Simple estimation of penetration rate of light in intertidal sediments |
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| Authors: | Kazuhiko Ichimi Kuninao Tada Shigeru Montani |
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| Institution: | (1) Marine Environment Research Station, Kagawa University, Kamano, Aji, Takamatsu, Kagawa 761-0130, Japan;(2) Faculty of Agriculture, Kagawa University, Ikenobe, Miki, Kita, Kagawa 761-0795, Japan;(3) Graduate School of Environmental Sciences, Hokkaido University, Kita-ku, Sapporo, Hokkaido 060-0810, Japan |
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| Abstract: | A simple estimation of light penetration in tidal flat sediments was developed using various sediment size fractions and their
attenuation rate of irradiance. The attenuation coefficients of the sediment size fractions of 63–125, 125–250, 250–500, 500–1000
μm and 1000–2000 μm were 8.10, 4.08, 2.92, 2.12 and 1.44 mm−1, respectively. Using the average attenuation coefficient of the particle size fractions in the sediment, the calculated attenuation
coefficient agreed well with the actual attenuation coefficient. The method presented gives a photo-parameter to predict productivity
in intertidal sediments, given only the particle size fraction. |
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| Keywords: | Intertidal sediment light benthic algae primary production |
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