| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
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: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
A comprehensive study was performed to integrate mortality event data sets of 33 marine mammal species, and outputs of a Finely-Advanced Transboundary Environmental model (FATE) predictions on exposure levels of polychlorinated biphenyls (PCBs), into a single environmental risk assessment scheme. We defined critical exposure levels (CELs) of PCBs above which mass mortality events are likely to occur, and identified marine pollution ’hotspots’ such as the Mediterranean Sea and north-western European coasts. The proposed CELs help can design both thresholds and boundaries for chemical pollution (whatever the toxic substances), which will definitely play a role in the emerging global paradigms such as Planetary Boundaries and Boundary Risk for Humanity and Nature. Our environmental risk assessment scheme can also be applied to address the relative importance of chemical pollution versus ‘noise pollution’ on mass mortality events of marine mammals in a quantitative fashion.
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