抄録
In a previous report, we evaluated the biofouling properties of 15 various kinds of plastic and metal test plates by using a modified version of Miyajima's method. However, fouling values alone do not provide quantitative information on volume or weight of attached organisms. In this work we investigate the relationship between the fouling value and wet weight of fouling organisms on the plates. Six plates with different fouling properties were selected: PMMA, FRY, and SUS as highly fouling materials, and Silicone-Rubber, Cu-Ni9/1, and Cu as less fouling materials. These test plates were immersed in sea water for 405 days, from Dec. 19, 1993, to Jan. 25, 1995. Each month they were recovered and the Fouling Value (FV) was evaluated while also measuring the accumulated wet weight (W) of the attached organisms with a spring balance. FV and W showed a linear relationship on a logarithmic scale: LogW=1.886LogFV-1.830. Using this relationship, we can estimate the wet weight of marine sessile organisms attached to the surface of boat and ship hulls, and various kinds of marine structures, based on their FV.
