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A long‐term change of benthic macroinvertebrate communities in the Cheonggye stream, a restored urban stream in Seoul, Korea
Author(s) -
Choe Lak Jung,
Kim Dong Gun,
Baek Min Jeong,
Kang Hyo Jeong,
Lee Song Ji,
Lee Cha Young,
Cho Seo Young,
Park Hyung Joon,
Bae Yeon Jae
Publication year - 2011
Publication title -
entomological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 20
eISSN - 1748-5967
pISSN - 1738-2297
DOI - 10.1111/j.1748-5967.2011.00391.x
Subject(s) - benthic zone , species richness , dominance (genetics) , invertebrate , stream restoration , ecology , biology , habitat , urban stream , abundance (ecology) , environmental science , biodiversity , water quality , biochemistry , gene
Stream restoration affects stream biodiversity by improving water quality and habitat environments. Benthic macroinvertebrates are used as indicators of changes in stream environment, and, therefore, the effects of restoration can be evaluated by a long‐term monitoring of benthic macroinvertebrates. Cheonggye stream is an urban stream in Seoul, Korea, and a restoration project was conducted from July 2003 to September 2005. The purpose of this study was to investigate the long‐term changes in the benthic macroinvertebrate communities in Cheonggye stream after the restoration project in 2005. A 6‐year field study was seasonally conducted at five study sites in Cheonggye stream from November 2005 to October 2011. Benthic macroinvertebrates were sampled quantitatively using a Surber sampler (50 × 50 cm; mesh 0.25 mm, two replications per site). As a result, species richness of benthic macroinvertebrates rapidly increased after the restoration project and peaked (35 species per sample) in 2006 but gradually dropped to approximately 20 species up to the recent year. As a consequence, community indices changed gradually according to species richness and abundance: Dominance indices peaked in 2010 and species diversity indices ( H' ) peaked in 2007. According to a functional feeding group analysis, the composition of collector–filterers increased at first, but the decreased gradually to the recent year. In contrast, collector–gatherers showed an opposite tendency. The composition of clingers increased during the initial 4 years (2005–2008), whereas burrowers rapidly increased after 2008.