| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Outline of Final Research Achievements |
To survey the influence of the Great East Japan Earthquake to intertidal organisms, succession of intertidal communities have been observed at a quay in Okirai Bay, Iwate Prefecture for three years.
The results were as follows: 1) The succession observed after the earthquake was not special, but was the same succession occurred when predation pressure by sea urchins Strongyrocentrotus nudus would be lowered artificially in the field. 2) They decreased biodiversity of shallow water communities. 3) Intertidal barnacle Semibalanus cariosus plays a role to increase biodiversity by offering their shells as a substrate to other sessile organisms. 4) If the earthquake had occurred at other season, different succession would have been observed. 5) Barge and the tugboats settled alien barnacles on the hull in their home port have brought them involuntarily to the area that were suffered from the Tsunami and needed restoration. 6) The same events will be able to occur when they returned.
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