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http://dx.doi.org/10.11626/KJEB.2016.34.4.320

Analysis of Benthic Macroinvertebrate Community Structure and Stability in Major Inflow Streams of Lake Andong and Lake Imha  

You, Hyuk (Department of Biological Science, Andong National University)
Lee, Mi Jin (Department of Biological Science, Andong National University)
Seo, Eul Won (Department of Biological Science, Andong National University)
Lee, Jong Eun (Department of Biological Science, Andong National University)
Publication Information
Korean Journal of Environmental Biology / v.34, no.4, 2016 , pp. 320-328 More about this Journal
Abstract
This study was conducted to provide important basic information about effective management of the marine environment at major inflow streams in Lake Andong and Lake Imha. The investigation was conducted 8 times from May, 2015 (AD1, AD2, IH1, IH2) to September, 2016 (AD3, AD4, IH3, IH4), and 8 surveyed sites were selected at Lake Andong (4 sites) and Lake Imha (4 sites). The inquiry identified 114 species, $59,913.7inds.\;m^{-2}$ in Lake Andong and 112 species, $39,038.4inds.\;m^{-2}$ in Lake Imha. The results indicate that the number of species and individuals in Lake Andong is more than that in Lake Imha, because Lake Andong has a variety of riparian vegetation and a richness of organic materials. Community analysis at Lake Imha revealed a dominant index of 0.57 (${\pm}0.18$), a diversity index of 2.87 (${\pm}0.31$), an evenness index of 0.73 (${\pm}0.04$), and a richness index of 4.17 (${\pm}0.71$). The results of functional feeding group analysis showed that a high proportion of species and individuals are gathering collectors. The results of functional habitat group analysis showed that a high proportion of species and individuals are clingers. The result of a physico-chemical water assay and dissolved oxygen and electric conductivity tests revealed that these measures increased when the water temperature decreased. The result of Pearson's correlation analysis by biological factors and physico-chemical factors showed that species and electric conductivity are highly correlated with one another. Major inflow streams of Lake Andong and Lake Imha were exposed to various point pollution sources and non-point pollution sources. This implies a necessity for continuous monitoring of the aquatic ecosystems in order to effect systematic water quality management of Lake Andong and Lake Imha.
Keywords
benthic macroinvertebrates; community structure; community stability; Lake Andong; Lake Imha;
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