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Browsing Department of Fisheries and Wildlife by Title

Browsing Department of Fisheries and Wildlife by Title

Now showing items 688-707 of 842

Salmon and marine-derived nutrient effects on primary and secondary trophic levels

Claeson, Shannon M. (2004-12-15)

The purpose of this study was to understand the influence of organic material and nutrients from spawning salmon and supplemented salmon carcasses on stream food webs. My study objectives were to examine 1) assimilation ...
Salmon recovery in the Pacific Northwest : defining what constitutes a wild salmon

Courter, Ian I. (2005-06-08)

In spite of considerable efforts to restore natural runs of anadromous salmonids in the Pacific Northwest, they remain at risk of extirpation. Along with many other factors influencing the decline, stocking from hatche ...
Salt use by mule deer in the Deschutes National Forest of central Oregon

Black, Hugh C., 1941- (1954-07-26)
Sandy beach surf zones : what is their role in the early life history of Chinook salmon?

Marin Jarrin, Jose R., 1980- (2012-10-05)

Early life stages of many marine and diadromous fish species use sandy beach surf zones, which occur along >50% of the world's marine coastlines. This extensive habitat can provide juvenile fishes with an abundant supply ...
Satellite monitored dive characteristics of the northern right whale, Eubalaena glacialis

Nieukirk, Sharon L. (1992-12-07)

The western North Atlantic population of the northern right whale (Eubalaena glacialis) was severely depleted by whaling over the last century. Despite over fifty years of protection, fewer than four hundred individual ...
Scale analyses of steelhead trout : Salmo gairdnerii gairdnerii Richardson, from various coastal watersheds of Oregon

Bali, John Merton (1958-07-14)
Scale patterns indicate changes in use of rearing habitat by juvenile coho salmon, Oncorhynchus kisutch, from 1955 to 1984 in the Tenmile Lakes, Oregon

Gunnarsdottir, Hugrun (1992-03-16)

This study was designed to provide information about the juvenile life history of coho salmon, Oncorhynchus kisutch, in the Tenmile Lakes in Oregon by 1) classifying scales of spawning fish and outgoing smolts (1+), 2) ...
Sea urchin-kelp forest communities in marine reserves and areas of exploitation : community interactions, populations, and metapopulation analyses

Moctezuma, Gabriela Montaño (2001-12-20)

Marine ecosystems can be exposed to natural and anthropogenic disturbances that can lead to ecological failures. Marine reserves have been lately suggested to protect marine populations and communities that have been a ...
Seasonal changes in distribution and abundance of salmonids and habitat availability in a coastal Oregon basin

Sleeper, Jack David (1993-09-07)

Visual estimation techniques were used to quantify habitat characteristics, habitat type (pool, riffle) use and longitudinal distribution of steelhead (Oncorhynchus mykiss), cutthroat trout (0. clarki), and coho salmon ...
Seasonal changes in distribution of coastal cutthroat trout in an isolated watershed

Hendricks, Steve (2002-06-06)

In an effort to identify seasonal distribution patterns and habitat requirements of coastal cutthroat trout Oncorhynchus clarki clarki, movement of tagged and marked individuals (35 radio-tagged, 753 PIT-tagged, and 5, ...
Seasonal distribution and environment of adult Pacific herring (Clupea harengus pallasi) near Auke Bay, Lynn Canal, southeastern Alaska

Carlson, Harry Richard (1984-11-13)

The distribution of adult Pacific herring (Clupea harengue pallasi) near Auke Bay, Lynn Canal, southeastern Alaska, varied by depth and geographic area over 24 successive months during 1973-75. From June through Septe ...
Seasonal influences on food availability and diet of coastal cutthroat trout in relation to riparian vegetation

Romero, Nicolas (2003-12-19)

Current riparian management objectives in the Pacific Northwest promote both retention of existing conifers and conversion of hardwood-dominated areas to conifers. Although understanding of relationships between ripari ...
Seasonal movement, home range, and abundance of the Mariana Common Moorhen (Gallinula chloropus guami) on Guam and the northern Mariana Islands

Takano, Leilani L. (2003-03-18)

The endemic avifauna of Guam and the Mariana Islands represent a unique assemblage of bird species found nowhere else in the world and thus, are of considerable biological and conservation importance. Unfortunately, mo ...
Seasonal movements and home ranges of mule deer at Lava Beds National Monument

Purcell, Alice (1979-12-12)
Seasonal properties of the coyote scent station index

Griffith, Dennis Bradley (1976-05-20)

Six standard coyote scent station index lines and one scentless control line were repeatedly sampled from May through October, 1974, on a 400 square mile study area in Central Oregon. The scent station index remained rel ...
Seasonal shifts in redband trout use of pools and their microhabitats in three central Oregon streams

Hirsch, Christine L. (1995-10-31)

Redband trout density was examined in three forested streams in central Oregon at two scales, pool channel unit and microhabitat. Two streams were in roadless areas and one was in a "highly managed" watershed. At the l ...
Sediment characteristics and the trophic status of four Oregon lakes

Meyerhoff, Roger Dean (1976-06-17)

There is evidence that recent ecological changes in lakes and their watersheds can be detected from analysis of lake sediments. This study was initiated to correlate changes in some sediment characteristics of four Oreg ...
Selected aspects of the pharmacodynamics of malathion in Cancer magister Dana

Lebsack, Stephen Grant (1977-03-11)

The metabolism of malathion in vivo was studied by injection of adult male Dungeness crab, Cancer magister, with 0.75 [mu]g/g wet weight [³H] malathion. At selected times within 24 hours of injection, subsamples of three ...
Selection of day roosts by female long-legged myotis (Myotis volans) in forests of the central Oregon Cascades

Ormsbee, Patricia (1996-02-09)

Measuring habitat selection by bats is complicated by their intricate life cycle. Scaling habitat measurements to reflect a hierarchal habitat selection process can help to define habitat associations of bats. I assessed ...
Sensitivity of the stock synthesis assessment model : a simulation approach

Yin, Yanshui (2001-09-28)

Stock assessments for many U.S. Pacific coast groundfish stocks are developed using the catch-at-age method known as Stock Synthesis. In this work a simulation package was developed and used to evaluate the sensitivity ...