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Filtering by: Creator Majek, Bradley A. Remove constraint Creator: Majek, Bradley A. Non-Academic Affiliation Hatfield Marine Science Center Remove constraint Non-Academic Affiliation: Hatfield Marine Science Center Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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State of the California Current 2010-2011: Regionally Variable Responses to a Strong (But Fleeting?) La Nina

Creator:

Bjorkstedt, Eric P., Goericke, Ralf, McClatchie, Sam, Weber, Ed, Watson, William, Lo, Nancy, Peterson, Bill, Emmett, Bob, Brodeur, Ric, Peterson, Jay, Litz, Marisa, Gomez-Valdez, Jose, Gaxiola-Castro, Gilberto, Lavaniegos, Bertha, Chavez, Francisco, Collins, Curtis A., Field, John, Sakuma, Keith, Warzybok, Pete, Bradley, Russell, Jahncke, Jaime, Bograd, Steven, Schwing, Franklin, Campbell, Gregory S., Hildebrand, John, Sydeman, William, Thompson, Sarah Ann, Largier, John L., Halle, Chris, Kim, Sung Yong, and Abell, Jeffrey

Abstract:

The state of the California Current system (CCS) since spring 2010 has evolved in response to the development of cooler La Nina following the dissipation of the relatively weak and short-lived El Nino event of 2009-2010. The 2009-2010 El Nino appears to have dissipated quite rapidly in early spring 2010,...

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Article

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: regionally variable reSponSeS to a Strong (but fleeting?) la niña Eric P. BjorkstEdt NoAA Fisheries service
Climate shifts the interaction web of a marine plankton community

Creator:

Francis, Tessa B., Scheuerell, Mark D., Brodeur, Richard D., Levin, Phillip S., Ruzicka, James J., Tolimieri, Nick, and Peterson, William T.

Abstract:

Climatic effects in the ocean at the community level are poorly described, yet accurate predictions about ecosystem responses to changing environmental conditions rely on understanding biotic responses in a food-web context to support knowledge about direct biotic responses to the physical environment. Here we conduct time-series analyses with multivariate autoregressive...

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Article

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gcb_2702 2498..2508 Climate shifts the interaction web of a
Winter ichthyoplankton biomass as a predictor of early summer prey fields and survival of juvenile salmon in the northern California Current

Creator:

Daly, Elizabeth A., Auth, Toby D., Brodeur, Richard D., and Peterson, William T.

Abstract:

Diets of juvenile coho Oncorhynchus kisutch and Chinook O. tshawytscha salmon are made up primarily of winter-spawning fish taxa in the late-larval and early juvenile stages that are undersampled in plankton and larger trawl nets. Although we have no direct measure of the availability of fish prey important to juvenile...

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Article

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fresh- water as adults (Pearcy 1992). A link between early marine survival of salmon and physical ocean
Linking predators to seasonality of upwelling: Using food web indicators and path analysis to infer trophic connections

Creator:

Thompson, Sarah Ann, Sydeman, William J., Santora, Jarrod A., Black, Bryan A., Suryan, Robert M., Calambokidis, John, Peterson, William T., and Bograd, Steven J.

Abstract:

Upwelling in eastern boundary current systems is a primary driver of ecosystem productivity. Typically, peak upwelling occurs during spring and summer, but winter upwelling may also be important to ecosystem functions. In this study, we investigated the hypothesis that winter and spring/summer upwelling, operating through indirect trophic interactions, are important...

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Article

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: Using food web indicators and path analysis to infer trophic connections Sarah Ann Thompson a
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...

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Research Paper

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) OCCURRENCES IN THE NORTHERN CALIFORNIA CURRENT SUGGEST A NORTHWARD EXPANSION OF THEIR SPAWNING AREA A
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...

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Research Paper

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JUVENILE SALMONID MARINE SURVIVAL OFF THE COLUMBIA RIVER: A SIMPLE TROPHIC MODEL ANALYSIS ROBERT L. EMMETT
Detailed Morphology and Structure of an Active Submarine Arc Caldera: Brothers Volcano, Kermadec Arc

Creator:

Embley, R. W., de Ronde, C. E. J., Merle, S. G., Davy, B., and Tontini, F. Caratobi

Abstract:

A survey of the Brothers caldera volcano (Kermadec arc) with the autonomous underwater vehicle ABE has revealed new details of the morphology and structure of this submarine frontal arc caldera and the geologic setting of its hydrothermal activity. Brothers volcano has formed between major SW-NE–trending faults within the extensional field...

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University, 2115 SE 0.S. U. Dr., Newport, Oregon 97365-5258 Abstract A survey of the Brothers caldera
Acoustics variability of air gun signals recorded at intermediate ranges within the Lau Basin

Creator:

Bohnenstiehl, DelWayne R., Scheip, Corey M., Matsumoto, Haru, and Dziak, Robert P.

Abstract:

During January–February 2009, an active-source seismic survey was performed over the Eastern Lau Spreading Center in the Lau Back-Arc Basin (21°S, 176°S). Acoustic signals generated by the R/V Langseth's 36-gun pneumatic source array were recorded within the deep sound channel at offsets of 29–416 km. The local ocean acoustic environment...

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to exceed the predictions of a geometric spherical spreading model. At similar ranges, arrival
Sounds from airguns and fin whales recorded in the mid-Atlantic Ocean, 1999-2009

Creator:

Nieukirk, Sharon L., Mellinger, David K., Moore, Sue E., Klinck, Karolin, Dziak, Robert P., and Goslin, Jean

Abstract:

Between 1999 and 2009, autonomous hydrophones were deployed to monitor seismic activity from 16° N to 50° N along the Mid-Atlantic Ridge. These data were examined for airgun sounds produced during offshore surveys for oil and gas deposits, as well as the 20 Hz pulse sounds from fin whales, which may...

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months, a time when airgun noise was often prevalent. Seismic survey vessels were acoustically located
Beached birds and physical forcing in the California Current System

Creator:

Parrish, Julia K., Bond, Nicholas, Nevins, Hannah, Mantua, Nathan, Loeffel, Robert, Peterson, William T., and Harvey, James T.

Abstract:

Seabirds have often been proposed as environmental indicators. Beached bird data may provide an additional data source and such data is efficacious because it can reliably be collected by volunteers. In addition to anthropogenic factors, such as oil spills, changes in the ocean-atmosphere can affect carcass beaching rate in 3...

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Article

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. Practically, this is too expensive, with the result that worldwide only a handful of colony sites have long

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Peterson, William T.4
Brodeur, Richard D.3
Hatfield Marine Science Center3
Auth, Toby D.2
Dziak, Robert P.2
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Current results range from 1986 to 2013

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Hatfield Marine Science Center[remove]15

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Fishery management -- Oregon -- Umpqua River Watershed1
Hatfield Marine Science Center1
Marine sciences1

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