The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Attaching Nature and Community Variation of Epiphytic Diatoms on Leaf of Zostera spp.

Zostera속 해초에 부착하는 규조류의 부착 특성과 해초 종별 군집 변화

  • 정미희 (국립수산과학원 수산해양종합정보과) ;
  • 윤석현 (국립수산과학원 수산해양종합정보과) ;
  • 윤원득 (국립수산과학원 수산해양종합정보과)
  • Received : 2010.10.04
  • Accepted : 2010.11.25
  • Published : 2010.11.30
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Abstract

Epiphytic diatoms are very important organisms in the seagrass ecosystem because their colonization on leaves increases microtopography and provides attachment sites that make the leaves more hospitable for other epiphytes. Epiphytic diatoms were attached to the leaves in the following 3 manners: (1) parallel to the cells of the seagrass leaf or by molding the shape of the diatom along the cell shape of the leaf; (2) with increasing diatom density toward the leaf tip; (3) Cocconeis species as attaching species than the Naviculoid species as the second attaching species on the leaf tip. In addition, the epiphytic diatom communities on Zostera marina leaves differed from those on the Zostera japonica leaves, but were very similar to the epiphytic communities on Zostera caespitosa leaves. Our results suggest that the epiphytic community on seagrass leaves varied according to the leaf shape such as leaf length and width, but the leaf cell shape or size did not influence the dynamics of the diatom communities.

부착규조류는 초기 부착 생물로서 부착 천이과정에서 부착성 박테리아 층 위 해초 잎 표면 맨 아래 층에 부착함으로써 잎 표면의 미세 지형을 결정하고 다른 부착 생물에게 알맞은 부착환경을 제공해 주는 중요 생물로 부착 기질과의 상호 작용에 대한 연구는 부착 생물 생태 연구에 기초적인 연구라고 할 수 있다. 부착규조류가 해초에 부착 서식하는 형태는 크게 3가지로 나눌 수 있으며 1) 해초 잎 세포에 평행하게 또는 세포 변형을 통한 부착 2) 해초 잎 끝부분에 주로 밀집하여 서식 3) 잎의 끝에서 2차 부착 규조류인 줄기를 이용한 규조류보다 1차 부착규조류인 타원형의 규조류 밀집 지역이 많은 것이었다. 또한, 해초의 종별 규조류의 부착 군집 변화를 살펴보면 우선 길이와 너비의 차이가 많으나 세포의 모양이나 크기가 비슷한 Z. marina와 Z. japonica는 규조류의 출현종수, 현존량, 우점종의 차이가 컸던 반면 길이와 너비는 비슷하나 세포의 모양과 크기가 다른 Z. marina와 Z. caespitosa의 경우에는 규조류의 출현종수, 현존량, 우점종이 유사한 것으로 나타났다. 따라서, 본 논문에서는 해초의 미세지형이 될 수 있는 세포의 모양보다 해초의 길이와 너비 등 외형의 차이가 부착규조류 군집 변화의 주요 원인인 것으로 나타났다.

Keywords

Acknowledgement

Grant : 하구어장 실효성 평가 및 관리전략 개발

Supported by : 국립수산과학원

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