Browsing Fisheries by Title
Now showing items 145-164 of 238
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Native and nonnative fish community and food-web dynamics in dryland streams of the American Southwest
Freshwater biodiversity is at once the most diverse and the most imperiled among the world’s ecosystems. In the southwest, regional biodiversity and endemism face challenges imposed by declining water availability and ... -
Nearshore larval fishes of Puget Sound
Puget Sound is home to about 220 fish species that produce pelagic larvae, however little is known about their early life history. Larval fishes were collected from the six basins (Rosario, Whidbey, Admiralty, Central, ... -
The non-lethal threat of hypoxia: ecological effects and physiological responses of estuarine species
Hypoxia [dissolved oxygen (DO) < 2 mg/L] is one of the key threats to some of the most productive regions of the marine environment (e.g., estuaries). Although mortality can occur, mobile organisms have the potential to ... -
Non-native species, size distributions, and nutrient recycling in southwestern stream communities
Non-native species introductions are a ubiquitous form of environmental change. However, the role of introductions in ecosystem functioning is still poorly understood, especially in highly invaded systems with multiple ... -
Nonanadromous Life History Diversity of Rainbow Trout (Oncorhynchus mykiss)
Rainbow trout (Oncorhynchus mykiss) is a salmonid species, native to Pacific Ocean drainages in North America and eastern Russia, which exhibits fluvial (stream-resident), adfluvial (lake-migrant), and anadromous (ocean-migrant) ... -
Ocean acidification and disease: How will a changing climate impact Vibrio tubiashii growth and pathogenicity to Pacific oyster larvae?
(2012-09-13)Vibrio tubiashii (Vt) is a causative agent of vibriosis in molluscan bivalves. Recent re-emergence of vibriosis in economically valuable shellfish, such as the Pacific oyster (Crassostrea gigas) in Washington State, has ... -
Ocean acidification influences on physiology and epigenetics in the Pacific oyster (Crassostrea gigas)
As ocean acidification continues to impact marine ecosystems at unprecedented rates, phenotypicplasticity may allow organisms to withstand more stressful conditions. Genomic methods can elucidate molecular mechanisms that ... -
Operational Harvest Control Rules and their Application to a Recovering Forage Fish Stock
Since the 1990s, international fisheries management has strived towards implementing precautionary management practices to reduce the risk of overfishing and subsequent stock collapse, and to promote rebuilding stocks from ... -
Overfishing or environmental change: Establishing the frequency of changes in productivity of marine fish stocks
(2013-07-25)The relative importance of environmental conditions and stock abundance in determining the productivity of fish stocks has been a subject of an on-going debate. The controversy can be formulated as four competing hypotheses: ... -
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 ...