Comparison of taxon-based and trophi-based response patterns of rotifer community to water quality: applicability of the rotifer functional group as an indicator of water quality
2017
Oh, H.J., Kyung Hee University, Yongin, Republic of Korea | Jeong, H.G., National Institute of Environmental Research, Yangpyung, Republic of Korea | Nam, G.S., Rural Research Institute, Korea Rural Community Corporation, Ansan, Republic of Korea | Yusuke Oda, Kyung Hee University, Yongin, Republic of Korea | Wei Dai, Kyung Hee University, Yongin, Republic of Korea | Lee, E.H., Rural Research Institute, Korea Rural Community Corporation, Ansan, Republic of Korea | Kong, D.S., Kyonggi University, Suwon, Republic of Korea | Hwang, S.J., Konkuk University, Seoul, Republic of Korea | Chang, K.H., Kyung Hee University, Yongin, Republic of Korea
Rotifer community is often used as a taxon-based bioindicator for water quality. However, studies of the planktonic community from the viewpoint of functional groups in freshwater ecosystems have been limited, particularly for rotifers. Because rotifers have various trophi types determining their feeding strategies, thereby representing an ecological niche, their functional feeding groups can act as biological and ecological indicators in lakes and reservoirs where planktonic communities are dominant. We analyzed the patterns of spatial distribution of the rotifer community in various reservoirs and then its relationship with water quality through redundancy and regression analyses. Compared with taxon-based composition, the response of trophi-based composition appears simplistic and showed clearer tendency in relation with water-quality variables. Each trophi responded differently by the degree of eutrophication indicating that each trophi group is possibly affected by environments such as the combinations of water-quality variables in different ways.
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