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Effects of an Artificial Habitat Creation of Menyanthes trifoliata L. Using Planting Module

식재모듈을 활용한 조름나물(Menyanthes trifoliata L.) 인공서식지 조성의 효과

  • Heo, Jinok (Department of Biology Education, Seoul National University) ;
  • Kim, Heung-Tae (Department of Biology Education, Seoul National University) ;
  • Kim, Cheol Min (Korea Urban Forestation Co., Ltd.) ;
  • Bae, Yeon Jae (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Kim, Jae Geun (Department of Biology Education, Seoul National University)
  • Received : 2014.11.04
  • Accepted : 2015.01.10
  • Published : 2015.02.28

Abstract

Habitat creation for endangered species Menyanthes trifoliata L. using planting module represents a habitat type such as the rhizome grows horizontally to open water at the margin of the lake. The objectives of this mesocosm experiment are habitat creation with easy construction and low management effort, and to investigate the potential of providing a habitat for aquatic macroinvertebrates. Planting modules had three different substrates of bed soil, perlite and K-SOIL (artificial lightweight soil using bottom ash). These modules were established in two different size of the tub($1170{\times}2250{\times}300mm^3$, $900{\times}1360{\times}190mm^3$). According to the monitoring results, number of leaves and coverage of M. trifoliata showed significant difference with substrate and tub size. The number of leaves showed similar growth responses in bed soil (mean 22.979) and K-SOIL (mean 28.042) substrates but growth was poor in perlite substrate (mean 1.667). The number of leaves in the large tub was more than small tub (p=0.015). Similar responses were obtained with the coverage, the length of rhizome and the number of rhizome in M. trifoliata. A total of 21 taxa of aquatic macroinvertebrates including 1,145 individuals was found in the mesocosm. The Shannon diversity index and colonization index in the mesocosm were similar to the previous studies. These results suggest that the experimental mesocosm could provide sufficient habitats for aquatic macroinvertebrates. If planting modules use bed soil or K-SOIL by planting substrate, establish that taking into account open water surfaces for M. trifoliata growth and manage about 30cm of water depth control, then habitat creation for M. trifoilata will be successful.

멸종위기종인 조름나물의 인공서식지 조성을 위해 식재 모듈을 이용하여 호수의 가장자리에서 개방수면으로 생장하는 조름나물의 서식 유형을 재현하였다. 간편하게 설치할 수 있고, 관리를 최소화할 수 있는 형태의 서식지를 조성할 목적으로 메조코즘 실험을 수행하고 3년간 모니터링 하였다. 또한 조름나물 식재 모듈이 사용된 메조코즘이 수서 대형무척추동물에게 서식지로서의 기능을 발휘할 수 있는지를 확인하였다. 식재 모듈은 상토와 펄라이트, K-SOIL(바텀애쉬를 활용한 인공경량토양)로 기질 조건을 달리하였고, 이 모듈은 크기가 다른 2종류의 습지박스($1170{\times}2250{\times}300mm^3$, $900{\times}1360{\times}190mm^3$)에 설치되었다. 모니터링 결과 조름나물은 잎의 수와 피도에 있어서 기질 조건과 습지박스 크기에 의해 통계적으로 유의한 차이를 보였다. 잎의 수는 상토(평균 23개)와 K-SOIL(평균 28개) 조건에서는 유사한 생육상태를 보였지만, 펄라이트(평균 2개)에서는 생육이 불량하였다. 또한 큰 습지박스의 조름나물이 작은 습지박스의 조름나물에 비해 더 많은 잎을 가졌다(p=0.015). 피도와 지하경의 길이, 지하경의 수에 있어서도 유사한 경향을 나타내었다. 1,145개체를 포함한 수서 대형무척추동물 21개 분류군이 조름나물 메조코즘 내에 서식하는 것을 확인하였으며, 다양도 지수 및 정착 지수 값 또한 주변 인공습지를 대상으로 한 결과와 유사하였다. 이러한 결과들은 조름나물 메조코즘은 수서 대형무척추동물에게 충분히 서식지를 제공할 수 있음을 의미한다. 식재 기질로 상토와 K-SOIL을 사용하고, 조름나물이 생장할 수 있는 개방수면이 확보되도록 모듈을 설치하며, 수심이 약 30cm가 되도록 관리한다면 식재모듈을 이용한 조름나물 서식지 조성은 성공적일 것이다.

Keywords

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