|Budget Amount *help
¥29,770,000 (Direct Cost: ¥22,900,000、Indirect Cost: ¥6,870,000)
Fiscal Year 2016: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2014: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2012: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
|Outline of Final Research Achievements
From both viewpoints of fisheries and oceanography, zooplankton size structure is a prime important factors to determine their flux. Concerning zooplankton size spectra, following four topics were evaluated: 1. Spatial distribution of neighboring water of Japan, 2. Geographical distribution in the North Pacific, 3. Vertical distribution down to greater depths covering whole North Pacific, 4. Yearly changes (1946-2012) in the Chukchi Sea.
Concerning energy transfer within the zooplankton community, bottom-up control and high energy transfer efficiencies were observed for the western subarctic Pacific. In the western subarctic Pacific, zooplankton community was dominated by large-sized copepod Neocalanus spp. For vertical distribution, regional differences in zooplankton community were recognized even in the deep-sea down to 2000 m. Inter-annually, zooplankton biomass in the Chukchi Sea increased through 1946-2012.