-
Ocean Acidifica+on vs. West Coast
Shellfish Fisheries Se8ng the Context
for this Workshop
Why fishermen (should) care about
OA
Evidence of acidified waters in
2007
Coincidental recruitment decline in wild
fisheries, i.e. sea urchins
West Coast shellfish are important
to coastal communi+es as
well as the ecosystem
This talk highlights key shellfish
fisheries on the west coast
And what we hope this workshop
will accomplish
-
Washington State Recrea+onal razor
clam fishery
54 miles of razor clam habitat
– divided into 5 management
beaches.
A typical recreaFonal razor clam
opener has as many as 20,000
and up to 30,000 diggers
out on a single day.
The Quinault Indian NaFon has
treaty rights to 50% of
the harvestable clams on 3
of the 5 management beaches
(those north of Grays Harbor).
-
$0
$10,000,000
$20,000,000
$30,000,000
$40,000,000
$50,000,000
$60,000,000
$70,000,000
Washington Aggregated Coastal Shellfish
Fishery XV Value State Managed
Commercial and Recrea+onal Fisheries
-
$0
$20,000,000
$40,000,000
$60,000,000
$80,000,000
$100,000,000
$120,000,000
0
50,000,000
100,000,000
150,000,000
200,000,000
250,000,000
300,000,000
350,000,000
1998 1999 2000 2001 2002 2003
2004 2005 2006 2007 2008 2009
Shellfish Landings Pounds State Landings
Pounds Shellfish Landings Value State
Landings Value
Combined Value of all OR Shellfish
and Landings (in pounds)
vs. Total Statewide Value and
Landings (in pounds)
-
$0.00
$10,000,000.00
$20,000,000.00
$30,000,000.00
$40,000,000.00
$50,000,000.00
$60,000,000.00
0
10,000,000
20,000,000
30,000,000
40,000,000
50,000,000
60,000,000
70,000,000
80,000,000
2000 2001 2002 2003 2004 2005
2006 2007 2008
Pounds
Value
N.CA. Comm’l Shellfish Fisheries
Pounds and Value
-
S.CA. Comm’l Shellfish Fisheries
Pounds and Value
$0.00
$5,000,000.00
$10,000,000.00
$15,000,000.00
$20,000,000.00
$25,000,000.00
$30,000,000.00
$35,000,000.00
$40,000,000.00
$45,000,000.00
$50,000,000.00
0
50,000,000
100,000,000
150,000,000
200,000,000
250,000,000
300,000,000
2000 2001 2002 2003 2004 2005
2006 2007 2008
Pounds
Value
-
Value of All CA Commercial
Shellfish Landings (in pounds)
vs.
Total Statewide XV Value and
Volume (in pounds)
0
100,000,000
200,000,000
300,000,000
400,000,000
500,000,000
600,000,000
$0
$20,000,000
$40,000,000
$60,000,000
$80,000,000
$100,000,000
$120,000,000
$140,000,000
2000 2001 2002 2003 2004 2005
2006 2007 2008
Major Shellfish Value
State Landings Value
Total State Landings
Total Shellfish Landings
CA COMMERCIAL SHELLFISH: 58%
TOTAL XV VALUE, 45% VOLUME
2000-‐2008
-
Shellfish Fisheries: Important to
Economy of harbor communiFes
and States
• Provide jobs, food
• Support harbor infrastructure, coastal
business economy
-
Shellfish Resources: Also important
for CA Current Ecosystem slide
borrowed from Feely presentaFon to
CINMS SAC
-
Shellfish Resources: Also important
for CA Current Ecosystem slide
borrowed from Feely presentaFon to
CINMS SAC
-
Managing fishery resources: Need
to understand variables
• Recruitment, growth, mortality and
now ??
• pH changes will challenge managers
to understand and incorporate new
variables
• Unlike aquaculture, wild harvesters
can not modify the ocean
environment
• We need to learn how to
adapt • First, we need to link
biological processes to oceanographic
measurements so we can forecast
-
We hope this workshop is the
first step to a coast-‐wide
monitoring system
• Baseline data are now lacking
in regions where CaCO3 satura+on
is expected to decrease
-
Thanks and acknowledgements
• Dan Ayres, WDFW for providing a
complete PPT presentaFon for WA
shellfisheries
• Leslee Parr, Mitch Vance &
ODFW staff for providing OR
landings data
• Zachary Hanan for his help
building graphs for this powerpoint
