ML073340930
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| Issue date: | 01/31/2007 |
| From: | ASA Analysis & Communication |
| To: | Dynegy Roseton, Entergy Nuclear Indian Point 2, Entergy Nuclear Indian Point 3, Mirant Bowline, Office of Nuclear Reactor Regulation |
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Appendix D Annual Abundance Indices
APPENDIX D CONTENTS D.1 INTRODUCTION D.2 METHODS D.3 LITERATURE CITED LIST OF FIGURES Number Title D-1 Striped bass indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005 D-2 White perch indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005 D-3 Atlantic tomcod indices of annual abundance based on Long River Survey, 1974-2005 D-4 Bay anchovy indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-5 American shad indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005 D-6 Alewife indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-7 Blueback herring indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-8 Rainbow smelt indices of annual abundance based on Fall Juvenile Survey, 1979-2005, and Long River Survey, 1974-2005 D-9 Hogchoker indices of annual abundance based on Fall Juvenile Survey, 1974-2005 D-10 Spottail shiner indices of annual abundance based on Beach Seine Survey, 1974-2005 D-11 White catfish indices of annual abundance based on Beach Seine Survey, 1974-2005 D-12 Weakfish indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-1
D-13 Bluefish indices of annual abundance based on Beach Seine Survey, 1974-2005 LIST OF TABLES Number Title D-1 Parameters for indices of annual abundance based on data from the Beach Seine Survey (BSS), Fall Juvenile Survey (FJS), and Longitudinal River Survey (LRS)
D-2 Striped bass indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005 D-3 White perch indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005 D-4 Atlantic tomcod indices of annual abundance based on Long River Survey, 1974-2005 D-5 Bay anchovy indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-6 American shad indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005 D-7 Alewife indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-8 Blueback herring indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-9 Rainbow smelt indices of annual abundance based on Fall Juvenile Survey, 1979-2005, and Long River Survey, 1974-2005 D-10 Hogchoker indices of annual abundance based on Fall Juvenile Survey, 1974-2005 D-11 Spottail shiner indices of annual abundance based on Beach Seine Survey, 1974-2005 D-12 White catfish indices of annual abundance based on Beach Seine Survey, 1974-2005 D-13 Weakfish indices of annual abundance based on Fall Juvenile Survey, 1979-2005 D-14 Bluefish indices of annual abundance based on Beach Seine Survey, 1974-2005 D-2
D.1 INTRODUCTION Annual indices of abundance for 13 species of finfish are based on data from the Longitudinal River Survey (LRS), Fall Juvenile Survey (FJS) and Beach Seine Survey (BSS). This appendix documents the methods used to calculate these indices of abundance and presents the indices from 1974 through 2005.
For each of the 13 species, one or more sampling programs were selected to be the basis for the index of abundance. The selections considered when and where each species was expected to be present in the Hudson River based on life-history characteristics of each species in relation to the times and places that sampling gear is deployed by each program. The selections were also based on observed catch rates from each of the three sampling programs.
The sampling programs on which the indices of abundance are based as well as the life stages and weeks selected for analysis are summarized in Table D-1.
The statistical methods used to estimate the annual indices of abundance are described in the following section. Summaries of the indices of annual abundance for the 13 species are presented in Figures D-1 through D-13 and Tables D-2 through D-14.
D.2 METHODS D.2.1 Beach Seine Survey Indices of abundance using data from the BSS were calculated for juvenile striped bass, white perch, American shad, bluefish, and spottail shiner; for yearling white perch; and for yearling and older white catfish. Weeks 33 to 40 were selected as the only period consistently sampled in the BSS. The Beach Seine Survey Index of abundance (B) for each year and species is a measure of catch per haul and is calculated according to the following formula:
Ct jiw 12 j Wi hiw 1 40 i =1 X ,
B =
n w=33 12 w
i =1 Wi where B = the BSS index for a species in a year; Ctjiw = the count of a species in sample j, region i, and week w; Xw = 1 if week w was sampled during the year, 0 otherwise; n = the number of weeks sampled in the year, 40
= Xw ;
w =33 hiw = the number of seine hauls in region i and week w; and Wi = the number of beaches in the sampling design in river region i.
D-3
The above equation can be expressed in terms of a weighted average catch per haul (CPH) as follows:
12 W Y 1 40 1 40 i wi B = Yw X w = i =112 Xw ,
n w = 33 n w = 33 W i
i =1 where Ywi = the average CPH in week w and region i and Yw = the weighted average CPH in week w.
Because not all weeks within the period of week 33 to 40 were sampled by the BSS in each year, the variance of the BSS index in any year is calculated as a two-stage variance. The primary sampling unit in the first stage is weeks, and the design is assumed to be simple random sampling (i.e., weeks of sampling are construed to be a random sample of weeks within the period from week 33 through week 40). The sampling units in the second stage are regions, and the design is stratified random where regions are the statistical strata. The variance is calculated using a two-stage estimator based on equation 11.24 in Cochran (1977, p. 303 ):
n 1
var (B ) =
N 2 1 n
S1 +
Nn w S 22,w ,
where S12 = the first stage variance (temporal, among weeks),
S 2 2 ,w
= the second stage variance (spatial) in week w, and N = the number of weeks (8) within the selected period, i.e., weeks 33 through 40.
The first stage variance component is estimated as:
(Yw B )
1 40 S12 =
2 n 1 w =33 The second stage variance component is estimated as:
D-4
1 2
Ct jiw Ct jiw 2 j 12 hiw j Wi (hiw )(hiw 1) i =1 S 22,w = .
2 12 Wi i =1 Then:
std. err.(B) = (var(B))1/2.
D.2.2 Fall Juvenile Survey Indices of abundance using data from channel sampling by the FJS were calculated for juvenile blueback herring, alewife, bay anchovy, weakfish, and rainbow smelt for the years 1979 through 2005, the years that the channel was sampled. In addition, indices of abundance based on bottom sampling by the FJS were calculated for juvenile hogchoker. Weeks 33 to 40 were selected as the only period consistently sampled in the FJS for channel sampling and weeks 40 to 43 for bottom sampling. The Fall Juvenile Survey Index of abundance (F) for each year and species sampled in gear specific for either the channel or the bottom is a measure of average density and is calculated according to the following formula:
Ct jiswg 12 3 j Vis v jiswg 1 40 i =1 s =1 Fg = j X ,
w n w=33 12 3 i =1 s =1 Vis where Fg = the FJS index (for gear g) for a species in a year; Ctjiswg = the count of a species in sample j from gear g, region i, stratum s, and week w; Xw = 1 if week w was sampled during the year, 0 otherwise; n = the number of weeks sampled in the year, 40
= Xw ;
w =33 vjiswg = the volume of sample j from gear g in region i , stratum s, and week w; and Visg = the volume of stratum s, sampled by gear g, in river region i.
D-5
The above equation can be expressed in terms of weighted average sample densities as follows:
12 3 40 si iswg 40 V Y 1 1 Fg = Ywg X w = i =1 12s =1 3 X w ,
Vsi n w=33 n w=33 i =1 s =1 where Yiswg = the average density of a species in samples from region i, stratum s, week w, and gear g and Y wg = the weighted average density of a species in samples from week w, and gear g.
Because not all weeks within the period of week 33 to 40 (or 40 to 43 for bottom sampling) were sampled by the FSS in each year, the variance of the FSS index of abundance in any year is calculated as the sum of two components. The primary unit in the first stage is weeks, and the design is assumed to be simple random sampling (i.e., weeks of sampling are construed to be a random sample of weeks within the period from week 33 through week 40 or from week 40 through week 43). The sampling units in the second stage are region-(habitat) strata, and the design is stratified random where region-(habitat) strata are the statistical strata. The variance is calculated using a two-stage estimator based on equation 11.24 in Cochran (1977, p. 303 ):
n 1
var(Fg ) =
N 2 1 S1, g + S22, gw ,
n Nn w where S12, g = the first stage variance (temporal, among weeks),
S 22, gw = the second stage variance (spatial) in week w, and N = the number of weeks (8 or 4) within the selected period, i.e., weeks 33 through 40 or weeks 40 through 43.
The first stage variance component is calculated as:
(Ywg Fg ) .
1 40 2 S12,g =
n 1 w=33 The second stage variance is calculated as:
D-6
hiswg (Ct jiswg C tiswg )2 j
hiswg 1 12 3 Visg2 i =1 s =1 2
vijswg j
S 22, gw = 2 12 3 V isg i =1 s =1 where Visg = the total volume of (habitat) stratum, s, and region, i, sampled by gear g.
Then:
std. err. (Fg) = (var(Fg))1/2.
D.2.3 Long River Survey Indices of abundance using data from the LRS were calculated for striped bass, white perch, American shad, Atlantic tomcod and rainbow smelt. For striped bass, white perch and American shad, the indices are based on the egg, yolk-sac larvae (YSL), and post yolk-sac larvae (PYSL) life stages and the weeks selected depend on the period of abundance. For Atlantic tomcod the index was based on PYSL and juveniles combined over weeks 19 through 22 and for rainbow smelt the index was based on the juvenile life stage in weeks 20 through 27.
The Long River Survey Index of abundance (L) for each year and species is a measure of average density and is calculated according to the following formula:
Ct jisw 12 5 j V
v jisw is lastwk i =1 s =1 L = j ,
w = firstwk 12 5 i =1 s =1 Vis where L = the LRS index for any species in any year; Ctjisw = the count of a species in sample j, region i, stratum s, and week w; vjisw = the volume of sample j from in region i , stratum s, and week w; Vis = the volume of stratum s in river region i; firstwk = the first week included in the annual index of abundance:
striped bass, American shad, and white perch egg, YSL, and PYSL -- the first week of the year in which the sum of weekly density estimates (from the initial week of sampling in the D-7
year through the current week) exceeds 5% of the sum of densities over all weeks of sampling, Atlantic tomcod PYSL and juveniles combined -- week 19, and rainbow smelt juveniles -- week 20; and lastwk = the last week included in the annual index of abundance:
striped bass, American shad, and white perch egg, YSL, and PYSL -- firstwk +7; Atlantic tomcod PYSL and juveniles combined -- week 22; and rainbow smelt juveniles -- week 27.
The above equation can be expressed in terms of average sample density as follows:
12 5 lastwk si isw lastwk V Y L = Y w = i =112s =1 5 ,
w = firstwk w = firtswk V si i =1 s =1 where Yisw = the average density of a species in samples from region i, stratum s, and week w [Note: for strata and regions that were not sampled, predicted densities (based on regression predictors and densities in adjacent strata) were used] and Yw = the weighted average density of a species in samples collected during week w.
Variance of the index was estimated using the following equation:
n (Ct jisw Ct isw ) 2 j
si n si 1 Vis2 s i 2
v jisw lastwk j var( L) = ,
w = firstwk 2
Vis s i where Vis = the total volume in region i and stratum s.
Then:
std. err.(L) = (var(L))1/2.
D-8
As indicated in Heimbuch et al. (1992), for indices based on LRS sampling, the volume of water between the beach and 10 ft deep was divided into two substrata: beach and shore. The beach stratum, defined from the beach to water five ft deep, corresponds with the shallow waters sampled in the BSS. The shore stratum, defined as water greater than five ft deep and less than 10 ft deep, is an unsampleable region. Densities in these substrata were estimated based on fixed ratios to the densities in adjacent strata.
D-9
D.3 LITERATURE CITED Cochran, W.G. 1977. Sampling techniques, 3rd edition. Wiley, New York.
Heimbuch, D.G., D.J. Dunning, and J.R. Young. 1992. Post-Yolk-Sac Larvae Abundance as an Index of Year Class Strength of Striped Bass in the Hudson River, pages 376-391 in C. L. Smith (ed.) Estuarine Research in the 1980s. State University of New York Press. Albany.
D-10
Striped bass 30 25 Egg Egg Index (LRS) 20 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 30 25 Yolk-sac Larvae YSL Index (LRS) 20 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 30 PYSL Index (LRS) 25 Post Yolk-sac Larvae 20 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 30 25 Juvenile JUV Index (BSS) 20 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 Figure D-1. Striped bass indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005
White perch 5
4 Egg Egg Index (LRS) 3 2
1 0
1975 1980 1985 1990 1995 2000 2005 5
Yolk-sac Larvae YSL Index (LRS) 4 3
2 1
0 1975 1980 1985 1990 1995 2000 2005 10 PYSL Index (LRS) 8 Post Yolk-sac Larvae 6
4 2
0 1975 1980 1985 1990 1995 2000 2005 25 Juvenile JUV Index (BSS) 20 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 10 Yearling YRLG Index (BSS) 8 6
4 2
0 1975 1980 1985 1990 1995 2000 2005 Figure D-2. White perch indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005
Atlantic tomcod 1.0 Post Yolk-sac Larvae and Juvenile 0.9 0.8 PYSL/JUV Index (LRS) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1975 1980 1985 1990 1995 2000 2005 Figure D-3. Atlantic tomcod indices of annual abundance based on Long River Survey, 1974-2005
Bay anchovy 350 Juvenile 300 250 JUV Index (FJS) 200 150 100 50 0
1980 1985 1990 1995 2000 2005 Figure D-4. Bay anchovy indices of annual abundance based on Fall Juvenile Survey, 1979-2005
American shad 1.0 Egg Egg Index (LRS) 0.8 0.6 0.4 0.2 0.0 1975 1980 1985 1990 1995 2000 2005 1.0 Yolk-sac Larvae YSL Index (LRS) 0.8 0.6 0.4 0.2 0.0 1975 1980 1985 1990 1995 2000 2005 1.5 PYSL Index (LRS)
Post Yolk-sac Larvae 1.0 0.5 0.0 1975 1980 1985 1990 1995 2000 2005 30 25 Juvenile JUV Index (BSS) 20 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 Figure D-5. American shad indices of annual abundance based on Long River Survey and Beach Seine Survey, 1974-2005
Alewife Juvenile 1.0 0.8 JUV Index (FJS) 0.6 0.4 0.2 0.0 1980 1985 1990 1995 2000 2005 Figure D-6. Alewife indices of annual abundance based on Fall Juvenile Survey, 1979-2005
Blueback herring 50 Juvenile 45 40 35 JUV Index (FJS) 30 25 20 15 10 5
0 1980 1985 1990 1995 2000 2005 Figure D-7. Blueback herring indices of annual abundance based on Fall Juvenile Survey, 1979-2005
Rainbow smelt 8
7 Juvenile - FJS 6
JUV Index (FJS) 5 4
3 2
1 0
1975 1980 1985 1990 1995 2000 2005 0.10 0.09 Juvenile - LRS 0.08 0.07 JUV Index (LRS) 0.06 0.05 0.04 0.03 0.02 0.01 0.00 1975 1980 1985 1990 1995 2000 2005 Figure D-8. Rainbow smelt indices of annual abundance based on Fall Juvenile Survey, 1979-2005, and Long River Survey, 1974-2005
Hogchoker 11 Juvenile 10 9
8 JUV Index (FJS) 7 6
5 4
3 2
1 0
1975 1980 1985 1990 1995 2000 2005 Figure D-9. Hogchoker indices of annual abundance based on Fall Juvenile Survey, 1974-2005
Spottail shiner 30 Juvenile 25 20 JUV Index (BSS) 15 10 5
0 1975 1980 1985 1990 1995 2000 2005 Figure D-10. Spottail shiner indices of annual abundance based on Beach Seine Survey, 1974-2005
White catfish 0.20 Yearling and Older 0.15 YROL Index (BSS) 0.10 0.05 0.00 1975 1980 1985 1990 1995 2000 2005 Figure D-11. White catfish indices of annual abundance based on Beach Seine Survey, 1974-2005
Weakfish 2.0 Juvenile 1.8 1.6 1.4 JUV Index (FJS) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 1980 1985 1990 1995 2000 2005 Figure D-12. Weakfish indices of annual abundance based on Fall Juvenile Survey, 1979-2005
Bluefish 3.0 Juvenile 2.5 2.0 JUV Index (BSS) 1.5 1.0 0.5 0.0 1975 1980 1985 1990 1995 2000 2005 Figure D-13. Bluefish indices of annual abundance based on Beach Seine Survey, 1974-2005
Table D-1 Parameters for Indices of Annual Abundance Based on Data from the Beach Seine Survey (BSS), Fall Juvenile Survey (FJS), and Longitudinal River Survey (LRS)
Weeks Used in Sampling Program Species Life Stage BSS FJS LRS Striped bass Egg, YSL, and PYSL Variable1 Striped bass Juvenile 33-40 White perch Egg, YSL, and PYSL Variable1 White perch Juvenile and Yearling 33-40 PYSL and Juvenile Atlantic tomcod 19-22 combined Bay anchovy Juvenile 33-40 (Channel)
American shad Egg, YSL, and PYSL Variable1 American shad Juvenile 33-40 Alewife Juvenile 33-40 (Channel)
Blueback herring Juvenile 33-40 (Channel)
Rainbow smelt Juvenile 33-40 (Channel) 20-27 Hogchoker Juvenile 40-43 (Bottom)
Spottail shiner Juvenile 33-40 White catfish Yearling and older 33-40 Weakfish Juvenile 33-40 (Channel)
Bluefish Juvenile 33-40 1
7 weeks beginning with the first week in which 5% of annual total is achieved
Table D-2 Striped Bass Indices of Annual Abundance Based on Long River Survey and Beach Seine Survey, 1974-2005 Long River Survey Beach Seine Survey Egg Yolk-Sac Larvae Post Yolk-Sac Larvae Juvenile Index Std. Err. Index Std. Err. Index Std. Err. Index Std. Err.
1974 0.062 0.044 0.080 0.018 0.424 0.033 5.652 0.869 1975 0.076 0.012 0.487 0.031 0.694 0.044 4.557 0.301 1976 0.097 0.011 0.253 0.014 0.265 0.017 3.445 0.392 1977 0.195 0.022 0.566 0.029 0.605 0.036 5.919 0.411 1978 0.077 0.010 0.306 0.019 0.538 0.038 9.115 1.884 1979 0.075 0.008 0.359 0.022 0.468 0.032 3.760 0.756 1980 0.072 0.009 0.319 0.024 0.833 0.062 5.605 0.829 1981 0.137 0.015 0.486 0.055 2.482 0.116 6.611 0.912 1982 0.073 0.007 0.745 0.078 0.825 0.061 3.826 0.539 1983 0.276 0.189 0.391 0.026 0.589 0.033 6.580 1.249 1984 0.152 0.019 0.358 0.030 0.867 0.096 5.059 1.008 1985 0.050 0.005 0.202 0.017 0.405 0.033 1.069 0.237 1986 0.060 0.008 0.421 0.032 0.721 0.036 1.618 0.388 1987 0.059 0.007 1.449 0.085 1.697 0.066 12.823 2.245 1988 0.024 0.008 0.706 0.068 1.481 0.139 4.912 0.607 1989 0.588 0.269 2.941 0.277 4.540 0.344 5.665 0.897 1990 1.219 0.182 3.271 0.295 5.642 0.535 6.415 0.703 1991 0.363 0.064 2.855 0.257 8.005 0.770 5.032 1.070 1992 0.874 0.154 3.884 0.219 6.380 0.426 3.678 0.581 1993 0.633 0.122 4.812 0.969 8.247 0.727 7.496 1.626 1994 9.825 1.869 3.678 0.526 8.454 0.795 5.880 1.056 1995 6.266 1.010 1.305 0.199 3.942 0.389 6.043 0.903 1996 4.497 0.649 12.743 1.796 15.404 1.465 1.252 0.330 1997 1.029 0.185 1.795 0.296 4.887 0.745 9.185 0.829 1998 1.131 0.343 3.173 0.548 6.133 0.490 6.287 0.709 1999 0.460 0.087 4.265 0.393 14.788 1.343 7.621 1.486 2000 2.144 0.194 8.061 0.817 25.886 2.823 2.320 0.691 2001 1.030 0.235 9.057 0.748 21.999 1.364 14.215 1.551 2002 0.291 0.042 0.879 0.054 2.625 0.151 7.649 0.860 2003 8.721 4.871 5.889 0.634 7.185 0.718 9.834 1.554 2004 2.018 0.402 4.534 0.372 6.254 0.352 3.752 0.822 2005 0.960 0.158 3.786 0.874 7.169 0.621 11.582 1.469
Table D-3 White Perch Indices of Annual Abundance Based on Long River Survey and Beach Seine Survey, 1974-2005 Long River Survey Beach Seine Survey Egg Yolk-Sac Larvae Post Yolk-Sac Larvae Juvenile Yearling Index Std. Err. Index Std. Err. Index Std. Err. Index Std. Err. Index Std. Err.
1974 0.122 0.049 0.040 0.010 0.464 0.037 4.091 0.556 9.57 2.24 1975 0.335 0.095 0.198 0.016 1.783 0.147 8.040 1.954 2.68 1.41 1976 0.480 0.092 0.388 0.015 2.214 0.239 9.537 1.341 3.31 0.43 1977 0.112 0.019 0.264 0.014 2.431 0.128 6.782 1.114 0.45 0.07 1978 0.687 0.083 0.261 0.021 3.438 0.195 13.934 2.838 4.92 2.37 1979 0.533 0.070 0.336 0.017 3.571 0.103 17.033 2.747 5.31 1.63 1980 0.411 0.038 0.328 0.015 2.954 0.110 10.682 2.306 3.24 0.94 1981 1.282 0.080 0.360 0.032 3.467 0.174 10.297 1.291 3.22 0.62 1982 1.374 0.158 0.986 0.050 5.757 0.221 9.995 1.139 4.31 0.80 1983 1.089 0.084 0.776 0.040 2.977 0.101 10.363 2.016 4.08 1.60 1984 2.691 0.659 0.310 0.015 2.754 0.119 4.175 0.684 4.31 1.11 1985 1.036 0.117 0.463 0.040 5.640 0.214 4.353 1.076 1.47 0.53 1986 2.306 0.338 1.375 0.080 8.106 0.378 5.597 1.129 1.71 0.43 1987 0.528 0.063 0.483 0.022 3.974 0.119 8.880 1.678 2.21 0.26 1988 0.781 0.104 0.381 0.037 2.905 0.147 7.606 1.296 1.23 0.25 1989 0.171 0.014 0.568 0.051 4.057 0.374 6.281 1.715 2.84 0.51 1990 1.633 0.350 0.460 0.034 2.919 0.261 3.844 0.416 2.25 0.59 1991 0.443 0.059 0.241 0.017 3.637 0.236 4.033 0.754 1.57 0.43 1992 0.665 0.062 1.052 0.062 4.921 0.202 3.677 0.645 1.34 0.18 1993 0.431 0.060 0.792 0.044 4.958 0.185 5.842 0.949 1.89 0.55 1994 0.378 0.035 0.812 0.043 4.106 0.173 2.837 0.581 0.65 0.19 1995 0.454 0.070 0.427 0.020 2.506 0.108 3.209 0.484 1.14 0.34 1996 1.071 0.134 0.721 0.051 6.123 0.269 0.309 0.125 0.29 0.10 1997 0.265 0.047 0.127 0.005 1.461 0.075 3.912 0.558 0.45 0.07 1998 0.370 0.056 0.192 0.014 2.300 0.142 1.930 0.486 1.39 0.29 1999 0.192 0.026 0.210 0.017 2.696 0.152 11.218 2.992 1.29 0.43 2000 0.396 0.030 0.480 0.027 4.841 0.504 1.766 0.391 0.89 0.29 2001 0.091 0.010 0.253 0.017 2.997 0.237 6.997 0.817 0.42 0.13 2002 0.397 0.037 0.677 0.027 2.125 0.147 6.766 1.038 3.33 0.87 2003 0.329 0.034 0.478 0.023 2.845 0.171 15.671 3.697 0.71 0.13 2004 0.355 0.036 0.526 0.036 2.782 0.127 4.203 0.985 3.10 1.03 2005 0.198 0.013 0.470 0.029 2.233 0.133 6.441 0.998 0.313 0.085
Table D-4 Atlantic Tomcod Indices of Annual Abundance Based on Long River Survey, 1974-2005 Long River Survey Post Yolk-Sac Larvae and Juvenile Index Std. Err.
1974 0.093 0.016 1975 0.035 0.009 1976 0.011 0.003 1977 0.412 0.267 1978 0.110 0.031 1979 0.026 0.006 1980 0.234 0.078 1981 0.149 0.037 1982 0.064 0.024 1983 0.035 0.012 1984 0.155 0.070 1985 0.149 0.027 1986 0.077 0.010 1987 0.319 0.049 1988 0.151 0.034 1989 0.365 0.089 1990 0.306 0.135 1991 0.193 0.029 1992 0.065 0.021 1993 0.214 0.061 1994 0.106 0.022 1995 0.148 0.024 1996 0.094 0.014 1997 0.049 0.011 1998 0.036 0.008 1999 0.030 0.007 2000 0.009 0.002 2001 0.176 0.029 2002 0.005 0.001 2003 0.042 0.006 2004 0.088 0.012 2005 0.088 0.014
Table D-5 Bay Anchovy Indices of Annual Abundance Based on Fall Juvenile Survey, 1979-2005 Fall Juvenile Survey Juvenile Index Std. Err.
1979 63 10 1980 216 53 1981 149 24 1982 197 25 1983 115 32 1984 160 33 1985 153 16 1986 109 16 1987 196 42 1988 341 51 1989 289 40 1990 110 12 1991 111 8 1992 147 35 1993 161 20 1994 138 33 1995 266 44 1996 76 20 1997 148 27 1998 132 20 1999 98 25 2000 37 4 2001 63 10 2002 120 16 2003 80 7 2004 147 48 2005 68 7
Table D-6 American Shad Indices of Annual Abundance Based on Long River Survey and Beach Seine Survey, 1974-2005 Long River Survey Beach Seine Survey Egg Yolk-Sac Larvae Post Yolk-Sac Larvae Juvenile Index Std. Err. Index Std. Err. Index Std. Err. Index Std. Err.
1974 0.097 0.031 0.004 0.001 0.171 0.065 11.499 0.825 1975 0.060 0.016 0.025 0.004 0.276 0.176 10.630 1.431 1976 0.037 0.009 0.017 0.002 0.155 0.049 13.325 0.869 1977 0.036 0.004 0.024 0.002 0.170 0.033 13.702 1.388 1978 0.044 0.008 0.034 0.003 0.092 0.031 23.671 2.658 1979 0.045 0.007 0.053 0.006 0.492 0.069 11.645 1.741 1980 0.046 0.009 0.111 0.012 0.479 0.216 10.747 2.464 1981 0.161 0.075 0.106 0.012 0.777 0.309 17.615 2.167 1982 0.123 0.041 0.149 0.016 0.586 0.120 16.312 1.919 1983 0.356 0.114 0.134 0.015 0.573 0.092 19.679 3.887 1984 0.472 0.112 0.240 0.019 0.376 0.168 8.686 1.839 1985 0.262 0.039 0.247 0.041 0.672 0.165 8.078 1.297 1986 0.770 0.325 0.122 0.015 1.054 0.150 19.060 3.735 1987 0.349 0.077 0.063 0.007 0.177 0.077 13.473 2.275 1988 0.259 0.051 0.093 0.030 0.729 0.344 7.717 1.010 1989 0.327 0.063 0.075 0.010 1.040 0.794 22.052 2.414 1990 0.270 0.062 0.400 0.053 1.170 0.733 18.674 1.742 1991 0.086 0.016 0.042 0.008 0.319 0.115 11.966 3.155 1992 0.075 0.021 0.082 0.011 0.622 0.213 13.923 1.051 1993 0.120 0.031 0.011 0.002 0.228 0.116 7.065 0.869 1994 0.227 0.036 0.038 0.005 0.366 0.126 17.557 3.276 1995 0.121 0.030 0.021 0.003 0.191 0.060 3.786 0.433 1996 0.262 0.042 0.012 0.003 0.260 0.061 11.773 1.928 1997 0.036 0.005 0.008 0.001 0.153 0.033 12.537 2.036 1998 0.086 0.012 0.008 0.001 0.089 0.028 2.361 0.415 1999 0.085 0.018 0.003 0.001 0.184 0.066 8.813 2.441 2000 0.119 0.015 0.013 0.002 0.090 0.026 5.925 0.930 2001 0.039 0.012 0.014 0.004 0.459 0.182 24.402 1.827 2002 0.034 0.004 0.016 0.003 0.100 0.037 4.792 0.468 2003 0.072 0.019 0.011 0.001 0.093 0.025 8.686 1.204 2004 0.033 0.008 0.008 0.001 0.141 0.062 3.397 0.613 2005 0.042 0.005 0.004 0.001 0.032 0.015 3.208 0.601
Table D-7 Alewife Indices of Annual Abundance Based on Fall Juvenile Survey, 1979-2005 Fall Juvenile Survey Juvenile Index Std. Err.
1979 0.199 0.077 1980 0.686 0.353 1981 0.634 0.214 1982 0.275 0.084 1983 0.188 0.067 1984 0.213 0.125 1985 0.930 0.407 1986 0.263 0.079 1987 0.524 0.268 1988 0.268 0.129 1989 0.226 0.068 1990 0.350 0.137 1991 0.328 0.115 1992 0.165 0.084 1993 0.234 0.083 1994 0.120 0.062 1995 0.113 0.034 1996 0.489 0.146 1997 0.319 0.101 1998 0.025 0.015 1999 0.697 0.173 2000 0.203 0.077 2001 0.871 0.720 2002 0.017 0.014 2003 0.286 0.117 2004 0.100 0.039 2005 0.338 0.092
Table D-8 Blueback Herring Indices of Annual Abundance Based on Fall Juvenile Survey, 1979-2005 Fall Juvenile Survey Juvenile Index Std. Err.
1979 3.695 0.746 1980 2.606 0.753 1981 21.197 5.861 1982 10.331 2.061 1983 6.082 1.073 1984 20.385 3.673 1985 17.424 4.584 1986 6.482 1.383 1987 25.608 12.357 1988 26.693 4.297 1989 16.825 5.408 1990 29.688 10.639 1991 12.648 4.469 1992 15.523 3.874 1993 7.717 1.594 1994 5.765 1.899 1995 1.266 0.417 1996 50.160 15.888 1997 7.301 1.428 1998 0.032 0.029 1999 2.073 0.783 2000 2.677 1.163 2001 5.845 4.998 2002 0.797 0.546 2003 5.920 1.891 2004 1.523 0.347 2005 2.332 1.049
Table D-9 Rainbow Smelt Indices of Annual Abundance Based on Fall Juvenile Survey, 1979-2005, and Long River Survey, 1974-2005 Fall Juvenile Survey Long River Survey Juvenile Juvenile Index Std. Err. Index Std. Err.
1974 0.020 0.004 1975 0.001 0.000 1976 0.000 0.000 1977 0.006 0.002 1978 0.069 0.006 1979 0.226 0.092 0.020 0.003 1980 0.099 0.088 0.031 0.002 1981 0.000 0.000 0.001 0.000 1982 0.129 0.055 0.002 0.000 1983 0.000 0.000 0.000 0.000 1984 0.419 0.165 0.003 0.000 1985 0.074 0.057 0.002 0.000 1986 0.959 0.165 0.016 0.001 1987 0.122 0.065 0.006 0.001 1988 0.041 0.027 0.051 0.008 1989 0.000 0.000 0.000 0.000 1990 1.140 0.340 0.027 0.002 1991 0.000 0.000 0.010 0.003 1992 6.721 2.340 0.045 0.005 1993 1.190 0.563 0.011 0.003 1994 0.104 0.104 0.008 0.002 1995 0.000 0.000 0.010 0.002 1996 0.000 0.000 0.000 0.000 1997 0.000 0.000 0.000 0.000 1998 0.000 0.000 0.000 0.000 1999 0.000 0.000 0.000 0.000 2000 0.000 0.000 0.000 0.000 2001 0.000 0.000 0.000 0.000 2002 0.000 0.000 0.000 0.000 2003 0.000 0.000 0.000 0.000 2004 0.000 0.000 0.000 0.000 2005 0.000 0.000 0.000 0.000
Table D-10 Hogchoker Indices of Annual Abundance Based on Fall Juvenile Survey, 1974-2005 Fall Juvenile Survey Juvenile Index Std. Err.
1974 0.147 0.033 1975 2.748 1.910 1976 0.021 0.017 1977 2.089 1.393 1978 1.925 0.806 1979 0.786 0.172 1980 0.620 0.183 1981 2.735 0.775 1982 0.975 --
1983 6.789 4.522 1984 1.767 0.428 1985 1.396 0.257 1986 3.298 1.587 1987 2.227 0.568 1988 7.832 0.914 1989 1.318 0.406 1990 1.728 1.024 1991 6.772 4.728 1992 0.502 0.234 1993 1.189 0.308 1994 10.079 1.418 1995 0.878 0.333 1996 0.295 0.066 1997 0.026 0.026 1998 0.932 0.129 1999 0.145 0.136 2000 0.983 0.363 2001 1.264 0.426 2002 0.956 0.346 2003 0.511 0.508 2004 0.319 0.079 2005 1.873 0.785
Table D-11 Spottail Shiner Indices of Annual Abundance Based on Beach Seine Survey, 1974-2005 Beach Seine Survey Juvenile Index Std. Err.
1974 6.406 1.419 1975 13.648 3.194 1976 9.211 1.452 1977 4.860 1.112 1978 12.232 1.725 1979 8.562 1.357 1980 6.785 1.281 1981 19.134 3.977 1982 4.991 0.815 1983 11.890 3.007 1984 8.202 1.942 1985 4.916 0.780 1986 4.629 1.165 1987 5.868 1.403 1988 4.663 0.722 1989 6.626 1.472 1990 9.098 1.505 1991 11.223 1.880 1992 6.987 1.066 1993 6.379 0.797 1994 14.684 2.022 1995 4.875 0.696 1996 1.681 0.632 1997 11.880 1.742 1998 2.478 0.568 1999 24.848 5.432 2000 2.287 0.634 2001 19.556 4.314 2002 12.833 1.847 2003 25.669 4.877 2004 8.613 1.323 2005 13.370 4.976
Table D-12 White Catfish Indices of Annual Abundance Based on Beach Seine Survey, 1974-2005 Beach Seine Survey Yearling and Older Index Std. Err.
1974 0.034 0.020 1975 0.021 0.011 1976 0.030 0.010 1977 0.072 0.022 1978 0.069 0.030 1979 0.054 0.028 1980 0.023 0.008 1981 0.050 0.029 1982 0.048 0.026 1983 0.064 0.044 1984 0.019 0.006 1985 0.010 0.005 1986 0.026 0.012 1987 0.031 0.015 1988 0.049 0.018 1989 0.123 0.056 1990 0.010 0.005 1991 0.016 0.008 1992 0.005 0.003 1993 0.013 0.009 1994 0.002 0.002 1995 0.012 0.008 1996 0.028 0.016 1997 0.002 0.001 1998 0.028 0.022 1999 0.000 0.000 2000 0.004 0.003 2001 0.002 0.002 2002 0.009 0.008 2003 0.002 0.001 2004 0.001 0.001 2005 0.000 0.000
Table D-13 Weakfish Indices of Annual Abundance Based on Fall Juvenile Survey, 1979-2005 Fall Juvenile Survey Juvenile Index Std. Err.
1979 0.133 0.070 1980 0.599 0.284 1981 0.215 0.125 1982 0.663 0.306 1983 0.125 0.088 1984 1.588 0.633 1985 0.977 0.481 1986 0.294 0.105 1987 0.253 0.180 1988 1.444 0.599 1989 0.763 0.248 1990 0.149 0.090 1991 0.100 0.061 1992 0.025 0.017 1993 0.252 0.149 1994 0.130 0.058 1995 0.229 0.128 1996 0.213 0.160 1997 0.156 0.053 1998 0.377 0.277 1999 0.117 0.047 2000 0.167 0.115 2001 0.019 0.009 2002 0.007 0.007 2003 0.095 0.049 2004 0.094 0.062 2005 0.014 0.014
Table D-14 Bluefish Indices of Annual Abundance Based on Beach Seine Survey, 1974-2005 Beach Seine Survey Juvenile Index Std. Err.
1974 0.712 0.210 1975 0.283 0.074 1976 0.189 0.028 1977 0.325 0.097 1978 0.350 0.075 1979 0.217 0.054 1980 0.303 0.053 1981 0.464 0.119 1982 0.295 0.059 1983 0.320 0.101 1984 0.153 0.034 1985 0.245 0.068 1986 0.127 0.054 1987 0.173 0.049 1988 0.176 0.027 1989 0.176 0.043 1990 0.237 0.053 1991 0.156 0.043 1992 0.133 0.050 1993 0.098 0.033 1994 0.058 0.017 1995 0.182 0.043 1996 0.036 0.012 1997 0.185 0.028 1998 0.155 0.026 1999 2.660 1.116 2000 0.065 0.027 2001 0.692 0.242 2002 0.863 0.300 2003 0.204 0.073 2004 0.103 0.037 2005 0.214 0.071