| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2013: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2011: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Research Abstract |
We have clarified the microbial processes below: In the epilimnion of Lake Biwa during the stratified period, phytoplankton produce protein-like dissolved organic matter (DOM), and the DOM is converted into humic-like DOM through decomposition by planktonic bacteria. The humic-like DOM is transported to the hypolimnion through winter vertical mixing. In the hypolimnion during the stratified period, only one bacterial species, CL500-11 (phylum Chloroflexi), predominates, and bacterivorous Kinetoplastid flagellates also dominate. So, in the hypolimnion of Lake Biwa during the stratified period, there may be the unique microbial food webs where humic-like DOM is consumed by bacterial assemblages predominated by CL500-11, and where those bacteria are grazed by bacterivorous protists such as Kinetoplastids.
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