沉水植被的重建与消失对原生动物群落结构和生物多样性的影响  

The effects of restoration and disappearance of submerged macrophytes upon the structure and biodiversity of protozoan community

作　　者：宋碧玉[1] 曹明[2] 谢平[2] 

机构地区：[1]武汉水利电力大学,武汉430072 [2]中国科学院水生生物研究所,武汉430072

出　　处：《生态学报》2000年第2期270-276,共7页Acta Ecologica Sinica

基　　金：中国科学院东湖湖泊生态系统试验站开放课题

摘　　要：利用建在武汉东湖的中型围隔来研究沉水植被的重建与消失对原生动物群落的影响。结果表明 :沉水植被重建后 ,一些原已消失的种类重又出现 ,原生动物种类增加 ,密度降低 ,多样性指数增高 ,优势种类由固着种类取代浮游种类。沉水植被的消失引起原生动物优势种类的明显变化 ,周丛种类大量丧失 。In order to clarify the effects of restoration and disappearance of submerged macrophytes upon structure and biodiversity of protozoan community,the mesocosm experiments were conducted in Lake Donghu,Wuhan.When the submerged macrophytes were restored in the enclosures,some species of protozoans which were recorded in the 60's but disappeared from the lake waters afterwards were to be reappeared.There were richer species,lower densities and higher biodiversity indeces in the two macrophytic enclosures.The sessile species dominated the protozoan community in the enclosures,while the planktonic species dominated in the lake waters.The removal of the restored macrophytes from enclosure.B resulted in drastic changes of the protozoan community,i.e.,some periphytic species disappeared,but the total densities increased.

关 键 词：原生动物 群落结构 多样性 沉水植被 

分 类 号：Q145.1[生物学—生态学]