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1 34 3 Vol. 34, No ACTA HYDROBIOLOGICA SINICA May, DOI: /SP.J ,2 闫福桂王海军王洪铸张堂林,2 李为 (., ; 2., 00049) COMMUNITY CHARACTERISTICS OF MEIOFAUNA IN AN ALGAE-DOMINATED SHALLOW LAKE, WITH A DISCUSSION ON THE ECOLOGICAL ROLE YAN Fu-Gui, 2, WANG Hai-Jun, WANG Hong-Zhu, ZHANG Tang-Lin and LI Wei,2 (. Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan ; 2. Graduate University of Chinese Academy of Sciences, Beijing 00049) : ; ; ; Key words: Meiofauna; Community Characteristics; Ecological Role; the Eastern Tangsunhu Lake 中图分类号 : Q 文献标识码 : A 文章编号 : (200) (Meiofauna) 0.5 mm.0 mm (.0 mm), mm, [,2],,, [2,3] [3,4], [5,6],, [2],,,. (E N ) 7 km, 0.0 km 2,,,,,,,, , ( ) ( ).2 ( 50 cm), 0 5 cm 5 0 cm,, 4%,.0 mm mm,.5 Ludox-TM,,, 收稿日期 : ; 修订日期 : 基金项目 : ( KZCX-YW-4-); ( KZCX2-YW ); ( 2006BAD03B BAD37B03) 作者简介 : (982 ),,, ; ; yanfugui234@eyou.com 通讯作者 :, wanghz@ihb.ac.cn

2 3 : 635 a.3 V=530LW 2 (L, ; W, ),.3 [7,8] ; W=0.0285L (L, ), mg [9] ; [0,] P/B=9, /4 [,2] Excel 2003 SPSS , ;, 8, %, (8.4%) (8.3%)(0.7%) Fig. Distribution of the sampling sites in the Eastern Tangsunhu Lake Tab. 表东汤孙湖环境参数 ( 均值 ± 标准误 ) Environmental parameters (mean ± SE) of the Eastern Tangsunhu Lake Environmental parameters Spring Summer Autumn Winter Z M (m) 2.4± ± ±0.04.9±0.04 Z SD (m) 0.76± ± ±0.5 Temperature ( ) 9.4± ±0. 2.7± ±0. TN (mg/l) 2.52± ± ± ±0.6 TP (mg/l) 0.08± ± ± ±0.0 a Chla (μg/l) 30.9± ± ± ±4.5 Nematoda Ethmolaimidae Ethmolaimus pratensis Monhysteridae Monhysteridae sp. Xyalidae Daptonema sp. Ironidae Ironus sphincterus Tobrilidae Tobrilus gracilis Tobrilus helveticus Epitobrilus allophysis Tobrilidae sp. Dorylaimidae Dorylaimus stagnalis Mesodorylaimus flavomaculatus Mesodorylaimus sp. Rotifera Oligochaeta Cladocera Ostracoda Cypridae Candona sp. Cyclocypris sp. Copepoda Cyclopidae Macrocyclops sp. Eucyclops serrulatus Eucyclops speratus Paracylops fimbriatus Paracylops sp. Microcyclops sp. Mesocyclops sp. Cyclopidae sp. Insecta Chironomidae sp

3 Tab. 2 表 2 东汤孙湖小型底栖动物与大型底栖动物的密度生物量 ( 湿重 ) 和生产量的比较 Comparison of the density, wet biomass and production of meiofauna with those of macrofauna in the Eastern Tangsunhu Lake Density Biomass Production Taxa ind/m 2 (±SE) % g/m 2 (±SE) % g/m 2 a Nematoda (0.±6.4) ± Meiofauna Rotifera (.0±0.4) ± Oligochaeta (2.9±.2) ± Ostracoda (2.8±.) ± Cladocera (.0±0.6) ± Copepoda (28.3±6.5) ± Insecta (0.5±0.3) ± Others (.8±.) ± Total (39.5±5.6) ± Oligochaeta 65.6± ± Macrofauna Mollusca 6.8± ± Insecta 575.2± ± Others 5.± ± Total 762.4± ± / Meiofauna/Macrofauna , 72.5%, 63.8%;, 20.3%, 8.%, 2, 83, 4.9% 37.5% ( 2) One-Way ANOVA, (F=0.68, P=0.58)(F=.44, P=0.27) (43.9±6.3) 0 3 ind/m 2, 3.6% One-Way ANOVA, (F=5.88, P=0.6) 3 Fig. 3 Vertical distribution of meiofauna density in the Eastern Tangsunhu Lake 2 Fig. 2 Seasonal dynamics of meiofauna density in the Eastern Tangsunhu Lake cm (95.6±.7) 0 3 ind/m 2, 68.4%; 5 0 cm 2.4 6, ( Lake Pääjärvi Lake Michigan Mirror Lake, 9

4 3 : 637 Fig. 4 4 (A) (B) Relationships of meiofauna density with Secchi depth(a)and total phosphorus(b) ) [6, 2 6], () (00 300) 0 3 ind/m 2 ; (2) ; (3), (), ( 2); (2) 0 5cm 68.4%, (0 5cm 6.2% 98.5%), Lake Pääjärvi(0 2cm 95%) [, 2] (2.3m) (2.2m), 3, 6 (Lake Dl.Snidzinys Lake Snidzinys Lake Becheru Lake Rogajzu Lake Vorcalu Lake Slejnovas) [6, 6],, 4.9%, P/B [, 2], 37.5% 3 [6], kj/m 2 a, ,, [6], Lake Vorcalu, ( 3) ( ) 86.7%( 2), 表 3 不同湖泊小型底栖动物生产量 (P) 及小型与大型底栖动物生产量之比 (P Meio /P Macro ) Tab. 3 Productions (P) of meiofauna and production ratios of meiofauna to macrofauna (P Meio /P Macro ) in different lakes Lakes (P) P Meio /P Macro kj/m 2 a Small shallow lakes Large deep lakes Eastern Tangsunhu Lake Lake Dl.Snidzinys Lake Snidzinys Lake Becheru Lake Rogajzu Lake Vorcalu 0..3 Lake Slejnovas Lake Onega Lake Päijänne Lake Ladoga Lake Constance (63.7%),, [3,5,6],,,, 致谢 : : [] Higgins R P, Thiel H. Introduction to the Study of Meiofauna [M]. Washington D C: Smithsonian Press. 988, 488 [2] Giere O. Meiobenthology [M]. Berlin: Springer-Verlag.

5 , 327 [3] Rundle S D, Robertson A L, Schmid-Araya J M. Freshwater Meiofauna: Biology and Ecology [M]. Leiden: Backhuys Publishers. 2002, 369 [4] Hakenkamp C C, Morin A. The importance of meiofauna to lotic ecosystem functioning [J]. Freshwater Biology, 2000, 44: [5] Wu J H, Liang Y L. A comparative study of benthic nematodes in two Chinese lakes with contrasting sources of primary production [J]. Hydrobiologia, 999, 4: 3 37 [6] Wu J H, Fu C Z, Liang Y L, et al. Distribution of the meiofauna community in a eutrophic shallow lake of China [J]. Archiv für Hydrobiologie, 2004, 59(4): [7] Wieser W. Benthic studies in Buzzards Bay. II. The meiofauna [J]. Limnology and Oceanography, 960, 5: 2 37 [8] Vincx M. Seasonal fluctuations and production of nematode communities in the Belgian coastal z-one of the North Sea [M]. Verhanelingen Van Het Symposium Invertebraten Van Belgie P. 989, [9] Chen X M. Biomass calculation of freshwater copepoda [J]. Acta Hydrobiologica Sinica, 98, 47(3): [.., 98, 47(3): ] [0] Juario V J. Nematode species composition and seasonal fluctuation of a sublittoral meiofauna community in the German Bight [J]. Veroff Inst Mecresforsch Bremerh, 975, 5: [] Widbom B. Determination of average individual dry weights and ash-free dry weights in different sieve fractions of marine meiofauna [J]. Marine Biology, 984, 84: 0 08 [2] Holopainen I J, Paasivirta L. Abundance and biomass of the meiozoobenthos in the oligotrophic and mesohumic lake Pääjärvi, southern Finland [J]. Annales Zoologici Fennici, 977, 4: [3] Anderson R S, DeHenau A M. An assessment of the meiobenthos from nine mountain lakes in western Canada [J]. Hydrobiologia, 980, 70: [4] Nalepa T F, Quigley M A. Abundance and biomass of the meiobenthos in nearshore Lake Mich-igan with comparisons to the macrobenthos [J]. Journal of Great Lakes Research, 983, 9(4): [5] Strayer D. The benthic micrometazoans of Mirror Lake, New Hampshire [J]. Archiv für Hydrobiologie (Supplement), 985, 72: [6] Kurashov E A. The role of meiofauna in lake ecosystems [J]. Aquatic Ecology, 2002, 36:

2 : 111 ( Pinctada maxima), 13, 11,,,,,, 15, 25 cm, cm, 4 5 kg 1-2],,, 3-7] 24] 25-26],,, ] min, 1, 5 m 4 m, 20 m , 9-22],,, (

2 : 111 ( Pinctada maxima), 13, 11,,,,,, 15, 25 cm, cm, 4 5 kg 1-2],,, 3-7] 24] 25-26],,, ] min, 1, 5 m 4 m, 20 m , 9-22],,, ( 12 2 2 0 1 6 4 South China Fisheries Science Vol. 12, No. 2 Apr., 2016 doi: 10. 3969/ j. issn. 2095-0780. 2016. 02. 016,,,, (,,, 510300) : ( Pinctada maxima),,,, 54. 55%, 0 0. 25 m - 2, 0 70. 31 gm - 2,