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Filtering by: Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife Committee Member Pereira, Cliff Remove constraint Committee Member: Pereira, Cliff

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Changes in size and age at maturity of Columbia River upriver bright fall chinook salmon (Oncorhynchus tshawytscha) : implications for stock fitness, commercial value, and management

Creator:

Beaty, Roy E.

Abstract:

The average size and age of chinook salmon (Oncorhynchus tshawytscha) caught in commercial fisheries along the Pacific Coast of North America have decreased substantially in this century. These declines might be caused in part by changes in size and age at maturity within the stocks contributing to those fisheries. Upriver...

Resource Type:

Masters Thesis
A comparison of nest site selection and reproductive effort by reticulate sculpin (Cottus perplexus) in two streams of different geologies in the central Coast Range of Oregon

Creator:

Bateman, Douglas S.

Abstract:

Nest sites of reticulate sculpin (Cottus perplexus) were located in two stream reaches, one from a basalt basin and one from a sandstone basin. Stream reaches were similar in gradient, basin area, elevation, climate, and riparian vegetation but differed in biologic community structure and substrate characteristics. An electivity index was...

Resource Type:

Masters Thesis
Characterization of stream fish assemblages and land use associations within a southern Ohio National Forest

Creator:

LaRue, Michelle L.

Abstract:

Seasonally, in 1998 and 1999, I examined spatial and temporal variation in fish assemblages of agricultural, forested, and acid mine drainage tributaries within the Wayne National Forest (WNF) in southern Ohio. Land use and natural disturbance explained patterns in stream fish assemblages. Creek chub and green sunfish were present in...

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Masters Thesis
The influence of fall-spawning salmon on growth and production of juvenile coho salmon rearing in beaver ponds on the Copper River Delta, Alaska

Creator:

Lang, Dirk W.

Abstract:

This thesis examined the influence of fall-spawning coho salmon on the density, growth rate, body condition, and survival to outmigration of juvenile coho salmon rearing in beaver ponds on the Copper River Delta, Alaska. During the fall of 1999 and 2000 fish rearing in ponds that received spawning salmon were...

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Masters Thesis
Habitat selection, reproductive success, and site fidelity of burrowing owls in a grassland ecosystem

Creator:

Ronan, Noelle A.

Abstract:

I used a comparative and experimental approach to examine nest habitat selection, reproductive success, and nest site fidelity of burrowing owls (Athene cunicularia) in a large, non-fragmented grassland in southwest California. In 1999, I compared habitat characteristics between nest sites (n = 31) and randomly selected, unoccupied burrows (n =...

Resource Type:

Masters Thesis
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
Nesting ecology of mallards in the Willamette Valley of Oregon

Creator:

Rickerson, Eric V.

Abstract:

Although widely studied in many portions of North America, little is known about the specific habitat requirements of mallard ducks (Anas platyrhynchos) during the breeding season in western Oregon. I radio-marked 72 female mallards in the Willamette Valley of Oregon in March-April 1995-96 to document wetland habitat selection during pre-nesting...

Resource Type:

Masters Thesis
Natural history and ecology of larval Lost River suckers and larval shortnose suckers in the Williamson River-Upper Klamath Lake System

Creator:

Cooperman, Michael S.

Abstract:

We monitored larval Lost River and shortnose suckers from natal beds in the Williamson and Sprague rivers to nursery grounds in Upper Klamath Lake. Downstream movements occurred at night, in the middle of the channel, and on the falling limb of the hydrograph. Ages, sizes, and developmental stages of larvae...

Resource Type:

Dissertation
Susceptibility of juvenile salmonids to avian predation : Are Caspian terns and double-crested cormorants only taking the sick and injured?

Creator:

Hostetter, Nathan J.

Abstract:

The ability to non-destructively assess fish condition and subsequently track fish behavior and survival can be vital in understanding natural and anthropogenic stressors and sources of mortality, especially in populations of fish listed as threatened or endangered. I investigated the use of a quick, non-lethal, external examination technique to assess...

Resource Type:

Masters Thesis
Analysis of a multispecies fishery : the commercial fishery fleet of Iquitos, Amazon Basin, Peru

Creator:

Tello, Salvador

Abstract:

In this study an analysis of the commercial fishery of the Loreto Region, with emphasis on the fishery fleet of Iquitos, Amazon Basin, Peru, is presented. There is evidence of a progressive replacement of large species by smaller, more productive and lower value species in the landing of the commercial...

Resource Type:

Masters Thesis

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Academic Affiliation

Fisheries and Wildlife[remove]15

Advisor

Li, Hiram2
Roby, Daniel D.2
Anthony, Robert G.1
Bayley, Peter B.1
Edge, W. Daniel1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1992 to 2010

View distribution

Committee Member

Pereira, Cliff[remove]15
Gregory, Stan2
Li, Hiram2
Adams, Darius1
Adams, Paul1
more Committee Members »

Creator

Anderson, Cynthia D.1
Bateman, Douglas S.1
Beaty, Roy E.1
Connolly, Patrick John, 1955 1
Cooperman, Michael S.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1992 to 2009

View distribution

Decade

2000-200911
1990-19994

Degree Field

Fisheries Science8
Wildlife Science7

Degree Level

Master's11
Doctoral4

Degree Name

Master of Science (M.S.)11
Doctor of Philosophy (Ph.D.)4

File Format

application/pdf4

Language

English [eng]15

License

All rights reserved9

Non-Academic Affiliation

Oregon State University. Graduate School15

Peer Reviewed

No11

Resource Type

Masters Thesis11
Dissertation4

Rights Statement

In Copyright10
Copyright Not Evaluated5

Subject

Biogeography -- Panama -- Gatun Lake1
Bird populations -- West (U.S.) -- Geographical distribution1
Birds -- Ecology -- Panama -- Gatun Lake1
Birds -- Panama -- Gatun Lake -- Geographical distribution1
Brook trout -- Ecology --Nevada -- Abel Creek1
more Subjects »

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