| 从时空异质性看东湖富营养化中原生动物的演替 |
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| 引用本文： | 吴生桂,沈韫芬. 从时空异质性看东湖富营养化中原生动物的演替[J]. 生态学报, 2001, 21(3): 446-451 |
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| 作者姓名： | 吴生桂 沈韫芬 |
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| 作者单位： | 中国科学院水生生物研究所, |
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| 基金项目： | 国家自然科学然金资助项目(项目编号39470144) |
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| 摘 要： | 1993-08～1994-08，东湖原生动物年均丰度为59，391ind./L,年均生物量为1.40mg/L。从V站到0站，随着营养水平(TSI)增加，数量(A)和生物量(B)显著增加LnA=-58.323+16.503LnTSI(n=5,r=0.983,p=0.003);LnB=-16.840+0.256TSI(n=5,r=0.996,p<0.001),两者均表现出明显的空间异质性。同时，丰度的周年动态模式也发生了明显演替，原来的春季和秋季高峰演变为冬季高峰，营养水平越高，冬季高峰越明显，随营养水平增加形成的原生动物群落结构-种类组成和现存量-的空间格局与年代变化趋势一致。
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| 关 键 词： | 东湖 原生动物 空间异质性 演替 富营养化 |
| 文章编号： | 1000-0933(2001)03-0446-06 |
| 收稿时间： | 1999-03-20 |
| 修稿时间： | 1999-10-09 |
On the protozoan succession from the viewpoint of temporal and spatial heterogeneity in eutrophic Donghu Lake |
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| WU Shenggui and SHEN Yunfen. On the protozoan succession from the viewpoint of temporal and spatial heterogeneity in eutrophic Donghu Lake[J]. Acta Ecologica Sinica, 2001, 21(3): 446-451 |
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| Authors: | WU Shenggui and SHEN Yunfen |
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| Affiliation: | Institute of Hydrobiology; The Chinese Academy of Sciences; Wuhan; China |
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| Abstract: | The spatial heterogeneity of the standing crop of protozoa in Lake Donghu was observed during 1993 08|1994 08.The annual mean abundance of protozoa was 59 391 ind./L,and the biomass was 1.40 mg/L.With the increase of the trophic levels( TSI ),there was an obvious increase both in abundance( A ) and biomass( B )of protozoa.The succession of the annual dynamic model of protozoan abundance was found,the higher the trophic level,the higher peak in winter.The horizontal spatial pattern of protozoan community structure had a same trend with long|term changes caused by trophic levels in Donghu Lake. |
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| Keywords: | Donghu Lake protozoa temporal and spatial heterogeneity succession |
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