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Status of Stocks: Fisheries Interaction Team

REFM Home
Status of Stocks
Fisheries Interaction
Research Projects
  Atka mackerel
      Tagging       Food Habits
  Beaufort Sea
  Pacific cod
      Pot study       Maturity
  Walleye pollock
      Interactions       Aleutian Coop
Publications
Posters
Cruise Reports
 
tagged cod cod holding tank tagged Atka in tank

In late 2000 the Fishery Interaction Team (FIT) was formed to investigate the effects of commercial fishing on top trophic level consumers.  Members of the team are currently conducting studies to determine whether commercial fishing operations are capable of impacting the foraging success of Steller sea lions either through disturbance of prey schools or through direct competition for a common prey.  The present research focus is on the three major groundfish prey of sea lions: walleye pollock, Pacific cod and Atka mackerel.

FIT investigates the potential effects of commercial fishing on sea lion prey fields in two ways.  First, by conducting field studies to directly examine the impact of fishing on sea lion prey fields and to evaluate the efficacy of trawl exclusion zones.  The impetus for this work is to evaluate the hypothesis that commercial fishing may reduce the the availability of prey in localized areas.  The home range of a foraging Steller sea lion could be considered a localized area.  A reduction in prey availability may result from a reduction in prey abundance and/or a disruption in the spatial patterns of sea lion prey.  Since 2000 FIT has been conducting field studies to examine the impact of fishing on sea lion prey fields in all three major Alaska regions: the Gulf of Alaska, Bering Sea, and Aleutian Islands. 

The second way that FIT investigates the potential effects of commercial fishing on sea lion prey is by studying fish abundance, distribution, behavior and life history at spatial scales relevant to sea lion foraging (tens of nautical miles).  This scale is much smaller than the spatial scales at which groundfish population dynamics are usually studied and at which stocks are assessed.  This information is needed to construct a localized, spatially-explicit model of sea lion prey field dynamics that can be used to predict spatial and temporal shifts in the distribution and abundance of sea lion prey and potential effects of fishing on these prey fields.  Studies of fish movement are a critical first step toward developing such a model.  For example, regulations that assume fish remain stationary may not be effective if small-scale fish distributions are fluid.  Likewise, localized consequences of fishing may be rendered undetectable using methods that assume that fish are stationary in time and place.  Studies of fish reproductive dynamics are needed to assess variability in spawning condition over space and time and thus to improve our understanding of the processes underlying fish movement.  In addition, spawning condition effects the nutritional value of prey seasonally.  Fish food habits and growth are also important components of a model of sea lion prey field dynamics.  FIT scientists thus are engaged in several studies of local fish ecology (e.g., movement, reproduction, and feeding). 

Contact

If you have any questions about FIT, please contact team leader Libby Logerwell (libby.logerwell@noaa.gov
or 1-206-526-4231).

Recent Publications, Poster Presentations, Reports & Activities

  • Fishery Interaction Team (FIT) Presentations to North Pacific Fishery Management Council (NPFMC). Online.

  • Marine fishes, birds and mammals as sentinels of ecosystem variability and reorganization in the Pacific Arctic region
    MOORE, S. E., E. A. LOGERWELL, L. EISNER, E. V. FARLEY, Jr., L. A. HARWOOD, K. KULETZ, J. LOVVORN, J. R. MURPHY, and L. T. QUAKENBUSH. 2014. Marine fishes, birds and mammals as sentinels of ecosystem variability and reorganization in the Pacific Arctic region, p. 337-392. In J. M. Grebmeier and W. Maslowski (editors), The Pacific Arctic Region: Ecosystem Status and Trends in a Rapidly Changing Environment. Springer, Dordrecht. 
     
  • A novel approach for estimating location and scale specific fishing exploitation rates of eastern Bering Sea walleye pollock (Theragra chalcogramma).
    BARBEAUX, S. J., J. K. HORNE, and J. N. IANELLI. 2014. A novel approach for estimating location and scale specific fishing exploitation rates of eastern Bering Sea walleye pollock (Theragra chalcogramma). Fish. Res. 153:69-82. 
     
  • Characterizing walleye pollock (Theragra chalcogramma) winter distribution from opportunistic acoustic data.
    BARBEAUX, S. J., J. K. HORNE, and M. W. DORN. 2013. Characterizing walleye pollock (Theragra chalcogramma) winter distribution from opportunistic acoustic data. ICES J. Mar. Sci. 70:1162-1173.  
     
  • The diets of polar cod (Boreogadus saida) from August 2008 in the U.S. Beaufort Sea.
    RAND, K. M., A. WHITEHOUSE, E. A. LOGERWELL, E. AHGEAK, R. HIBPSHMAN, and S. PARKER-STETTER. 2013. The diets of polar cod (Boreogadus saida) from August 2008 in the U.S. Beaufort Sea. Polar Biol. 36:907–912. 
     
  • Status review of the ribbon seal (Histriophoca fasciata).
    BOVENG, P. L., J. L. BENGTSON, M. F. CAMERON, S. P. DAHLE, E. A. LOGERWELL, J. M. LONDON, J. E. OVERLAND, J. T. STERLING, D. E. STEVENSON, B. L. TAYLOR, and H. L. ZIEL. 2013. Status review of the ribbon seal (Histriophoca fasciata). U. S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-255, 174 p. (.pdf, 9.11 MB).  Online.
     
  • Winter observations of a group of female and immature sperm whales in the high-latitude waters near the Aleutian Islands, Alaska.
    FEARNBACH, H., J. W. DURBAN, S. A. MIZROCH, S. BARBEAUX, and P. R. WADE. 2012. Winter observations of a group of female and immature sperm whales in the high-latitude waters near the Aleutian Islands, Alaska. Mar. Biodiversity Rec. Vol. 5, e13, 4 p. 
     
  • An atlas of reproductive development in rockfishes, genus Sebastes.
    SHAW, F. R., J. F. MORADO, V. C. LOWE, and S. F. McDERMOTT. 2012. An atlas of reproductive development in rockfishes, genus Sebastes. NOAA Professional Paper NMFS 14, 77 p. (.pdf, 35.1 MB).  Online.
     
  • Effects of climate variations on pelagic ocean habitats and their role in structuring forage fish distributions in the Bering Sea.
    HOLLOWED A. B., S. J. BARBEAUX, E. D. COKELET, S. KOTWICKI, P. H. RESSLER, C. SPITAL, and C. D. WILSON. 2012. Effects of climate variations on pelagic ocean habitats and their role in structuring forage fish distributions in the Bering Sea. Deep-Sea Res. II 65-70:230-250. 
     
  • Investigation of fishing and climate effects on the community size spectra of eastern Bering Sea fish.
    BOLDT, J. L., S. C. BARTKIW, P. A. LIVINGSTON, G. R. HOFF, and G. E. WALTERS. 2012. Investigation of fishing and climate effects on the community size spectra of eastern Bering Sea fish. Trans. Am. Fish. Soc. 141:327-342. 
     
  • Oceanographic characteristics of the habitat of benthic fish and invertebrates in the Beaufort Sea.
    LOGERWELL, E. A., K. RAND, and T. J. WEINGARTNER. 2011. Oceanographic characteristics of the habitat of benthic fish and invertebrates in the Beaufort Sea. Polar Biol. 34:1783-1796. 
     
  • Discard Mortality Studies for the Giant Pacific Octopus, Enteroctopus dofleini, in Alaska Waters
    By:  CHRISTINA L. CONRATH, M. ELIZABETH CONNERS, MICHAEL LEVINE
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, 4.37 MB)   Online.

     
  • Local Abundance and Movement of Atka Mackerel and Other Steller Sea Lion Prey in the Aleutian Islands (2014 version)
    By:  SUSANNE F. McDERMOTT, KIMBERLY RAND, ELIZABETH LOGERWELL, TODD LOOMIS
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2014
    (2014 poster, .pdf, 3.87 MB)   Online.

     
  • Designing and Implementing Annual Catch Limits for North Pacific Groundfish and Crab Stocks
    By:  PAT LIVINGSTON, GRANT THOMPSON, JACK TURNOCK, KERIM AYDIN, LIZ CONNERS, PAUL SPENCER, OLAV ORMSETH
    Conference:  Managing Our Nation's Fisheries 3 Conference, Washington, D.C., May 2013
    (2013 poster, .pdf, 2.21 MB)   Online.

     
  • Observer-Assessed Reproductive Maturity Use in Ecosystem Based Fisheries Management
    By:  SANDI NEIDETCHER
    Conference:  International Fisheries Observer & Monitoring Conference (7th), Viña del Mar, Chile, April 2013
    (2013 poster, .pdf, 1.71 MB)   Online.

     
  • Nearshore Fish Sampling in the Gulf of Alaska Using a Small Purse Seine
    By:  OLAV A. ORMSETH, KIMBERLY M. RAND
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2013
    (2013 poster, .pdf, 2.48 MB)   Online.

     
  • Small-Scale Oceanography of the Inshore Gulf of Alaska in 2011: an Element of the Gulf of Alaska Integrated Ecosystem Research Program
    By:  OLAV A. ORMSETH, KIMBERLY M. RAND
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2013
    (2013 poster, .pdf, 2.51 MB)   Online.

     
  • Seasonal Distribution and Relative Abundance of Steller Sea Lion Prey in the Aleutian Islands
    By:  SUSANNE F. McDERMOTT, KIMBERLY R. RAND, ELIZABETH A. LOGERWELL, TODD M. LOOMIS
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2013
    (2013 poster, .pdf, 2.07 MB)   Online.

     
  • Spatial and Temporal Reproductive Patterns in Walleye Pollock (Theragra chalcogramma) in the Bering Sea
    By:  TOM HOLLAND, SANDI NEIDETCHER
    Conference:  Western Groundfish Conference (17th), Seattle, WA., Feb 2012
    (2012 poster, .pdf, 8 MB)   Online.

     
  • Local Abundance and Movement of Atka Mackerel and Other Steller Sea Lion Prey in the Aleutian Islands
    By:  SUZANNE F. McDERMOTT, ELIZABETH LOGERWELL, KIMBERLY RAND, LYNN LEE
    Conference:  Western Groundfish Conference (17th), Seattle, WA., Feb 2012
    (2012 poster, .pdf, 19 MB)   Online.

     
  • New Management in Alaska – Octopus!
    By:  M. ELIZABETH CONNERS, CHRISTINA CONRATH
    Conference:  Alaska Marine Science Symposium, Anchorage, AK, Jan 2011
    (2011 poster, .pdf, 1.1 MB)   Online.

     

 

See the publications and poster databases for additional listings.

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