サンゴ礁における窒素・リン循環の複合モデル

概要

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Recently the experimental result which insist nutrient up-take depends on flow rate by ATKINSON (1987) and ANDREW (1998) has been reported. The aim of this study is re-determine of gross phosphorous and nitrogen up-take which determined by MIZUOKAMI (1995 MS) and KUROSAWA (1996 MS). The statistical examination between calculation and observation for nitrate correla-tion coefficient was γ^2=0.88 and for nitrate was γ^2=0.76. But for phosphate and nitrite correlation coefficient was very low, suggesting being another fluxes. Gross uptake rate of nutrient in 1994 was 1.4 times higher than in 1993. Because flow rate in 1994 was 3.4 times higher than in 1993,although TIN concentration in 1994 was same as that 1993. Assuming a zooxanthellae's C/N ratio of 20,gross organic carbon production rate calculating with this model was smaller than that calculated change of DO concentration in 1993,but it was same order of magnitude as DO in 1994.