Fisheries
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Long-term change in the burden of anisakid nematode parasites for marine mammal hosts
Many marine mammal populations are failing to rebound despite legal protections; in this dissertation, I explore whether rising rates of parasitism may be placing an increasing energetic burden on already precarious host ... -
Shellfish aquaculture farms as foraging habitat for nearshore fishes and crabs in Puget Sound
Oyster reefs across North America have declined precipitously over the past 140 years. In Washington State, Olympia oyster Ostrea lurida reefs historically provided water filtration and nearshore structural habitat for ... -
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 ... -
A Management Strategy Evaluation for Transboundary Sablefish in the Northeast Pacific Ocean
Fisheries assessment science has long concerned itself about the incorporation of spatial stock structure into the development, testing and deployment of management strategies. The population dynamics of a stock may not ... -
Applying the Ideal Free Distribution Theory to two mobile predators on Pacific salmon: Commercial fishers and brown bears
Many ecological theories have been developed to shed light on the movement patterns of mobile predators foraging on their prey. Apex predators face additional challenges in needing to track mobile prey, both spatially and ... -
Quantifying food web interactions and limitations for native salmonids in Ross Lake, WA and implications for the introduction of anadromous salmonids
Food web function influences ecosystem productivity and plays a critical role in ecosystem services and conservation of species of concern. In reservoirs, existing and future changes to these ecosystems (e.g., invasive ... -
The ecology, sonic environment, and acoustic occurrence of subarctic baleen whales in the Bering Strait over a decade of change
The southern Chukchi Sea is a productive, shallow continental shelf ecosystem that is undergoing rapid change due to climate warming. Annual sea ice cover has declined significantly, potentially allowing for more temperate ... -
Multispecies fisheries management in Japan’s offshore waters: the case of Hokkaido Pacific offshore trawl
Japan is currently implementing its reformed fisheries policy. The new Fisheries Act passed by the Diet in 2018 stipulates that output control through Total Allowable Catch (TAC) is the principle for fisheries resource ... -
Population assessment of western North Pacific gray whales (Eschrichtius robustus)
(2003)Two geographically and genetically distinct populations of gray whales (Eschrichtius robustus) occur in the North Pacific, referred to as the eastern and western populations. Subjected to intensive modern commercial whaling ... -
Population Structure in Puget Sound Rockfishes (Sebastes spp.): Using Genetics To Inform Management Of A Vulnerable Species Complex
Successful management relies on the correct identification of management units. Quantifying the connectivity between populations is a critical factor in defining management units and improving fishery plans. Despite stock ... -
Informing salmon conservation with population models that account for individual heterogeneity
Managing threatened species requires information on their status and predictions of their response to management and environmental change. To develop this information, we often collect data and use them to parameterize ... -
Under what conditions can a novel invader (the marbled crayfish, Procambarus fallax f. virginalis) exert predation pressure on schistosome-competent snails?
The human burden of environmentally transmitted infectious diseases can depend strongly on ecosystem factors, including the presence or absence of natural enemies. Like natural enemies, non-native species influence the ... -
EPIBENTHIC INVERTEBRATES AND JUVENILE CHUM SALMON (ONCORHYNCHUS KETA) PREY AVAILABILITY ALONG AN ECO-ENGINEERED SHORELINE: A CASE STUDY AT THE SEAWALL IN SEATTLE, WASHINGTON
Shoreline development can alter coastal processes resulting in habitat loss and species assemblage shifts, but eco-engineered enhancements, or modifications to hard structures that mimic or support ecological processes, ... -
The environmental microbial composition and pathogen reduction capability of temperate seagrass beds
Marine pathogens present serious challenges to aquaculture, fisheries productivity, and marine conservation requiring novel solutions to identify, control, and mitigate their effects. Several ecological habitats, such as ... -
Phenotypic Plasticity in Economically and Ecologically Important Bivalves in Response to Changing Environments
Marine bivalves are ecologically important, providing ecosystem services like filtering water, stabilizing substrate, and creating hard structure for epibionts. Cultured bivalves are also economically important, supporting ... -
The shifting habitat mosaic in a coastal river and climate services in Indigenous communities
Much of the theoretical foundation in ecology has viewed ecosystems as though they were typically in a state of equilibrium, ignoring the dynamic and complex dynamics we appreciate more today. A paradigm shift in the late ... -
Foraging Ecology and Population Dynamics of Northern Sea Otters (Enhydra lutris kenyoni) in Washington State
Many marine mammal populations are currently recovering from population depletion after overharvest. As marine mammals are often important predators in shaping marine ecosystems, there is a need to understand the impacts ... -
Understanding the effects of environmental variability on demography in species with complex life histories through integrated population modeling
Understanding the spatio-temporal variability in demography offers insight into factors underlying the dynamics and viability of wildlife populations. However, sparse monitoring data or persistent knowledge gaps can make ... -
Drivers and Fitness Consequences of Dispersal and Structure in Wild Sockeye Salmon Populations (Oncorhynchus nerka)
The life histories of migratory species such as salmonids, sea turtles, and birds often involve return migrations between feeding and natal habitats. These natal homing behaviors are known to produce structured metapopulations, ... -
Systematics of Snailfishes (Family Liparidae): Description of Two New Species from the Aleutian Islands and Investigation of the Utility of Exon Capture Techniques
The snailfishes of the family Liparidae are a speciose and geographically widespread family of fishes residing in cold and temperate waters worldwide in both the shallow and deep ocean. Characterized by soft, scaleless, ...
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