Browsing Fisheries by Title
Now showing items 154-173 of 238
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Parasites of the past: Tracking change in marine parasite abundance over time
In recent years, disease ecologists have perceived a dramatic increase in infectious-disease-related mass mortality events among marine organisms. But does this increase reflect an actual rise in rates of infectious disease, ... -
Partial Migration of Puget Sound Coho Salmon (Oncorhynchus kisutch) Individual and Population Level Patterns
(2013-11-14)Partial migration, the behavior pattern in which a portion of a population migrates while others do not, is a widespread phenomenon with ecological and evolutionary consequences. Most Coho Salmon (<italic>Oncorhynchus ... -
Patterns and ecological implications of small hydropower development in Brazil
The growing demand for renewable energy is fueling a global proliferation of Small Hydropower Plants (SHPs), which represents an emerging threat for freshwater ecosystems and aquatic biodiversity. The general perception ... -
Patterns of bacterial communities in aquatic ecosystems
(2014-02-24)Understanding patterns of bacterial community diversity and composition associated with environmental gradients is crucial to better understand the processes underlying bacterial biogeography and potentially formulate ... -
Patterns, dynamics, and potential roles of DNA methylation in reef corals and their allies
Epigenetic processes, which contribute to gene regulation without affecting underlying DNA sequences, are increasingly recognized as molecular mechanisms that shape phenotypes. DNA methylation is the best understood ... -
Persisting in the pelagic: environmental, behavioral, and morphological controls on predator-prey interactions
(2014-04-30)Persisting in the pelagic is not easy. The physical environment of pelagic ecosystems is highly dynamic. Unlike terrestrial systems where habitat complexity is driven by physical structure (e.g., vegetation and terrain), ... -
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 ... -
Physical controls on land-water linkages: Carbon cycling and food webs in boreal watersheds
Aquatic ecosystem responses to changing climate and land-use are often extremely heterogeneous across landscapes: studies than quantify relationships between watershed features and biogeochemical and food web processes at ... -
Physiological response of shellfish native to the North American Pacific Coast to ocean acidification and warming
Following observations of shifting ocean conditions an enormous scientific effort has explored the response of marine species to ocean acidification and warming. Empirical data has established that many species are vulnerable ... -
Plasma cholinesterase activity as a biomarker for quantifying exposure of green sturgeon (Acipenser medirostris) to carbaryl following applications to control burrowing shrimp in Washington State
Willapa Bay, located in Southwestern Washington State (USA), is one of the rare intertidal locations where large-scale pesticide applications occur. Since the 1960s, carbaryl has been applied to mudflats in Willapa Bay ... -
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 genomics of Salish Sea chum salmon: The legacy of the salmonid whole genome duplication
The common ancestor of salmonids underwent a whole genome duplication approximately 88 million years ago. This duplication event still has a lasting impact on the form and structure of salmon genomes today and is evident ... -
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 ... -
Post-release Survival of Chinook Salmon and Steelhead Trout from an Experimental Commercial Fish Trap in the Lower Columbia River, WA.
Gillnets and other conventional harvest techniques utilized in mixed-stock commercial salmon fisheries frequently result in bycatch mortality. In many parts of the U.S Pacific Northwest, bycatch and hatchery impacts impede ... -
The Predator's Dilemma: Investigating the responses of seabirds to changes in the abundance and distribution of small pelagic prey
(2012-09-13)Understanding relationships between predators and their prey is a central question in ecology and ecosystem management. For seabirds, relationships between food availability and breeding success and survival are typically ... -
Production of cutthroat trout (Salmo clarki) in relation to riparian vegetation in Bear Creek, Washington
(1985)Removal of riparian vegetation can alter salmonid production in streams. This study examined relationships linking fish production with riparian vegetation, excluding those associated with physical disturbance of habitat.Bear ... -
Quantification and regulation of thyroid stimulating hormone (TSH) and TSH messenger RNA in salmon
(1997)Thyroid activity is regulated by the hypothalamic-pituitary-thyroid axis. Using a recently developed radioimmunoassay (RIA) for coho salmon (Oncorhynchus kisutch) thyroid stimulating hormone (TSH), an in vitro pituitary ... -
Quantifying Features of Arctic Odontocete Echolocation and Marine Habitat Variation in West Greenland
Monitoring Arctic cetacean habitat use enables identification of biologically important regions and predictions of climate change effects, both of which are critical to conservation efforts. The beluga (Delphinapterus ... -
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 ...