• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.205-206
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• 2001

녹조류 중 갈파래(Ulva sp.)는 유럽에서도 오래전부터 식용으로 이용되어 다양한 식품학적 및 생리 기능성에 관한 연구가 진행되어 오고 있다. 갈파래의 주요 특성의 하나는 육상 식물과 달리 황산기를 함유한 다당을 다량 함유하고 있으며, 이 산성 다당은 항종양성, 항 virus성, 면역활성증간 항혈액 응고작용 등이 보고되어 있으며, 국내에서도 홑파래에서 추출한 당단백질이 Sarcoma-180 cell에 대한 항암효과 및 면역활성이 있다고 보고된 바 있다(이 등, 1992). (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.213-214
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• 2001

일반적으로 척추동물 및 무척추동물들은 세균 및 기생충 등과 같은 외부물질의 침입으로부터 자신을 방어하기 위해 항균성 펩타이드를 생산하는 비특이적 면역체계를 가지고 있다고 알려져 있다. 최근까지 비특이적 면역기능을 수행하는 많은 항균성 펩타이드들이 포유류, 양서류 곤충, 및 식물 로부터 분리 정제되었고 구조 활성간의 연구가 활발히 진행되고 있으며 이러한 구조와 활성간의 연구는 거의 육상생물로부터 유래한 항균성 펩타이드에 한정되었고 해양생물, 특히 어류를 이용한 연구는 매우 미흡한 실정이다. (중략)

• Korean Journal of Plant Resources
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• v.35 no.1
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• pp.134-167
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• 2022

This study conducted monitoring of flora and vegetation in order to utilize basic data for forest wetland conservation targeting outstanding forest wetlands located in the eastern part of Jeonnam Province. The survey was carried out for a total of 54 times from May 2020 to October 2020, 1-2 times each for each season. The vascular plants of outstanding forest wetland in eastern Jeollanam-do were 93 families, 251 genera, 336 species, 5 subspecies, 47 varieties, 7 forma, and a total of 395 taxa. This was about 8.5% of 4,641 species of vascular plants in Korea Peninsula. A total of 8 taxa and 12 taxa were identified Korea endemic plants and rare plants respectively. A total of 68 taxa and 19 taxa of floristic target plants and invasive alien plants were classified each. the naturalized Index was 4.83% and the urbanized Index was 5.90%. As a result of the analysis by wetland type of the forest wetlands, obligate upland plants were the highest in the forest wetlands in the eastern Jeonnam province (61.4%), with unclassified wetland plants 19.1%, facultative wetland plants 8.2%, and obligate wetland plants 4.6%, facultative upland plants 4.5%, and facultative plants 2.3% were confirmed in the order.

• Korean Journal of Plant Taxonomy
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• v.43 no.3
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• pp.161-164
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• 2013

Neottia japonica (Blume) Szlach. (Orchidaceae), previously known to be native in southern part of Japan and Taiwan, was found in Seogwipo-si, Jeju-do, Korea. This species is distinguished from the related taxa of Neottia pinetorum (Lindle.) Szlach and N. nipponica (Makino) Szlach. by smaller plant, lip with T-shaped lamella and auricles embracing column, and flowering in the spring. The local name was given as "A-gi-ssangnip-nan-cho" based on the cuter and smaller plant than N. pinetorum. The description and illustrations of the species on morphological characters, voucher specimens, and photograph at the habitat are provided.

• Korean Journal of Ecology and Environment
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• v.36 no.4 s.105
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• pp.391-402
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• 2003

Last 20 years have witnessed many studies dealing with effects of elevated $CO_2$ on terrestrial ecosystems. However, fewer efforts have been made to elucidate effects on wetland ecosystems, although they play a key role in global biogeochemical cycles. This review synthesizes published data to reveal effects of elevated $CO_2$ on wetland plants. In particular, we focused on the changes in primary production, community structures, evapotranspiration, and nutrients in plants. Many studies have reported increases in primary production in individual plants, but we could not conclude that this will lead to increases in carbon sequestration in wetland ecosystems. The reasons include transport of photosynthates into belowground parts, speciesspecific responses, interaction among different species, and limitation of other nutrients. However, elevated $CO_2$ increased transpiration rates in many wetland plants, suggesting substantial influences on water budgets of wetlands. In addition, similar to terrestrial ecosystems, elevated $CO_2$ increased C/N ratio of many plants, which may impede organic matter decomposition in the long term. However, further information on dynamics of belowground carbon supplied from wetland plants is warranted to assess effects of elevated $CO_2$ on wetland carbon cycle accurately.

• Journal of Wetlands Research
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• v.16 no.4
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• pp.443-452
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• 2014

Feces contain nutrients such as nitrogen and phosphate, potassium and research of the impact on the environment from feces is very diverse. However, despite the importance of mammals to environment, studies of mammals into the terrestrial ecosystems are rare. Korean water deer (Hydropotes inermis) is an endemic species of Korea and China, and we conducted on factor of plant growth in relation to feces of Korean water deer depending on land use patterns. The analysis of growth, biomass and C/N ratio of Zea mays, amount of feces and land use patterns are strongly affecting the C/N ratio and growth of the Zea mays. The quantity of the feces also influences the growth of plants instead of the land use patterns. Furthermore, the feces of Korean water deer have a lower C/N ratio than that of other animals' feces. Being the process of composting, it is able to serve a suitable fertilizer for a crop growth. In this study, we investigated the impact of feces into the environment in the terrestrial ecosystems and we were able to provide the basic data to the resources of an efficient scheme of animal feces. Further research is needed to quantify the materials amongst the plant, soil and animal, and to understand the relationship ecosystem.

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2003.07a
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• pp.75-75
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• 2003

방향족 화합물인 폴리염화비페닐(PCB)은 비페닐 기본골격의 10개소의 탄소에 1개에서부터 10개까지의 염소가 치환되어 있는 물질로써 그 독성과 잔류성으로 인해 중대한 환경오염물질의 하나로 주목받고 있다. 폴리염화비페닐에 의한 환경오염은 수질오염으로 이어지며, 식물연쇄에 의해 어류의 경우 그 농축계수가 10만 정도까지 이른다고 한다. 이러한 현상은 육상에서도 일어나며 생물농축과 식물연쇄에 의해 결국 식품을 오염시키게 된다. 이와 같은 난분해성 오염물질의 정화에는 미생물이 가지고 있는 분해능력이 큰 역할을 담당한다는 것이 알려져 있다. 1970년대 토양으로부터 비페닐을 분해ㆍ이용할 수 있는 비페닐 자화성균이 단리된 이후, 호기적으로 폴리염화비페닐을 분해하는 균을 중심으로 연구가 행해져 왔으며 방향족 화합물에 있어서의 대사 경로 등이 밝혀지게 되었다. 본 연구에서는 폴리염화비페닐을 분해하는 능력을 가지는 분해균을 모델로 하여 다양한 환경하에서 폴리염화비페닐을 분해ㆍ대사 할 수 있는 미생물의 분리를 시도하였다. 그 결과 클로로비페닐 분해능을 가진 Gram 양성균을 단리하는데 성공하였고, 이 균이 Bacillus속의 미생물인 것을 확인하였다.

• Korean Journal of Environment and Ecology
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• v.21 no.4
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• pp.318-335
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• 2007

Floral study and present vegetation survey were conducted at a representative reclaimed wetland located behind the Rural Research Institute at Ansan, Gyeonggi-do. The importance values were calculated from the ground cover and frequency of recorded species within quadrats and detrended canonical correspondence analysis was conducted using environment variables, such as total nitrogen, electric conductivity, available phosphate, nitrate nitrogen and the distance from the inner roads. And basal areas for the trees encroaching on the reclaimed wetland were estimated to take a look at the on-going situation about the succession routes on land. As a result, 46 families and 158 species of plants were recorded and Pragmites communis was found to be a dominant species as the present vegetation. The ordination analysis results showed that species distribution was purposely explained by total nitrogen in soil and its content in nitrate nitrogen. The invasion of Robinia pseudoacacia and Pinus rigida whose basal areas were $22.3m^2$ and $1.6m^2$ respectively, into the interior areas of the reclaimed wetland was found to cause a disturbance making some parts of the wetland into land. The zoning program using water level control and migratory roads is becoming a contributing factor in destroying a wetland, so it's suggested that some adjustments should be needed to take care of it.

• Ocean and Polar Research
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• v.38 no.3
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• pp.185-193
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• 2016

In this study, antioxidative potentials of the crude extract and its four solvent fractions from the Arctic terrestrial plant Ranunculus heperporeus were evaluated by using four different activity tests, including the inhibition of intracellular reactive oxygen species (ROS) and lipid peroxidation in Raw 264.7 cells as well as determining the extent of both the scavenging of peroxynitrite ($ONOO^-$) and the oxidative damage of genomic DNA purified from Raw 264.7 cells. Based on a comparative analysis, n-BuOH, and 85% aq.MeOH solvent fractions showed good scavenging effects on the production of intracellcular ROS and inhibited membrane lipid peroxidation and DNA oxidation. In addition, n-BuOH and 85% aq.MeOH fractions exhibited good scavenging effects on both authentic peroxynitrite and one generated from SIN-1. Among the samples tested, the n-BuOH fraction revealed the strongest antioxidant effect.

• Journal of Environmental Science International
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• v.18 no.1
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• pp.113-127
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• 2009

This study was designed to present a river model with an aim at restoring the ecosystem and improving the landscape along the urban rivers on the basin of the Namhan river, a core life channel for the National Capital region. The revelation of botanical status, transition trend and correlation of plants might lead to providing the urban river restoration projects and ecological river formation projects with basic data for a model of ideal aquatic ecology and landscape. The outcomes of this study could be summed up as follows: 1. Communities of Juglans mandshurica, Cornus controversa and Fraxinus mandshurica constitute the main portion of flora at or around uppermost branch streams of the River Namhanis harbored mainly in and around small brooks 2. Typical terrestrial forest communities formed around the River Namhan are composed mainly of Larix leptolepis, Pinus rigida, planned forestation of Pinus koraiensis, Quercus acutissima, Quercus variabilis and Pinus densiflora. 3. The analysis into terrestrial environment of plant communities showed a high content of $P_2O_5$, typical communities found in the artificially disturbed land Finally, it seems also desirable to continue to make every exertion to explore the relationship between fluvial and terrestrial ecologies with a purport of building up a model of natural streams in urban area based on the surveyed factors for plant life, forest communities, soil and landscape and, moreover, on the forecasting for overall influences derived from the relation upon the ecosystem.