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http://dx.doi.org/10.5656/KSAE.2020.09.0.055

Correlation Analysis between Sediment Particle Size and Number of Macromia daimoji (Endangered Species II) Nymphs in Naeseong Stream, Korea  

Park, Jinyoung (Team of Protected Area Research, National Institute of Ecology)
Kwon, Hyeok Yeong (Department of Biological Science, Andong National University)
Jang, Myeong Seong (Department of Biological Science, Andong National University)
Cha, Jin Yeol (Team of Protected Area Research, National Institute of Ecology)
Lee, Jong Eun (Department of Biological Science, Andong National University)
Publication Information
Korean journal of applied entomology / v.59, no.4, 2020 , pp. 325-331 More about this Journal
Abstract
Macromia daimoji nymphs (Endangered Species II) are known to inhabit the Naeseong Stream in Korea. In March 2019, we performed a correlation analysis between sediment particle size and the M. daimoji population using data collected from a 0.2-㎡ area at 37 sites in Naeseong riverbed. Particle size analysis showed different ratios of sediments in the riverbed: Coarse Sand (500-1,000 ㎛) 52.5%; Very Coarse Sand (1,000-2,000 ㎛) 25.6%; Medium Sand (250-500 ㎛) 17.2%; Fine Sand (125-250 ㎛) 3.1%; Very Fine Sand (63-125 ㎛) 1.0%; and Silt (less than 63 ㎛) 0.7%. The number of M. daimoji nymphs showed a positive correlation with Very Fine Sand and Fine Sand and a negative correlation with Coarse Sand, indicating that M. daimoji nymphs inhabit fine sand. These results can be used to monitor changes in the riverbed environment of Naeseong Stream to ensure the conservation of M. daimoji habitat.
Keywords
Macromia daimoji nymphs; Sediment particle size; Endangered species II; Naeseong stream;
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