Author(s)

S. Yamochi & K. Oda

Abstract

Characteristics of the productivity structure in the coastal areas along the Kansai International Airport Island, Japan S. Yamochi and K. Oda Department of Environmental Urban Engineering, Osaka City University, Japan. Abstract Prior to the second phase of work of the Kansai International Airport Island, areal surveys were conducted in 1998-1999 in the vicinity of the island and the annual production of phytoplankton, zooplankton, seaweed, phytal animals, sedentary animals and benthic animals were examined. Macrobenthic animals ranked first in carbon biomass (18.1 ton C) in the planned reclamation area, followed by seaweed (14.6 ton C) and phytoplankton (14.3 ton C). Annual production of *y carbon per unit area was highest for phytoplankton (392 gC/m /year), and then seaweed was 360 gC/m^/year, which was comparable to the phytoplankton production. However, planktonic organisms accounted for 98% of the total production

Keywords