• 제목/요약/키워드: Ecology Resources

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Clerodendrum ervatamioides (Lamiaceae): A new record to the flora of Vietnam

  • Heyjoong KIM;Do Van HAI;Tran Duc THIEN;Tran The BACH;Bui Hong QUANG;Duong Thi HOAN;Le Ngoc HAN;Tran Duc BINH;Ritesh Kumar CHOUDHARY;Joongku LEE
    • 식물분류학회지
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    • 제52권4호
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    • pp.255-261
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    • 2022
  • Clerodendrum ervatamioides C. Y. Wu was described in 1977 with its type locality in Yunnan, China. During our floristic investigation in the Muong Nhe Nature Reserve of Vietnam of Dien Bien province and in the Muong Te district of the Lai Chau province, we collected several specimens of Clerodendrum ervatamioides, marking the first record of its occurrence in Vietnam. In this paper, details of the morphological features, distribution, ecology, photo plates, and a table comparing the morphological features with its ally Clerodendrum garrettianum Craib are provided.

Tripterygium wilfordii (Celastraceae): A new generic and species record for the flora of Vietnam

  • HAI, Do Van;QUANG, Bui Hong;BACH, Tran The;BINH, Tran Duc;CHOUDHARY, Ritesh Kumar;LEE, Joongku
    • 식물분류학회지
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    • 제51권3호
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    • pp.319-325
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    • 2021
  • Tripterygium wilfordii Hook.f. (Celastraceae), collected from Phia Oac-Phia Den National Park of Vietnam, is reported here as a new generic and species record for the flora of Vietnam. The genus Tripterygium differs from other genera of Celastraceae by its samara fruits, which become three-winged at maturity, and a scandent shrub. Taxonomic notes, descriptions, line drawing and photographs are provided, together with short notes on the distribution, ecology and phenology of Tripterygium wilfordii Hook.f. (Celastraceae).

Argyreia gyrobracteata Traiperm & Chitchak (Convolvulaceae): A new record to the flora of Vietnam

  • TRAN, Binh Duc;TRAN, Bach The;DO, Van Hai;BUI, Quang Hong;DOAN, Son Hoang;LE, Han Ngoc;NGUYEN, Thuy Thu;EUM, Sangmi
    • 식물분류학회지
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    • 제50권3호
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    • pp.351-355
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    • 2020
  • Argyreia gyrobracteata Traiperm & Chitchak (Convolvulaceae) is newly recorded in Vietnam. It is similar to A. mekongensis Gagnep & Courch in having a white campanulate corolla but differs from that species by having whitish surface of the abaxial leaf, narrowly lanceolate or linear-oblong, curly, rolled up the bract with a longer length of the petiole and a shorter pedicel. It was previously known only in Thailand, but was recently found in Lam Dong Province, Vietnam, for the first time. The present study provides a detailed description, colorful photos and the distribution of the species. Furthermore, a comparison of the diagnostic characters between this species and a related species in Vietnam, A. mekongensis Gagnep & Courch, is provided.

강 하구역 활성화를 위한 자원의 중요도·만족도 분석 - 낙동강 하구역의 사례를 중심으로 - (Importance and Satisfaction Analysis for Vitalization of River Estuary - Focused on the Nakdong Estuary -)

  • 안병철;권진욱
    • 한국조경학회지
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    • 제46권6호
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    • pp.49-59
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    • 2018
  • 본 연구에서는 낙동강 하구 자원들의 중요도와 만족도 분석을 위해 통계분석 SPSS 24.0 Pearson chi-square을 사용하였으며, 연구 결과를 3가지로 요약하였다. 첫째, 낙동강 하구 자원의 중요도 분석에서 생태자원이 27.1%로 가장 높았으며, 경관자원 18.5%, 수변레저자원 6.5%, 복합문화자원 5.4%, 역사문화자원 3.3% 순으로 분석되었다. 설문대상 그룹별 중요도의 유의확률은 성별과 연령별, 조사장소별 조사에 유의한 차이를 나타냈다. 여성은 남성보다 생태자원의 선호가 2배 높았으며, 미술관 등 복합 문화자원에서 3배 이상 높은 것으로 나타난 반면, 수변레저 자원에서는 남성이 2배 높은 값을 보였다. 연령별 분석에서 수변레저 자원 선호는 20~30대에서 타 연령대보다 높은 값을 나타냈으며, 복합문화자원은 30대에서 타 연령대보다 약 3배 이상 높은 값을 보였다. 직업에 따른 선호는 유의한 차이가 없는 것으로 분석되었다(p>.05). 둘째, 만족도 분석에서는 경관 자원의 만족도 평균은 6.01, 생태자원은 5.65이며, 문화자원이 5.15로 분석되었다. 성별에 따른 경관자원과 생태자원, 연령에 따른 경관자원, 지역에 따른 생태자원, 직업에 따른 경관자원과 생태자원의 만족도는 유의한 차이가 있는 것으로 분석되었다. 성별에 따른 경관자원과 생태자원의 만족도는 유의한 차이가 없는 것으로 분석되었으나, 문화자원에서는 유의확률(p=0.012)을 보였다. 연령에 따른 경관자원의 만족도 조사에서 40~50대에서 경관자원의 만족이 높은 반면, 20대에서는 상대적으로 낮게 평가되었다. 부산 경남 거주자와 그 외의 거주자들의 경관자원과 문화자원의 만족도는 유의한 차이가 없는 것으로 나타났으나, 생태자원의 만족도 분석에서는 두 집단의 유의한 차이를 확인할 수 있었다. 직업에 따른 경관자원과 생태자원의 만족도 조사에서 대학생, 공무원, 일반인, 전문가 집단의 만족도는 유의한 차이가 있는 것으로 나타났으나, 문화자원의 만족도는 유의한 차이가 없는 것으로 분석되었다. 셋째, 낙동강 하구 자원의 중요도와 만족도를 분석한 결과, 경관, 생태, 문화 자원이 중요하다고 응답한 각각의 집단의 경관자원 만족도 평균은 각각 6.19, 6.08, 5.67로 분석되었으며, 생태자원의 만족도는 5.95, 5.57, 5.41로 분석되었다. 중요도와의 상관관계는 유의하지 않은 수준으로 분석되었으나, 문화자원에 대한 만족도 상관관계는 유의한 차이(p=0.025)가 있는 것으로 확인되었다. 또한, 하구 자원의 가치 향상과 활성화를 위해 15개 세부 항목을 분석한 결과, 생태관광 활성화(49.5%)와 갈대습지 복원(47.5%)이 우선적이었다. 생태자원의 가치 향상에 대한 인식이 돋보였으며, 하구 주변의 인프라 개선과 자전거길, 산책로, 수변레저 등이 강 하구 활성화의 요건으로 분석되었다.

Cloning, Expression, and Characterization of a Cold-Active and Organic Solvent-Tolerant Lipase from Aeromicrobium sp. SCSIO 25071

  • Su, Hongfei;Mai, Zhimao;Yang, Jian;Xiao, Yunzhu;Tian, Xinpeng;Zhang, Si
    • Journal of Microbiology and Biotechnology
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    • 제26권6호
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    • pp.1067-1076
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    • 2016
  • The gene encoding lipase (Lip98) from Aeromicrobium sp. SCSIO 25071 was cloned and functionally expressed in Escherichia coli. Lip98 amino acid sequence shares the highest (49%) identity to Rhodococcus jostii RHA1 lipase and contains a novel motif (GHSEG), which is different from other clusters in the lipase superfamily. The recombinant lipase was purified to homogeneity with Ni-NTA affinity chromatography. Lip98 showed an apparent molecular mass of 30 kDa on SDS gel. The optimal temperature and pH value for enzymatic activity were recorded at 30℃ and 7.5, respectively. Lip98 exhibited high activity at low temperatures with 35% maximum activity at 0℃ and good stability at temperatures below 35℃. Its calculated activation energy was 4.12 kcal/mol at the low temperature range of 15-30℃. Its activity was slightly affected by some metal ions such as K+, Ca2+, and Na+. The activity of Lip98 was increased by various organic solvents such as DMSO, ethanol, acetone, and hexane with the concentration of 30% (v/v) and retained more than 30% residual activity in neat organic solvent. The unique characteristics of Lip98 imply that it is a promising candidate for industrial application as a nonaqueous biocatalyst and food additive.

가계의 지속가능한 자연자원 소비에 대한 국내 생활과학 연구 (2000-2013) 고찰 (Human Ecology Research (2000-2013) on Sustainable Consumption of Natural Resources)

  • 추호정;나종연;백은수;김효정
    • Human Ecology Research
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    • 제53권1호
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    • pp.93-106
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    • 2015
  • The purpose of this study is to understand what we have learnt thus far on the sustainable consumption of natural resources by household in Korea. We propose a two-wing model designating households as the main agent of sustainable living where both the production of human resources and the consumption of natural resources take place. In the current study, we focused on the sustainability of natural resource consumption. Undertaking an empirical study, we selected 10 major journals that represent each area of human ecological research and then, identified 120 relevant studies regarding sustainability published since 2000. First, we classified 381 keywords into three categories: production, consumption, and social environment, and the identified studies were then classified in one of the seven categories created by combinations of the abovementioned three categories: production (P), consumption (C), social environment (S), production-consumption (PC), production-social environment (PS), consumption-social environment (CS), and production-consumption-social environment (PCS). The results showed that the sustainability of natural resources has been mainly investigated in the fields of clothing & textiles and food & nutrition. Further, consumer science research has been conducted in the area of consumption-social environment and consumption-production. The current study indicates that the field of human ecology has created and accumulated knowledge to support sustainable living. In the future, we need to conduct more integrated research across disciplines and methods and promote research interest in the underdeveloped area of sustainability research in human ecology.

Observations of the Mating Behavior and Larvae Habitat of Polyphylla laticollis manchurica in the Republic of Korea (Coleoptera: Scarabaeidae: Melolonthinae)

  • Jaeha Lee;Sang-Bong Son;Sang Woo Jung;Yoon-Ho Kim
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • 제4권3호
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    • pp.131-133
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    • 2023
  • Polyphylla laticollis manchurica Semenov, 1900, is a critically endangered species in the Republic of Korea and is strictly protected as a Class I endangered species. Although this beetle species faces a threat of extinction, its ecological understanding is limited. Previous studies conducted on this species in the Republic of Korea have focused only on its taxonomy and mitochondrial genome sequences. Herein, we report an observation of the mating of adults of P. l. manchurica in June 2021, during an ongoing study on Korean beetles. This incidence was reported around light sources from newly constructed townhouses near Geumgang River. Larval habitats were observed along the river between April 2022 and March 2023. Particularly, two larvae were found inside the plant debris, and three were found under the roots of reeds. This study provides key information on the mating ecology of P. l. manchurica that can assist conservation efforts of this critically endangered species.