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A comparative study of the infauna of the Central Oregon continental shelf

Creator:: Bertrand, Gerard A. (Gerard Adrian)
Resource Type:: Dissertation
Full Text:: pairs of variables to be tested is N, the de- grees of freedom in this case are N- 2. The correlation

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

An evaluation of the Earth Resources Technology Satellite (ERTS-1) multispectral scanner as a tool for the determination of lacustrine trophic state

Creator:: Boland, Dale H. P.
Abstract:: This study evaluates the Earth Resources Technology Satellite- One (ERTS-1) multispectral scanner (MSS) as a means of predicting lacustrine trophic state and the magnitude of selected trophic state indicators. Numerical classificatory methods are employed to ascertain the trophic character of 100 lakes in Minnesota, Wisconsin, Michigan, and New York using...
Resource Type:: Dissertation
Full Text:: An evaluation of the Earth Resources Technology

Bottom-up Drivers of Primary Producers and Predator Populations in Oregon Streams

Creator:: Kaylor, Matthew J.
Abstract:: Humans have drastically altered the physical habitat and food web structure of stream ecosystems. Two major impacts humans have had on Pacific Northwest streams are modification of streamside forests (as a result of agriculture, land development, and timber harvest), and declines in the return of wild anadromous salmon to headwater...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE

Classification and management of earthen aquaculture ponds, with emphasis on the role of the soil

Creator:: Bowman, James R.
Abstract:: Soil, water, and climatic classification systems are reviewed as background for the construction of a classification system for earthen aquaculture ponds. The physical and chemical properties of important soil types are also reviewed because of the critical role that the soil plays in earthen pond systems. A pond classification system...
Resource Type:: Dissertation
Full Text:: domain of limnology and requiring a more comprehensive approach to classification. The inclusion of

Distribution of Euphausiacea and Copepoda off Oregon in relation to oceanographic conditions

Creator:: Hebard, James Frank
Abstract:: Fifty-two one-meter plankton net samples from four stations off Newport, Oregon, were examined for composition and abundance of euphausiids and copepods. They provided data on dominance, species associations and environmental relationships. The euphausiid-copepod population off Oregon is composed of 12 numerically dominant species. These species occurred in most of the...
Resource Type:: Dissertation
Full Text:: to increase in abundance in February 1964 and de- veloped peaks of abundance between March and July

Drought, dispersal, and community dynamics in arid-land streams

Creator:: Bogan, Michael T.
Abstract:: Understanding the mechanisms that regulate local species diversity and community structure is a perennial goal of ecology. Local community structure can be viewed as the result of numerous local and regional processes; these processes act as filters that reduce the regional species pool down to the observed local community. In...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Michael T

Ecological relationships among western Ephemerellidae : growth, life cycles, food habits, and habitat relationships

Creator:: Hawkins, Charles Patrick
Abstract:: The purpose of this study was to describe the life cycles, feeding ecology, and habitat use of western species in the mayfly family Ephemerellidae. Data were used to compare the ecological relationships and strategies among species and to examine patterns of adaptive radiation within the family. Data were further used...
Resource Type:: Dissertation
Full Text:: : Growth, Life Cycles, Food Havits, and Habitat Relationships AN ABSTRACT OF THE THESIS OF Charles

Ecological responses to riverine floods and flow alteration

Creator:: McMullen, Laura E.
Abstract:: Floods are major disturbance events for riverine ecosystems, directly and indirectly impacting organisms and their habitat. In this study I investigated the role of riverine floods and flow alteration in regulating aquatic macroinvertebrate population and community structure. I examined this problem using a variety of methods: a meta-analytic review of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Laura

Evaluating the Ecological Trade-Offs of Riparian Thinning for Stream Ecosystems in Second-Growth Redwood Forests of Northern California

Creator:: Roon, David A.
Abstract:: Riparian forests provide a myriad of ecosystem functions for adjacent streams and rivers, and due to these linkages, changes in riparian forest conditions can have direct implications for stream ecosystems. Resource managers in the coast redwood forests (Sequoia sempervirens) of northern California (USA) are actively thinning second-growth stands to accelerate...
Resource Type:: Dissertation
Full Text:: ? Effects of small-scale forest harvesting on stream ecosystems. International Journal of Limnology 48: 401

ScholarsArchive@OSU

A comparative study of the infauna of the Central Oregon continental shelf

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

An evaluation of the Earth Resources Technology Satellite (ERTS-1) multispectral scanner as a tool for the determination of lacustrine trophic state

Bottom-up Drivers of Primary Producers and Predator Populations in Oregon Streams

Classification and management of earthen aquaculture ponds, with emphasis on the role of the soil

Distribution of Euphausiacea and Copepoda off Oregon in relation to oceanographic conditions

Drought, dispersal, and community dynamics in arid-land streams

Ecological relationships among western Ephemerellidae : growth, life cycles, food habits, and habitat relationships

Ecological responses to riverine floods and flow alteration

Evaluating the Ecological Trade-Offs of Riparian Thinning for Stream Ecosystems in Second-Growth Redwood Forests of Northern California

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