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A
B
C
D
E
F
G
H
I
prepared
12/
23/
02
by
comprehensive.
econ.
table.
ssc
dc
Provided
to
Elena
Besedin
at
Abt
with
this
note:

I'm
attaching
a
workbook
that
reports
our
regional
estimates
of
foregone
commerical
and
recreational
yield
for
Northern
California
and
Northern
Atlantic
We
will
provide
a
detailed
report
of
our
methods
in
due
course.
For
now,
here's
a
brief
synopsis
of
what
you're
seeing.

The
basic
modeling
approach
for
deriving
foregone
yield
from
I&
E
is
the
same
that
we've
used
in
previous
case
studies.
We
have
introduced
a
few
relatively
minor
changes
to
the
procedure
based
on
public
comments
and
other
shortcomings
in
the
procedure
that
we
identified
ourselves.
The
most
significant
of
the
changes
are
a
(
1)
a
correction
of
the
algorithm
that
calculates
foregone
production
and
(
2)
relaxing
the
assumption
that
all
impinged
individuals
were
age
1.
Now
we
are
assuming
that
the
ages
of
impinged
fish
are
1
and
greater,
and
follow
an
age
distribution
that
is
implied
by
the
associated
survival
rates.
These
methods
have
not
yet
been
applied
to
our
previous
case
studies.
They
have
been
applied
to
our
new
case
studies,
which
include
Humboldt,
Potrero,
Morro
Bay,
Moss
Landing,
and
Diablo
Canyon
(
N.
California)
and
Millstone
(
N.
Atlantic)

The
summary
table
in
Rec.
Losses.
Regional.
Extrapolation.
Stratus.
xls
presents
extrapolations
on
a
regional
basis
separately
for
Northern
Califonia
and
Northern
Atlantic.
12
3
4
56
7
8
9
10
A
B
C
Definitions
of
fields
presented
in
sheet
"
econ.
extrap.
tidy"

Field
Contents
sum.
com.
loss.
lb.
model.
facs
Total
Annual
Foregone
Commercial
Yield
(
lbs)
among
Model
Facilities
(
modeled
estimate)

regional.
com.
landings.
empirical.
lbs
Regional
Total
Annual
Commercial
Yield
(
lbs)
as
Reported
by
NMFS
(
empirical
data)

regional.
com.
landings.
lbs.
extrap
Estimated
Regional
Total
Annual
Foregone
Commercial
Yield
(
lbs)­­
Extrapolation
sum.
rec.
loss.
lb.
model.
facs
Total
Annual
Foregone
Recreational
Yield
(
lbs)
among
Model
Facilities
(
modeled
estimate)

regional.
rec.
landings.
empirical.
lbs
Regional
Total
Annual
Recreational
Yield
(
lbs)
as
Reported
by
NMFS
(
empirical
data)

regional.
rec.
landings.
lbs.
extrap
Estimated
Regional
Total
Annual
Foregone
Recreational
Yield
(
lbs)­­
Extrapolation
rec.
forgone.
catch.
n
Estimated
Regional
Total
Annual
Foregone
Recreational
Catch
(
individual
fish)­­
Extrapolation
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39
A
B
C
D
E
F
G
H
I
J
K
L
M
region
species
rec.
forgone.
c
atch.
n
Group
Sum
of
forgone
catch
5­
year
Average
Landing
%
Losses
Species
as
%
group
n.
atlantic
atlantic.
cod
380.3
Bottomfish
380.3
1,495,006
0.0254
16.86%

n.
atlantic
bluefish
79.7
Bottomfish
79.7
3,027,643
0.0026
34.14%

n.
atlantic
butterfish
0.4
Bottomfish
0.4
0.00%

n.
atlantic
cunner
14,362.5
Bottomfish
14,362.5
271,297
5.2940
3.06%

n.
atlantic
pollock
14.7
Bottomfish
14.7
685,841
0.0021
7.73%

n.
atlantic
red.
hake
0.2
Bottomfish
0.2
4,778
0.05%

n.
atlantic
scup
254.0
Bottomfish
254.0
3,822,907
0.0066
43.10%

n.
atlantic
searobin
36.6
Bottomfish
36.6
463,711
0.0079
5.23%

n.
atlantic
tautog
5,189.2
Bottomfish
5,189.2
466,185
1.1131
5.26%

n.
atlantic
white.
perch
217.5
Bottomfish
217.5
93,039
0.2338
1.05%

Bottomfish
20,535.1
8,869,064
0.2315
n.
atlantic
windowpane
0.0
Flatfish
0.0
n.
atlantic
winter.
flounder
91,995.0
Flatfish
91,995.0
410,154
22.4294
Flatfish
91,995.0
2,525,530
3.6426
n.
atlantic
rainbow.
smelt
7.0
Other
7.0
n.
atlantic
atlantic.
herring
0.1
Other
0.1
n.
atlantic
atlantic.
menhaden
9.2
Other
9.2
n.
atlantic
american.
plaice
0.0
Other
0.0
n.
atlantic
blueback.
herring
0.0
Other
0.0
n.
atlantic
little.
skate
0.0
Other
0.0
Other
16.4
1,207,269
0.0014
n.
atlantic
striped.
bass
3.9
Small
Game
3.9
8,893,350
0.0000
n.
atlantic
mackerel.
atlantic
6.6
Small
Game
6.6
3,646,838
0.0002
n.
atlantic
weakfish
94.7
Small
Game
94.7
6,874
1.3781
Small
Game
105.2
15,678,352
0.0007
n.
atlantic
all
112,651.7
No
taget
112,651.7
28,280,214
0.3983
use
this
as
quick
estimate
for
non­
seeking
species
group
Stuart
Smith
1/
2/
03
Fields:
region,
species,
rec.
forgone.
catch.
n
are
provided
by
Stratus.

'
Group'­
grouping
the
species
into
four
groups:
bottomfish,
flatfish,

small
game,
big
game.

'
Sum
of
forgone
catch'
is
equal
to
'
rec.
forgone.
catch.
n'
in
the
case
of
individual
species
and
equal
to
the
sum
of
'
rec.
forgone.
catch.
n'
for
species
included
in
the
group
in
the
case
of
species
group.

'
5­
year
Average
Landing'
is
the
calculated
historic
average
landing
by
species/
species
group
over
the
period
1997­
2001.

'%
losses'
is
the
'
Sum
of
forgone
catch'
divided
by
'
5­
year
Average
Landing'
and
multiplied
by
100.
