composition and density, as well as riparian topography, may modulate the strength and quality of these inputs. Changes in inputs to small...
Resource Type:: Masters Thesis
Full Text:: Master document AN ABSTRACT OF THE THESIS OF

Tidal influence on downstream fining in gravel-bed rivers

Creator:: Coles, Derron Rafiq
Abstract:: This research examines the downstream fining phenomenon as it operates in coastal gravel-bed rivers of Oregon. Downstream fining is a change in bed composition toward smaller sediment sizes in the downstream direction. Changes in stream flow discharge and channel slope affect the rate of bed-load transport, thereby altering the downstream...
Resource Type:: Dissertation
Full Text:: Coles dissertation_fini_june29 AN ABSTRACT OF THE

Ultraviolet radiation as an environmental stressor of amphibians

Creator:: Bancroft, Betsy A.
Abstract:: My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
Resource Type:: Dissertation
Full Text:: ), crustaceans (Hessen, 2003) and humans (van der Leun & de Gruijl, 1993). The effects of UVB radiation on

ScholarsArchive@OSU

A geographical framework for assessing longitudinal patterns in stream habitat and fish distribution

Forests to floodplain meadows : detrital dynamics in two headwater streams

From continua to patches : longitudinal patterns in the Middle Fork of the John Day River, Oregon

Heterogeneous thermal habitat for northeast Oregon stream fishes

Indicators for Monitoring Biological Integrity of Inland, Freshwater Wetlands : A Survey of North American Technical Literature (1990-2000)

Response of the cyanobacterium Aphanizomenon flos-aquae to vascular plant decomposition products

Riparian and adjacent upslope beetle communities along a third order stream in the western Cascade Mountain Range, Oregon

Riparian litter inputs to streams in the central Oregon Coast Range

Tidal influence on downstream fining in gravel-bed rivers

Ultraviolet radiation as an environmental stressor of amphibians

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