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A Bird’s Eye View of Fisheries Discharge in Alaskan Waters Ann Edwards, PhD Shannon Fitzgerald Alaska Fisheries Science Center – NOAA Seattle, WA. Questions of Interest : - PowerPoint PPT Presentation
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A Bird’s Eye View of Fisheries A Bird’s Eye View of Fisheries Discharge in Alaskan WatersDischarge in Alaskan Waters
Ann Edwards, PhD Shannon Fitzgerald
Alaska Fisheries Science Center – NOAA Seattle, WA
Questions of Interest:
All questions refer to characteristics of the biomass made available to birds by the Alaskan Groundfish Fishery (BSAI + GOA).
۞ -- Quantity?
From which fisheries, and which processing methods?
۞ -- Characteristics?
Whole, Macerated, Fishmeal
-- Spatial Distribution?
-- Energetic Content?
-- Consumption Rates by Birds?
METHODS
NOAA Regional Databases:
Catch Accounting System Database Products Database 2003-3004: All data are presented Annually
Data for each Gear Type and Species:
Round Wt Landed Wt Primary Product Wt Ancillary Product Wt
Product Recovery Rates
Midwater Pollock Trawl
Bottom Trawl
Longline
0
100,000
200,000
300,000
400,000
500,000
600,000
WholeH &G
FilletSurimi
MinceMeal
Whole Discards
YSOL
RSOL
POPA
PLCK
PCOD
FSOL
ROCKOTHR
ARTH
AMCK
Round W
eig
ht
(mt)
Primary Products Produced At-Sea
2004
0
100,000
200,000
300,000
400,000
500,000
600,000
WholeH&G
FilletSurimi
MinceMeal
Whole Discards
Rou
nd W
t. (
mt)
Midwater Pollock Trawl
Bottom Trawl
Longline
Primary Products Produced At-Sea
2004
Total Catch
Discarded Catch
OffalRetained
Catch
Market
Final Products
AT-SEA CATCHER / PROCESSOR
AT-SEA SHORESIDE
Total Catch
Discarded Catch
Macerated Whole Fish
Whole Fish
Fishmeal Plant
Lost Fish
AT-SEA CATCHER / PROCESSOR
AT-SEA SHORESIDE
OffalRetained
Catch
Unmacerated Offal
Macerated Offal
Fishmeal Plant
Final Product
AT-SEA CATCHER / PROCESSOR
AT-SEA SHORESIDE
Total Catch
Discarded Catch
OffalRetained
Catch
Final Products
AT-SEA CATCHER / PROCESSOR
AT-SEA SHORESIDE
0
100,000
200,000
300,000
400,000
500,000
600,000
WholeParts
met
ric
ton
s -
wet
wt.
Longline
Bottom Trawl
Midwater Pollock Trawl – Fishmeal Plant
Midwater Pollock Trawl – NO Fishmeal Plant
Made into Fishmeal
WholeParts
Returned to Sea
Discharge from At-Sea Processors
Initial Processing - Catcher Vessel Deliveries to
Shoreside Processors 2004
0
100,000
200,000
300,000
400,000
500,000
600,000
700,000
800,000
Whole Bled H & G Discard - Fishmeal
Discard - Sea
Discard -Shore
Midwater Pollock Trawl
Pot
Bottom Trawl
Longline
Round
Weig
ht
(mt)
96%
97%
99%
Total Catch
Discarded Catch
OffalRetained
Catch
Landed Catch
SHORESIDEAT-SEA
Fishmeal Plant
Landed Catch
DiscardsOffal
Final Products
SHORESIDE PROSSESSOR Catcher Vessels
0
100,000
200,000
300,000
400,000
500,000
600,000
Returned to Sea Made into Fishmeal
met
ric
ton
s -
wet
wt.
At-Sea Processors
Shoreside Processors
Disposal of Fish Parts
At-Sea vs Shoreside
Shoreside Processors:
With Fishmeal Plant: 8 No Fishmeal Plant: 58
Bird’s Eye View:
Summary of Shoreside Processing
Small proportion of discharge is returned to sea, and that is usually
discarded within a few nautical miles of the coast.
Catcher Vessels
Black Cod heads are a bird delicacy.
No. of Process. Vessels
% of Total AGF At-Sea Discharge
12 -FM 53%
8 24%
23 16%
41 7%
Bird’ At-Sea Processing
Acknowledgements
Funding: National Research Council Research Associate Program
Alaska Fisheries Science Center - NOAA
Doug DeMaster, Julia Parrish
Mary Furuness, Dave Ackley, John Payne
Observer Program
