• Title/Summary/Keyword: tropical forests

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Study on the Change of Significance in Female Tattoos (여성 Tattoo의 의미변화 연구)

  • Bang, Soo-Ran
    • Journal of the Korea Fashion and Costume Design Association
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    • v.10 no.2
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    • pp.39-56
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    • 2008
  • It is a remarkable phenomenon that tattoos has been rapidly spreading among women of modern years. The extremism of feminine ornaments, and pricking and piercing of the skin seem to have deep connection with women's consciousness changing to being independent, active and aggressive. The objective of this study is to analyze the potential quality of today's women, who appears emblematically through tattoo, and to search out the whole aspect and keynote of female tattoos. The methods of research are by examining the general characteristics including concept and history, considering the type and significance of ethnic female tattoos, and then comparing with the symbolism of today's female tattoos. The sphere is limited to women's tattoos from ancient times to today's modern lift, examined from large portions of Africa, Asia, Australasia, the Americas, and Arctic regions. As a result, the following had been reflected in female tattoos in the past. First, incantation, tribe, adult age, adornment, marital status, domestic ability and sex distinction, where among others, the incantatory, ornamental symbol, and domestic sign were representatives. Second, the most popular body parts for having a tattoo were around the lips, hands and abdominal region. Third, the more harsh the environment becomes such as tropical forests, isolated islands, and polar regions, the more number of females have tatoos. Fourth, women's tattoos were much less glamorous and smaller compared to those of men, distinguishing one's sex. On the other hand, today's female tattoos can be classified as five symbols: masculinity, independence, voluptuousness, affection, and purity. These symbols contain women's mentality to pass the limit, and to overcome social inferiority. In modern society, where women must compete with met it has become necessary for women to educe their potential masculine qualities. Being violent accessories for them, tattoos became a mark of such potential. Therefore, in the future, women's interest and demand for tattoos are expected to rise in proportion to the social demand of women's force.

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Cultivation and Nutritional Value of Prominent Pleurotus spp.: An Overview

  • Raman, Jegadeesh;Jang, Kab-Yeul;Oh, Youn-Lee;Oh, Minji;Im, Ji-Hoon;Lakshmanan, Hariprasath;Sabaratnam, Vikineswary
    • Mycobiology
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    • v.49 no.1
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    • pp.1-14
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    • 2021
  • Pleurotus species are commercially essential mushrooms and widely cultivated throughout the world. The production of Pleurotus mushrooms alone accounts for around 25% of that total cultivated mushrooms globally. In America and Europe, Pleurotus species are considered specialty mushrooms, whereas, in Korea, their cultivation is economically profitable, and it is one of the highly consumed species. Pleurotus species are predominantly found in tropical forests and often grow on fallen branches, dead and decaying tree stumps, and wet logs. Biographical studies have shown that the Pleurotus genus is among the more conspicuous fungi that induce wood decay in terrestrial ecosystems worldwide due to its formidable lignin-modifying enzymes, including laccase and versatile peroxidases. Pleurotus species can be grown easily due to their fast colonization nature on diversified agro-substrates and their biological efficiency 100%. Pleurotus mushrooms are rich in proteins, dietary fiber, essential amino acids, carbohydrates, water-soluble vitamins, and minerals. These mushrooms are abundant in functional bioactive molecules, though to influence health. Pleurotus mushrooms are finding unique applications as flavoring, aroma, and excellent preservation quality. Apart from its unique applications, Pleurotus mushrooms have a unique status delicacy with high nutritional and medicinal values. The present review provides an insight into the cultivation of Pleurotus spp. using different agro-waste as growth substances paying attention to their effects on the growth and chemical composition.

Limitations of Applying Land-Change Models for REDD Reference Level Setting: A Case Study of Xishuangbanna, Yunnan, China (REDD 기준선 설정 시 토지이용변화 예측모형 적용의 한계: 중국 운남성 시솽반나 열대림 사례를 중심으로)

  • Kim, Oh Seok
    • Journal of the Korean Geographical Society
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    • v.50 no.3
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    • pp.277-287
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    • 2015
  • This paper addresses limitations of land-change modeling application in the context of REDD (Reducing Emissions from Deforestation and forest Degradation). REDD is an international conservation policy that aims to protect forests via carbon credit generation and trading. In REDD, carbon credits are generated only if there is measurable quantied carbon sequestration activities that are additional to business-as-usual (BAU). A "reference level" is defined as simulated baseline carbon emissions for the future under a BAU scenario, and predictive land-change modeling plays an important role in constructing reference levels. It is tested in this research how predictive accuracies of two land-change models, namely Geographic Emission Benchmark (GEB) and GEOMOD, vary with respect to different spatial scales: Xishuangbanna prefecture and Yunnan province. The accuracies are measured by Figure of Merit. In this Chinese case study, it turns out that GEB's better performance is mainly due to quantity (e.g., how many hectares of forest will be converted to agricultural land?) rather than spatial allocation (e.g., where will the conversion happen?). As both quantity and allocation are crucial in REDD reference level setting it appears to be fundamental to systematically analyze accuracies of quantity and allocation independently in pursuit of accurate reference levels.

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Effect of Elevated $CO_2$ Concentration and Temperature on the Growth Response of Several Woody Plants, Including Two Endangered Species ($CO_2$ 농도와 온도증가가 목본성 수종 3종과 멸종위기 2종의 생육반응에 미치는 영향)

  • Jang, Rae-Ha;Kim, Hae-Ran;You, Young-Han
    • Korean Journal of Ecology and Environment
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    • v.46 no.2
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    • pp.234-240
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    • 2013
  • Increasing global $CO_2$ concentration and temperature is leading to the phenomenon of global warming and impacting the growth of plants. In order to determine the effects of global warming on the woody plants of Korea, five woody species, Pinus densiflora (Korea's dominant species), Ginkgo biloba (a commonly used street tree), Quercus glauca (dominant species in sub-tropical forests), Quercus gilva and Abeliophylum distichum (both endangered species), were grown at control (ambient $CO_2$+ambient temperature) and treatment (elevated $CO_2$+elevated temperature) conditions in a glasshouse, and were monitored for their ecological response. Shoot lengths and number of leaves were measured once a month from April to October in 2010, and were again measured in November 2011. Shoot lengths of P. densiflora, G. biloba and Q. glauca were not significantly affected by elevated $CO_2$ and temperature conditions. However. those of Q. gilva and A. distichum were both higher for plants grown under treatment than for those grown under control. The number of leaves of five woody species was not significantly affected by elevated $CO_2$ and temperature. These results indicate that P. densiflora, G. biloba and Q. glauca react more favorably than Q. gilva and A. distichum (each of which are designated as endangered plants) under global warming situations.

International Case Study and Strategy Proposal for IUCN Red List of Ecosystem(RLE) Assessment in South Korea (국내 IUCN Red List of Ecosystem(생태계 적색목록) 평가를 위한 국제 사례 연구와 전략 제시)

  • Sang-Hak Han;Sung-Ryong Kang
    • Journal of Wetlands Research
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    • v.25 no.4
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    • pp.408-416
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    • 2023
  • The IUCN Red List of Ecosystems serves as a global standard for assessing and identifying ecosystems at high risk of biodiversity loss, providing scientific evidence necessary for effective ecosystem management and conservation policy formulation. The IUCN Red List of Ecosystems has been designated as a key indicator (A.1) for Goal A of the Kunming-Montreal Global Biodiversity Framework. The assessment of the Red List of Ecosystems discerns signs of ecosystem collapse through specific criteria: reduction in distribution (Criterion A), restricted distribution (Criterion B), environmental degradation (Criterion C), changes in biological interaction (Criterion D), and quantitative estimation of the risk of ecosystem collapse (Criterion E). Since 2014, the IUCN Red List of Ecosystems has been evaluated in over 110 countries, with more than 80% of the assessments conducted in terrestrial and inland water ecosystems, among which tropical and subtropical forests are distributed ecosystems under threat. The assessment criteria are concentrated on spatial signs (Criteria A and B), accounting for 68.8%. There are three main considerations for applying the Red List of Ecosystems assessment domestically: First, it is necessary to compile applicable terrestrial ecosystem types within the country. Second, it must be determined whether the spatial sign assessment among the Red List of Ecosystems categories can be applied to the various small-scale ecosystems found domestically. Lastly, the collection of usable time series data (50 years) for assessment must be considered. Based on these considerations, applying the IUCN Red List of Ecosystems assessment domestically would enable an accurate understanding of the current state of the country's unique ecosystem types, contributing to global efforts in ecosystem conservation and restoration.

Anti-oxidative and Anti-cancer Activities of Methanol Extract of Machaerium cuspidatum (Machaerium cuspidatum 메탄올 추출물의 항산화 및 항암활성에 관한 연구)

  • Jin, Soojung;Oh, You Na;Park, Hyun-jin;Kwon, Hyun Ju;Kim, Byung Woo
    • Microbiology and Biotechnology Letters
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    • v.44 no.4
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    • pp.432-441
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    • 2016
  • Machaerium cuspidatum, a canopy liana, is a species of genus legume in the Fabaceae family and contributes to the total species richness in the tropical rain forests. In the present study, we investigated the antioxidative and anti-cancer effects of M. cuspidatum and its mode of action. The methanol extract of M. cuspidatum (MEMC) exhibited anti-oxidative activity with an $IC_{50}$ value of $1.66{\mu}g/ml$, and this was attributable to its 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity. MEMC also exhibited a cytotoxic effect and induced morphological changes in a dose-dependent manner in several cancer cell lines including human lung adenocarcinoma A549 cells, human hepatocellular carcinoma HepG2 cells, and human colon carcinoma HT29 cells. Moreover, MEMC treatment induced the accumulation of subG1 population, which is indicative of apoptosis in A549 and HepG2 cells. MEMC-induced apoptosis was confirmed by the increase in Annexin V-positive apoptotic cells and apoptotic bodies using Annexin-V staining and DAPI staining, respectively. Further investigation showed that MEMC-induced apoptosis was associated with the increase in p53 and Bax expression, and the decrease in Bcl-2 expression. In addition, MEMC treatment led to proteolytic activation of caspase-3, 8, and 9 and degradation of poly-ADP ribose polymerase (PARP). Taken together, these results suggest that MEMC may exert a beneficial anti-cancer effect by inducing apoptosis via both the extrinsic and intrinsic pathways in A549 and HepG2 cells.

Distribution and Vegetation Structure of Genus Cymbidium (Orchidaceae) in Jeju Island (제주도 내 난과(Orchidaceae) 보춘화속(Cymbidium)식물의 분포 및 자생지의 식생 구조)

  • Hyun, Hwa-Ja;Kim, Hae-Ran;Choi, Hyung Soon;Kim, Chan-Soo
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.16 no.1
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    • pp.1-10
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    • 2014
  • This study was carried out to investigate the range of distribution and vegetation structure of habitats of genus Cymbidium which is distributed in Jeju Island, Korea. This genus is distributed in tropical and subtropical Asia and North Australia. In Korea, there are six species [i. e. C. goeringii (Rchb. f.) Rchb. f., C. kanran Makino, C. lancifolium Blume var. aspdistrifolium (Fukuy.) S. S. Ying., C. macrorhizum Lindl., C. nagifolium Masam. and C. ensifolium L.], which were also distributed in Jeju Island. The habitats of this genus ranged between 16 meter and 574 meter above sea level in Jeju Island. C. macrorhizum had the broadest altitudinal range (16-574 meter above sea level), whereas C. ensifolium, C. nagifolium and C. lancifolium var. aspidistrifolium had the narrow altitudinal range. According to the classification analysis by TWINSPAN, the plant communities were divided into five groups of Castanopsis sieboldii community, Castanopsis sieboldii-Pinus thunbergii community, Pinus thunbergii-Quercus acutissima community, Pinus thunbergii community and Quercus glauca- Aphananthe aspera community. Three species, C. kanran, C. nagifolium, and C. ensifolium inhabited Castanopsis sieboldii community and C. lancifolium var. aspdistrifolium inhabited Castanopsis sieboldii-Pinus thunbergii community. C. macrorhizum inhabited Pinus thunbergii community, Pinus thunbergii-Quercus acutissima community and Quercus glauca-Aphananthe aspera community. C. goeringii inhabitated Castanopsis sieboldii-Pinus thunbergii community and Pinus thunbergii-Quercus acutissima community. The populations of the genus Cymbidium have been extremely decreased due to illegal collection in Jeju Island. Especially, the distribution range of C. kanran, C. nagifolium, and C. ensifolium was narrow and limited to evergreen broad-leaved forests, therefore, conservation plans are needed for the protection of these species.