Browse > Article

Development and Application of the Ecosystem Model in Brackish Lake Obuchi, Japan  

Kondo, Kunio (Dept. of Radioecology, Institute for Environmental Sciences)
Inaba, Jiro (Dept. of Radioecology, Institute for Environmental Sciences)
Hosoda, Masahiro (Metocean Environment Inc.)
Kutsukake, Hiroshi (Metocean Environment Inc.)
Seike, Yasushi (Dept. of Material Science, Shimane Univ)
Nakata, Kisaburo (Faculty of Marine Science and Technology, Tokai Univ)
Shinji, Ueda (Dept. of Radioecology, Institute for Environmental Sciences)
Publication Information
Korean Journal of Ecology and Environment / v.37, no.4, 2004 , pp. 448-454 More about this Journal
Abstract
In order to evaluate the water quality (N, P and C) and the biological mass balance of semi-enclosed brackish Lake Obuchi, Japan, an ecosystem model was developed and applied to the lake, using the flow field calculated by a hydrodynamic model. The time series data of the observed tide level, river discharge and meteorological parameters from January 2001 to December 2002 were incorporated as the parameters of the hydrodynamic model. Water quality and biomass balance were estimated by the ecosystem model, and simulated fluctuations In water quality agreed with our observations. The carbon contents of POC, phytoplankton and zooplankton in the lake were calculated by the model at an average 7200, 1500 and 22 kg, respectively, which somewhat agreed with our observations of POC (5900 kg), phytoplankton (3800kg), and zooplankton (150kg).
Keywords
brackish Lake Obuchi; ecosystem model; water quality; butrient; material flux;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Rokkasho Village. 2002. Statistical book of Rokkasho-Village, pp. 7. (in Japanese)
2 Ueda, S., K. Kondo, J. Inaba, M. Hosoda, M. Yokoyama and K. Nakata. 2004a. Development of 3-D hydrodynamic modeling in brackish Lake buchi, Rokkasho Village, Japan, bordered by nuclear fuel cycle facilities. J. Adv. Mar. Sci. Tech. Soci. 9: 81-97
3 Ivlev, V. S. 1945, The biological productivity of water. - Uspekhi Sovrem. Biol. 19: 98-120
4 Ueda, S., H. Kawabata, H. Hasegawa and K. Kondo. 2000. Characteristics of fluctuations in salinity and water quality in brackish Lake Obuchi. Limnology 1: 57-62
5 Taguchi, K., K. Nakata and T. Ichikawa. 1999. A 3-D simulation of long-term variability in the flow field and T-S structure in the Ise-Mikawa Bay estuary. J. Adv. Mar. Sci. Tech. Soci. 5: 37-48
6 Ueda, S., Y. Ohtsuka and K. Kondo. 2004b. Inventories of 239±240Pu, 137Cs, and excess 210Pb in sediment cores from brackish Lake Obuchi, Rokkasho Village. Japan. J. Radioanal. Nuc. Chem. 261: 277-282
7 Ueda, S., H. Kawabata, S. Hisamatsu, J. Inaba, M. Hosoda, M. Yokoyama and K. Kondo. 2002. Structural characteristics of the halocline in shallow brackish Lake Obuchi. Japanese J. Limnol. 63: 125-134