• 한국환경복원기술학회지
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• 제20권1호
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• pp.1-12
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• 2017

This study has been carried out for the purpose of predicting the potential habitat sites of invasive alien plants in the DMZ and providing the basic data for decision-making in managing the future DMZ natural environment. From 2007 to 2015, this study collected the data for the advent of Ambrosia trifida var. trifida through fieldwork around the DMZ area, and simulated the potential distribution area of Ambrosia trifida var. trifida using Maxent model among the models of species distributions. As a result, it showed that the potential distribution area of the Ambrosia trifida var. trifida was concentrated in the western DMZ with relatively low altitude and scanty in the central east regions with relatively high elevation and forest cover rate. Because the invasive alien vegetation is a significant threatening factor in the agriculture and restoration of ecology and it costs a lot to restore the area already invaded by invasive alien vegetation, advance precautions are necessary to prevent biological invasions. It is expected that it is possible to predict the disturbed ecosystems through this study for the efficient land use within DMZ in the future and to apply this study in setting up the areas for the development and conservation within the DMZ.

• Ecology and Resilient Infrastructure
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• 제3권3호
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• pp.189-200
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• 2016

종분포 모델은 어떤 지역에서 침입외래종이 어떻게 확장되고 어떤 환경 요인이 이들의 분포에 영향을 미치는지를 이해하는데 매우 유용한 도구이다. 본 연구에서는 한반도에서 두 침입외래종인 돼지풀 (Ambrosia artemisiifolia)과 물참새피 (Paspalum distichum)의 분포에 대하여 연구하였다. 이 두 종의 현재의 분포지에서 기후환경 요인을 분석하고 이 두 종의 분포를 예측하기 위하여 Maxent (the maximum entropy) 모델을 이용하였다. 이 두 종의 출현 자료는 Global Biodiversity Information Facility와 우리나라의 식물종 데이터베이스에서, 생물기후 자료는 WorldClim 자료로부터 얻었다. 모델을 수행한 결과, 자생지 위치자료를 이용한 예측 결과보다 전지구 위치자료를 이용한 예측이 연구 대상종의 잠재적 분포지를 잘 설명하였다. 이들 종의 분포에 기여한 기후환경 요인으로서 돼지풀에서는 최건월의 강수량과 연평균온도가, 물참새피에서는 연평균온도와 최한사분기의 평균온도가 선정되었다. Maxent 종분포 모델은 외래종의 침입을 예측하고 이들의 확산을 관리하는데 유용한 도구가 될 것으로 생각된다.

• 생태와환경
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• 제52권4호
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• pp.340-347
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• 2019

The red swamp crayfish (Procambarus clarkia) originated from the North America distribute widely as invasive species throughout the world including Europe, Asia, Africa, North America and South America. The red swamp crayfish is also an invasive species in South Korea. We aimed to characterize the occurrence and distribution pattern of the red swamp crayfish, and evaluate the potential distribution of this species in South Korea. In South Korea, the red swamp crayfish was firstly reported in Seoul in 1996, and recently its occurrence is frequently reported at streams or reservoirs at different regions, showing the expansion of its distribution area. The red swamp crayfish has high potential to occur in the nationwide scale in South Korea because of their biological adaptation, effects of climate change, changes of their habitat condition, and various types of human activities. Finally, our results revealed the necessary to conduct an extensive field survey, to keep up a monitoring program for the occurrence of alien species, and to implement a strategy to prevent the dispersal of alien species in the natural ecosystems.

• Journal of Ecology and Environment
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• 제46권1호
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• pp.41-53
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• 2022

Background: Due to the rapidly changing climatic conditions, South Korea faces the grand challenge of exotic species. With the increasing human movement, the influx of alien species to novel regions is prevalent across the globe. The latest research suggests that it is easy to prevent the introduction and establishment of alien species rather than controlling their spread and eradication. Like other countries, the Korean Ministry of Environment released a list (in 2018) of 45 potential risky exotic fish species considered likely to be invasive candidate fish species if they ever succeed in entering the Korean aquatic ecosystems. Results: The investigation into the invasion suitability traits showed that potential risky fish species could utilize those features in becoming invasive once they arrive in the Korean aquatic ecosystems. If the novel species establish viable populations, they are likely to incur higher economic costs, damage the native aquatic fauna and flora, and jeopardize the already perilled species. Furthermore, they can damage the installed infrastructure, decline overall abundance and biodiversity, and disturb the ecosystem services. Here we reviewed the list of fish species concerning their family, native origin, preferred aquatic biomes, main food items, current status in Korea, and potential threats to humans and the ecosystems. Data shows that most species are either already designated as invasive in the neighboring counties, including Japan, Vietnam, Thailand, and China, or originate from these countries. Such species have a higher climate match with the Korean territories. Conclusions: Therefore, it is exceptionally essential to study their most critical features and take regulatory measures to restrict their entry. The incoming fish species must be screened before letting them in the country in the future. The regulatory authorities must highlight the threatening traits of such species and strictly monitor their entrance. Detailed research is required to explore the other species, especially targeting the neighboring countries fish biodiversity, having demonstrated invasive features and matching the Korean climate.

• Journal of Ecology and Environment
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• 제46권3호
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• pp.202-203
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• 2022

• 한국응용곤충학회지
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• 제57권4호
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• pp.323-328
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• 2018

외래침입종이 자생종에 미치는 잠재적인 영향에 관하여 세계적인 관심이 증가하고 있음에도 그러한 침입의 결과들은 여전히 부족한 실정이다. 유럽좁쌀바구미(cabbage seedpod weevil, CSPW, Ceutorhynchus obstrictus)는 1990년대 초에 한반도에 침입하였다. 침입 후 20여 년 동안 관찰과 2010년 이후 중점적인 조사를 통해 유채 꽃에서 침입종인 유럽좁쌀바구미가 가장 우점을 이루고 있으며, 제주도와 울릉도를 포함한 남한 전역으로 확산되어 있다. 그의 확산은 자생종인 유채좁쌀바구미(rapseed weevil, RSW, C. albosuturalis)의 냉이 등 십자화과 잡초로 서식처 후퇴가 맞물려 일어나고 있다. 한편, 한반도와 제주도 사이에 위치한 여서도는 현재 그들의 비율이 약 1:1로 나타나고 있어 이 섬에는 유럽좁쌀바구미가 최근에 유입된 것으로 보인다. 자생종의 생태적 지위(ecological niche)가 외래침입종으로 대체되는 근본적인 기작은 확실하게 알 수 없지만, 자원경쟁(exploitative competition)의 잠재적인 역할을 배제할 수는 없을 것이다. 자연생태계 내에서 외래침입종이 자생종을 신속하게 대체하고 있음을 확인한 이 결과는 앞으로 또 다른 외래종의 침입 방지 노력을 요구하고 있다.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제5권2호
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• pp.50-54
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• 2024

On August 21, 2023, the National Institute of Ecology reported the sighting of an invasive slug resembling Limax maximus Linnaeus, 1758. near Bambat Tree Frog Park, Suwon-si, Korea. This slug is known for its aggressiveness. Specimens were collected around the park and from nearby farms. Through barcoding analysis and sequence comparison, it was identified as L. maximus, confirming its presence in Republic of Korea, alongside two previously identified Limax species, Limax flavus Linnaeus, 1758 and Lehmannia marginatus O. F. Müller, 1774. This study represents the first documented report of L. maximus in the country.

• 한국환경복원기술학회지
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• 제23권3호
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• pp.1-22
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• 2020

This study was conducted as a basic data for preparing future management alternatives by analyzing the status and characteristics of invasive alien plants by land-use type based on the formation of a new town in Goyang Siksa district. As a result, the invasive alien plants in the Goyang Siksa district were 20 families 46 genera 57 taxa; according to the land-use type, the residential area(Wi City apartment complex) is 7 families 10 genera 12 taxa, the public facilities area(Dongguk University campus) is 17 families 40 genera 47 taxa, the mixed forest is 5 families 10 genera 10 taxa, the rice paddy is 5 families 6 genera 7 taxa, river(Mt. Gyeondal creek) is 7 families 13 genera 15 taxa were appeared. The life-form of invasive alien plants in Goyang Siksa district is annuals, the origin is America, the introduction time is third period(1962~the present), and the diffusion grade is wide spread(5 grade) species. It was higher than other types. The naturalization index by location was 31.9% in river(Mt. Gyeondal creek), 21.2% in rice paddy, 16.7% in mixed forest, 15.5% in public facilities area(Dongguk University campus), and 8.5% in residential area(Wi City apartment complex). As a result of comparing the naturalization index by regions with the previous studies, it is judged that there are differences due to the environment such as urbanization progress, size, area, population inflow and location conditions. Although many new towns have been established to date, there is a lack of research on flora (including invasive alien plants) as a basic data for preparing management alternatives. Therefore, Through this study, basic data on the management of exotic plants by land use unit in urban areas can be provided.

• Journal of Ecology and Environment
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• 제45권1호
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• pp.24-39
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• 2021

Background: To address the lack of evidence supporting invasion by three invasive plant species (Imperata cylindrica, Lantana camara, and Chromolaena odorata) in tropical ecosystems, we compared the ecophysiological and leaf anatomical traits of these three invasive alien species with those of species native to Sempu Island, Indonesia. Data on four plant traits were obtained from the TRY Plant Trait Database, and leaf anatomical traits were measured using transverse leaf sections. Results: Two ecophysiological traits including specific leaf area (SLA) and seed dry weight showed significant association with plant invasion in the Sempu Island Nature Reserve. Invasive species showed higher SLA and lower seed dry weight than non-invasive species. Moreover, invasive species showed superior leaf anatomical traits including sclerenchymatous tissue thickness, vascular bundle area, chlorophyll content, and bundle sheath area. Principal component analysis (PCA) showed that leaf anatomical traits strongly influenced with cumulative variances (100% in grass and 88.92% in shrubs), where I. cylindrica and C. odorata outperformed non-invasive species in these traits. Conclusions: These data suggest that the traits studied are important for plant invasiveness since ecophysiological traits influence of light capture, plant growth, and reproduction while leaf anatomical traits affect herbivory, photosynthetic assimilate transport, and photosynthetic activity.

• 한국환경복원기술학회지
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• 제19권3호
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• pp.93-102
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• 2016

An invasive disturbance species has caused harm to biodiversity and ecosystem. To address the issue, identifying the characteristics of a habitat for invasive disturbance species is considered for forest management. This study analyzed a status of plant species by field survey based on belt transect method in the capital areas and established a predictive model for invasive disturbance species by logistic regression. As results of the study, the number of herb, vine, and invasive disturbance species and a canopy cover of tree would decrease from the forest edge to core areas (p<0.001). The predictive model was derived with variables of altitude, Topographic Wetness Index, distance to forest edge, and canopy cover of tree. It can be useful in estimating the presence or absence of species and predicting its spatial distribution. Further studies are needed to identify the pathway of introduction, spread, and possibility of germination for understanding the status of invasive disturbance species in more depth.