APPENDICES FOR ONLINE PUBLICATION ONLY
Appendix A. Diet Composition Matrix of the Beibu Gulf Model
Prey¥Predators / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 / 16 / 17 / 18 / 191 Benthic producers / 0.09 / 0.12 / 0.086 / 0.005 / 0.06 / 0.04
2 Phytoplankton / 0.7 / 0.15 / 0.1 / 0.135 / 0.05 / 0.003 / 0.004 / 0.01
3 Coral / 0.0005
4 Zooplankton / 0.6 / 1 / 0.02 / 0.08 / 0.399 / 0.29 / 0.68 / 0.465 / 0.406 / 0.384 / 0.284
5 Jellyfish / 0.032 / 0.117 / 0.051 / 0.003
6 Zoobenthos / 0.08 / 0.25 / 0.281 / 0.48 / 0.147 / 0.051 / 0.235 / 0.2 / 0.411
7 Bent. crustaceans / 0.05 / 0.025 / 0.164 / 0.115 / 0.21 / 0.045 / 0.12
8 Penaeid prawns / 0.1 / 0.005 / 0.06 / 0.063 / 0.03 / 0.071 / 0.167 / 0.124 / 0.065 / 0.009 / 0.04
9 Cephalopods / 0.07 / 0.015 / 0.018 / 0.03 / 0.074 / 0.055 / 0.046 / 0.08
10 Small pelagic fishes / 0.03 / 0.153 / 0.225 / 0.032 / 0.048 / 0.087 / 0.16 / 0.005 / 0.168
11 Med. pelagic fishes / 0.112 / 0.05 / 0.135 / 0.22 / 0.195
12 Large pelagic fishes / 0.001 / 0.054 / 0.098 / 0.31 / 0.08
13 Small demersal fishes / 0.011 / 0.164 / 0.389 / 0.045 / 0.003
14 Med.demersal fishes / 0.065 / 0.214 / 0.147 / 0.23 / 0.19
15 Large demersal fishes / 0.118 / 0.1 / 0.06 / 0.24
16 Rays and Skates / 0.002 / 0.065 / 0.001
17 Elasmobranchs / 0.023
18 Fish-eating birds / 0.011
19 Mar. mammals
20 Detritus / 0.4 / 0.3 / 0.75 / 0.58 / 0.2 / 0.062 / 0.023 / 0.091 / 0.003
Sum / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00 / 1.00
Diet is expressed as the fraction each prey contributes to the overall diet.
Appendix B. Input of Annual Fishery Landings
Landing ( t·km-2)Group Name¥gear / DT / Gillnets / Handlines / PS / MISC / Total
Benthic producers / 0
Phytoplankton / 0
Coral / 0
Zooplankton / 0
Jellyfish / 0.026 / 0.026
Zoobenthos / 0
Benthic crustacean / 0.32 / 0.02 / 0.003 / 0.05 / 0.393
Penaeid prawns / 0.56 / 0.17 / 0.001 / 0.731
Cephalopods / 0.55 / 0.08 / 0.35 / 0.16 / 0.06 / 1.2
Small pelagic fish / 0.58 / 0.56 / 0.05 / 0.62 / 0.08 / 1.89
Medium pelagic fish / 0.26 / 0.36 / 0.08 / 0.43 / 0.11 / 1.24
Large pelagic fish / 0.01 / 0.02 / 0.001 / 0.002 / 0.01 / 0.043
Small demersal fish / 1.49 / 0.89 / 0.06 / 0.126 / 0.05 / 2.616
Medium demersal fish / 0.54 / 0.22 / 0.135 / 0.08 / 0.189 / 1.164
Top demersal feeders / 0.03 / 0.02 / 0.001 / 0.002 / 0.01 / 0.063
Rays and Skates / 0.003 / 0.002 / 0.0015 / 0.007
Elasmobranchs / 0.0002 / 0.00041 / 0.00015 / 0.001
Fish-eating Seabirds / 0
Marine mammals / 0
Detritus / 0
Sum / 4.369 / 2.342 / 0.677 / 1.426 / 0.559 / 9.373
DT-Demersal trawl; PS- Purse Seines ; MISC - Miscellaneous
Appendix C. Sensitivity Analysis of the Beibu Gulf 1997-1999 Ecopath Model
Input group noInput parameters / 2
B
Q/B / 4
B
Q/B / 5
Q/B
EE / 6
P/B
B / 7
B
Q/B / 8
B
Q/B / 9
B
Q/B / 10
B
Q/B / 11
B
Q/B / 12
B
Q/B / 13
P/B
Q/B / 14
B
Q/B / 15
B
Q/B / 16
B
P/B / 17
B
Q/B / 18
B
Q/B / 19
B
Q/B
No. output parameter / EE / EE / B / EE / EE / EE / EE / EE / EE / EE / EE / EE / EE / EE / EE / EE / EE
1 Benthic producers / 0.333
2 Phytoplankton / 0.333 / 0.460 / 0.385 / 0.263
3 Coral
4 Zooplankton / 0.325 / 0.521 / 0.215 / 0.236 / 0.414 / 0.252 / 0.356
5 Jellyfish / 0.240 / 0.325
6 Zoobenthos / 0.333 / 0.221
7 Bent. crustaceans / 0.950 / 0.326 / 0.784 / 0.218
8 Penaeid prawns / 1.000 / 0.325 / 0.413
9 Cephalopods / 0.333 / 1.00
10 Small pelagic fishes / 0.521 / 0.892 / 0.205
11 Med. pelagic fishes / 0.892
12 Large pelagic fishes / 0.483 / 0.310 / 0.352
13 Small demersal fishes / 0.215 / 0.352 / 0.856 / 0.368
14 Med.demersal fishes / 0.212 / 0.658 / 0.325 / 0.265
15 Large demersal fishes / 0.441 / 0.458
16 Rays and Skates / 0.324
17 Elasmobranchs / 1.000
18 Fish-eating birds / 0.333
19 Mar. mammals / 0.333
Sensitivity of parameters is given as a result of 50% increase in input parameter. Sensitivity less than±0.20, or effects on others parameters of the input parameter group are not shown. Sensitivity is expressed as (estimated parameter – original parameter)/ original parameter.