|
|
|
한국환경생물학회 / v.18, no.1, 2000년, pp.21-31 
|
1998/1999 남극 킹조지섬 마리안소만 표층수에 서식하는 미세조류의 계절적 변동
( Seasonal Variation of Microalgae in the Surface Water of Marian Cove, King George Island, the Antarctic 1998/1999 ) |
| 강재신;강성호;이진환;최돈원;이상훈; 한국해양연구소 극지연구센터;한국해양연구소 극지연구센터;상명대학교 자연과학대학 생물학과;강원대학교 지질학과;한국해양연구소 극지연구센터;
|
|
|
 |
|
| |
| 초 록 |
|
|
| We investigated seasonal variation of microalgal assemblages, sea water temperature, salinity and suspended solid and the parameters measured daily from January 1998 to October 1999 at a nearshore shallow-water in Marian Cove, Maxwell Bay, King George Island, the Antarctic. Annual mean surface water temperature was -0.3$0^{circ}C$ and the highest water temperature was 4.53$^{circ}C$ (22 January 1999) and the lowest water temperature was -2.07$^{circ}C$ (23 August 1998). Annual mean salinity was 33.38 psu, ranging from 42.80 psu (6 January 1999) to 19.50 psu (6 June 1999). Annual mean suspended solid (SS) during two years was 34.14 mgㆍ1$^{-1}$, ranging from 60.62 mgㆍ1$^{-1}$(7 March 1998) to 12.90 mgㆍ1$^{-1}$ (26 December 1998). Chlorophyll $alpha$ (Chl $alpha$) concentrations were measured in order to know seasonal variations of microalgae in the surface seawater. Annual mean of total Chl a concentration was 0.55$mu extrm{g}$ㆍ1$^{-1}$, the highest Chl $alpha$ concentration (12.16$mu extrm{g}$ㆍ1$^{-1}$) appeared in 4 October 1998, the lowest Chl $alpha$ concentration appeared 0.19$mu extrm{g}$ㆍ1$^{-1}$, Monthly mean total Chl $alpha$ concentration was high in October 1998 (1.32$mu extrm{g}$ㆍ1$^{-1}$) and low in July on 1998 (0.28$mu extrm{g}$ㆍ1$^{-1}$). Annual mean nano-sized Chl $alpha$ concentration was 0.40$mu extrm{g}$ㆍ1$^{-1}$, monthly mean nano -sized Chl $alpha$ concentration was high in November 1998 (0.90$mu extrm{g}$ㆍ1$^{-1}$), and low in July 1999 (0.22$mu extrm{g}$ㆍ1$^{-1}$). Annual mean micro-sized Chl $alpha$ concentration was 0.15$mu extrm{g}$ㆍ1$^{-1}$ monthly mean micro-sized Chl $alpha$ concentration was high in October 1998 (0.81$mu extrm{g}$ㆍ1$^{-1}$), and low July 1998, January, February and September 1999 (0.05$mu extrm{g}$ㆍ1$^{-1}$). More than 65% of total Chl $alpha$ was concentrated during spring and summer time between October and March. Microalgal variation appeared to be due to physical factors of seawater in the Antarctic nearshore from 1998 to 1999. The reason why micro-sized Chl $alpha$ did not increase during austral summer was the bay had been frozen by decrease of water temperature. We think that total microalgal abundance was decreased because the summer microalgal abundance was determined by variation of water temperature during winter season. [Chl $alpha$ concentration, Microalgal assembalges, Seasonal variation, the Antarctic nearshore]. |
| |
| 키워드 |
|
| |
|
|
|
|
환경생물 / v.18, no.1, 2000년, pp.21-31
한국환경생물학회
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011921491557)
언어 : 한국어 |
|
| 논문 제공 : KISTI 한국과학기술정보연구원 |
|
|
|
|
|
|
