인위적 교란 정도에 따른 토양서식 포식성 중기문 응애류 군집 구조 비교

금은선 ( Eun Sun Keum ),김지원 ( Ji Won Kim ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2011 한국토양동물학회지 Vol.15 No.1

Disturbance by human interference such as tillage could affect soil ecosystem components and functions. This study investigated the structure of gamasid mite community, the predatory group of soil mesofauna, at the species level relative to the disturbance gradient, annual broadleaf plant (milk vetch, Astragalus sinicus), perennial grass, and nut pine forest (Pinus koraiensis). We found lowest abundance of the gamasid mites in milk vetch, which had the most severe disturbances. Highest abundance were found from nut pine stand followed by the grassland. The gamasid mite abundance, species and diversity index was inversely proportional to the degree of disturbances. In nut pine stand, 17 species in 6 family were found. In nut pine stand, 95% of individuals were found from humus layer relative to the soil layer (5%), and 89% of species were found from the humus layer. In annual plant plots, species in Hypoaspis genera were mostly found followed by Lasioseius lasiodactyli. In nut pine stand, Eugamasus fujisanus, Veigaia uenoi, Holaspina commuis were dominant. Since the gamasid mites are the top predator of soil mesofauna, different association of the dominant species would be related to the abundance of prey groups such as collembolan, Oribatida and nematodes. Further study would pursue the relationship between the group of preys and predatory mite interaction.

국내와 세계 중기문 응애 과수준 다양성 비교

금은선 ( Eun Sun Keum ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2013 한국토양동물학회지 Vol.17 No.1

Inventory of biological diversity becomes more important as for natural resourse management as well as for sustainable economic development. In this paper, we compared the biodiversity of mesostigmatid mites in Acari reported from Korea relative to the world. Individual researchers` works were firstly complied by Baek as 29 species in 1983, then later total diversity was reported as 108 species in 1998. Recently National Institute of Biological Resourse compiled 28 families and 191 species in 2012. Based on our recent publications and also scrutinized secondary sources, we found 36 families and 282 species from Korea. With this information, we compared the diversity of Korean Mesostigmata in the family level to the world records. From the comparison, we discussed the taxonomic importance as well as further research area for the diversity study.

보문 : 지중해이리응애의 대량증식을 위한 설탕응애 먹이조건에 관한 연구

금은선 ( Eun Sun Keum ),박웅 ( Ung Park ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2012 한국토양동물학회지 Vol.16 No.1

The dried fruit mite, Carpoglyphus lactis (Acari: Carpoglyphidae) is often found from stored grain and processed foods as well as from bee hive. This is an important prey item of the predatory mites which are potential biological control agents. This study evaluated the dietary combination of sugar, yeast and bran for mass production of Carpoglyphus lactis. From the study on the production efficiency measured by the number of mites produced and the population growth rate, white sugar : brewing yeast : bran or brown sugar : bread yeast : bran combination proved as the better diet mixes. Among those, 4 : 1 : 1 mixture provided the best population growth. Also adding bran to the diet mix acted to ameliorate the physical property of the diet mix and also provide the microhabitats for the dried fruit mites. Further research may provide the optimum mass rearing condition of Carpoglyphus lactis and consequently efficient production of biological control agent such as Amblyseius swirskii.

도시림 내 서식처별 중기문응애류 다양성: 서울숲 사례 연구

금은선 ( Eun Sun Keum ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2014 한국토양동물학회지 Vol.18 No.1

Urban forest park is the place of vegetational remaining in the large human settlement area, playing important roles in ecology and human relaxation as well. Biodiversity is the critical driver of the urban forest functioning in terms of ecosystem service. We studied the diversity of soil dwelling predatory mites (Mesostigmatida, Acari) in the Seoul Forest, one of the newly developed urban forest in the Seoul metropolitan city. Soil mesostigmatans were collected from the surface soil (.10 cm depth) of tree stands of Quercus variabilis, Pinus densiflora, Ginkgo biloba, Hibiscus syriacus each and herbaceous plots of Hosta longipes, or Carex sp. Species richness was highest in the oak tree stand and the abundance was highest in Hibiscus stand. In the herbaceous sites, species richness and abundance were extremely low. Similarities of mesostigmatid mite communities among sites were lower than 0.5 of Sørensen`s or Jaccard`s coefficient. Dominant species were Holaspina communis under Q. variabilis stand, Rhodacarus denticulatus and H. communis under P. densiflora, Neogamasus tikhomirovi under G. biloba. Under H. syriacus, phytoseiid mites including Neoseiulus makuwa were exclusively collected. From the herbaceous sites, Hypoaspis cuneifer and H. vacua were collected from H. longipes site and N. tikhomirovi and H. alstoni were from Carex site. Further study of the ecological roles of different predatory mites to the functioning of the urban forest park could help maintain the ecosystem service provided from the urban forest and its management.

소나무와 일본잎갈나무 임상간 토양 중기문응애 군집 비교

금은선 ( Eun Sun Keum ),김지원 ( Ji Won Kim ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2010 한국토양동물학회지 Vol.14 No.1

Soil gamasid mites are important regulators of the in detritus food web in soil. The study investigated gamasid mite fauna and compared among the different habitats and forest stands. Species richness and abundance were higher in humus layer than in soil layer in P. densiflora and Larix leptolepis stands. Between two forest stands, there was no significant difference of either species richness or abundance. Index such as diversity (H`) and evenness (J`) showed the constraint to be used as a community determinant. Dominant species in L. leptolepis stand was Veigaia uenoi while Paraistus sp. in P. densiflora stand. From the dead pine tree, species in Leioseius were dominant. Different dominant structures need further study for better understanding of the soil food web.

미소서식지에 따른 날개응애류 분포와 다양성 비교

김지원 ( Ji Won Kim ),금은선 ( Eun Sun Keum ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2013 한국토양동물학회지 Vol.17 No.1

Oribatid mite live in various habitats and it is the most diverse arthropod group in forest litter and soil. The study sites are located in Mt. Cheongtae at an altitude of 1,200 m in Gangwon province. We compared the diversity of oribatid mites in 9 microhabitats. Samples of humus and soil were collected for mite extraction. Total of 55 species, 24 families were retrieved from the study sites, except one tracking road inside of Pinus koaiensis forest where no obribatid mite was recovered. Mean species richness were significantly higher in Pinus densiflora and Larix leptolepis forests. Higher abundance were found in grass (LlGr) near by L. leptolepis forest. Similarly, diversity was also higher in P. densiflora and L. leptolepis forests. However, evenness was higher in grass (PdGr) near by P. densiflora and horsetail of L. leptolepis. Similarity index showed high similar in grass (LlGr) and L. leptolepis. Dominant species, diversity and richness of oribatid mites were varied relative to the microhabitats.

교란 정도에 따른 토양 미소절지동물의 구성 및 날개응애류 군집 구조 비교

김지원 ( Ji Won Kim ),금은선 ( Eun Sun Keum ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2011 한국토양동물학회지 Vol.15 No.1

An ecological disturbance is an event that often results in a prolonged disruption of ecosystem structure and function. This study was to relate the disturbance gradient to soil microarthropod compositions and orbatid mite communities. Soil Sample was taken from annual plant of milk vetch (Astragalus sinicus), perennial plant of grassland, and perennial nut pine (Pinus koraiensis). Mean abundance of soil arthropods were not significant different in grassland and nut pine. However, significant difference was found in milk vetch. Collembola was the dominant group (71%), which was followed by gamasid mites (10%) in highly disturbed site of milk vetch. In grassland with mid disturbance, abundance of oribatida, collembola, and gamasida was 66%, 30% and 4% respectively. In nut pine with low disturbance, collembola (34%), oribatid mite (26%) and gamasid mite (17%) was found. Abundance and species richness, diversity index of oribatid mite was very lower in high disturbance site. Oppiella acuminata and Boreozetes donghaksaensis was the dominant species in nut pine. Scheloribates sp. was dominant in grassland and only Ceratozetes mediocris was found in milk vetch. We shows that clear distinction of soil microarthropod abundance and composition as well as the community structure of the most dominant group of soil microarthropod, Oribatida relative to the disturbance gradient. Further study is demanded for the factorial influence on soil faunal behavior and functional aspect of soil faunal system relative to the disturbance and recovery process.

경북 봉화지역의 소나무와 일본잎갈나무림의 날개응애 군집구조 비교

김지원 ( Ji Won Kim ),금은선 ( Eun Sun Keum ),정철의 ( Chul Eui Jung ) 한국토양동물학회 2010 한국토양동물학회지 Vol.14 No.1

Soil microarthropod fauna were compared among litter and soil layers from Pinus densiflora and Larix leptolepis, and rotten pine tree in Bongwha Gyeongbuk, Korea. Abundance and composition of soil microarthropod fauna were significantly different between forests and vertical layers; more microarthrpods from the stand of P. densiflora than from the L. leptolepis, and more from the humus layer than from the soil layer. In oribatid mites (Acari: Oribatida), 22 species in 14 families were found from the P. densiflora stands while 26 species in 16 families were from the L. leptolepis. Abundance and species richness were higher in humus layer than in soil layer. But the Shannon diversity (H`) and evenness (J`) indices was higher in soil of P. densiflora and lower in humus layer of both P. densiflora and L. leptolepis. Similarity and cluster analysis showed that the oribatid mite communities were separated by the vertical layer than the forest stands. Boreozetes donghaksaensis was the most common and dominant species in two forest stands. Epidamaeus sp. and Tectocepheus sp. were dominant in litter layer of L. leptolepis whereas Gustavia microcephala was dominant in humus layer of P. densiflora. From the dead pine tree, Cultroribula lata, Oppia sp1. and O. sp2. are dominant.