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B
C
D
E
F
G
H
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
12
3
4
56
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8
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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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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
2,629.7
Bottomfish
2,629.7
1,495,006
0.1759
16.86%

n.
atlantic
bluefish
632.4
Bottomfish
632.4
3,027,643
0.0209
34.14%

n.
atlantic
butterfish
2.4
Bottomfish
2.4
0.00%

n.
atlantic
cunner
68,525.2
Bottomfish
68,525.2
271,297
25.2584
3.06%

n.
atlantic
pollock
432.7
Bottomfish
432.7
685,841
0.0631
7.73%

n.
atlantic
red.
hake
6.5
Bottomfish
6.5
4,778
0.05%

n.
atlantic
scup
826.7
Bottomfish
826.7
3,822,907
0.0216
43.10%

n.
atlantic
searobin
2,187.5
Bottomfish
2,187.5
463,711
0.4717
5.23%

n.
atlantic
tautog
16,876.3
Bottomfish
16,876.3
466,185
3.6201
5.26%

n.
atlantic
white.
perch
992.2
Bottomfish
992.2
93,039
1.0664
1.05%

Bottomfish
93,111.4
8,869,064
1.0498
n.
atlantic
windowpane
0.0
Flatfish
0.0
n.
atlantic
winter.
flounder
315,703.1
Flatfish
315,703.1
410,154
76.9719
Flatfish
315,703.1
2,525,530
12.5005
n.
atlantic
rainbow.
smelt
54.1
Other
54.1
n.
atlantic
atlantic.
herring
27.6
Other
27.6
n.
atlantic
atlantic.
menhaden
40.7
Other
40.7
n.
atlantic
american.
plaice
3.0
Other
3.0
n.
atlantic
blueback.
herring
0.1
Other
0.1
n.
atlantic
little.
skate
0.3
Other
0.3
Other
125.6
1,207,269
0.0104
n.
atlantic
striped.
bass
95.3
Small
Game
95.3
8,893,350
0.0011
n.
atlantic
mackerel.
atlantic
524.0
Small
Game
524.0
3,646,838
0.0144
n.
atlantic
weakfish
400.8
Small
Game
400.8
6,874
5.8307
Small
Game
1,020.1
15,678,352
0.0065
n.
atlantic
all
409,960.3
No
taget
409,960.3
28,280,214
1.4496
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.
