| 洱海湖滨带大型底栖动物的群落结构 |
| Macrozoobenthos Community Structure in Aquatic-terrestrial Ecotones of Lake Erhai |
| 投稿时间：2010-09-03 修订日期：2010-11-03 |
| DOI： |
| 中文关键词:洱海 大型底栖动物 群落结构 |
| 英文关键词:Erhai Lake macrobenthos community structure |
| 基金项目:国家科技重大专项水体污染的控制与治理(2008ZX07102-005，2008ZX07105-004)；淡水生态与生物技术国家重点实验室(2009FB16) |
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| 中文摘要: |
| 洱海是云贵高原第二大湖泊,拥有生物较为丰富的湖滨带和特有种,如螺蛳(Margarya melanioides)、绘环棱螺(Bellamya limnophila)。2009年5月和12月在洱海湖滨带开展调查,共采集到底栖动物30个分类单元;其中,寡毛类、摇蚊科幼虫和软体动物等主要类群为11种、7种和9种,分别占物种总数的36.7%、23.3%和30.0%,其它动物3种。在密度方面,群落结构以寡毛类为主,平均密度达488个/m2(占总丰度的89.7%),密度峰值出现在弥苴河口(7424个/m2);而在生物量方面则以软体动物占优势,平均生物量为67.26g/m2(占总丰度的91.4%)。按密度的平均相对丰度计算,霍甫水丝蚓(Limnodrilus hoffmeisteri)为第一优势种(平均相对丰度24.4%),其次为异腹腮摇蚊(Einfeldia sp.)(13.2%)、苏氏尾鳃蚓(Branchiura sowerbyi)(11.6%)和正颤蚓(Tubifex tubifex)(11.5%)。按生物量计算,圆田螺(Cipangopaludina sp.)为第一优势种(占总生物量的79.3%),其次为河蚬(Corbicula fluminea)(10.6%)和环棱螺(Bellamya sp.)(6.2%)。洱海的Shannon-Wiener指数平均为1.08,西岸比东岸的生物多样性指数要高。 |
| 英文摘要: |
| Lake Erhai，a deep lake with rich aquatic-terrestrial ecotones，is the second largest plateau 1ake located in Dali City of Yunan Province. It possesses endemic zoobenthos，such as Margarya melanioides and Bellamya Limnophila; however, its macrobenthos community has been poorly investigated. Herein，surveys of macrobenthos were carried out in May and December 2009 in the whole aquatic-terrestrial ecotones of the lake. A total of 30 taxa were collected，among which，oligochaete，chironomid and mollusc were main groups，and 11 species(36.7% of the total number of species )，7 (23 .3%)and 9(30.0%)，respectively，were recorded. Oligochaetes dominated in the total density，and the average value was 488 ind. /m2(89.7 % of the total abundance )，with the highest one occurred in the mouth of Miju river (7 424 ind/m2).Mollusc，however，covered 91.4% of the total biomass (67.26 g/m2).According to the density of the average relative abundance，the first dominant species was Limnodrilus hoffmeisteri (average relative abundance is 24.4%)，followed by Einfeldia sp.(13.2%)，Branchiura sowerbyi(11.6 %)and Tubifex tubifex(11 .5%).As to the biomass，the first dominant species was Cipangopaludinasp. (79.3% of total biomass)，followed by Corbicula fluminea (10.6%) and Bellamya sp. (6.2%).The mean Shannon-Wiener index was 1 .08，and the value in the west region was higher than that of east one. |
| 王丑明,张君倩,蒋小明,熊晶,谢志才.2011.洱海湖滨带大型底栖动物的群落结构[J].水生态学杂志,32(2):25-30. |
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