周健等 : 后生浮游动物摄食对太湖夏季微囊藻水华形成的作用 399 lankton especially large metazooplankton promoted the formation of Microcystis blooms The experiment also suggested

Size: px

Start display at page:

Download "周健等 : 后生浮游动物摄食对太湖夏季微囊藻水华形成的作用 399 lankton especially large metazooplankton promoted the formation of Microcystis blooms The experiment also suggested"

尔锯居
7 years ago
Views:

1 J Lake Sci( 湖泊科学 ),2013,25( 3) : http: // www jlakes org jlakes@niglas accn 2013 by Journal of Lake Sciences * 周健 1, 杨桂军 1**, 秦伯强 2, 张光生 1, 王丽君 1, 高映海 1, 李鸿毅 1, 陈满意 1 3, 钟春妮 d 3 21 ~ 30 d Microcystis wesenbergii Microcystis flos-aquae 60 79% Effect of the ingestion of metazooplankton on the formation of Microcystis blooms in summer in Lake Taihu ZHOU Jian 1 YANG Guijun 1 QIN Boqiang 2 ZHANG Guangsheng 1 WANG Lijun 1 GAO Yinghai 1 LI Hongyi 1 CHEN Manyi 1 & ZHONG Chunni 3 1 School of Environment and Civil Engineering Jiangnan University Wuxi P R China 2 State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing P R China 3 Wuxi Taihu Lake Management Co Ltd Wuxi P R China Abstract In order to understand the effects of the ingestion of metazooplankton on the formation of Microcystis blooms in summer in Lake Taihu a field simulation experiment had been carried out by taking water samples from the Meiliang Bay in Lake Taihu from July 15 to August During the period visible Microcystis blooms floating on the water surface were found in the controls which did not filter out metazooplankton but Microcystis blooms were not found in the treatments which had filtered out metazooplankton Nine species of metazooplankton were found in the controls and three species of metazooplankton in the treatments during the whole experiment Metazooplankton were found in the treatments in the sixth days of the experiment The zooplankton biodiversity H analysis showed that the value of H in the controls was significantly higher than that in the treatments During the later stage of experiment days the average density of Microcystis spp in the controls was significantly higher than those in the treatments During the experiment the density of Microcystis wesenbergii and Microcystis flos-aquae in the controls were significantly higher than those in the treatments and Microcystis wesenbergii contributed 60 79% of the total Microcystis abundance in the controls The results showed that the ingestion of metazooplankton could not control the Microcystis blooms on the contrary metazoop- * ** ZX ZX zhou3736@ yahoo com cn yanggj1979@ 163 com

2 周健等 : 后生浮游动物摄食对太湖夏季微囊藻水华形成的作用 399 lankton especially large metazooplankton promoted the formation of Microcystis blooms The experiment also suggested that the community structure of metazooplankton was an important factor in affecting the formation of Microcystis blooms Keywords Metazooplankton ingestion Lake Taihu cyanobacteria Microcystis blooms Brooks 6 - Size-Efficiency Hypothesis L L 10 L 80 L 50 5 cm 60 0 cm 48 μm 10 L 80 L 70 L 3 TN TP TN TP TN = 5 mg /L TP = 0 2 mg /L KNO 3 NH 4 Cl = 1 1 KH 2 PO d d 500 ml 1% 5 L 48 μm 50 ml 50 ml 4% 6 d 1

3 400 J Lake Sci ( 湖泊科学 ),2013,25( 3) 200 ml TN TP TN = 5 mg /L TP = 0 2 mg /L ml 5 ml Shannon-Wiener H H = - S i = 1 P i log 2 P i P i = n i /N 1 n i i N S 1 5 t lg x + 1 Pearson SPSS ind /L 9 1a b Lecane sp Brachionus calyciflorus Brachionus angularis Shannon-Wiener H = 1 11 H = 0 46 P < L a b Fig 1 Changes of metazooplankton composition and numbers in controls a and treatments b during the experiment 2488 ind /L 1380 ind /L P > P >

4 周健等 : 后生浮游动物摄食对太湖夏季微囊藻水华形成的作用 % 100% 2 a b Fig 2 Changes of water temperature a and the comparison of metazooplankton biodiversity in controls and treatments b during the experiment % 82 6% cells /L Microcystis wesenbergii 30 8% cells /L cells /L P > 0 05 P > 0 05 P < a b Fig 3 Changes of phytoplankton composition and density in controls a and treatments b during the experiment 4 21 ~ 30 d P <

5 402 J Lake Sci ( 湖泊科学 ),2013,25( 3) 4a 58 3% Microcystis flos-aquae cells /L cells /L 4b P < Microcystis aeruginosa cells /L cells /L P > a b Fig 4 Changes of Microcystis composition and density in controls a and treatments b during the experiment 1 t-test Tab 1 Result of t-test for the density of phytoplankton and numbers of metazooplankton in controls and treatments t t t ~ 30 d * ~ 18 d ~ 30 d * ** * * * P < 0 05 ** P < Pearson lg x + 1 Pearson P < 0 01 P > 0 05 P < 0 05 P < Tab 2 Pearson s correlation between abundance of metazooplankton and density of phytoplankton during the experiment ** * ** * * * ** * P < 0 05 ** P < 0 01

6 周健等 : 后生浮游动物摄食对太湖夏季微囊藻水华形成的作用 % Wilson μm 60 μm 35 Edgar ~ 30 d P < d 48 μm Chen YW Qin BQ Teubner K et al Long-term dynamics of phytoplankton assemblages Microcystis-domination in Lake Taihu a large shallow lake in China Journal of Plankton Research Flores-Burgos J Sarma SSS Nandini S Effect of single species or mixed algal Chlorella vulgaris and Scenedesmus acutus diets on the life table demography of Brachionus calyciflorus and Brachionus patulus Rotifera Brachionidae Acta Hydrochimica et Hydrobiologica Kim HW Hwang SJ Joo GJ Zooplankton grazing on bacteria and phytoplankton in a regulated large river Nakdong River Korea Journal of Plankton Research Modenutti B Queimaliňos C Balseiro E et al Impact of different zooplankton structures on the microbial food web of a

7 404 J Lake Sci ( 湖泊科学 ),2013,25( 3) South Andean oligotrophic lake Acta Oecologica Robert JR Uwe K Effects of a filter-feeding fish silver carp Hypophthalmichthys molitrix Val on phyto-zooplankton in a mesotrophic reservoir results from an enclosure experiment Freshwater Biology Brooks JL Dodson SI Predation body size and composition of plankton Science DeMott WR Relations between filter mesh-size feeding mode and capture efficiency for cladocerans feeding on ultrafine particles Arch Hydrobiol Beth DeMott WR Feeding selectivities and relative ingestion rates of Daphnia and Bosmina Limnol & Oceanogr Lehman JT Release and cycling of nutrients between planktonic algae and herbivores Limnol & Oceanogr Elser JJ Hassett RP A stoichiometric analysis of the zooplankton-phytoplankton interaction in marine and freshwater ecosystems Nature George DG Reynolds CS Zooplankton-phytoplankton interactions The case for refining methods measurements and models Aqua Ecol Haney JF Field studies on zooplankton-cyanobacteria interactions N Zeland J Mar Freshwater Res Lampert W Laboratory studies on zooplankton-cyanobacteria interactions N Zeland J Mar Freshwater Res Brett MT Müller-Navarra DC The role of highly unsaturated fatty acids in aquatic food-web processes Freshwater Biol Burns CW Planktonic interactions with an austral bias Implications for biomanipulation Lakes and Reservoirs Research and Management Drenner RW Hambright KD Biomanipulation of fish assemblages as a lake restoration technique Archiv für Hydrobiologie Burkert U Hyenstrand P Drakare S et al Effects of the mixotrophic flagellate Ochromonas sp on colony formation in Microcystis aeruginosa Aquatic Ecology Jang MH Ha K Joo GJ et al Toxin production of cyanobacteria is increased by exposure to zooplankton Freshwater Biology Shapiro J Wright DI Lake restoration by biomanipulation Round Lake Minnesota the first two years Freshwater Biol Carvalho L Top-down control of phytoplankton in a shallow hypertrophic lake Little Mere England Hydrobiologia Burns CW The relationship between body size of filter-feeding Cladacera and the maximum size of particle ingested Limnol & Oceanogr Porter KG The plant-animal interf ace in freshwater ecosystems American Scientist Gliwicz ZM Food size selection and seasonal succession of filter feeding zooplankton in a eutrophic lake Ekologia Polska Jacobs J Quantitative measurement of food selection-a modification of the forage ratio and Ivlev's Electivity Index Oecologia Richman S Dodson SI The effect of food quality on feeding and respiration by Daphnia and Diaptomus Limnol & Oceanogr Cowles TJ Olson RJ Chisholm SW Food selection by copepods discrimination on the basis of food quality Marine Biology DeMott WR The role of taste in food selection by freshwater zooplankton Oecologia Huntley M Sykes P Rohan S et al Chemically-mediated rejection of dinoflagellate prey by the copepods calanus pacifi-

8 周健等 : 后生浮游动物摄食对太湖夏季微囊藻水华形成的作用 405 cus and paracalanus parvus mechanism occurrence and significance Mar Ecol Prog Ser Wilson AE Sarnelle O Tillmanns AR Effects of cyanobacterial toxicity and morphology on the population growth of freshwater zooplankton Meta-analyses of laboratory experi ments Limnol & Oceanogr Geller W Muller H The filtration apparatus of cladocera Filter mesh-sizes and their implications on food selectivity Oecologia Berlin Dawidowicz P Effectiveness of phytoplankton control by large-bodied and small-bodied zooplankton Hydrobiologia 36 Edgar NB Green JD Calanoid copepod grazing on phytoplankton seasonal experiments on natural communities Hydrobiologia Robats RD Zohary T Microcystis aeruginosa and underwater light attenuation on a hypertrophic lake Hartbeespoort Dam South Africa J Ecology Sterner RW The role of grazers in phytoplankton succession In Sommer U ed Plankton ecology succesion in plankton communities Berlin Springer-Verlag Fulton RS Paerl HW Toxic and inhibitory effects of the blue-green alga Microcystis aeruginosa on herbivorous zooplankton J Plankton Res Paerl HW Fulton RS Moisander PH et al Harmful freshwater algal blooms with an emphasis on cyanobacteria The Scientific World Journal

吴根良等不同前作对设施草莓土壤环境动态变化和经济效益的影响 4 土传病害也因此日趋严重严重影响草莓的产量和品质轮作尤其是水旱轮作是克服连作障 5 6 233 棚揭开大棚膜其他大棚不揭膜都按常规进行水肥农药的管理 8 月初前作结束后用产品名碍的有效技术措施之一其中有关水稻草 7

吴根良等不同前作对设施草莓土壤环境动态变化和经济效益的影响 4 土传病害也因此日趋严重严重影响草莓的产量和品质轮作尤其是水旱轮作是克服连作障 5 6 233 棚揭开大棚膜其他大棚不揭膜都按常规进行水肥农药的管理 8 月初前作结束后用产品名碍的有效技术措施之一其中有关水稻草 7 24( 2) : 232 237 浙江农业学报 Acta Agriculturae Zhejiangensis 2012 http: / / www zjnyxb cn 2012 24( 2) : 吴根良忻雅童建新等不同前作对设施草莓土壤环境动态变化和经济效益的影响 J 浙江农业学报 232 237 不同前作对设施草莓土壤环境动态变化和经济效益的影响 1 吴根良忻 ( 1 1 * 雅童建新1