Chinese Journal of Zoology 2008,43 (1) :63 68 ( 200090 ; 200090 ; 242000) : 2002 7 2004 7, 12, 39, 3 28 2003, 2004, ( Corbicula fluminea) ( Bellamya purificata) ( B1 aeruginosa) ( Alocinma longicornis Shannon2 Wiener Margalef Pielou 0183 0151 0177,,, : ; ; ; :Q958 :A :025023263 (2008) 01263206 Community Structure of Macrozoobenthos in Lake Nanyi, Anhui CHEN Li2Jing PENG Zi2Ran SUN Jia2Ping WANG Wu YANG Yi2Hui CHEN Hua ( Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Fisheries University, Ministry of Education, Shanghai 200090 ; Key Laboratory of Aquatic Genetic Resources and Aquacultural Ecology Certificated by the Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090 ; Fisheries Bureau of Xuancheng,Anhui 242000, China) Abstract :Macrozoobenthic community was investigated seasonally at 12 sampling stations in Lake Nanyi of Anhui,from July 2002 to July 2004 for providing academic data for rational utilization of aquatic resources and ecological strategy for fishery resources. A total of 39 species were obtained. The highest biomass and density were presented in the winter of 2003 and the lowest density in the summer of 2004. Mollusca was by far the most dominant group,its dominant species were Corbicula fluminea, Bellamya purificata, B. aeruginosa and Alocinma longicornis. The annual average value of Shannon2Wiener diversity index, Margalef diversity index and Pielou index were 0183, 0151 and 0177 respectively. The results showed that the species number, biodiversity, standing stock of macrozoobenthos community were much higher in the west than in the east of the lake. After the construction of a reservoir,the ecological characteristics of macrozoobenthos in the lake changes very much,which results in the significant drop of the standing stock of the macrozoobenthos. Key words :Lake Nanyi ; Macrozoobenthos ; Community structure ; Biodiversity (118 56 E,31 35 N),,, ;,, ( Corbicula fluminea) 14814 km 2,,,,, ( Y1101) ; ( 052226), (02224) ;,,, ; : ; E2mail :ljchen @shfu. edu. cn :2007206208, :2007209218
64 Chinese Journal of Zoology 43,2004 [1 ],, 6617 km 2,,,, 7 % 24 h, 75 % 80 %,, [4 ],, 113 Jgrgensen S = 2 c/ ( a + b) Jaccard S J = c/ ( a + b - c) [2,3],, a ; b 1 111 12 1 5, 6 12 2002 7 ( ) 10 ( ) 2003 1 ( ) 4 ( ) 7 ( ) 10 ( ) 2004 4 ( ) 7 ( ) 2004, 112 1Π16 m 2, 0145 mm ; c S 0 0125, 0125 015, 015 0175, 0175 110 Shannon2Wiener H = - ( n iπn) ln ( n i ΠN), Margalef D = ( S - 1)Πln N,Pielou J = H Πln S [5 7 ], N, S, n i i 2 1 Fig11 Map of Lake Nanyi and sampling stations 11 ; 21 ; 31 ; 41 ; 51 ; 6. ; 7. ; 8. ; 9. ; 10. ; 11. ; 12. 1. The outfall of Mashanbu ; 2. Hydrilla verticillata ; 3. Water caltrop ; 4. The water inlet of Shuangqiao ; 5. Watershed ; 6. Xujiazui ; 7.Lihudang ; 8. Centre of west of Lake Nanyi ; 9. Daxibian ; 10. Xinlangchuang estuary ; 11. Xingfu manor ; 12. Laolangchuan estuary. 211 21111, 39, 3 28 ( 1) [8 11 ] 18 29, 6 6, 4 4, 7414 % 1514 % 1013 % ( Bellamya purificata) ( B. aeruginosa) ( Alocinma longicornis), 38 % 34 % 29 % 14 % 2 21112 1,
1 : 65 1 Table 1 Composition of macrozoobenthos community of Lake Nanyi Species The west The east Species The west Mollusca L. leai + Bellamya purificata + + L. cornum2lunae + B. quadrata + + Acuticosta trisulcata + B. aeruginosa + + Chistodesmus lampreyanus + B. lapidea + Unio douglasiae + Cipangopaludina hinensis + U. persculpta + Parafossarulus sinensis + + Anodonta woodiana + P. eximinsa + + A. woodiana elliptica + Bithynia fuchsiana + + Corbicula fluminea + + Lymnaea stagnalis + Annelida Alocinma longicornis + Branchiura sowerbyi + Semisulcospira cancellata + Tubifex sp. + + Radix auricularia + Hirudo nipponia + + R. swinhoei + Limnodrilus hoffmeisteri + Hippeutis cantori + Neanthes japonica + H. umbilicalis + Tylorrhynchus heterochaeta + Segmentina hemisphaerula + Arthropoda Limnoperna lacustris + + Pelopia sp. + + Margaritana dahurica + Prodadius sp. + + Parreysia aurora + Chlronomus sp. + Lamprotula caveata + Caridina nilotica gracilipes + + + Show existence. 35, 28, 4, 2, 1 ; 16, 9, 4, 3 12 Jgrgensen : S = 12 2/ (35 + 16) = 0147 Jaccard : S J = 12/ (35 + 16-12) = 0131 ( - ) Time ( Year - Month) The east 212, 6813 % 10010 %,,, 97190 % 100100 %, 2 ( %) Table 2 The percentage of density and biomass of different macrozoobenthic groups in Lake Nanyi Mollusca Annelida Other group Density Biomass Density Biomass Density Biomass 2002-7 9419 99194 415 0104 016 0102 2002-10 9712 99195 211 0102 017 0103 2003-1 8413 99167 313 0128 1214 0105 2003-4 10010 100100 2003-7 6813 99180 2919 0107 118 0113 2003-10 8712 99196 1218 0104 2004-4 9011 97190 919 2110 2004-7 8013 99196 1917 0104
66 Chinese Journal of Zoology 43 2, 2003 2004, 2004 (3216 gπm 2 ) (3811 gπm 2 ) 2003,, 3 ; > > > 2002 2003,2004 2003 2 Fig. 2 Seasonal changes of density and biomass of macrozoobenthos in Lake Nanyi 213 3 1 4 5 6, 14913 20913 29912 13514 18217 ind1πm 2 1 4 5 6, 32016 46516 32515 38017 gπ m 2 1,,, 3, 3 11,, (17219 ind1πm 2 ) (25711 gπm 2 ) (5912 ind1πm 2 ) (11411 gπm 2 ) 214 3 3 Fig. 3 Annual density and biomass of macrozoobenthos at sampling stations in Lake Nanyi,, Shannon2Wiener,Margalef, H 0114 1151, 0183 ; D 0119 1120, 0151, 0177 H D 0190 0156, 0175 0146,, J 0178, 0177 3,,,, [12 ],,,,, [9 ],,
1 : 67 3 H D J (2002 7 2004 7 ) Table 3 The distribution of Shannon2Wiener,species richness and evenness indices of ( - ) Time ( Year - Month) macrozoobenthos in Lake Nanyi from 2002,7 to 2004,7 Sampling station 1 2 3 4 5 6 7 8 9 10 11 12 2002-7 H 1151-0199 1102 0124-0150 - 0133 0169 0164 - D 0199-0147 0179 0122-0129 - 0124 0139 0134 - J 0194-0190 0163 0135-0172 - 0147 1100 0192-2002 - 10 H 1128 0164 0156 1112 0166 0114 0199 0169 0169 0167 0194 - D 0177 0127 0131 0153 0123 0119 0164 0131 0140 0136 0158 - J 0179 0192 0181 0180 0195 0121 0171 1100 0164 0161 0167-2003 - 1 H 1147 0197 1124 1133 0153 0157 1165 0141 0164 D 1122 0193 0190 1106 0139 0142 1116 0126 0134 J 0171 0154 0169 0164 0148 0151 0185 0159 0192 2003-4 H 0178 0169 0181 0113 0143 0115 0169 - - - - 0141 D 0142 0139 0155 0118 0123 0119 0139 - - - - 0126 J 0171 1100 0158 0119 0162 0122 1100 - - - - 0159 2003-7 H - 0145-1114 1165 0156 0193 0187 0185 1121 0150 0192 D - 0123-0169 0193 0131 0163 0156 0163 0176 0124 0143 J - 0157-0183 0192 0181 0167 0163 0162 0188 0172 0184 2003-10 H 1139 1105 0135 1138 1152 1116 1133-1103 1101 1128 - D 1105 0158 0125 0175 0199 0165 0186-0161 0155 0179 - J 0172 0196 0150 0186 0195 0184 0196-0195 0192 0192-2004 - 4 H 1110 0195-0156 0160 0169 1105 - - 0150 1121 0169 D 0168 0158-0131 0126 0139 0158 - - 0129 0176 0139 J 1100 0186-0181 0186 1100 0196 - - 0172 0188 1100 2004-7 H - - 0169 - - 1101-0150 - - - - D - - 0139 - - 0155-0129 - - - - J - - 1100 - - 0192-0172 - - - - - 1, - Show number of species is one,so diversity index can t be calculated1,, 3 10,6 7 6,,,,, 2004 2003, 2004, [3,13,14 ], Shannon2Wiener Margalef,,,,,,,, : ;,, ;
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