• 한국습지학회지
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• 제25권3호
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• pp.184-195
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• 2023

한국에서 생태계교란 식물인 단풍잎돼지풀의 효과적인 관리방안을 마련하고자, 초식자인 돼지풀잎벌레의 기주특이성, 연간 이동거리를 조사하여 생물학적 방제 수단으로의 활용 가능성과 이 곤충의 섭식이 단풍잎돼지풀의 활력에 미치는 영향을 연구하였다. 이를 위해서 돼지풀잎벌레의 기주선호도를 조사하였고, 돼지풀잎벌레가 확인된 지점을 기준으로 거리가 10m, 20m, 30m, 100m 떨어진 지점에 돼지풀잎벌레가 없는 단풍잎돼지풀군락을 선정하여 돼지풀잎벌레의 출현 여부 파악을 통해 이들의 이동 거리를 확인하였다. 그리고 돼지풀잎벌레의 섭식에 따른 단풍잎돼지풀의 생육, 번식 그리고 생리반응을 측정하였다. 그 결과 돼지풀잎벌레는 국화과의 3분류군만을 섭식하였고, 숙주로부터 반경 30m/yr 이내로 단거리 이동하였다. 초식자의 섭식은 단풍잎돼지풀의 생육, 번식 그리고 생리반응에 부정적인 영향을 주었고, 초식자가 있는 곳으로부터 거리가 멀어질수록 생육 및 번식이 양호하였다. 또한, 단풍잎돼지풀의 식피율이 50% 이하일 때 초식자를 도입하면 90% 이상의 단풍잎돼지풀을 제어할 수 있었지만, 식피율이 90% 이상에서는 제거의 효과가 감소했다. 결과적으로 돼지풀잎벌레는 단풍잎돼지풀의 생태학적 제어자로서 활용 가능성이 있고, 제어의 효과를 높이기 위해서는 단풍잎돼지풀의 식피율이 낮은 봄(5월)에 이 곤충을 도입하는 것이 유리하다.

• The Korean Journal of Ecology
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• 제8권1호
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• pp.39-48
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• 1985

The airborne pollens were investigated by Durhan's pollen trap in Mt. Kwanak from March 1, 1984 to February 28, 1985. The observed airborn pollens were identified 22 families and 49 genera, which were divided into 27 tree pollens. Most airborne pollens were found from late-March to late-September and a few from early-November to late-February, 1985. The first observed pollen of the year was Alnus on March 5 and the last was Artemisia on Decomber 19, 1984. The maximum amount of daily airborne pollens was 823 grains/cm2 on May 16. Peak day and the maximum amount of major airborne pollens were as follows; 166 grains/cm2/day of Alnus pollen on April 4, 38 gr. of Populus on April. 13, 22 gr. of Quercus on May 10, 791 gr. of Pinus on May 26, 139 gr. on May 26 and 104 gr. of Graminae on September 6, 24 gr. of Ambrosia on Sep. 10 and 236 gr. on May 26 and 104 gr. of Graminae on September 6, 24 gr. of Ambrosia airborne pollen for one year was 12,733 grains/cm2 which were composed of 61% tree pollens and 39% herb ones. Decreasing order of pollen counts was Pinus, Alnus, Quercus and Populus in trees, and Graiminae, Artemisia and Ambrosia in herbs. Most of the airborn pollens were deposited in the day-time and a few at night, the maximum at 2∼4p.m.and the mininum at 8∼10 p.m.

• Animal cells and systems
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• 제12권2호
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• pp.101-108
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• 2008

Recently, Platypus koryoensis has been reported as a major pest of oak trees in Korea which can introduce the pathogenic fungus(Raffaelea sp.) by making galleries into the heartwood of the tree. As the beetle has developed its effective drilling mouthpart enough to make tunnels, we have analyzed the fine structural aspects of the mouthpart using the field emission scanning electron microscopy(FESEM) to reveal its mechano-dynamic characteristics. The mouthparts of this ambrosia beetle which consist of a labrum, a pair of mandibles, a pair of maxillae and the labium exhibit typical morphology of mycophagous coleopteran beetles and have those characteristics of chewing mouthparts that can excavate galleries in the hardwood. Both of maxillary and labial palpi have the functions of direct the food to the mouth and hold it while the mandibles chew the food. The distal ends of these palpi are flattened and have shovel-like setae. Females have larger maxillary palpi and a larger gular region than males in general.

• Journal of Ecology and Environment
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• 제44권4호
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• pp.256-263
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• 2020

Background: Ambrosia trifida is a highly invasive annual plant, but effective control methods have not been proposed. Among various eradication methods, cutting is a simple measure to control invasive plants, and sowing seeds of native plants may effectively increase biotic resistance to invasion. In this study, we conducted a field experiment with two treatments: cutting and sowing seeds of six native or naturalized plants. Results: We found a significantly lower A. trifida abundance after cutting than in the control (77% decrease). Sowing seeds of native species did not provide any additional benefit for the control of A. trifida, but increased the importance values and diversity of other native vegetation. The abundance of A. trifida was negatively correlated with that of other plant taxa based on plant cover, biomass, and density. However, biotic resistance of sown plants was not effective to control invasion because A. trifida was so competitive. Conclusions: We concluded that cutting is an effective measure to control Ambrosia trifida while sowing seeds of native plants can increase native plant diversity.

• 한국환경과학회지
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• 제30권2호
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• pp.173-184
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• 2021

Ecological disturbance plants distributed throughout the country are causing a lot of damage to us directly or indirectly in terms of ecology, economy and health. These plants are not easy to manage and remove because they have a strong fertility, and it is very difficult to express them quantitatively. In this study, drone hyperspectral sensor data and Field spectroradiometer were acquired around the experimental area. In order to secure the quality accuracy of the drone hyperspectral image, GPS survey was performed, and a location accuracy of about 17cm was secured. Spectroscopic libraries were constructed for 7 kinds of plants in the experimental area using a Field spectroradiometer, and drone hyperspectral sensors were acquired in August and October, respectively. Spectral data for each plant were calculated from the acquired hyperspectral data, and spectral angles of 0.08 to 0.36 were derived. In most cases, good values of less than 0.5 were obtained, and Ambrosia trifida and Lactuca scariola, which are common in the experimental area, were extracted. As a result, it was found that about 29.6% of Ambrosia trifida and 31.5% of Lactuca scariola spread in October than in August. In the future, it is expected that better results can be obtained for the detection of ecosystem distribution plants if standardized indicators are calculated by constructing a precise spectral angle standard library based on more data.

• The Korean Journal of Ecology
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• 제22권1호
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• pp.51-58
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• 1999

자생식물과 귀화식물을 대상으로 allelochemicals를 분석하고 그 항균효과를 조사하였다. 자생식물과 귀화식물 추출액 간의 가용성 고형물 함량에는 차이를 보이지 않았고 자생식물인 까마중의 가용성 고형물 함량이 90 mg/ml로 가장 높게 나타났다. 자생식물의 에탄을 추출액에 의한 Aspergillus phoenicis KCTC 1228의 항균력은 까마중에서만 나타났으며 clear zone이 18 mm였고 포자형성은 억제되었다. 귀화식물 중 돼지풀과 망초에서 포자형성이 억제되면서 clear zone이 24 mm와 22 mm로 형성되었고 미국자리공과 원추천인국은 포자가 형성되면서 clear zone이 22 mm와 19 mm로 나타났다. 자생식물인 까마중과 귀화식물인 미국자리공과 돼지풀에서 토양미생물인 Bacillus sphiaericus 2362와 Bacillus sphiaericus 2291, Bacillus thuringiensis var. subtilis와 Bacillus thuringiensis var. cereus에서 항균력이 나타났는데 돼지풀이 각 균주에서 항균활성이 가장 크게 나타났다. 특히 Bacillus thuringiensis var. subtilis에서 clear zone이 32 mm로 활성이 강하게 조사되었다. 일반적으로 추출액내의 가용성 고형물 함량이 높을수록 항균 활성이 크게 나타남을 알 수 있다. 자생식물인 까마중과 귀화식물인 미국자리공과 돼지풀의 추출액을 HPLC로 성분분석한 결과 까마중은 hydroquinone외 3종이, 미국자리공은 cinnamic acid외 5종이, 돼지풀은 benzoic acid외 7종이 분석되었다. Phenolic compound 각각에 대한 Aspergillus phoenicis KCTC 1228에 대한 항균력은 coumaric acid와 benzoic acid에서 조사되었다.

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2018년도 정기학술대회 발표논문집
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• pp.187-187
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• 2018

• Mycobiology
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• 제41권4호
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• pp.245-247
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• 2013

The ambrosia beetle, Platypus koryoensis, is an economically important pest affecting oak trees in Korea. Candida kashinagacola was isolated from galleries of the beetle in oak wood and identified by analyses of morphology, physiological properties, and nucleotide sequence of the large subunit ribosomal DNA. This is the first report on Candida species associated with oak wilt disease vectored by the ambrosia beetle, Platypus koryoensis, in Korea.

• Animal cells and systems
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• 제2권2호
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• pp.209-216
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• 1998

The invasion of Ambrosia artemisiifolia in the Ukrainian Carpathians Mts. and the Transcarpathian Plain in Central Europe was reconstructed on the basis of floristic records. The first spontaneous occurrence was dated from the beginning of the 1940s. Within the next 55 year period, the distributional spread speed of the species was of 67.6 $km^2/y$ (by the average data). The occupied area by A. artemisiifolia in the range of the studied areas is about $3716.5km^2$ now. The features of behavior of the invader and the habitat preference were determined. The frequency of occurrence by sociologic-ecological classification was carried out. The generalized model of correlations among the gravitation, the active temperature sum and the disturbance gradients and the frequency of occurrence of the species was presented. The scheme of the invasion stages of A. artemisiifolia is reflected in the population status changes of the species during the areal dynamics.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1998년도 한국생물과학협회 학술발표대회
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• pp.212.2-212
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• 1998

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