| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Research Abstract |
Dynamic evolutionary processes of the three marine planktonic diatom groups have been revealed by detailed diatom analysis of deep sea cores recovered in the middle- to high-latitude North Pacific, the low-latitude tropical Pacific and the Southern Oceans. Crucidenticula is a warm water extinct diatom genus composed of four evolutionay lineages, each of which expanded its geographic distribution into the high-latitudes during warm period of early to middle Miocene. The extinct diatom genus Denticulopsis consists of seven lineages, most of which are cold water diatoms showing a typical bipolar geographic pattern except for one cosmopolitan lineage. Neodenticula is an extant cold water diatom group born in the late Miocene. It shows a bipolar distribution during the late Miocene, but the Southern Ocean population became extinct in the early Pliocene.
|
