Browsing Fisheries by Title
Now showing items 1-20 of 234
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A genetic risk assessment of native shellfish aquaculture
Global aquaculture production is expanding, as the demand for marine protein cannot be met by capture fisheries alone. Within shellfish aquaculture, growers have begun to cultivate native shellfish to limit introduction ... -
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 ... -
Accounting for Variability and Biases in Data-limited Fisheries Stock Assessment
Many regions of the world have very few stocks assessed, often due to limited data quality or quantity or lack of trained scientists to apply and interpret stock assessments. These same areas with fewer assessments perform ... -
Advances in Models for Assessing Interactions of Forage Fish and Their Predators and Application to Ecosystem Based Fisheries Management (EBFM)
Ecosystem-based fisheries management (EBFM) involves considering tradeoffs between competing objectives in fisheries management. Forage fish world-wide are an important prey source for a wide range of predators but also ... -
Alternative harvest strategies to alleviate predation bottlenecks: a bioeconomic modeling approach to inform adaptive management
There has been increasing emphasis on using ecosystem-based management to account for the effects of trophic interactions in fisheries. However, such approaches require knowledge of ecosystem structure and function often ... -
Amphibian Exposure to Aquatic Herbicides: Ecological Interactions with Invasive Plant Management
Loss and degradation of wetland habitats are primary factors in amphibian declines. Wetland restoration may involve the use of aquatic herbicides to remove invasive plants, yet the impacts of aquatic herbicide tank-mixes ... -
An examination of predator control techniques for the protection of critically endangered species.
Feral cats (Felis catus) have been shown to be a main contributor to species decline throughout the world and are especially threatening to insular species that lack adequate defense characteristics. Feral cat control ... -
An exploration of speciation and genome-wide uncertainty in flatfishes based on exon-capture data
The flatfishes (Pleuronectiformes) have undergone numerous taxonomic revisions but many of their interrelationships still lack consensus among the scientific community at both the species-level and deep evolutionary ... -
Analyzing the chemical tracers in fin rays: a non-lethal approach to infer the migratory patterns of bull trout
Effective management and conservation of migratory species requires identifying the habitats that individuals within and among populations use throughout their lives. As a diversity of life history strategies can buffer ... -
Applied ecosystem chemistry: linking biogeochemical and physiological processes to ecological interactions
Physical environments are changing globally due to anthropogenic impacts which have the potential to alter ecological interactions. To understand how ecological interactions are changing, long-term datasets are necessary ... -
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 ... -
Assessing the Utility of Tributary PIT-Tag Arrays in Monitoring Snake River Salmonid Recovery
Passive integrated transponder (PIT) tag technology is used in the Columbia River basin to monitor migration of threatened and endangered salmonid populations. From 2010 to 2018, the number of tag detection arrays installed ... -
Assessment of mesh size selectivity under commercial fishing conditions
(1996)The present study is entirely focus on the analysis selectivity from alternate-haul experiments performed on fishing grounds off the coasts of Washington, Oregon and northern California, and in the Bering Sea, under ... -
An Assessment of the Impact of Non-Native Lake Trout Salvelinus namaycush and Mysis diluviana on the Growth and Survival of Pelagic Planktivores in Lake Tahoe
Due to introductions of non-native species and the extirpation of native species, the food web of Lake Tahoe has undergone many changes over the past century. This study quantified temporal and ontogenetic trophic interactions ... -
At the intersection of fisheries and climate change: Emergent challenges for Pacific salmon management in a warming world
A changing environment is not a new challenge for Pacific salmon. This group of fishes has proven resilient, persisting over millions of years while surviving massive changes in climate and physical habitats. There is ... -
Beluga whale distribution, migration, and behavior in a changing Pacific Arctic
Sea ice is disappearing at unprecedented rates in the Pacific Arctic with potential impacts to ice-associated marine predators that migrate to this seasonally accessible and productive ecosystem. In this dissertation I ... -
Biology and fisheries for the spot prawn (Pandalus platyceros, Brandt 1851)
(2007)In this dissertation I investigate aspects of the biology and fisheries for the spot prawn (Pandalus platyceros Brandt 1851). I clarified several basic biological issues, including the geographic range and the length of ... -
Biophysical mechanisms underlying the recruitment process in walleye pollock (Theragra chalcogramma)
(1999)Recruitment variability in marine fish species is not well understood, yet is very important as a component of fishery management. This dissertation describes a set of coupled biological and physical simulation models ... -
Carbon Dynamics on Floodplains of the Yangtze and Mekong Rivers
The lateral expansion and contraction of rivers across their floodplains inextricably links aquatic and terrestrial ecosystem processes for part of each year, yet our understanding of the ecological responses to this ... -
Challenges and opportunities for aquatic ecosystem management with uncertain global change
Society is faced with the task of effectively managing to enable ecosystem resilience to anthropogenic stressors and future change. Ecosystems are part of complex social-ecological systems where humans impact ecosystems ...