낙동강 하류부에서 Stephanodiscus속에 의한 수화 발생시 미생물먹이망 군집 동태 = The Community Dynamics of Microbial Food Web during Algal Bloom by Stephanodiscus spp. in Downstream of Nakdong River

다국어 초록 (Multilingual Abstract)

The bloom of the genus Stephanodiscus was gradually extinguished after 18 April. Counts of bacterial population were increased as the diatom bloom was disappeared. Numbers of the heterotrophic nanoflagellates and ciliates were also increased during the disappearance of the bloom. The densities of the mesozooplankton, the major predator of the diatoms, started to increase in April. However, their growth was suppressed during the bloom period of the diatoms (from January to March). During the bloom period of the diatoms, the monthly average value of the basic productivity amounted up to 11,765.7 mgC m-2 day-1, which is relatively high value considering the low temperature and light during that period. The growth rate of phytoplankton in March, when the bloom was beginning to be supressed was 0.007. The growth rate of phytoplankton was negative value in April when the decreasing of the algal density was started.

참고문헌 (Reference)

1 환경부, "호소환경조사법"

2 김범철, "부영양한 낙동강수계에서 유기물오염에 대한 조류 1차생산성 기여도" 11 : 231-237, 1996

3 이진애, "낙동강 하구 생태계 식물성 플랑크톤의 일차생산성" 27 (27): 69-78, 1994

4 국립환경연구원, "낙동강 수계별 오염부하량 조사연구(II)"

5 김현우, "과영양화 상태의 강에서의 수질, 플랑크톤 군집의 동태 및 동물플랑크톤에 의한 미생물 먹이환의 조절" 부산대학교 1999

6 Bartholomew JW, "Variables influencing results and the precise definition of steps in gram staining as a means of standardizing the results obtained" 37 : 846-858, 1962

7 Karen GP, "The use of DAPI for identifying and counting aquatic microflora" 25 (25): 943-948, 1980

8 Azam F, "The ecological role of water column microbes in the sea" 10 : 257-263, 1983

9 Palleroni NJ, "Stenotrophomonas, a new bacterial genus for Xanthomonas maltophilia (Hugh 1980) Swings et al. 1983" 43 : 606-609, 1983

10 Thomas W, "Response of the microbial loop to the phytoplankton spring bloom in a large prealpine lake" 35 (35): 781-794, 1990

11 Gude H, "Loss processes influencing the growth of planktonic bacterial population in lake Constance" 8 : 795-810, 1986

12 Kemp PF, "Handbook of Methods in Aquatic Microbial Ecology" Lewis Publishers 1993

13 Holt JG, "Bergey’s Manual of Determinative Bacteriology 9th Eds" Williams & Wilkins 1994

14 Simon M, "Bacterial response to seasonal changes in primary production and phytoplankton biomass in lake Constance" 9 : 535-552, 1987

15 Bell R, "Assessing phytoplankton and bacterioplankton preoduction during early spring in lake Erken, Seweden" 48 : 1221-1230, 1984