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| Titel |
Research on bait resources in the Main Stream of Wulie River |
| VerfasserIn |
Lin Wang, Denghua Yan, Hong Gan, Xiaocheng Fu, Xiumin Sun |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250033675
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| Zusammenfassung |
| Abstract: Wulie river is the first branch of Luanhe river, and most of the water use for industrial, agricultural and living of the Chengde city is coming from it. The investigation results of 8 monitoring sections in July, 2009 show that there are 44 species of phytoplankton belonging to 7 phylum in the Main stream of Wulie river. The Bacillariophyta has the most species comparing with other species, and is the dominant species. The phytoplankton species is more in the lower reach than that in the upper reach which is relevant to the intensity of the human disturbance. There are 28 kinds of zooplanktons in the river, in which the protozoa and rotatoria are the dominant species. The zooplankton species in the lower reach show the lake characteristics which is relevant to the 12 rubber dams. There are 18 macrozoobenthos in the river, and Hydropyche, Ephemera, Baetidae and Caenis are the dominant genus. The macrozoobenthos community is simple and most of them belong to the species fond of rapids and oxygen. Investigation of the bait resources show that the water quality is good in this river, but the lower reach has appeared the lake characteristics because of the water intercepting and impounding by the rubber dams. The establishment of water conservancy engineering has changed the hydrology and river morphology, which as a result altered the bait resources of the fishes living in the rivers. |
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