Browsing Fisheries by Title
Now showing items 117-136 of 141
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Shoreline armoring disrupts marine-terrestrial connectivity across the nearshore ecotone
(2014-02-24)As the interface between land and sea, the nearshore (marine-terrestrial) ecotone converges at the intertidal zone, where the exchange of organic materials between ecosystems occurs in the form of beach wrack: piles of ... -
Size-selective mortality and environmental factors affecting early marine growth during early marine life stages of sub-yearling Chinook salmon in Puget Sound, Washington
Body size, mediated through biotic and abiotic factors affecting growth, is fundamental in determining survival as larger animals are usually less vulnerable to predation, starvation, and extreme environmental conditions ... -
Spatial and temporal patterns of fertilization in black abalone (Haliotis cracherodii Leach, 1814): Analysis of surrogate gamete spawning experiments with application towards populations on San Nicolas Island, California
(2013-11-14)The endangered black abalone (Haliotis cracherodii) suffered devastating losses along the coasts of Southern California, primarily caused by the effects of withering syndrome. Subsequent recovery may be hindered by the ... -
The spatial dimensions of fisheries: improved use of spatial information into fisheries management and information for assessments
Until relatively recently, fisheries resources were managed as single homogeneous units and fisheries management conveniently ignored the presence of spatial heterogeneity in stocks. In nature, species are neither distributed ... -
Spatial modelling for monitoring and management of marine metapopulations
(2012-09-13)Accounting for spatial complexity provides a diversity of challenges for natural resource management. Challenges arise from uncertainties in spatial stock structure, heterogeneity in environmental and ecological constraints, ... -
Spatial variability of coral reef communities: implications for conservation of benthic and herbivorous fish communities across Hawaii
Over the last two decades there has been a proliferation of reports documenting the decline of coral reef systems across the globe (Gardner et al. 2003, Bellwood et al. 2004, Cote et al. 2005, Bruno and Selig 2007). In ... -
Species diversity and environmental variability: patterns and processes of lacustrine fish community responses in a variable world
Ecosystems are heterogeneous on multiple scales of space and time, and this variation in abiotic and biotic features confronts organisms with complex challenges. Climate change signals are also often heterogeneous across ... -
Stage-structured analysis and modeling of the Pacific razor clam (Siliqua patula) in a changing environment: investigation of population dynamics and harvest strategies using process models and simulation
(1996)The Pacific Razor Clam (Siliqua patula) populations along the Washington coast have experienced massive fluctuations in abundance since the 1950s. Since the 1980s, it has been hypothesized that some of the declines in ... -
Substrate associated recruitment of juvenile Sebastes in artificial reef and natural habitats in Puget Sound and the San Juan Archipelago, Washington
(1997)Habitat pathways and temporal and spatial parameters of substrate associated recruitment have never been reported for juvenile quillback rockfish (S. maliger) in any ecosystem, and have never been described for juvenile ... -
Survival rates of coho (Oncorhynchus kisutch) and chinook salmon (O. tshawytscha) released from hatcheries on the U.S. and Canadian Pacific coast 1972–1998, with respect to climate and habitat effects
(2012-10-31)Smolt-to-adult survival rates were estimated for 18 659 coho and chinook coded wire tag (CWT) groups released in 1972–1998 from 206 hatcheries on the U.S. and Canadian Pacific coast. Survival rates of 153 wild CWT groups ... -
Temperature-induced plasticity of emergence phenotypes in Chinook salmon (Oncorhynchus tshawytscha)
Dams supply services that cultivate and sustain civilization such as flood control, navigation, and electricity. Due to thermal stratification in reservoirs the water released by dams is often a different temperature from ... -
Temporal variability and bio-physical coupling in the pelagic fauna of Monterey Bay
(2012-08-10)Temporal variability is an important feature of aquatic ecosystems that is often difficult to measure. To this end, a stationary, upward-facing scientific echosounder was used to record the vertical distribution of pelagic ... -
Toxic or Not? Modeling Pseudo-nitzschia Consumption and Domoic Acid Cycling in Washington's Intertidal Bivalves
(2013-02-25)The cosmopolitan diatom genus Pseudo-nitzschia includes a number of species that are capable of producing the neurotoxin domoic acid (DA). When blooms of toxin-producing Pseudo-nitzschia are advected over intertidal ... -
Triploid incubation and growth performance: comparison of meiotic and interploid triploid rainbow trout (Oncorhynchus mykiss) inter- and intrastrain crosses
(1990)Salmonids undergo major physiological changes during maturation critical for the reproductive success of this group; however, this also causes a marked degradation in the commercial value of the carcass. Aquaculturists ... -
Trophic transfer of nearshore basal resources: interpreting fatty acid and stable isotope biomarkers
(2013-07-25)Benthic heterotrophs living in aphotic aquatic habitats rely upon subsidies of detrital energy, in the form of complex organic molecules, which are synthesized by macrophytes and phytoplankton in the photic zone. Identifying ... -
Urban development modifies lake food webs in the Pacific Northwest
Residential shoreline and watershed development by humans are leading drivers of biodiversity loss in lake ecosystems that reduce abundances and diversity littoral invertebrates. Invertebrate biological and life history ... -
Using genetic tools to inform management and study local adaptation in Pacific salmon
Genetic analysis represents a powerful tool for informing management and studying adaptation in wild populations. For example, genetic tools can be used to delineate conservation units, assign individuals of unknown ... -
Utility and implications of no-take marine reserves in fishery management strategies
(2012-09-13)This work explores (1) the potential for using marine reserves to manage data-poor fish populations, (2) the potential for marine reserves to influence the performance of commonly used stock assessment approaches relative ...