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http://dx.doi.org/10.5657/KFAS.2013.0886

Substrate Characteristics of Sea Cucumber Stichopus japonicus Habitats in the West Coast of Korea  

Park, Kwang-Jae (Tidal-Flat Research Center, National Fisheries Research & Development Institute)
Ryu, Sang-Ock (Institute of Coastal Management & Technology)
Baek, Young-Sook (Institute of Coastal Management & Technology)
Kim, Yeun-Seol (Internatioal Tidal Flat Research Institute, Fisheries Research and Department Institute)
Kang, Hee-Woong (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Han, Hyon-Sob (Aquafeed Research Center, National Fisheries Research & Development Institute)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.46, no.6, 2013 , pp. 886-891 More about this Journal
Abstract
We analyzed surface sediments to explain the substrate characteristics of sea cucumber Stichopus japonicus habitat. The analyses included grain-size determination, water content (WC), loss on ignition (IL), chemical oxygen demand (COD), and acid volatile sulfide (AVS) content. We obtained data on sea cucumber density, weight, and length at each station in a marine farming area in the middle of Korea's Taean coast on the West (Yellow) Sea in May, 2012. The apparent density of S. japonicus was high in coarse and bimodal sediments, whereas it was low in fine and unimodal sediments. The mass of S. japonicus was greater in fine than in coarse sediments, showing a different trend from sea cucumber density. The values for WC, IL, COD, and AVS in surface sediments were higher in areas with high densities of S. japonicus than in areas with low sea cucumber densities. In particular, the concentration of AVS was much higher than the value proposed in Japanese criteria for areas with high S. japonicus density.
Keywords
Stichopus japonicus; Grain sizes; Geochemical parameters; Substrate characteristics; Taean coastal zone;
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