• 한국환경복원기술학회지
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• 제5권5호
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• pp.67-75
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• 2002

This study was carried out to introduce current status to discuss erosion control strategy for the conservation of stream valley ecosystem. To restore stream valley ecosystem, we should establish restoration plans to keep the original shape of stream. It is necessary to use environmentally sound materials with conservation of valley stability. Valley construction for erosion control works should be evaluated continuously based on concepts of conservation and development of stream valley ecology. It is categorized in point of the important of class of stream valley conservation ahead planning and constructure. We suggest that the development of stream valley construction needs to prevent mass movement of soil sediments. In addition, it is established the basal strategy to protect macro and micro aquatic organisms in stream valley ecosystem.

• Journal of Ecology and Environment
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• 제45권4호
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• pp.203-217
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• 2021

Background: Sea turtles, which are globally endangered species, have been stranded and found as bycatch on the Korean shore recently. More studies on sea turtles in Korea are necessary to aid their conservation. To investigate the spatio-temporal occurrence patterns of sea turtles on the Korean shore, we recorded sampling locations and dates, identified species and sexes and measured sizes (maximum curved carapace length; CCL) of collected sea turtles from the year 2014 to 2020. For an analysis of diets through stomach contents, we identified the morphology of the remaining food and extracted DNA, followed by amplification, cloning, and sequencing. Results: A total of 62 stranded or bycaught sea turtle samples were collected from the Korean shores during the study period. There were 36 loggerhead turtles, which were the dominant species, followed by 19 green turtles, three hawksbill turtles, two olive ridley turtles, and two leatherback turtles. The highest numbers were collected in the year 2017 and during summer among the seasons. In terms of locations, most sea turtles were collected from the East Sea, especially from Pohang. Comparing the sizes of collected sea turtles according to species, the average CCL of loggerhead turtles was 79.8 cm, of green turtles was 73.5 cm, and of the relatively large leatherback turtle species was 126.2 cm. In most species, the proportion of females was higher than that of males and juveniles, and was more than 70% across all the species. Food remains were morphologically identified from 19 stomachs, mainly at class level. Seaweeds were abundant in stomachs of green turtles, and Bivalvia was the most detected food item in loggerhead turtles. Based on DNA analysis, food items from a total of 26 stomachs were identified to the species or genus level. The gulfweed, Sargassum thunbergii, and the kelp species, Saccharina japonica, were frequently detected from the stomachs of green turtles and the jellyfish, Cyanea nozakii, the swimming crab, Portunus trituberculatus, and kelps had high frequencies of occurrences in loggerhead turtles. Conclusions: Our findings support those of previous studies suggesting that sea turtles are steadily appearing in the Korean sea. In addition, we verified that fish and seaweed, which inhabit the Korean sea, are frequently detected in the stomach of sea turtles. Accordingly, there is a possibility that sea turtles use the Korean sea as feeding grounds and habitats. These results can serve as basic data for the conservation of globally endangered sea turtles.

• 한국환경생태학회지
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• 제15권3호
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• pp.247-256
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• 2001

본 연구의 목적은 우리 나라의 실정에 맞는 보전지역의 평가기준을 마련하여 적용하는 데 그 목적이 있다. 이를 위하여 현재가지 발표되는 평가기준에 관한 논문과 보고서 등을 바탕으로 평가기준을 마련하고, 우리 나라 상태에서 적용가능한 평가기준을 도출하였다. 도출된 평가기준 중에서 현재 기초자료의 부족으로 보편적 자료로 활용할 수 없는 기준은 제외하고 우리 나라 실정에 맞으며. 기초자료의 수집이 가능한 요소만을 평가기준으로 선정하였다. 보전지역에 대한 평가기준을 설정하기 위하여 국내외 선행연구와 기존문헌을 조사하여 보전가치에 대한 평가항목을 분석한 결과, 총 27개의 항목이 평가기준으로 사용되었으며, 희귀성 21회, 유용성 및 다양성 15회, 면적, 자연성 및 인간의 간섭이 각각 73회, 대표성 72회, 허약성 70회로 나타났다 국내외 평가기준 중에서 정량적으로 다루어 진 평가기준은 총 13개였으며 이 중 희귀성 9회. 인간의 간섭 8회, 면적 5회의 빈도를 보였다. 총 27개의 평가기준 중 우리 나라의 상황에 맞는 평가기준을 선정한 결과. 희귀성, 분류학적 특이성, 인간의 간섭 등 3가지이며 그 외에 유용성 등과 같은 기준은 인접분야에 대한 연구와 조사가 이루어지면 유용하게 사용될 기준이다.

• Ocean and Polar Research
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• 제32권2호
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• pp.137-144
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• 2010

There is a host of habitat assessment systems available to evaluate and grade tidal flat ecosystems in Korea. Nevertheless, we recognize the need to develop a better ecological scheme to improve reliability and accuracy given the importance of using an empirical approach in assigning grades to indicators and the limitation of current systems which evaluate tidal flats on a regional basis. A preferable system would be one that enables habitat mapping within a tidal flat, provides a diagnosis of ecological stress/health, has a high level of ecological relevance, communicability, and statistical robustness, and enables evaluation of diverse habitats within a tidal flat. The following points should be considered in framing such a system. Indicators should discriminate habitat quality into five to seven grades accomodating diverse characteristics and conservation value of a habitat, and the grading should be made from frequency distribution of indicators based on nationwide data.We suggest the following tasks in crafting such a system: i) The decision on selection of indicators should be made based on accuracy of assessment and practical application; ii) effects of physical habitat conditions on variability of indicators should be reflected; and, iii) further works on stress/health indicators should be addressed for adopting a multiple-indicator approach which reduces misdiagnosis.

• 보존과학회지
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• 제34권2호
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• pp.129-135
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• 2018

Scientific investigation of cultural heritage can provide important information to understand the context of the object. To know the characteristics of the material is also an essential part of objects management and conservation. However, the identification and characterization of organic dyes used in archaeological and historical textiles are often limited by the restrictions in sampling. To cope with the difficulties, applications of high-performance techniques of surface analysis, such as Time of Flight-Secondary Ion Mass Spectra (TOF-SIMS) could be considered as a non or micro-destructive option. This study aims to examine the applicability of TOF-SIMS analysis to the detection of organic dyes from historical textiles. A group of silk fabrics dyed with vegetable dyes were artificially photo-aged to different degrees and analyzed with TOF-SIMS. Molecular and fragment ions from indigo were successfully detected from the aged samples; however, only some fragment ions were observed from gardenia and safflower dyed fabrics. Further studies with actual historical samples with extended examination scope would be necessary to assess the validity of this technique.

• 한국환경생태학회지
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• 제7권2호
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• pp.164-171
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• 1994

덕유산 국립공원의 고산지대 (해발 1,350m이상)를 대상으로 삼림식생의 실태와 삼림군집 구조를 정확히 파악하고자, 자연보존지구에 29개의 방형구(20$\times$20m)를 설치하여 식생을 조사하였다. Cluster 분석한 결과 네 개의 집단으로 분류되었다. 수종간의 상관관계는 신갈나무와 들메나무, 들메나무와 노린재나무 및 싸리, 시닥나무와 주목, 함박꽃나무와 작살나무, 주목과 구상나무 등의 수종들 간에는 비교적 높은 정의 상관관계를, 신갈나무와 시닥나무, 주목 및 괴불나무 등의 수종들 간에는 높은 부의 상관관계를 보였다. 본 조사지의 종다양도는 0.9969~l.2217로 비교적 높게 나타났다.

• Ecology and Resilient Infrastructure
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• 제6권1호
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• pp.49-57
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• 2019

본 연구에서는 북한의 생태계와 국토 관리에 대한 문제를 해결할 수 있는 법적 체계를 수립하는데 도움을 주기 위하여, 자연환경과 사회기반시설에 대한 북한의 법령을 종합적으로 분석하였다. 북한의 헌법에서 환경권은 자연환경 보전의 측면이 강조되어 있다. 북한에서는 자연환경과 국토 관리에 대한 법령은 비교적 통합적으로 제정되어 있었다. 자연환경 관리에서 자연보호지역 설정을 중심으로 생태계 보전이 이루어지고 있다. 국토관리에서는 사회기반시설에 대한 우선순위가 강조되고 있다. 북한의 자연환경과 국토 관리에 대한 선진적인 법 체제 구축과 법 집행의 성과를 거두기 위하여 경제적, 기술적 지원이 요청된다.

• Ecology and Resilient Infrastructure
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• 제9권2호
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• pp.124-129
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• 2022

도시하천은 이치수의 기능과 함께 생태적으로 건강한 도시환경을 제공함으로써 시민의 삶에 핵심축이 되어오고 있다. 반면 도시 고밀화에 의한 기반시설 확장 등과 더불어 지역의 하천에 대한 보전과 이용 측면에서 상충이 발생하고 있다. 지속가능한 하천을 위해서는 적절한 합의와 조율이 필요한 실정이다. 본 연구는 주민참여 협치예산을 통한 주민 제안 공론화의 장에서 나타난 다양한 의견을 분석하고자 한다. 은평구의 6개 하천을 대상으로 이용자 인식 조사와 전문가 인터뷰를 실시하였다. 이를 통해 도시생활권 지방하천과 소하천의 안정적이고 지속가능한 보전과 적절하고 균형 있는 이용 방안을 제안하였다.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제3권1호
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• pp.1-6
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• 2022

Among the 13 species of otters in the world, only one Eurasian otter (Lutra lutra) is found in South Korea. In the Korean Peninsula, otter pelts were historically valuable and expensive commodities used for international trade, and otters have long been poached as hunting animals. Recent rapid economic development in South Korea has increased habitat fragmentation and loss, creating a continuing threat to the natural environment. Otters live only in the area of rivers and streams as a family group and are territorial (linear habitat). Due to these limited conditions of otter habitat, the population size of otter is lower than that of onshore mammals. According to recent research, DNA analyses using microsatellite markers have shown that only approximately 7-21 otter individuals inhabit river systems for a length of 50-230 km. Korea's urban streams are associated with many threats that hinder otters from inhabiting them. Many areas around the urban streams are surrounded by high concrete riverbanks, and the risk of roadkill is also high. Nevertheless, ecological restoration projects in the urban rivers will contribute greatly to the stable inhabitation of otters. Detailed otter conservation strategies, such as the elimination of threat factors, improvement of habitat environment, and restoration of food resources and shelter, will provide a positive restoration effect on otter and river ecosystems as well.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제4권2호
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• pp.79-85
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• 2023

The Tibetan Plateau is home to the only alpine crane species, the black-necked crane (Grus nigricollis). Conservation efforts are severely hampered by a lack of knowledge on the spatial distribution and breeding habitats of this species. The ecological niche modeling framework used to predict the spatial distribution of this species, based on the maximum entropy and occurrence record data, allowed us to generate a species-specific spatial distribution map in Ladakh, Trans-Himalaya, India. The model was created by assimilating species occurrence data from 486 geographical sites with 24 topographic and bioclimatic variables. Fourteen variables helped forecast the distribution of black-necked cranes by 96.2%. The area under the curve score for the model training data was high (0.98), indicating the accuracy and predictive performance of the model. Of the total study area, the areas with high and moderate habitat suitability for black-necked cranes were anticipated to be 8,156 km² and 6,759 km², respectively. The area with high habitat suitability within the protected areas was 5,335 km². The spatial distribution predicted using our model showed that the majority of speculated conservation areas bordered the existing protected areas of the Changthang Wildlife Sanctuary. Hence, we believe, that by increasing the current study area, we can account for these gaps in conservation areas, more effectively.