Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Algal Pigments and their Degradation Products in Suspended and Sinking Particulate Material in the Gulf of Mexico

멕시코 만의 부유 및 침강고형물에 존재하는 조류색소 및 그 분해산물

  • Noh, Il (Dept. of marine environmental Engineering, Korea Maritime University)
  • Published : 1996.04.01
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Abstract

Photosynthetic pigments and their degradation products in suspended and sinking particles collected from the Gulf of Mexico waters 1987~88, were measured using High Performance liquid Chromatography (HPIC). The short term variations in flux rates of chlorophylls and carotenoids as well as-their degradation products were compared at the mesoscale cyclonic and anticyclonic circulation features (cold joie rink and warm core ring). Chlorophyll a was the predominant porphyrin of suspended particulate matter at both CCR -and WCR. Among carotenoid pigments, 19'-hexanoyloxyfucoxanthin, which is a biomarker of prymnesiophytes, was dominant pigment at both rinds. Phaeophorbide a, which is produced through the Brazing processes of grazers, was the predominant degraded pigment in sinking particles ai the study aiea. Total pigment flux in CCR was an order of magnitude higher than that in WCR. Less than l% of the standing stock of the pigments measured sank out of the upper 200m of the WCR on any given day. Thus, suspended particulate matter in Gulf of Medico was not recycled rapidly.

멕시코 만에서 1987~1988년에 부유 및 칩강입자에 존재하는 광합성 색소 및 그 분해산물은 HPLC를 이용하여 측정하였다. 클로로필과 카로틴계열 및 그 분해산물의 단기 침하율이 Cold-Core Ring 과 Warm-Core Ring에서 비교 분석되었다. 클로로필 a는 CCR과 WCR에서 공통적으로 우세한 포르피린이었으며 카로틴계열 색소 중에는 19'-hwxanoyloxyfucoxanthin이 우세하였다. 초식자의 섭이과정에서 생성되는 것으로 알려진 phaeophobide a가 조사지역 침강입자에 우세하게 나타나는 분해색소 이었따. CCR에서의 전체색소 침하율은 WCR보다 한단게 높게 나타났다. WCR에서 색소현존량은 하루에 1% 이하가 유광밖으로 침하 되었는데 이 사실은 멕시코 만에서 부유고형입자의 재순환은 빠르게 일어나고 있지 않음을 의미한다.

Keywords

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