| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Benthic communities were monitored at 13 stations in Matsukawaura lagoon (Soma-city, Fukushima Pref.) during 2012 to 2014 after the 3.11 tsunami and comparison was made with those before the tsunami. Species richness and abundances of benthic communities were mostly recovered after 1 year, however, community compositions were changed year by year including a decrease in mollusks and was still on the way to recover. According to the analysis in respective stations, the recovery of the benthos was not related with the disturbance strength of the tsunami, and it seemed to be affected by seawater exchange and sediment quality. In addition, after checking the existence of the large-sized benthos around Matsukawaura, the number of species inhabited decreased in the area where the construction of the embankment advanced. Therefore, it was suggested that habitat regeneration and conservation were important for accomplishing the recovery of benthic communities.
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