Journal of Marine Life Science (한국해양생명과학회지)

The Korean Society of Marine Life Science (한국해양생명과학회)
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Seagrass (Zostera marina) Transplantation and Monitoring for Replacement Habitat

대체서식지 조성을 위한 거머리말 이식 및 모니터링

  • Hong, Seong Jae (Department of Ecological Engineering, Pukyong National University) ;
  • Choi, Chang Geun (Department of Ecological Engineering, Pukyong National University)
  • Received : 2018.05.29
  • Accepted : 2018.06.10
  • Published : 2018.06.14
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Abstract

We investigated natural habitat of seagrass and created replacement habitat to monitor for restoration of the habitat which is expected to be damaged at Cheonseong harbor in Busan. Depth of water for natural seagrass habitat at Cheonseong harbor was 1.2~3.1 m and the water temperature was 7.4℃, salt concentration was 29.1 psu and pH was 8.05 in January, 2013. The density of seagrass was 167.1±16.4 shoots m-2, the total length was 48.5±18.1 cm, the height of sheath was 9.1±2.8 cm and the width of leaf was 4.8±1.1 cm, respectively. We transplanted in December 2014 and monitored the habitat during 9 months after transplanted. In the beginning, the density of seagrass was decreased to 8.5 shoots patch-1 in January and was increased to 19.0 shoots patch-1 in April. The total height were 73.3±2.9~121.3±6.1 cm, the length of sheath were 9.6±0.6-21.0±1.2 cm, the width of leaf were 5.7±0.1~6.8±0.2 mm. It showed that all values were increased steadily until July and was decreased rapidly in August. Flowering shoot, which was not observed in the beginning of transplanting, started to be spotted in March and was continued to be seen during the monitoring period. We were able to observe seedling of germinated seagrass in seeds in the replacement habitat next year.

부산시 천성항 내 훼손이 예상되는 거머리말 서식지의 복원을 위해서 기존 서식지의 현황조사를 실시하고 인근 두문리 해안에 대체서식지를 조성하여 모니터링을 실시하였다. 2014년 1월 항내 자생하는 거머리말은 수심 1.2-3.1 m의 범위에서 출현하였고, 수온은 7.4℃, 염분은 29.1 psu, pH는 8.05를 나타냈다. 거머리말의 서식밀도는 167.1±16.4 shoots m-2로 조사되었고, 총길이 48.5±18.1 cm, 엽초길이 9.1±2.8 cm, 엽폭 4.8±1.1 cm로 조사되었다. 2014년 12월에 이식을 실시한 후 다음해 8월까지 모니터링을 실시하였다. 이식 초기 서식밀도는 감소하여 1월에 8.5 shoots patch-1 값을 나타낸 이후 점차 증가하여 4월에 19.0 shoots patch-1 까지 증가하였다. 총 길이는 73.3±2.9-121.3±6.1 cm, 엽초길이는 9.6±0.6-21.0±1.2 cm, 엽폭은 5.7±0.1-6.8±0.2 mm로 조사되었고 측정값은 7월까지 꾸준히 증가하다 8월 이후에 감소하는 경향을 나타내었다. 천성항 내 거머리말 서식지와 이식 초기 대체서식지에서 관찰되지 않았던 생식지(flowering shoot)가 2015년 3월부터 나타나기 시작하여 모니터링 기간 동안 계속 관찰되었으며, 2016년 조사 시 생식지의 씨앗에서 발아한 거머리말을 대체서식지에서 관찰할 수 있었다.

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