Results 81 to 90 of about 8,700 (238)
ABSTRACT West Coast Transient (WCT) killer whales (Orcinus orca rectipinnus) hunt marine mammals along the west coast of North America from California to southeastern Alaska. However, little information is available on their seasonal use of nearshore areas and the relative importance of different parts of their range.
Taryn M. Scarff +2 more
wiley +1 more source
Geographical Distribution and Seasonal Occurrence of Myxobolus kisutchi (myxozoa: myxosporea) in the Central Nerve Tissues of Chinook and Coho salmon in the Columbia River and Its Vicinities [PDF]
マスノスケとギンザケの延髄や脊髄神経に寄生する粘液胞子虫類Myxobolus kisuchiの分布と寄生率の季節変化を北アメリカ北西域で調べた。この粘液胞子虫はコロンビア川と周辺域(ワシントン州のMiner CreekとChehalis川)の限られた水域で発生し、他の北米やアジアの主要なマスノスケ河川個体群ではみられなかった。コロンビア川のMcNaryダムを通過するマスノスケスモルトにおけるM.kisuchiの寄生率は、5月(春タイプ)に20-37%で、6月(主に秋タイプ)は1.3-1.7%に減少し ...
Mahnken, Conrad.W. +5 more
core
This study examined variations in the egg size of wild‐caught and captive broodstock (created from the direct offspring of wild‐caught) brown trout (Salmo trutta) from three peri‐Alpine lakes (Lake Constance, Lake Lucerne and Lake Zurich). It showed that there was lake‐specific variation in egg size between the two groups of trout.
Kunio Takatsu +2 more
wiley +1 more source
In the western United States, the long-term recovery of many Pacific salmon populations is inextricably linked to freshwater habitat quality. Industrial activities from the past century have left a legacy of pollutants that persist, particularly near ...
Jessica I Lundin +8 more
doaj +1 more source
This paper tailors adaptive capacity understanding for North American freshwater fishes, mussels, and crayfishes by integrating trait‐based approaches to provide practical guidance for improving management and conservation decisions under global change.
H. S. Embke +21 more
wiley +1 more source
This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Title from PDF title page (viewed on Apr.
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A depth model for informing Chinook salmon bycatch risk in the Gulf of Alaska
Background Bycatch of Chinook salmon (Oncorhynchus tshawytscha) in the Gulf of Alaska walleye pollock (Gadus chalcogrammus) fishery poses both conservation and management challenges. While fleet communication and excluder devices have improved mitigation
Marcel Gietzmann-Sanders +3 more
doaj +1 more source
A Tool for Prioritizing Gravel Augmentation Reaches for Sediment Starved Rivers
ABSTRACT Gravel augmentation is a widely used restoration technique used to improve habitat below dams, including salmonids spawning habitat. However, gravel augmentation can be cost‐prohibitive, and it is often unclear which stream segments have the highest potential to benefit spawning salmonids.
Patricia J. Wohner +2 more
wiley +1 more source
This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Title from PDF title page (viewed on Apr.
core
Chinook salmon adult return data.
Spring Chinook salmon counts at Bonneville Dam from Jan 1st through Jun 15th adjusted by estimated lower river harvest (wdfw.wa.gov/fishing/cre/staff_reports.html), counts at Ice Harbor Dam from Jan 1st through Aug 11th, and counts at Priest Rapids Dam ...
William T. Peterson (289374) +5 more
core +1 more source

