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Browsing Department of Fisheries and Wildlife by Title

Browsing Department of Fisheries and Wildlife by Title

Now showing items 315-334 of 838

Factors affecting coho salmon production in Oregon

Scarnecchia, Dennis Leslie (1978-08-04)

Eight scale characters of known hatchery and wild coho salmon (Oncorhynchus kisutch) were compared, and a linear discriminant function was used to determine if hatchery and wild adult coho salmon could be correctly id ...
Factors affecting colony size, reproductive success, and foraging patterns of double-crested cormorants nesting on East Sand Island in the Columbia River Estuary

Anderson, Cynthia D. (2002-10-21)

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 San ...
Factors affecting habitat use by black-tailed deer and Roosevelt elk in the Silver Burn, Southwestern Oregon

Michalski, Bret L. (1994-07-14)

A wildfire burned over 40,000 ha of conifer and mixed conifer-hardwood forest in the Silver Creek drainage of southwestern Oregon in the fall of 1987 allowing me to assess big game use of a large natural burn. I used f ...
Factors Affecting Incubation Patterns and Sex Roles of Black Oystercatchers in Alaska

Spiegel, Caleb S.; Haig, Susan M.; Goldstein, Michael I.; Huso, Manuela (Cooper Ornithological Society, 2012-02)

Studies examining the effects of human disturbance on avian parental behavior and reproductive success are fundamental to bird conservation. However, many such studies fail to also consider the influence of natural thr ...
Factors affecting the ecology of small mammals on Malheur National Wildlife Refuge

Feldhamer, George A. (1976-12-02)
Factors affecting the mortality of pronghorn antelope in Oregon

Yoakum, James Donovan (1957-05-08)

A study was undertaken to account for and authenticate all mortality factors affecting pronghorn antelope herds in Oregon. Work commenced in June, l954, and terminated in July, 1956. Information pertaining to antelope ...
Factors affecting the saltwater-entry behavior and saltwater preference of juvenile chinook salmon, Oncorhynchus tshawytscha

Price, Carol Seals (2002-04-09)

From 1998-2000, laboratory studies were conducted to examine factors that impact saltwater-entry behavior and saltwater preference (SWP) of juvenile chinook salmon, Oncorhynchus tshawytscha. These factors included bact ...
Factors affecting the smolt yield of Coho salmon (Oncorhynchus kisutch) in three Oregon streams

Knight, Ned J. (1979-12-17)

Data from the coho salmon migration were examined from three streams of the Alsea Watershed Study, conducted on tributaries to Drift Creek, Oregon, from 1959 through 1973. With the migration season defined as November 1 ...
Factors determining production of coho salmon, Oncorhynchus kisutch, in three Oregon streams

Chapman, Donald Wallace (1961-05-12)
Factors influencing density, distribution, and mesohabitat selection of juvenile wild salmonids and residual hatchery winter steelhead

Brignon, William R.; Olson, Douglas E.; Schaller, Howard A.; Schreck, Carl B. (Elsevier, 2012-09-28)

To best manage Eagle Creek National Fish Hatchery, negative interactions between hatchery salmonids and Endangered Species Act listed wild salmonids in the Eagle Creek Basin need to be minimized. Our objectives were: 1) ...
Factors influencing spawning migration of bull trout (Salvelinus confluentus) in the North Fork Skokomish River, Olympic National Park, Washington

Brenkman, Samuel J. (1998-02-26)

Distribution and life history characteristics of lacustrine-adfluvial bull trout (Salvelinus confluentus) were described in the North Fork Skokomish River Basin (including Lake Cushman, a reservoir) from 1994 to 1996. ...
Factors influencing spawning site choice by female Garibaldi, Hypsypops rubicundus (Pisces: Pomacentridae)

Sikkel, Paul C. (1990-05-09)

The garibaldi, Hypsypops rubicundus, is a sexually monochromatic pomacentrid found in rocky subtidal areas of Southern and Baja California. During the spawning season, males attempt to attract females to a nest of red ...
Factors influencing the life history of spring chinook salmon (Oncorhynchus tshawytscha) spawning in the Columbia River watershed from 1960 to 1977

Barton, Anne Christine Kristiansson (1979-10-26)
Factors influencing the seaward migration of smolt steelhead trout : Salmo gairdnerii gairdnerii Richardson, in the Alsea River, Oregon

Andrews, Rupert Earle (1958-10-10)
Factors influencing within-watershed genetic variation of coastal cutthroat trout in Camp Creek, Oregon

Wofford, John E.B. (2003-12-17)

Because human land use activities often result in increased fragmentation of headwater stream habitats, a better understanding of the effects of fragmentation on the genetic heterogeneity of stream salmonids is useful ...
The factors leading to post-liberation mortalities of trout transported in tank trucks

Horton, Howard F. (1963-05-14)

The results of experiments conducted in 1957 and 1958 to isolate the cause of post-transportation mortalities among hatchery-reared rainbow trout, Salmo gairdneri Richardson, in Oregon are reported. Although death rat ...
Fall directions and breakage of riparian trees along streams in the Pacific Northwest

Sobota, Daniel J. (2003-04-17)
Fall migration of mourning doves in the western management unit

Miles, A. Keith (1976-07-07)
Farm fish pond production as influenced by climatic conditions

Oakley, Arthur Leo (1956-04-27)
The feasibility of a consumptive wild trout sport fishery on the North Fork of the Middle Fork of the Willamette River

Nicholas, Jay W. (1977-02-22)

The objective of this study was to determine whether wild populations of trout in the North Fork of the Middle Fork of the Willamette River can support a catch rate of 0.3-0.5 trout per hour at current levels of effort a ...