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题名: Community structure and spatiotemporal patterns of macrozoobenthos in Lake Chaohu (China)
作者: Cai, Yongjiu1; Gong, Zhijun1; Xie, Ping2
通讯作者: Gong, ZJ (reprint author), Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, 73 E Beijing Rd, Nanjing 210008, Peoples R China.
关键词: Lake Chaohu ; Shallow freshwater lakes ; Eutrophication ; Cyanobacterial blooms ; Spatial pattern
刊名: AQUATIC BIOLOGY
发表日期: 2012
DOI: 10.3354/ab00455
卷: 17, 期:1, 页:35-46
收录类别: SCI
文章类型: Article
部门归属: [Cai, Yongjiu; Gong, Zhijun] Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China; [Xie, Ping] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Sciences Foundation of China [31070418, 31270505]; Key Program of Nanjing Institute of Geography and Limnology, CAS [NIGLAS2012135002]
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Lake Chaohu, the fifth largest freshwater lake in China, has been subjected to severe eutrophication and cyanobacterial blooms over the past few decades. However, little is known about the macrozoobenthic assemblages in this lake. To characterize the community structure and spatiotemporal patterns of macrozoobenthos in Lake Chaohu and to elucidate the environmental factors that regulate the benthic community, a bimonthly investigation was conducted at 9 stations from September 2002 to July 2003. Principal component analysis suggested that there was a decrease in trophic status from west to east in this lake. A total of 19 taxa were recorded, and the most abundant organisms were members of Oligochaeta and Chironomidae. Two-way ANOSIM indicated significant differences in community structure among stations (R = 0.417, p < 0.001) but not among months (R = 0.058, p = 0.128). Mantel tests showed that spatial changes in macrozoobenthic assemblages were similar across most sampling occasions. A BIO-ENV analysis showed that the concentrations of total nitrogen, total phosphorus, ammonium and dissolved oxygen in the benthic layer were strongly correlated to the community structure of macrozoobenthos in Lake Chaohu. Compared with a study conducted in 1980 to 1981, benthic assemblages shifted from dominance by Corbicula fluminea and gastropods to dominance by oligochaetes and chi-ronomids in the present study. Our results have implications for benthic biodiversity conservation in shallow lakes along the Yangtze River undergoing eutrophication.
英文摘要: Lake Chaohu, the fifth largest freshwater lake in China, has been subjected to severe eutrophication and cyanobacterial blooms over the past few decades. However, little is known about the macrozoobenthic assemblages in this lake. To characterize the community structure and spatiotemporal patterns of macrozoobenthos in Lake Chaohu and to elucidate the environmental factors that regulate the benthic community, a bimonthly investigation was conducted at 9 stations from September 2002 to July 2003. Principal component analysis suggested that there was a decrease in trophic status from west to east in this lake. A total of 19 taxa were recorded, and the most abundant organisms were members of Oligochaeta and Chironomidae. Two-way ANOSIM indicated significant differences in community structure among stations (R = 0.417, p < 0.001) but not among months (R = 0.058, p = 0.128). Mantel tests showed that spatial changes in macrozoobenthic assemblages were similar across most sampling occasions. A BIO-ENV analysis showed that the concentrations of total nitrogen, total phosphorus, ammonium and dissolved oxygen in the benthic layer were strongly correlated to the community structure of macrozoobenthos in Lake Chaohu. Compared with a study conducted in 1980 to 1981, benthic assemblages shifted from dominance by Corbicula fluminea and gastropods to dominance by oligochaetes and chi-ronomids in the present study. Our results have implications for benthic biodiversity conservation in shallow lakes along the Yangtze River undergoing eutrophication.
关键词[WOS]: HARMFUL ALGAL BLOOMS ; FRESH-WATER ; LONG-TERM ; DREISSENA-POLYMORPHA ; CORBICULA-FLUMINEA ; SUBTROPICAL CHINA ; EUTROPHIC LAKE ; BIODIVERSITY ; SHALLOW ; HYPOXIA
语种: 英语
WOS记录号: WOS:000310151500005
ISSN号: 1864-7790
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/17188
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China

Recommended Citation:
Cai, Yongjiu; Gong, Zhijun; Xie, Ping.Community structure and spatiotemporal patterns of macrozoobenthos in Lake Chaohu (China),AQUATIC BIOLOGY,2012,17(1):35-46
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