Environmental Agency (1996): The technological theme in evaluation method of environmental impact assessment (in Japanese).
Ishikawa, K (1982): Relationships between fluctuated environmental factors and changes of phytoplankton population structure in Oppa Bay, Miyagi. Bull. Nat. Res. Inst. Pollution and Resources, Vol.12(2), 49-62.
Ishikawa, K (1989): Relationship between bottom characteristics and benthic organisms in the shallow water of Oppa Bay,Miyagi. Marine Biol., 102, 265-273.
Ishikawa, K (unpublished): Natural fluctuations of plankton composition and abundance in summers from 1993 to 1995 in Tokyo Bay.
Oceanographic Soc. Japan (1994): What is the environmental problem in marine? (in Japanese). Koseisya-Koseikaku, Pub., Tokyo.
Volta, G. and A Servida (1992): Environmental indicators and measurement scales,181-188. In Ed. by AG. Colombo, "Environmental Impact Assessment", Kiuwer Academic Pub.
Wolfe, D. A (1986): Estuarine variability, Academic Press Inc.
Table 1. A History of Japanese Efforts to Preserve water Quality
