| Title Transcription | DICTYOCHAEAE PEDIASTRUM ノ シュツゲン ケイコウ カラ ミタ ヨドエ ヘイヤ ノ チュウキ カンシンセイ コカンキョウ ヘンセン
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| Title Alternative (English) | Holocene Paleoenvironmental Change in Yodoe Plain Tottori Prefecture, Southwest Japan, Based on the Analyses of Planktic microfossils Dictyochaeae and Pediastnum
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| File | |
| language |
jpn
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| Author |
Arakawa, Yoshitake
Tokuoka, Takao
Watanabe, Masami
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| Description | Relative abundances of marine plankton Dictypochaeae and freshwater plankton Pediastrum were systematically determined from a drill core through Holocene sediments in Yodoe Plain, to decipher environmental changes in the Paleo-Yodoe Lake. Compared with the difficult and time-consuming diatom assemblage analysis normally used, the above method offers a simple but valuable method for the study of environmental changes in brackish lakes, as the two species concerned are easy to identify under the microscope due to their characteristic features. Chemical analyses of TOC, TN, C/N, TS and C/S were also made from the same core. It is well-known that total sulfer（TS）and carbon-nitrogen ratio（C/N）are sensitive indicators of freshwater-brackish-marine conditions. Environmental indicators from the chemistry are compatible with those derived from the plankton abundances.
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| Subject | chemical analysis
paleoenvironment
Dictyochaeae-analysis
Pediastrum-analysis
Yodoe plain
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| Journal Title |
Laguna : 汽水域研究
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| Volume | 7
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| Start Page | 23
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| End Page | 28
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| ISSN | 21852995
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| Published Date | 2000-03
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| NCID | AN10439529
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| Publisher | 島根大学汽水域研究センター
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| NII Type |
Departmental Bulletin Paper
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| Format |
PDF
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| Text Version |
出版社版
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| OAI-PMH Set |
Estuary Research Center
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| 他の一覧 |
