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Open AccessArticle

The Influence of Manila Clam (Ruditapes philippinarum) on Macrobenthos Communities in a Korean Tidal Ecosystem

1
Marine Ecosystem and Biological Research Centre, KIOST, 385, Haeyang-ro, Yeongdo-gu, Busan 49111, Korea
2
Korea Maritime University, Dongsam 2-dong, Yeongdo-gu, Busan 49112, Korea
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(10), 4205; https://doi.org/10.3390/su12104205
Received: 20 April 2020 / Revised: 18 May 2020 / Accepted: 19 May 2020 / Published: 20 May 2020
(This article belongs to the Special Issue Harmful Organisms and their Management for Sustainable Environment)
We investigated the biological impact of extensive Manila clam (Ruditapes philippinarum) aquaculture on macrobenthic communities in a tidal ecosystem in Korea. We collected macrobenthos (>1 mm in length) samples seasonally in the intertidal zone in Geunsoman, Taean, Korea from April 2011 to December 2014. We identified 146 macrobenthos species, including 60 polychaetes, 53 crustaceans, and 16 mollusks. A biota–environment matching (BIO–ENV) analysis indicated that the benthic community was affected by mean sediment grain size (Mz), total organic carbon (TOC), and R. philippinarum biomass. We found no correlation between R. philippinarum and the main dominant species (Heteromastus filiformis, Ceratonereis erythraeensis, and Ampharete arctica), which have a different feeding strategy; thus, this may result in a lack of competition for food resources. In addition, we found that flourishing R. philippinarum positively affects the macrobenthos density but negatively affects the biodiversity index. Moreover, competition between species does not occur clearly, and environmental variables (sediment, organic carbon) are important. View Full-Text
Keywords: Manila clam; Ruditapes philippinarum; macrobenthos; feeding type; diversity Manila clam; Ruditapes philippinarum; macrobenthos; feeding type; diversity
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Kim, S.L.; Lee, H.G.; Kang, S.M.; Yu, O.H. The Influence of Manila Clam (Ruditapes philippinarum) on Macrobenthos Communities in a Korean Tidal Ecosystem. Sustainability 2020, 12, 4205.

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