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学科主题: Zoology
题名: Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain
作者: Yan, Yunzhi1; He, Shan1; Chu, Ling1; Xiang, Xiuying1; Jia, Yanju2; Tao, Juan3; Chen, Yifeng3
通讯作者: Yan, YZ, Anhui Normal Univ, Coll Life Sci, Prov Key Lab Biot Environm & Ecol Safety Anhui, Wuhu 241000, Anhui, Peoples R China
关键词: Assemblage structure ; Low-head dam ; Stream fish ; Spatial-temporal pattern
刊名: CURRENT ZOOLOGY
发表日期: 2010
卷: 56, 期:6, 页:670-677
收录类别: SCI
文章类型: Article
部门归属: [Yan, Yunzhi; He, Shan; Chu, Ling; Xiang, Xiuying] Anhui Normal Univ, Coll Life Sci, Prov Key Lab Biot Environm & Ecol Safety Anhui, Wuhu 241000, Anhui, Peoples R China; [Jia, Yanju] Hebei Univ Econ & Business, Coll Biol Sci & Engn, Shijiazhuang 050061, Peoples R China; [Tao, Juan; Chen, Yifeng] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Basic Research Program of China [2009CB119200]; Anhui Provincial Natural Science Foundation [090413080]; Natural Science Foundation of Anhui Education Bureau [KJ2008B211, KJ2009A110]
类目[WOS]: Zoology
研究领域[WOS]: Zoology
摘要: Spatial and temporal variation of fish assemblages were investigated seasonally from May 2007 to February 2008 across 11 study sites in a subtropical small stream, the Puxi Stream, of the Huangshan Mountain. Along the longitudinal gradient from headwater to downstream, fish species richness and abundance increased gradually, but then decreased significantly at the lower reaches. The highest species richness and abundance were observed in August and the lowest in February. Based on analysis of similarities (ANOSIM), fish assemblages were significantly different in spatial variation but not in temporal variation. Although differences were observed both among sites and among stream orders, the lower R value in order-variation suggested stream order was not the optimal factor explaining the spatial variation of fish assemblages. In addition, dam construction did not significantly alter fish assemblages in the sites adjacent to and immediately downstream to dams. Using cluster analysis and non-metric Multi Dimensional Scaling analysis (NMS), assemblages were separated into three groups at a Bray-Curtis similarity value of 42%: the upper, middle and lower groups. Following analysis of similarity percentages of species contributions (SIM-PER), shifts in occurrence or abundance of S. curriculus, Z. platypus, R. bitterling and A. fasciatus contributed most to the differences amongst the three groups. Standard Deviation Redundancy Analysis (RDA) suggested that habitat structure (such as elevation, substrate, and flow velocity) contributed to the spatial and temporal pattern of fish assemblages in the Puxi Stream. In conclusion, the fish assemblages in Puxi Stream presented significant spatial but not temporal variation. Human disturbance has perhaps induced the decrease in species diversity in the lower reaches. However, no significant change was observed for fish assemblages in sites far from and immediately downstream from low-head dams [Current Zoology 56 (6): 670-677, 2010].
英文摘要: Spatial and temporal variation of fish assemblages were investigated seasonally from May 2007 to February 2008 across 11 study sites in a subtropical small stream, the Puxi Stream, of the Huangshan Mountain. Along the longitudinal gradient from headwater to downstream, fish species richness and abundance increased gradually, but then decreased significantly at the lower reaches. The highest species richness and abundance were observed in August and the lowest in February. Based on analysis of similarities (ANOSIM), fish assemblages were significantly different in spatial variation but not in temporal variation. Although differences were observed both among sites and among stream orders, the lower R value in order-variation suggested stream order was not the optimal factor explaining the spatial variation of fish assemblages. In addition, dam construction did not significantly alter fish assemblages in the sites adjacent to and immediately downstream to dams. Using cluster analysis and non-metric Multi Dimensional Scaling analysis (NMS), assemblages were separated into three groups at a Bray-Curtis similarity value of 42%: the upper, middle and lower groups. Following analysis of similarity percentages of species contributions (SIM-PER), shifts in occurrence or abundance of S. curriculus, Z. platypus, R. bitterling and A. fasciatus contributed most to the differences amongst the three groups. Standard Deviation Redundancy Analysis (RDA) suggested that habitat structure (such as elevation, substrate, and flow velocity) contributed to the spatial and temporal pattern of fish assemblages in the Puxi Stream. In conclusion, the fish assemblages in Puxi Stream presented significant spatial but not temporal variation. Human disturbance has perhaps induced the decrease in species diversity in the lower reaches. However, no significant change was observed for fish assemblages in sites far from and immediately downstream from low-head dams [Current Zoology 56 (6): 670-677, 2010].
关键词[WOS]: RIVER-BASIN ; HABITAT ; COMMUNITIES ; STABILITY ; GRADIENTS ; PATTERNS ; BRAZIL ; FAUNA ; INDEX ; DAMS
语种: 英语
WOS记录号: WOS:000284218300004
ISSN号: 1674-5507
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13453
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Anhui Normal Univ, Coll Life Sci, Prov Key Lab Biot Environm & Ecol Safety Anhui, Wuhu 241000, Anhui, Peoples R China
2.Hebei Univ Econ & Business, Coll Biol Sci & Engn, Shijiazhuang 050061, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China

Recommended Citation:
Yan, Yunzhi; He, Shan; Chu, Ling; Xiang, Xiuying; Jia, Yanju; Tao, Juan; Chen, Yifeng.Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain,CURRENT ZOOLOGY,2010,56(6):670-677
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