Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Pollock everywhere!!

Jul 23, 2013 | Gulf of Alaska Project | 0 comments

Wyatt Fournier


As I mentioned in my first post, every year we observe something a little different out here in the Gulf of Alaska.  For the past few weeks we have been catching more Young Of the Year (YOY) Walleye pollock than on any previous survey.  Almost every time we haul the net back there are pollock, both at the surface and at depths up to 100 meters and deeper.  At the same time there has been a relatively low abundance of juvenile rockfish and arrowtooth flounder and no signs of Pacific cod or sablefish.

Our local climate has also been different this year as we experienced a prolonged cold spring that kept the snow pack in the mountains and the ocean temps cool.  Then in June, the state of Alaska had a mini-heat wave that melted snow and had locals peeling off clothing.  The cold spring kept the streams and rivers cool and may have delayed the development of smolting salmon and would explain why we have caught very few pink and chum salmon on this survey despite the warm weather this month. 

These temperature swings that we enjoy here on land are also taking place in the ocean and can influence reproduction timing and survival of marine fish.  It is possible that the ocean conditions and prey availability this spring were optimal for juvenile pollock survival but not as beneficial for other species.   Our physical and biological oceanography observations conducted on this survey will help us answer some of these unknowns as we investigate the mechanisms between climate variability and juvenile marine fish survival.  


https://www.nprb.org/assets/images/uploads/blog/Blog+7.17.13.jpg

0 Comments

Submit a Comment

Your email address will not be published.

Recent Comments

    WHo we are
    GENERAL INFO

    Established in 2001, NPRB is a marine research organization that supports pressing fishery management issues or marine ecosystem needs.

    REPORTS & PUBLICATIONS

    More than 600 peer-reviewed publications have been produced through NPRB-funded research. Browse our library and our reports here.

    LEADERSHIP

    NPRB comprises a 20 member Board, representing Federal, State, and other entitites while receiving advice from Science and Advisory Panels.

    PARTNERSHIPS

    Looking to partner with NPRB? NPRB welcomes partnerships to co-fund research in areas of common interest and across its programs.

    OUTREACH & ENGAGEMENT

    NPRB communicates and engages with a broad and diverse set of Alaskan stakeholders and audiences, from coastal communities to academia.

    STAFF

    NPRB staff support the Board, Science, and Advisory Panels for funding decisions, science priorities, recommendations, and program management.

    Funding Available

    The Core Program offers year-round funding with flexible rolling submission options.

    SUBMIT YOUR RESEARCH PRIORITIES

    NPRB staff begins developing draft research priorities for the Core Program in late July and August. Submit before July 2nd to be considered for the current year’s RFP development. 

    Our Programs
    INTEGRATED ECOSYSTEM PROGRAMS
    SCIENCE FOUNDATION

    NPRB maintains scientific programs designed to address pressing fishery management issues and Alaska marine ecosystem information needs.

    CORE PROGRAM

    NPRB supports a competitive, peer-reviewed annual request for proposal (RFP) process dedicated to marine research in Alaskan waters.

    The Arctic Integrated Ecosystem Reserach Program looked at how physical changes in the ocean influence the flow of energy through the marine food web in the Bering Strait, Chukchi Sea, and western Beaufort Sea from 2017-2021.

    OUTREACH PROGRAM

    Supporting science communication, engagement, outreach, and education initiatives for all our research programs.

    LONG-TERM MONITORING

    This program supports new or existing time-series research that enhance the ability to understand the current state of marine ecosystems.

    The Bering Sea Project, a partnership between the North Pacific Research Board and the National Science Foundation, sought to understand the impacts of climate change and dynamic sea ice cover on the eastern Bering Sea ecosystem.

    INTEGRATED ECOSYSTEM RESEARCH

    These are large-scale interdisciplinary ecosystem-based programs, requiring multiple agency coordination, collaboration, and investigation.

    GRADUATE STUDENT RESEARCH AWARDS

    NPRB supports next generation scientists, researchers, and resource managers to further their studies in relevant fields of marine science and to our mission.

    The Gulf of Alaska Project tested three main hypotheses about the survival and recruitment of five focal groundfish species (Pacific cod, Pacific ocean perch, walleye pollock, arrowtooth flounder, sablefish) during their first year of life.

    About NPRB
    • Menu Item 1
    • Menu Item 2
    • Menu Item 3
    • Menu Item 4
    • Menu Item 5
    • Menu Item 6
    • Menu Item 7

    Title Goes Here

    Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the

    Title Goes Here

    Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the