Browsing Fisheries by Title
Now showing items 21-40 of 238
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Characterizing fish schools in relation to the marine environment and their use by seabirds in lower Cook Inlet, Alaska
(2004)The primary purpose of this study has been to investigate the effects of environmental variability on seabird distributions and abundances at sea in lower Cook Inlet, Alaska. Sources of variability in seabird densities ... -
Characterizing the effects of ocean acidification in larval and juvenile Manila clam, Ruditapes philippinarum, using a transcriptomic approach
(2012)Ocean acidification as a result of anthropogenic carbon dioxide (CO2) emissions and global climate change poses a risk to the ecological landscape of intertidal and shallow subtidal communities. The organisms that inhabit ... -
Climate Change and Density Dependence in the North Pacific: Applications to Salmon Run Forecasting and Plankton Population Dynamics
We explore the role of density dependence and climate change in impacting different trophic levels of the North Pacific Ocean which supports some of the world’s largest fisheries. First, we evaluated the use of density ... -
Climate change and geomorphic evolution in an Alaskan watershed and implications for salmon production
(2013-04-17)Freshwater ecosystems are not only the source of a disproportionate number of ecosystem services given their relative area on the planet, but they are also highly sensitive to anthropogenic impacts including climate change. ... -
Combining bottom trawl and acoustic data to improve survey derived abundance estimates of semipelagic species
Abundances of semipelagic fishes are often estimated using acoustic or bottom trawl (BT) surveys, both of which sample a fraction of the water column. Acoustic instruments are effective at sampling the water column, but ... -
Community Effects of the Non-Indigenous Aquatic Plant Water Hyacinth (Eichhornia crassipes) in the Sacramento/San Joaquin Delta, California
(University of Washington, 2000)Biological invaders are widespread and can alter population dynamics and community structure of native ecosystems. Substantial habitat alteration by nonindigenous species can additionally affect the surrounding community. ... -
Comparative resource utilization of eastern North Pacific skates with applications for fisheries management
Skates (Rajiformes: Rajoidei) are an extremely diverse group of cartilaginous, marine fishes that are common mesopredators in benthic communities. Population declines, shifts in assemblage structure, and ecological ... -
Competition between non-native brook trout and coho salmon in the Elwha River, WA during dam removal
The removal of two dams on the Elwha River, WA is the largest dam removal project in US history. A major goal of this project is to restore historically abundant populations of Pacific salmon to the river, so it is important ... -
Contemporary controls and future predictions of non-native smallmouth bass range expansion into salmon-rearing habitat
(2013-11-14)Non-native fishes have been stocked in freshwater ecosystems throughout the world to support recreational fishing opportunities. Since their initial introduction and establishment many of these species have spread, and ... -
Contemporary population genetic structure and phylogeography of pink salmon
Pink salmon Oncorhynchus gorbuscha are the most abundant Pacific salmon, ranging widely across drainages of the North Pacific Ocean and Bering Sea from Japan in Asia to Washington State in North America. The species are ... -
Decadal Changes in Seabird Foraging Activity, Forage Fish, and Plankton in Cattle Pass, San Juan Islands, Washington
Published and unpublished reports suggest that seabird numbers have decreased markedly in the Salish Sea over the past several decades. I tested the hypothesis that seabird feeding activity in a known foraging location ... -
The deep-water red shrimp, Aristaeomorpha foliacea, of the Sicilian Channel: biology and exploitation
(1999)A research has been carried out the red shrimp, Aristaeomorpha foliacea, resources of the Strait of Sicily (Mediterranean Sea); the study was aimed at assessing the natural history of the local population, at evaluating ... -
Definition of Channel and Riparian Dynamics across a Disturbance Continuum: Implications for Salmon Restoration
(2013-07-23)A spatially explicit watershed and riparian habitat model was developed for quantifying site characteristics of riparian habitats of the lower Cedar River, Washington. The spatial complexity and distribution of combined ... -
Describing and Comparing Variability of Fish and Macrozooplankton Density at Marine Hydrokinetic Energy Sites
Marine hydrokinetic (MHK) operating licenses require biological monitoring to quantify effects of devices on aquatic organisms, but regulations for instrumentation, measurements, and sampling effort have not been standardized. ... -
Detrital shadows: Evaluating landscape and species effects on detritus-based food web connectivity in Pacific Northwest estuaries
(2013-04-17)University of Washington Abstract Detrital shadows: evaluating landscape and species effects on detritus-based estuarine food web connectivity in Pacific Northwest estuaries Emily Russell Howe Chairperson of the Supervisory ... -
Developing Tools and Resources for Maturation Control in Bivalvia
The significance of environmental stress and the physiology of bivalve mollusks is investigated under multiple- stressor conditions. The primary study animals are Pacific oysters (Crassostrea gigas) and Geoduck clams ... -
Development of a management regime for the eastern Pacific tuna fishery
(1980)The eastern Pacific tropical tuna fishery has developed in the last seven decades from its antecedents in a small pole-and-line fishery for albacore tuna in near-shore California waters to a large technologically-advanced ... -
DIEL HABITAT USE BY JUVENILE PACIFIC SALMON ALONG AN URBAN SHORELINE
A mobile dual-frequency identification sonar (DIDSON) was used as an alternate technology to characterize diel juvenile Pacific salmon (Oncorhynchus spp) distributions along an armored and eco-engineered marine shoreline. ... -
Direct and Indirect Effects of Predation on juvenile Chinook (Oncorhynchus tshawytscha) salmon
(2012-09-13)Optional: not applicable -
The distribution and timing of bearded seal (<italic>Erignathus barbatus</italic>) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas
The Arctic is experiencing dramatic shifts in climate that have led to changes in sea ice distribution, extent, and timing that pose adaptability challenges for Arctic species. Ice obligate species, such as the bearded ...