长江口盐沼湿地底栖微藻的分布特征及其对有机质产出的贡献

商栩; 管卫兵; 张经

长江口盐沼湿地底栖微藻的分布特征及其对有机质产出的贡献

1.
温州医学院水域科学与环境生态研究所, 浙江温州 325035;华东师范大学河口海岸学国家重点实验室, 上海 200062
2.
上海水产大学海洋学院, 上海200090
3.
华东师范大学河口海岸学国家重点实验室, 上海 200062

基金项目: 教育部“创新团队”计划项目(PCSIRT0427);国家自然科学基金项目(40906072);浙江省自然科学基金项目(Y5090195);温州医学院校科研资助项目(QTJ08003)

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出版历程
- 收稿日期: 2008-09-08
- 修回日期: 2009-07-20

Distribution characteristics and contribution to total primary production of microphotobenthos in the salt marshes of the Changjiang Estuary

1.
School of Environmental Science and Public Health, Wenzhou Medical College, Wenzhou China, 325035 China;State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
2.
College of Marine Science and Technology, Shanghai Fisheries University, Shanghai 200090, China
3.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

摘要

摘要: 2006年6月(夏季)和12月(冬季)分别对长江口九段沙湿地潮滩底栖微藻的分布状况进行了调查,估算了湿地内各主要初级生产者的生产力并进行了比较。结果显示分布于该盐沼湿地的底栖微藻在光照条件下主要聚集于沉积物表层,形成其生物量随深度增加而迅速减少的垂直分布模式,并随滩面植被盖度从大到小的顺序呈现为:光滩、藨草区、米草区≈芦苇区的水平分布特征。九段沙湿地中单位面积上底栖微藻的生物量远高于上覆水中浮游植物的生物量,其单位面积生产力也显著高于后者,表明底栖微藻在源自单胞藻的湿地有机产出中占有主导地位。九段沙湿地中底栖微藻总生物量远低于地表维管植物,其生物量仅占潮滩初级生产者总生物量的约0.41%,所产出的有机质却达到潮滩总初级生产力约16.53%,意味着这种高营养、易摄取的有机产出有能力成为维持该湿地生态系统的重要食物来源之一。
- 长江口 /
- 底栖微藻 /
- 盐沼湿地 /
- 初级生产力 /
- 九段沙
Abstract: The observation of vertical and horizontal distribution of microphytobenthos (MPB) living on tidal flats, and the estimate of the contribution of the dominant primary producers to total primary production have been carried out in the Jiuduansha salt marshes of the Changjiang Estuary in June (summer) and December (winter) of 2006.MPB concentrate on the surface of the sediments under illumination, and its biomass decrease rapidly with depth. Significant variations of chlorophyll a concentrations in the surface sediments are found between tidal flats covered by different vegetations, following the sequence of bare flat > Scirpus mariqueter region > Spartina alterniflora region ≈ Phragmetis australis region. The biomass and production of MPB are much higher than phytoplankton in the overlaying water column, indicating MPB dominate the algal production in these salt marshes. Although the biomass of MPB are much lower than vascular plants, and only account for 0.41% of total biomass of primary producers in Jiuduansha, MPB contribute 16.53% of total primary production to the ecosystem here.Considerable production of MPB makes this nutritious and digestible producer may play an important role in maintaining this salt marsh ecosystem.
- Changjiang Estuary /
- microphytobenthos /
- salt marsh /
- primary production /
- Jiuduansha

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参考文献(38)

陆健健.中国湿地[M].上海:华东师范大学出版社.1990:58-60.

TEAL J M,HOWES B L.Salt marsh values:retrospection from the end of the century[M]//Weinstein M P,Kreeger D A.Concepts and Controversies in Tidal Marsh Ecology.New York:Kluwer Academic Publishers,2002:9-19.

TEAL J M.Energy flow in the salt marsh ecosystem of Georgia[J].Ecology.1962,43:614-624.

ODUM E P.A research challenge:evaluating the productivity of coastal and estuarine water[C]//Proceedings of the 2nd Sea Grant con-gress.Kingston:University of Rhode Island,1968:63-64.

HOPKINSON C S.Shallow water benthic and pelagic metabolism:evidence for heterotrophy in the nearshore Georqia Bight[J].Marine Biology,1985,87:19-32.

ODUM E P,DE LA CRUZ A.Particulate organic detritus in a Georgia salt marsh-estuarine ecosystem[M]//LAUFF G H.Estuaries:American Association for the Advancement of Science Publication,1967:383-388.

HAINES E B.Relation between the stable isotope composition of fiddler crabs,plants and soils in a saIt marsh[J].Limnology and Ocea-nography,1976,21:609-616.

HAINES E B,MONTAGUE C L Food sources of estuarine invertebrates analyzed using13C/12C ratios[J].Ecology,1979,60:48-56.

SULLIVAN M J,MONCREIFF C A.Edaphic algae are an important component of salt marsh food-webs:evidence from multiple stable isotope analyses[J].Marine Ecology Progress Series.1990,62:149-159.

陆健健,孙宪坤.何文珊.上海地区湿地的研究[M].郎惠卿,林鹏,陆健健.中国湿地研究和保护.上海:华东师范大学出版杜,1998:97-309.

宋国元,袁俊峰,左本荣.九段沙植被分布及其环境因子研究[J].上海师范大学学报(自然科学版),2001,30(1):69-73.

孙书存.蔡永立,刘红.长江口盐沼海三棱蔗草在高程梯度上的生物量分配[J].植物学报,2001,43(2):178-185.

陈家宽.上海九段沙湿地自然保护区科学考察集[M].北京:科学出版社,2003.

罗秉征,韦晟,窦硕增.长江口鱼类食物网与营养结构的研究[J].海洋科学集刊.1997,38:143-153.

宁修仁,刘子琳,蔡昱明.象山港潮滩底栖微型藻类现存量和初级生产力[J].海洋学报,1999,21(3):98-105.

DE JONGE V N.Fluctuations in the organic carbon to chlorophyll a ratios for estuarine benthic diatom populations[J].Marine Ecolo-gy Progress Series.1980,2:345-353.

DE JONG D J,NIENHUIS P H,KATER B J.Microphytobenthos in the Oosterschelde estuary(the Netherlands),1981-1990;con-sequences of a changed tidal regime[J].Hydrobiologia,1994,282/283:183-195.

刘子琳,宁修仁,蔡昱明.杭州湾一舟山渔场秋季浮游植物现存量和初级生产力[J].海洋学报,2001,23(2):93-99.

CLOERN J E,GRENZ C,VIDERGAR-LUCAS L An empirical model of the phytoplankton chlorophyll:carbon ration-the conver-sion factor between productivity and growth rate[J].Limnology and Oceanography,1995,40:1313-1321.

JASSBY A D,CLOERN J E,COLE B E.Annual primary production:patterns and mechanisms of change in a nutrient-rich tidal eco-system[J].Limnology and Oceanography.2002,47:698-712.

LIAO C Z,LUO Y Q,JIANG L F,et al.Invasion of Spartina alterniflora enhanced ecosystem carbon and nitrogen stocks in the Yangtze estuary,China[J].Ecosystems,2007.10:1351-1361.

HUANG H,ZHANG L Q.A study of the population dynamics of Spartina aherniflora at Jiuduansha shoals,Shanghai,China[J].Ecological Engineering,2007,29:164-172.

WILTSHIRE K H.Algae and associated pigments of intertidal sediments,new observations and methods[J].Limnologica,2000,30:205-214.

JANSSEN M,HUST M,RHIEL E,et al.Vertical migration behaviour of diatom assemblages of Wadden Sea sediments(Dangast,Germany):a study using cryo-scanning electron microscopy[J].International Microbiology,1999,2:103-110.

WHITNEY D E,DARLEY W M.Effect of light intensity upon salt marsh benthic microaigal photosynthesis[J].Marine Biology,1983.75:249-252.

BLANCHARD G F,MONTAGNA P A.Photosynthetic response of natural assemblages of marine benthic microalgae to short-and long-term variations of incident irradiance in Baffin bay,Texas[J].Journal of Phycology,1992,28:7-14.

KROMKAMP J,PEENE J,VAN RUSWIJK P,et al.Nutrients,light and primary production by phytoplankton and microphytob-enth05 in the eutrophic,turbid Westerschelde estuary(The Netherlands)[J].Hydrobiologia,1995,311:9-19.

NOZAIS C,PERISSINOTTO R,MUNDREE S Annual cycle of microalgal biomass in a South African temporarily-open estuary:nu-trient versus light limitation[J].Marine Ecology Progress Series,2001,223:39-48.

ZEDLER J B Algal mat productivity;comparisons in a salt marsh[J].Estuaries,1980,3;122-131.

POMEROY L R.DARLEY E.DUNN E,et al.Primary production[M]//POMEROY L R,WIEGERT R G.The Ecology of a Salt Marsh.New York:Springer,1981,39-67.

HALL S L,FISHER F M Jr.Annual productivity and extraeellular release of dissolved organic compounds by the epibenthic algae com-munity of a brackish marsh[J].Journal of Phycology,1985.21:277-281.

SULLIVAN M J,MONCREIFF C A.Primary production of edaphic algal communities in a Mississippi salt marsh[J].Journal of Phy-cology.1988.24:49-58.

PINCKNEY J,ZINGMARK R G.Biomass and production of benthic microalgal communities in estuarine habitats[J].Estuaries,1993,164:887-897.

PETERSON B J.HOWARTH R W.Sulfur,carbon and nitrogen isotopes used to trace organic matter flow in the salt-marsh estuaries of Sapelo Island,Georgia[J].Limnology and Oceanography.1987,32:1195-1213.

RIERA P,STAL L J,NIEuwENHulzE J,et al.Determination of food sources for benthic invertebrates in a salt marsh(Aiguillon Bay,France)by carbon and nitrogen stable isotopes:importance of locally produced sources[J].Marine Ecology Progress Series,1999,187:301-307.

QUAN W M,FU C Z,JIN B S,et al.Tidal marshes as energy sources for commercially important nektonic organisms..stable isotope analysis[J].Marine Ecology Progress Series,2007,352:89-99.

SHANG X.ZHANG G S,ZHANG J.Relative importance of vascular plants and algal production in the food web of a Spartina-inva-ded salt marsh in the Yangtze River estuary[J].Marine Ecology Progress Series,2008,367:93-107.

MILLER D C,GEIDER R J,MACINTYRE H L Microphytobenthos:The ecological role of the"secret garden"of unvegetated.shai-low-water marine habitats:Ⅱ.Role in sediment stability and shallow-water food webs[J].Estuaries,1996,191 202-212.

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