| Budget Amount *help |
¥28,340,000 (Direct Cost: ¥21,800,000、Indirect Cost: ¥6,540,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
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| Outline of Final Research Achievements |
To evaluate the effects of climate changes on the marine lower trophic level ecosystems, I analyzed wet weight biomass of the formalin-preserved zooplankton samples collected by the same method in the southeastern Bering Sea shelf during the summers of 1955 to 2013. Size and taxonomic accounts of the samples for the consecutive two years belonging to the four different climate regimes were also analyzed by the imaging device: ZooScan. For the field imaging analyzing devices, I developed the frame-mounted camera for quantification of the macro-sized gelatinous zooplankton (jellyfish). In 2017 and 2018, when the timing of the sea ice melting was greatly different, I analyzed the abundance and biomass of each trophic level from phytoplankton to seabirds, and evaluated the relationship between environmental variables and biomasses at each trophic level.
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