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Effects of habitat substrates and companion plants on the growth of Menyanthes trifoliata

서식 기질과 동반종이 조름나물의 생장에 미치는 영향

  • Received : 2011.10.05
  • Accepted : 2011.12.02
  • Published : 2011.12.31

Abstract

Bog bean (Menyanthes trifoliata L.) is an endangered species in Korea, inhabiting in montane wetlands. Its' habitats are decreasing due to artificial disturbances and climate change in Korea. Interspecies competitions determine the distribution of a species and it is important to examine the effects of companion species on the growth of a species. To reveal the effects of habitat substrate and companion species on the growth of bog bean, we compared the growth parameters of bog bean at three substrate conditions where plant communities were formed: water column, Sphagnum mat, and paddy soil. Bog bean had the highest relative coverage at Sphagnum mat condition and there are few species whose height were higher than it. In contrast, there were many species larger than bog bean at paddy soil condition. The maximum coverage of bog bean was the largest at water column condition, and the lowest at paddy soil condition. Our results indicate that the growth of bog bean was more restricted by interspecific competition at paddy soil condition than at Sphagnum mat condition. Those results suggest that bog bean avoid competitions by expansion of rhizome rather than elongation of its height. For conservation or creation of bog bean habitats, it is necessary to offer the environment where other species cannot survive well.

Keywords

bog bean;conservation;endangered species;habitat substrate;interspecific competitions

Acknowledgement

Grant : 습지생태계조성 및 자연생태 회복기술 개발

Supported by : 환경부

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