Table of Contents

• Dataset Description
  • Data Processing Description
• Data Files
• Parameters
• Instruments
• Deployments
• Project Information
• Program Information
• Funding

These data are related to Trawl Catch data found here. Please see these data for details about trawls.

Notes from the PI:
How I classified salmon (according to information from Nancy Davis and from looking at her high seas catch (lengths and ages) data [reference pending]):

coho <375mm = juvenile

coho >375mm = maturing

pink <375mm = juvenile

pink >375mm = maturing

The categories for sockeye, chinook, and chum are more difficult to determine and are based on length frequencies as well as age/length data from the high seas cruise Nancy Davis goes on. [reference pending]

sockeye <235mm = juvenile

sockeye >235mm = immature/maturing

The minimum fork length of a sockeye (ocean age 1) was 231mm in Nancy Davis' high seas data (2001) [reference pending]; most were ~300mm

chinook>300mm = immature/maturing

chum<270mm = juvenile

chum>270mm = immature/maturing

The minimum fork length of a chum (ocean age 1) was 280mm in Nancy Davis' high seas data (2001)[reference pending]; most were ~300-350mm

Questions about these data should be directed to:
Jack Piccolo
UAF / SFOS
11120 Glacier Highway
Juneau, AK 99801
ftjjp1@uaf.edu
Phone: 907-796-2055

Program in a Nutshell

Goal: To understand the effects of climate variability and climate change on the distribution, abundance and production of marine animals (including commercially important living marine resources) in the eastern North Pacific. To embody this understanding in diagnostic and prognostic ecosystem models, capable of capturing the ecosystem response to major climatic fluctuations.

Approach: To study the effects of past and present climate variability on the population ecology and population dynamics of marine biota and living marine resources, and to use this information as a proxy for how the ecosystems of the eastern North Pacific may respond to future global climate change. The strong temporal variability in the physical and biological signals of the NEP will be used to examine the biophysical mechanisms through which zooplankton and salmon populations respond to physical forcing and biological interactions in the coastal regions of the two gyres. Annual and interannual variability will be studied directly through long-term observations and detailed process studies; variability at longer time scales will be examined through retrospective analysis of directly measured and proxy data. Coupled biophysical models of the ecosystems of these regions will be developed and tested using the process studies and data collected from the long-term observation programs, then further tested and improved by hindcasting selected retrospective data series.

U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.

The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).