Effect of the feeding behaviour of macrobenthos on changes in environmental conditions of intertidal flats

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書誌事項

公開日
1980-01
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
DOI
  • 10.1016/0022-0981(80)90103-3
公開者
Elsevier BV

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説明

Abstract This experimental study was conducted to investigate how macrobenthos feeding behaviour changes the environmental conditions of intertidal flats. Three representative species living in Nanakita River Estuary, Miyagi Prefecture, Japan were studied. Both the deposit-feeding polychaete Neanthes japonica (Izuka) and the bivalve Nuttallia olivacea (Jay) feed on fine particulate deposits containing rich organic materials on the surface of the flats. Thus, they decrease the organic matter content of the substratum and cause a sandy condition. The suspension-feeding bivalve Laternula limicola (Reeve), however, does not feed on fine particles deposited on the flats and, therefore, does not play an important role in changing the organic matter content of the substratum. When organic matter accumulates gradually on the surface, Eh potentials fall and reducing conditions occur in the substratum. Benthic animals living under these conditions may increase Eh potentials by their feeding behaviour and movements.

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