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Kafe 바로가기바다 : 한국해양학회지 = The sea : the journal of the Korean society of oceanography, v.19 no.4, 2014년, pp.232 - 242
권형규 (부경대학교 해양과학공동연구소) , 김현정 (부경대학교 해양학과) , 양한섭 (부경대학교 해양학과) , 오석진 (부경대학교 해양학과)
We investigated the interspecific competition between the harmful dinoflagellate Cochlodinium polykrikoides and diatom Skeletonema sp. based on the utilization and uptake of dissolved organic nutrients. C. polykrikoides and S. costatum were able to grow using dissolved organic nitrogen (DON) and dis...
We investigated the interspecific competition between the harmful dinoflagellate Cochlodinium polykrikoides and diatom Skeletonema sp. based on the utilization and uptake of dissolved organic nutrients. C. polykrikoides and S. costatum were able to grow using dissolved organic nitrogen (DON) and dissolved organic phosphorus (DOP) as well as dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP). This result indicates that the utilization of dissolved organic nutrients may play a role in surviving strategy in the DIN or DIP-limited environments. The half-saturation constants (Ks) of urea and glycerophosphate (glycero-P) calculated from uptake kinetics experiment of C. polykrikoides was lower than those of Skeletonema sp. This result indicates that Skeletonema sp. have higher affinity for dissolved organic nutrients, such as urea and glycero-P, than C. polykrikoides. Although Skeletonema sp. have higher affinity of dissolved organic nutrients, C. polykrikoides could effectively uptake for urea and glycero-P at sub-saturating nutrient concentrations (
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핵심어 | 질문 | 논문에서 추출한 답변 |
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용존 유기 영양염이 해양으로 유입되는 경로는 무엇인가? | , 1991). 이러한 용존 유기 영양염은 미세 조류나 박테리아의 대사작용에 의한 배출(excretion), 동물플랑크톤의 섭식작용 및 육상으로부터 공급 등의 경로를 거쳐 해양으로 유입되며, 그 조성은 매우 복잡하고 다양하다(Antia et al., 1991). | |
해수 중 영양염은 무엇으로 구분되는가? | 해수 중 영양염은 용존 무기 영양염과 용존 유기 영양염으로 구분되며, 전자는 용존 무기 질소(DIN; dissolved inorganic nitrogen)와 용존 무기 인(DIP; dissolved inorganic phosphorus)과 같은 제한 영양염이며, 후자는 여러 가지 분자량을 가지는 화합물이다. 일반적으로 식물플랑크톤은 용존 무기 영양염을 성장에 이용하지만, 용존 무기 영양염이 부족한 환경에서는 수주 내 존재하는 다양한 기원의 용존 유기 질소(DON; dissolved organic nitrogen)와 용존 유기 인(DOP; dissolved organic phosphorus)와 같은 유기 영양염을 성장에 이용하게 된다(Antia et al. | |
적조를 일으키는 종인 유해성 와편모조류는 우리나라에 언제, 어디서 처음으로 발생하였는가? | , 2013a). 우리나라에서는 1982년 진해만에서 처음 발생한 이래 매년 여름철 마다 광범위 하게 발생하여 경제적 손실과 해양생태계의 황폐화를 초래하고 있다. 특히, 지난 2013년에는 1995년의 746억원 이후 최고 규모인 약 249억원의 손실을 발생시켰다(Park et al. |
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