| Title | 파로호 수중생태계에서의 미생물 분포 및 활성도 | ||
| Author | 안태석 · 이동훈 * | ||
| Address | 강원대학교 자연과학대학 환경학과; * 강원대학교 자연과학대학 생물학과 | ||
| Bibliography | Korean Journal of Microbiology, 26(3),230-236, 1988 | ||
| DOI | |||
| Key Words | bacterial distribution, heterotrophic activity, Lake Paro | ||
| Abstract | The distributions of bacterial numbers and activities were studied bimonthly in 1987, at 3 sites in Lade Paro for elucidating the changes by disturbance of aquatic ecosystem. The total bacterial number was 0.3×10^5 - 13.1×10^5 cells/ml. The heterotrophic bacterial number had the variance from 1.9×10^3 CFUs/ml to 3.1×10^4 CFUs/ml and the variation trend was similar to that of the total bacterial number. The proportions of alpha-glucosidase or beta-glucosidase releasing bacteria showed temporal changes rather than spatial changes. The proportions of phosphatase releasing bacteria had the maximum values, 22.7-83.0%, in July. The electron transport system activity revealed the variation from 480㎍O_2/l/day to 1696㎍O_2/l/day and higher values at upper stream and in summer. The degradation fraction by phosphatase was 0.4-9.1%/h and increased with temperature. The maximum value of heterotrophic activity was 8.2%/h in summer. Eventhough the distributions of total bacteria and heterotrophic bacteria were affected by the water disturbance but microbial activities and proportions of the specific enzyme releasing bacteria were not affected. | ||
| Download PDF | Kor_260312_230-236p.pdf | ||