Index Catalog // ScholarsArchive@OSU

The relationships between predatory fish, forage fishes, and juvenile salmonid marine survival off the Columbia River: a simple trophic model analysis

Creator:: Emmett, Robert L. and Sampson, David B.
Abstract:: A trophic model that simulates interactions between a predatory fish (Pacific hake, Merluccius productus), forage fish, and juvenile salmon off the Columbia River was constructed to identify if trophic interactions could account for marine mortality of Columbia River juvenile salmon. The model estimates the number of juvenile salmon that are...
Resource Type:: Research Paper
Full Text:: DAVID B. SAMPSON NOAA Fisheries Coastal Oregon Marine Experiment Station & 2030 SE Marine Science Drive

Recent pre-recruit Pacific hake (Merluccius productus) occurrences in the Northern California Current suggest a northward expansion of their spawning area

Creator:: Phillips, A. Jason, Ralston, Stephen, Brodeur, Richard D., Auth, Toby D., Emmett, Robert L., Johnson, Carrie, and Wespestad, Vidar G.
Abstract:: Coastal Pacific hake (Merluccius productus) are known to spawn in the southern California Bight from January to March, migrate north during late spring and summer to feed off Oregon, Washington, and British Columbia, and then move back to southern California in the fall. Juvenile Pacific hake nursery areas have been...
Resource Type:: Research Paper
Full Text:: hake (Merluccius productus) captured in the NOAA Fisheries, NWFSC Predator Survey off Oregon and

PNCERS 2001 Annual Report

Creator:: Pacific Northwest Coastal Ecosystems Regional Study
Resource Type:: Technical Report
Full Text:: ) and Chinook Salmon (0. tshawytscha) Released From Coastal Washington and Oregon Hatcheries 52 Arni

PNCERS 1999 annual report

Creator:: Breslow, Sara, Parrish, Julia K., and Pacific Northwest Coastal Ecosystems Regional Study
Resource Type:: Technical Report
Full Text:: - ingful results relative to natural resource management in coastal Oregon and Washington. 1999 Research

The relationships between fluctuations in oceanographic conditions, forage fishes, predatory fishes, predator food habits, and juvenile salmonid marine survival off the Columbia River

Creator:: Emmett, Robert L.
Abstract:: Salmonid run sizes are strongly affected by their early marine stage. Fully understanding the life history of salmonids means understanding how they interact with their marine environment and with other fishes. Changes in the biological and physical environment off the Columbia River region affects the distribution and abundance of predatory...
Resource Type:: Dissertation
Full Text:: ............................................................................................................. 7 Chapter 1. Recent Changes in the Pelagic Nekton Community off Oregon and Washington in Relation

Effects of Construction of an Infiltration Gallery Water Intake (Permit ID No. 00-32) on Cow Creek on Umpqua River Cutthroat Trout and Oregon Coast Coho Salmon : Biological Opinion

Creator:: National Marine Fisheries Service, Northwest Region
Abstract:: In a January 26, 2000 letter, the Portland District Army Corps of Engineers (COE) requested Endangered Species Act (ESA) Section 7 informal consultation with the National Marine Fisheries Service (NMFS) on the proposed issuance of a Clean Water Act Section 404 permit (Permit ID No. 00-32) to allow an instream...
Resource Type:: Technical Report
Full Text:: Umpqua River sea-run cutthroat trout. National Marine Fisheries Service, Coastal Zone and Estuarine

Proposed regional general permit for stream restoration : Programmatic biological opinion

Creator:: National Marine Fisheries Service, Northwest Region
Abstract:: On April 7, 2000, the National Marine Fisheries Service (NMFS) received a request from the U.S. Army Corps of Engineers, Portland District (COE) for Endangered Species Act (ESA) section 7 formal consultation for programmatic coverage for a proposed Regional General Permit (RGP) for certain stream restoration activities (habitat restoration using...
Resource Type:: Technical Report
Full Text:: . 1998. Status Report Columbia River Fish Runs and Fisheries, 1938-1997. 299 pp. PFMC (Pacific Fishery

Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers

Creator:: Johnson, Marc Aaron
Abstract:: For Pacific salmon, the evolution of local adaptations depends upon the species' propensity to return, or "home", to natal streams at time of reproduction. Pacific salmon use olfactory cues to guide homing behavior, yet little is known about the genetics of olfaction in salmon. In this study, I use putatively...
Resource Type:: Dissertation
Full Text:: on May 1, 2009. Title: Patterns of Natural Selection and Demography in Coastal Oregon Coho

Columbia River Gillnetter ; Vol. 34, No. 1 (Spring 2003)

Creator:: Columbia River Gillnetter (Columbia River Fishermen's Protective Union)
Abstract:: The Columbia River Gillnetter is the pilot of the Lower Columbia River commercial fishing industry, keeping fishermen and the public in touch with today's important issues.
Resource Type:: Journal
Full Text:: regulations to avoid additional costs each year as·the rules change. Oregon and Washington fisheries

Use of extractable lipofuscin as an age biomarker to determine age structure of ghost shrimp (Neotrypaea californiensis) populations in west coast estuaries

Creator:: Cassidy, Katelyn M.
Abstract:: Determining age in crustaceans is inherently imprecise because they molt periodically and do not retain hard structures throughout their lifespan. Morphological measurements, such as carapace length, are often used to estimate age because methods for direct ageing do not exist. However, variability in individual growth rate and molt frequency can...
Resource Type:: Masters Thesis
Full Text:: in Oregon and Washington estuaries showed growth rate varied spatially. Site-specific environmental

ScholarsArchive@OSU

The relationships between predatory fish, forage fishes, and juvenile salmonid marine survival off the Columbia River: a simple trophic model analysis

Recent pre-recruit Pacific hake (Merluccius productus) occurrences in the Northern California Current suggest a northward expansion of their spawning area

PNCERS 2001 Annual Report

PNCERS 1999 annual report

The relationships between fluctuations in oceanographic conditions, forage fishes, predatory fishes, predator food habits, and juvenile salmonid marine survival off the Columbia River

Effects of Construction of an Infiltration Gallery Water Intake (Permit ID No. 00-32) on Cow Creek on Umpqua River Cutthroat Trout and Oregon Coast Coho Salmon : Biological Opinion

Proposed regional general permit for stream restoration : Programmatic biological opinion

Patterns of natural selection and demography in coastal Oregon coho salmon (Oncorhynchus kisutch) populations : evidence from neutral and olfactory receptor gene-linked markers

Columbia River Gillnetter ; Vol. 34, No. 1 (Spring 2003)

Use of extractable lipofuscin as an age biomarker to determine age structure of ghost shrimp (Neotrypaea californiensis) populations in west coast estuaries

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