1.Introduction to taxonomy and ecology of the spider mites.
Korean Journal of Medicine 1999;57(4):513-516
No abstract available.
Classification*
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Ecology*
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Spiders*
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Tetranychidae*
2.Leiorreuma exaltatum and Trapelia coarctata, New to Korean Lichen Flora.
Santosh JOSHI ; Udeni JAYALAL ; Laszlo LOKOS ; Jung Shin PARK ; Soon Ok OH ; Young Jin KOH ; Jae Seoun HUR
Mycobiology 2013;41(1):56-58
The present account briefly describes two crustose lichen species new to South Korea. Detailed taxonomic descriptions of Leiorreuma exaltatum and Trapelia coarctata, supported by distribution, ecology and illustrations, are provided. Both species were collected from warm-temperate, humid forests of Jeju Island.
Ecology
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Lichens
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Republic of Korea
3.Discussion on forming pattern of dao-di herbs Ligusticum chuanxiong.
Lin CHEN ; Cheng PENG ; Youping LIU ; Hongping CHEN ; Chubing XIANG
China Journal of Chinese Materia Medica 2011;36(16):2303-2305
As a famous-region Dao-di Herbs, Ligusticum chuanxiong which mainly grows in the west of the upper reaches of Jinma River in Dujiangyan for a long time. In recent years, the history, species and origin of L. chuanxiong were researched by many scholars. However, the forming pattern of Dao-di herbs of L. chuanxiong has not been reported systematically. Basing on the general principles of the formation of Dao-di herbs, it can be concluded that the forming pattern of L. chuanxiong is the type of two determinants, which are combined both unique ecological environment of genuine regions and advanced cultivation techniques.
China
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Ecology
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Ligusticum
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growth & development
4.New Records and an Annotated Key for the Identification of Graphis Adans. in South Korea.
Santosh JOSHI ; Udeni JAYALAL ; Soon Ok OH ; Jung Shin PARK ; Jae Seoun HUR
Mycobiology 2013;41(2):73-76
The following new species for the lichen genus Graphis in Korea are reported: G. chlorotica, G. nanodes and G. tenuirima. A brief description of these species, together with their distribution, ecology, and illustrations are provided. A key to all known species of this genus from Korea is also presented.
Ecology
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Korea
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Lichens
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Republic of Korea
5.The ecology of Huli subsistence agriculture.
Papua and New Guinea medical journal 2002;45(1-2):15-43
A detailed study of the ecology of subsistence agriculture in the Tari Basin was conducted to investigate the stability of intensive agroecosystems in the highlands of Papua New Guinea. The highly intensive agricultural systems that have evolved in the wetland environments in the lowest parts of the basin were found to be extremely stable and capable of further intensification. Both soil fertility and sweet potato yields showed no signs of degradation even though some areas had been under continuous cultivation for hundreds of years. In the dryland environments with volcanic ash soils there was evidence of ecological instability in the form of declining soil fertility and sweet potato yields over time and the progressive replacement of forest vegetation with grasslands having a much lower biomass and nutrient content. Higher altitude dryland environments were the most susceptible to degradation due to lower fertility soils, higher rainfall and higher rates of soil loss by erosion. The Huli people have responded to these differences in ecological stability by concentrating their agricultural activities increasingly on to the more fertile wetland areas. Much of this movement into the lower parts of the basin is thought to have occurred in the period since European contact, over the last 50 years. These findings have implications for much of the Papua New Guinea highlands where volcanic ash soils occur. Although these soils are highly suitable for growing sweet potato and have been able to support large rural populations with their pigs, they are unable to remain productive under continuous cultivation even though the cropping practices of most highland groups are well adjusted to conserving soil fertility and maximizing crop yields. The chemical fertility of volcanic ash soils is being progressively depleted and much greater efforts are needed to promote the restoration of soil fertility during the fallow period. Much greater emphasis is needed on improving fallow practices such as the promotion of woody regrowth and forest regeneration and the growing of leguminous cover crops to protect soils against erosion and to provide a large volume of nutrient-rich plant material suitable for composting.
Fertility
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Soil
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Asymmetric Septal Hypertrophy
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Ecology
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Agriculture
6.Diversity and Ecology of Myxomycetes from Kütahya and Konya (Turkey) with Four New Records.
Mycobiology 2018;46(3):215-223
In this study, we examined myxomycetes that developed in moist chamber cultures of substrata material collected from Kütahya and Konya provinces in Turkey. We collected bark samples from living trees, plant litter from the ground, standing dead wood or stumps, and downed and decayed wood or bark and placed them in the moist chamber cultures. We identified 36 species belonging to 12 genera of myxomycetes. The species determined are listed, and four new records, Didymium balearicum Ing, Macbrideola oblonga Pando & Lado, Paradiacheopsis erythropodia (Ing) Nann–Bremek. and Perichaena pedata (Lister & G. Lister) G. Lister, are added to the mycoflora of Turkey.
Ecology*
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Myxomycetes*
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Plants
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Trees
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Turkey
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Wood
7.New Additions to Lichen Mycota of the Republic of Korea.
Santosh JOSHI ; Sergey Y KONDRATYUK ; Florin CRISAN ; Udeni JAYALAL ; Soon Ok OH ; Jae Seoun HUR
Mycobiology 2013;41(4):177-182
The current study describes seven species that are new to the lichen mycota of South Korea. A taxonomic description of Arthonia excipienda, A. radiata, Arthothelium ruanum, Enterographa leucolyta, Fissurina elaiocarpa, Rinodina oleae, and Thelotrema porinaceum was given and supported by distribution, ecology, and illustrations. Each species was compared with a species showing close resemblance.
Classification
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Ecology
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Lichens*
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Olea
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Republic of Korea*
9.Ecology suitability study of Polygonatum cyrtonema.
Peng-Fei ZHANG ; Hong ZHANG ; Xiao-Bo ZHANG ; Yong-Fei YIN ; Shou-Jin LIU ; Lei LI ; Dai-Yin PENG
China Journal of Chinese Materia Medica 2020;45(13):3073-3078
Using the 260 geographical distribution records of Polygonatum cyrtonema in China, combined with 53 environmental factors, the maximum entropy modeling(MaxEnt) was used to study the ecological factors affecting the suitability distribution of P. cyrtonema. The ArcGIS software was used to predict the potential distribution of the population of P. cyrtonema. The dominant factors were chosen by using the Jackknife test and the Receiver Operating Characteristic(ROC) curve was used to evaluate the simulation. The results showed that high value of area under curve(AUC) denoted good results, which significantly differed from random predictions. Based on the evaluation criterion, the accuracies of the predictions of P. cyrtonema potential distribution in the current periods were excellent. The main environmental factors affecting the suitable growth of P. cyrtonema were the monthly precipitation, the wettest monthly precipitation, the annual average temperature range and the precipitation of November, March, February, April, May and October. There are 9 environmental factors in soil type. The potential fitness of P. cyrtonema in China is high, mainly concentra-ted in Hunan, western Hubei, Guangdong, northeastern Guangxi, southeastern Guizhou, Jiangxi, southwestern Anhui, Fujian, Zhejiang, Shaanxi, southwestern Henan and Chongqing. The growth distribution of the potential distribution area of P. cyrtonema was divided, and the zoning map of the growth suitability of P. cyrtonema was formed. Through the comparative analysis of the potential distribution range based on MaxEnt and the distribution range of literature records, the understanding of the distribution range of P. cyrtonema was expanded.
China
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Ecology
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Entropy
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Polygonatum
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Research Design
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Soil
10.A Statistical Study of Dermatoses During the Last 5 Years (1976~1980).
Dong Sik BANG ; Chung Koo CHO ; Sung Nack LEE
Korean Journal of Dermatology 1983;21(1):37-44
The incidence of skin diseases in the hospital practice cannot give a true picture of their prevalence in the population served. Nevertheless the hospital incidence figures usually offer the only available means of assessing prevalence, and therefore provide us with a potentially valuable source of information on the ecology of many skin disorders. (countinued..)
Ecology
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Incidence
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Prevalence
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Skin
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Skin Diseases*
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Statistics as Topic*