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Status of Stocks: Fisheries Interaction Team
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).
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Recent Publications, Poster Presentations, Reports & Activities |
- Fishery Interaction Team (FIT) Presentations to North Pacific Fishery Management Council (NPFMC). Online.
- Evaluating the efficacy of trawl exclusion zones by estimating local Atka mackerel abundance and movement patterns in the central and eastern Aleutian Islands.
McDERMOTT, S. F., V. HAIST, and K. M. RAND.
2016. Evaluating the efficacy of trawl exclusion zones by estimating local Atka mackerel abundance and movement patterns in the central and eastern Aleutian Islands. Mar. Coastal Fish. 8:334-349. https://dx.doi.org/10.1080/19425120.2015.1135218 Online.
- Deployment performance review of the 2015 North Pacific Groundfish and Halibut Observer Program.
FAUNCE, C., J. GASPER, J. CAHALAN, S. LOWE, S. BARBEAUX, and R. WEBSTER.
2016. Deployment performance review of the 2015 North Pacific Groundfish and Halibut Observer Program. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-322, 54 p. (.pdf, 1.8 MB). Online.
- Aleutian Islands Cooperative Acoustic Survey Study, 2007.
BARBEAUX, S. J., S. ROMAIN, E. LOGERWELL, and D. FRASER.
2016. Aleutian Islands Cooperative Acoustic Survey Study, 2007. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-319, 35 p. (.pdf, 1.2 MB). Online.
- Genetic stock composition analysis of the Chinook salmon bycatch in the Gulf of Alaska walleye pollock (Gadus chalcogrammus) trawl fisheries.
GUYON, J. R., C. M. GUTHRIE III, A. R. MUNRO, J. JASPER, and W. D. TEMPLIN. 2015. Genetic stock composition analysis of the Chinook salmon bycatch in the Gulf of Alaska walleye pollock (Gadus chalcogrammus) trawl fisheries. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-291, 26 p. (.pdf, 822 KB). Online.
- Spawning phenology and geography of Aleutian Islands and eastern Bering Sea Pacific cod (Gadus macrocephalus).
NEIDETCHER, S. K., T. P. HURST, L. CIANNELLI, and E. A. LOGERWELL.
2014. Spawning phenology and geography of Aleutian Islands and eastern Bering Sea Pacific cod (Gadus macrocephalus). Deep-Sea Res. II 109:204-214.
- Observations of seasonal movement from a single tag release group of Pacific cod in the eastern Bering Sea.
RAND, K. M., P. MUNRO, S. K. NEIDETCHER, and D. G. NICHOL.
2014. Observations of seasonal movement from a single tag release group of Pacific cod in the eastern Bering Sea. Mar. Coastal Fish. 6:287-296.
- Aspects of the reproductive biology of the North Pacific giant octopus (Enteroctopus dofleini) in the Gulf of Alaska.
CONRATH, C. L., and M. E. CONNERS.
2014. Aspects of the reproductive biology of the North Pacific giant octopus (Enteroctopus dofleini) in the Gulf of Alaska. Fish. Bull., U.S. 112:253-260. (.pdf, 1 MB). 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.
- Examining Two Epifaunal Invertebrate Communities Using Functional Traits and Environmental Variables in and Around Barrow Canyon in the Chukchi and Beaufort Seas
By: KIMBERLY RAND, ELIZABETH LOGERWELL, BODIL BLUHM, HÉLOÏSE CHENELOT, SETH DANIELSON, KATRIN IKEN, LEANDRA de SOUSA
Conference: Ocean Sciences Meeting, New Orleans, LA, Feb 2016
(2016 poster, .pdf, 1.72 MB) Online.
- Introducing the Working Group on Maturity Assessment and Reproductive Variability of Life Stages
By: SUSANNE McDERMOTT, SANDI NEIDETCHER, CHRISTINA CONRATH, PAUL SPENCER
Conference: Western Groundfish Conference (19th), Newport, OR, Feb 2016
(2016 poster, .pdf, 1.85 MB) Online.
- The Use of Image-analysis Software in Evaluating Spawning Strategy and Fecundity Rates of Walleye Pollock, Gadus chalcogrammus
By: SANDI NEIDETCHER, KALI TURNER, BEN WILLIAMS
Conference: Western Groundfish Conference (19th), Newport, OR, Feb 2016
(2016 poster, .pdf, 1.56 MB) Online.
- Discard Mortality of Octopus in Alaskan Commercial Fisheries
By: M. ELIZABETH CONNERS, MIKE LEVINE
Conference: Western Groundfish Conference (19th), Newport, OR, Feb 2016
(2016 poster, .pdf, 6.47 MB) Online.
- Local Abundance and Movement of Atka Mackerel and Other Steller Sea Lion Prey in the Aleutian Islands
By: SUSANNE F. McDERMOTT, MIKE LEVINE, KIMBERLY RAND, ELIZABETH LOGERWELL, TODD LOOMIS
Conference: Alaska Marine Science Symposium, Anchorage, AK, Jan 2016
(2016 poster, .pdf, 866 KB) Online.
- Opportunistic Use of a Towed Stereo Video System Taking Advantage of Pre-existing Platforms During Atka Mackerel Tagging Research
By: MIKE LEVINE, ISABEL JUSTINIANO, SUSANNE F. McDERMOTT
Conference: American Fisheries Society, 145th Annual Meeting, Portland, OR, Aug 2015
(2015 poster, .pdf, 6.17 MB) Online.
- Cooperative Multi-Species Surveys in the Aleutian Islands
By: STEVEN J. BARBEAUX, DAVE FRASER, LOWELL FRITZ, ELIZABETH LOGERWELL
Conference: ICES Symposium on Marine Ecosystem Acoustics, Nantes, France, May 2015
(2015 poster, .pdf, 16.14 MB) Online.
- Summer Zoogeography of the Northern Bering and Chukchi Seas
By: MIKE SIGLER, FRANZ MUETER, BODIL BLUHM, MORGAN BUSBY, NED COKELET, SETH DANIELSON, ALEX De ROBERTIS, LISA EISNER, ED FARLEY, KATRIN IKEN, KATHY KULETZ, BOB LAUTH, LIBBY LOGERWELL, ALEXEI PINCHUK, CHRIS WILSON
Conference: Alaska Marine Science Symposium, Anchorage, AK, Jan 2015
(2015 poster, .pdf, 805 KB) Online.
- SHELFZ Project: Benthic Invertebrates From Nearshore to Offshore in and Around Barrow Canyon in the Northeastern Chukchi Sea
By: KIMBERLY RAND, ELIZABETH LOGERWELL, SETH DANIELSON, LEANDRA SOUSA
Conference: Alaska Marine Science Symposium, Anchorage, AK, Jan 2015
(2015 poster, .pdf, 3.82 MB) Online.
- Observations of Seasonal Movement From a Single Tag Release Group of Pacific Cod in the Eastern Bering Sea
By: KIMBERLY RAND, PETER MUNRO, SANDI NEIDETCHER, DANIEL NICHOL
Conference: Alaska Marine Science Symposium, Anchorage, AK, Jan 2015
(2015 poster, .pdf, 3.75 MB) Online.
See the publications and poster databases for additional listings.
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