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January 1, 2026Journal of Japan Society on Water EnvironmentOpen Access

Decomposition Rates of Particulate and Dissolved Organic Matters in Seawater of Osaka Bay, Japan

Motoharu Suzuki Tateki FUJIWARA Yusuke NAKATANI Chihiro KASHIMA

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Key Points

The average degradation rate of particulate organic carbon is 0.12 day-1, with a degradation time of 8.5 days.
In comparison, dissolved organic carbon shows slower degradation, averaging 0.031 day-1 over a 32-day timeline.
An experimental biodegradation study was conducted over 100 days to assess the breakdown of POC and DOC.
Significant proportions of dissolved organic carbon, about 48%, are resistant to degradation, highlighting concerns for marine science.

Implication

Experimental analysis reveals biodegradation rates of organic matter in seawater of Osaka Bay, indicating significant variability.

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Cite This Study

Suzuki et al. (2026) studied this question.

synapsesocial.com/papers/69a75d8ec6e9836116a27b3b https://doi.org/10.2965/jswe.49.27

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