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Comparative Study on Macroinvertebrate Communities in Confluence Areas from Typical Tributaries to Mainstream of the Yellow River
XIE Yuan, JIANG Xiaohui, WANG Ting, XU Xuming, NI Jinren
Acta Scientiarum Naturalium Universitatis Pekinensis    2018, 54 (5): 1067-1076.   DOI: 10.13209/j.0479-8023.2018.014
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The benthic macroinvertebrate communities in the confluence areas from tributaries to mainstream could play an important role in understanding interactions between materials flows from rivers and their ecological consequences. Based on monitoring on conducted in the four typical tributaries (Huangshui River, Fenhe River, Weihe River and Luohe River) to the Yellow River during spring and autumn in 2015, the characteristics of macroinvertebrate communities are systematically compared. As results, sorted by the number of macroinvertebrate species in both seasons for all confluences, Luohe River (28)>Huangshui River (26)>Fenhe River (23)>Weihe River (17). Moreover, the collecter-gather becomes dominant functional feeding group in both seasons for all confluences except scraper dominated in autumn in Luohe River. Detrended Correspondence Analysis (DCA) reveals that substrate is of significance in structuring benthic macroinvertebrate communities. The survival of aquatic plants seems more favorable to survival of benthic macroinvertebrate. Furthermore, Redundancy Analysis (RDA) suggests that benthic macroinvertebrate communities are mainly influenced by pH and conductivity. The present study provides new information on species composition, density, biomass, functional feeding group of benthic macroinvertebrate communities, and the relationship between macroinvertebrate communities and habitat factors, which would be of particular use to deeper understand the aquatic organism in the Yellow River receiving tributaries, which are interfered to various degree by human activities.

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Assessing Water Quality of the Yellow River with Benthic Macro-invertebrate Indices
HUANG Xulei;LI Tianhong;JIANG Xiaohui
Acta Scientiarum Naturalium Universitatis Pekinensis    DOI: 10.13209/j.0479-8023.2015.070