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http://dx.doi.org/10.11626/KJEB.2021.39.1.019

Distribution of benthic organisms and growth and obesity of mussels (Mytilus coruscus) by depth in Geomundo, south coast of Korea  

Bai, Jong Il (Underwater Ecology Institute)
Hwang, Sung Il (Underwater Ecology Institute)
Jung, Yeong Ho (Underwater Ecology Institute)
Kim, Yu Jin (Seacam)
Kim, Dong Wook (Seacam)
Publication Information
Korean Journal of Environmental Biology / v.39, no.1, 2021 , pp. 19-31 More about this Journal
Abstract
We investigated the distribution characteristics of mussels (Mytilus coruscus) growing in the Geomundo sea area by water depth. The research was also conducted to identify the surrounding benthic organisms. Mussels showed high density and low obesity in low water depths. The lower the density, the higher the obesity level appeared in deeper water. The morphological characteristics also appeared to increase as the water depth deepened. In addition, the shell length and total weight were more strongly correlated at a depth of 12 m than at 2 m. The total weight by the growth of the shell length and shell height was affected by the water depth. The analysis showed that the density and biomass of the algae inhabiting the surroundings decreased somewhat as the water depth increased. In benthic animals, the number of mussels tended to decrease slightly at the point where oysters dominated, at a depth of 2 m. Conversely, the number of oysters tended to decrease in deeper water dominated by mussels. Thus, the spatial competition between oysters and mussels was affected by the water depth. Also, mussels did not appear in areas where large algae flourished, suggesting that the survival of mussels was affected by the presence or absence of large algae.
Keywords
Mytilus coruscus; mussel; spatial competition; distribution; benthic fauna;
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