• Ocean and Polar Research
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• 제35권1호
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• pp.63-68
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• 2013

The European Common Barnacle Balanus perforatus Brugiere (Crustacea, Cirripedia) has been introduced into the east coast of Korea, presumably via the ballast water of ships. The species has since been spreading along both the northern and southern coast to the east, most likely due to alongshore currents. We predicted the potential range expansion of Balanus perforatus in Korean waters using Genetic Algorithm for Rule-set Prediction (GARP), an environmental niche modeling technique. The results show that much of the southern coastal waters of Korea could be colonized by the spread of the nonindigenous species, but that the west coast is unlikely to be invaded. More sampling on the west coast would enhance the predictability of the model. To our knowledge, this is the first report of its kind for predicting marine nonindigenous species in Korean waters using GARP modeling.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제2권2호
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• pp.76-81
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• 2021

With continuous decline of Philippine forest cover, sustainable forest management and restoration are essential to restore destroyed forest ecosystems. Unfortunately, of ten most planted trees in reforestation projects in the Philippines, eight are exotic species, with large leaf mahogany (Swietenia macrophylla) being the most dominant. In this study, effect of Swietenia macrophylla in reforestation projects on native tree species was evaluated. Effects of S. macrophylla leaf litter, frequency, and canopy closure on the growth of the Philippine native species Pterocarpus indicus were investigated. Results showed that S. macrophylla leaf litter significantly inhibited the growth of P. indicus seedlings based on root collar-to-shoot height. The standardized growth rate of seedlings in plots without S. macrophylla leaf litter was significantly higher than the growth rate of seedlings in plots with leaf litter. Furthermore, there was no significant difference in the standardized growth rate of seedlings between plots without leaf litter and a control plot. On the contrary, S. macrophylla tree frequency and canopy closure showed no significant effect. These results attest to the negative effect of widely planted S. macrophylla to a valuable Philippine native tree P. indicus. With accumulating scientific evidence about negative effects of S. macrophylla on native trees, discontinued use in tree planting and reforestation efforts with active management of restoration sites previously planted with large leaf mahogany are needed.

• 한국잡초학회지
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• 제31권1호
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• pp.24-33
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• 2011

북아메리카 원산의 나래가막사리(Verbesina alternifolia)는 국화과의 다년생 식물로, 우리나라에는 1980년대 이후에 들어온 것으로 알려져 있다. 나래가막사리는 전국의 산지 5개 지역, 도로 12개 지역, 하천변 5개 지역에서 분포가 조사되었고, 치악산국립공원, 무등산도립공원 등 생태계 중요지역에도 집중 분포하였다. 나래가막사리는 도로 및 계곡을 따라 산지 및 하천변으로 확산되며, 생명력이 강해 음지, 양지 모두에서 잘 자라는 것으로 나타났다. 군락을 형성한 곳에서는 서서히 분포역을 넓혀 주변 토착식생의 정착을 간섭하며 산지 및 하천변으로 확산되고 있다. 나래가막사리는 특히 자연식생 보전이 필요한 지역에서 분포를 제한할 수 있는 관리가 필요하며, 지하부의 유묘발달로 지상부 관리보다 뿌리제거를 통한 작업이 이루어질 수 있도록 제거방법을 보완할 필요가 있다.