Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain
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 abun...
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| Format: | Article |
| Language: | English |
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Oxford University Press
2010-12-01
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| Series: | Current Zoology |
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| Online Access: | http://www.currentzoology.org/paperdetail.asp?id=11693 |
| _version_ | 1818193197443055616 |
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| author | Yunzhi YAN,Shan HE, Ling CHU, Xiuying XIANG, Yanju JIA, Juan TAO, Yifeng CHEN |
| author_facet | Yunzhi YAN,Shan HE, Ling CHU, Xiuying XIANG, Yanju JIA, Juan TAO, Yifeng CHEN |
| author_sort | Yunzhi YAN,Shan HE, Ling CHU, Xiuying XIANG, Yanju JIA, Juan TAO, Yifeng CHEN |
| collection | DOAJ |
| description | 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 (SIMPER), 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]. |
| first_indexed | 2024-12-12T00:42:34Z |
| format | Article |
| id | doaj.art-7ca6cf49e486402a8db9f0e071a630d3 |
| institution | Directory Open Access Journal |
| issn | 1674-5507 |
| language | English |
| last_indexed | 2024-12-12T00:42:34Z |
| publishDate | 2010-12-01 |
| publisher | Oxford University Press |
| record_format | Article |
| series | Current Zoology |
| spelling | doaj.art-7ca6cf49e486402a8db9f0e071a630d32022-12-22T00:44:12ZengOxford University PressCurrent Zoology1674-55072010-12-01566670677Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan MountainYunzhi YAN,Shan HE, Ling CHU, Xiuying XIANG, Yanju JIA, Juan TAO, Yifeng CHENSpatial 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 (SIMPER), 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].http://www.currentzoology.org/paperdetail.asp?id=11693Assemblage structureLow-head damStream fishSpatial-temporal pattern |
| spellingShingle | Yunzhi YAN,Shan HE, Ling CHU, Xiuying XIANG, Yanju JIA, Juan TAO, Yifeng CHEN Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain Current Zoology Assemblage structure Low-head dam Stream fish Spatial-temporal pattern |
| title | Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain |
| title_full | Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain |
| title_fullStr | Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain |
| title_full_unstemmed | Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain |
| title_short | Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain |
| title_sort | spatial and temporal variation of fish assemblages in a subtropical small stream of the huangshan mountain |
| topic | Assemblage structure Low-head dam Stream fish Spatial-temporal pattern |
| url | http://www.currentzoology.org/paperdetail.asp?id=11693 |
| work_keys_str_mv | AT yunzhiyanshanhelingchuxiuyingxiangyanjujiajuantaoyifengchen spatialandtemporalvariationoffishassemblagesinasubtropicalsmallstreamofthehuangshanmountain |