Incidental Catch of Marine Birds in the North Pacific High Seas Driftnet Fisheries in 1990.
Entry ID: usgs_npwrc_incidentalmarinecatc

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Summary
Abstract: The incidental take of marine birds was estimated for the following North
Pacific driftnet fisheries in 1990: Japanese squid, Japanese large-mesh, Korean
squid, and Taiwanese squid and large-mesh combined. The take was estimated by
assuming that the data represented a random sample from an unstratified
population of all driftnet fisheries in the North Pacific. Estimates for 13
species or species groups are presented, along with some discussion of
inadequacies of the design. About 416,000 marine birds were estimated to be
taken incidentally during the 1990 season; 80 % of these were in the Japanese
squid fishery. Sooty Shearwaters, Short-tailed Shearwaters, and Laysan
Albatrosses were the most common species in the bycatch.

Regression models were also developed to explore the relations between bycatch
rate of three groups Black-footed Albatross, Laysan Albatross, and "dark"
shearwatersand various explanatory variables, such as latitude, longitude,
month, vessel, sea surface temperature, and net soak time (length of time nets
were in the water). This was done for only the Japanese squid fishery, for
which the most complete information was available. For modeling purposes,
fishing operations for each vessel were grouped into 5-degree blocks of
latitude and longitude.

Results of model building indicated that vessel had a significant influence on
bycatch rates of all three groups. This finding emphasizes the importance of
the sample of vessels being representative of the entire fleet. In addition,
bycatch rates of all three groups varied spatially and temporally. Bycatch
rates for Laysan Albatrosses tended to decline during the fishing season,
whereas those for Black-footed Albatrosses and dark shearwaters tended to
increase as the season progressed. Bycatch rates were positively related to net
soak time for Laysan Albatrosses and dark shearwaters. Bycatch rates of dark
shearwaters were lower for higher sea surface temperatures.

Related URL
Link: GET DATA
Description: Incidental Catch of Marine Birds in the North Pacific High Seas Driftnet
Fisheries in 1990 data


Geographic Coverage
 N: 50.0 S: 20.0  E: 140.0  W: -140.0

Data Set Citation
Dataset Originator/Creator: Douglas H. Johnson, Terry L. Shaffer, and Patrick J. Gould
Dataset Title: Incidental Catch of Marine Birds in the North Pacific High Seas Driftnet Fisheries in 1990
Dataset Release Date: 1990
Dataset Release Place: Jamestown, North Dakota
Dataset Publisher: USGS, Northern Prairie Wildlife Research Center
Version: Version 11APR2001
Online Resource: http://www.npwrc.usgs.gov/resource/birds/icatch/index.htm


Temporal Coverage
Start Date: 1990-01-01
Stop Date: 1990-01-01


Location Keywords
OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN


Science Keywords
AGRICULTURE >AGRICULTURAL AQUATIC SCIENCES >FISHERIES    [Definition]
OCEANS >AQUATIC SCIENCES >FISHERIES    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >BIRDS    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >FISH    [Definition]


ISO Topic Category
FARMING
BIOTA
ECONOMY


Access Constraints
None


Use Constraints
None


Keywords
incidental take
marine birds
Japanese squid
Japanese large-mesh
Korean squid
Taiwanese squid
Black-footed Albatross
Laysan Albatross
"dark" shearwaters


Data Set Progress
COMPLETE


Data Center
Northern Prairie Wildlife Research Center, Biological Resources Division, U.S. Geological Survey, U.S. Department of the Interior    [Information]
Data Center URL: http://www.npwrc.usgs.gov/

Data Center Personnel
Name: TOM SKLEBAR
Phone: 701-253-5500
Phone: 701-253-5554
Fax: 701-253-5553
Email: tom_sklebar at usgs.gov
Contact Address:
8711 37th Street, S.E.
City: Jamestown
Province or State: North Dakota
Postal Code: 58401
Country: USA



Distribution
Distribution_Media: FTP
Distribution_Size: 26 K bytes
Distribution_Format: zip
Fees: none


Personnel
DOUGLAS H. JOHNSON
Role: TECHNICAL CONTACT
Phone: (701) 253-5539, (701) 253-5553
Email: Douglas_Johnson at usgs.gov
Contact Address:
U.S. Geological Survey
Biological Resources Division
Northern Prairie Wildlife Research Center
8711 37th Street SE
City: Jamestown
Province or State: North Dakota
Postal Code: 58401-7317
Country: USA


TYLER B. STEVENS
Role: DIF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Johnson, Douglas H., Terry L. Shaffer, and Patrick J. Gould. 1993. Incidental catch of marine birds in the North Pacific high seas driftnet fisheries in 1990. International North Pacific Fisheries Commission Bulletin 53:473-483. http://www.npwrc.usgs.gov/resource/birds/icatch/index.htm

Creation and Review Dates
DIF Creation Date: 2002-01-28
Last DIF Revision Date: 2012-12-21
Future DIF Review Date: 2003-01-28

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