• 한국환경복원기술학회지
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• 제24권6호
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• pp.1-13
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• 2021

This study was performed to investigate the ecosystem service patterns in relation to climate change acceleration utilizing big data analysis. This study aimed to use big data analysis as one of the network of views to identify convergent thinking in two fields: climate change and ecosystem service. The keywords were analysed to ascertain if there were any differences in the perceiving problems, policy direction, climate change implications, and regional differences. In addition, we examined the research keywords of each continent, the centre of ecosystem service research, and the topics to be referred to in domestic research. The results of the analysis are as follows: First, the keyword centrality of climate change is similar to the detailed indicators of The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) regulations, content, and non-material ecosystem services. Second, the cross-analysis of terms in two journals showed a difference in value-oriented point; the Ecosystem Service Journal identified green infrastructure as having economic value, whereas the Climate Change Journal perceives water, forest, carbon, and biodiversity as management topics. The Climate Change Journal, but not the former, focuses on future predictions. Third, the analysis of the research topics according to continents showed that water and soil are closely related to the economy, and thus, play an important role in policy formulation. This disparity is due to differences in each continent's environmental characteristics, as well as economic and policy issues. This fact can be used to refer to the direction of research on ecosystem services in Korea. Consistent with the recent trend of expanding research regarding the impacts of climate change, it is necessary to study strategies to scientifically predict and respond to the negative effects of climate change.

• 한국수산과학회지
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• 제40권1호
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• pp.24-30
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• 2007

We developed an ecosystem indicator (EI) for the coastal and offshore areas of Korean waters. One of the major scientific challenges of this undertaking was to translate broad policy statements for ecosystem-based fisheries management (EBFM) into practical terms. Fish reproduction potential (FRP) was defined as an EI to describe the reproductive probability of adult fisheries resources in Korean waters. The FRP was estimated as the ratio of adult fish composition to total catch, catches (in metric tons) by species and by ecosystem, and fishery effort (in horse power per metric ton). The FRP indices of the East/japan Sea Ecosystem (EJSE), Yellow Sea Ecosystem (YSE), and East China Sea Ecosystem (ECSE) began to decrease after the mid-1980s, and the current indices have decreased further, at 0.63 (EJSE), 1.22 (YSE), and 0.68 (ECSE) index points compared to the indices of 1975, when similar catch amounts were recorded. Lower FRPs in the Korean marine ecosystems were the result of higher proportion of immature fisheries resources in the total catch. Because this kind of ecosystem-level indicator is thought to reflect scientific approaches to EBFM and to provide an important tool for assessing the current status of marine ecosystems with respect to both quantity and quality, more EIs should be developed for Korean waters.

• Ocean and Polar Research
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• 제43권1호
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• pp.45-51
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• 2021

Studies on marine zooplankton diversity and ecology are important for understanding marine ecosystem, as well as environmental conservation and fisheries management. DNA metabarcoding is known as a useful tool to reveal and understand diversity among animals, but a comparative evaluation with classical microscopy is still required in order to properly use it for marine zooplankton research. This study compared crustacean mesozooplankton taxa revealed by morphological analysis and metabarcoding of the cytochrome oxidase I (COI). A total of 17 crustacean species were identified by morphological analysis, and 18 species by metabarcoding. Copepods made up the highest proportion of taxa, accounting for more than 50% of the total number of species delineated by both methods. Cladocerans were not found by morphological analysis, whereas amphipods and mysids were not detected by metabarcoding. Unlike morphological analysis, metabarcoding was able to identify decapods down to the species level. There were some discrepancies in copepod species, which could be due to a lack of genetic database, or biases during DNA extraction, amplification, pooling and bioinformatics. Morphological analysis will be useful for ecological studies as it can classify and quantify the life history stages of marine zooplankton that metabarcoding cannot detect. Metabarcoding can be a powerful tool for determining marine zooplankton diversity, if its methods or database are further supplemented.

• 한국경영정보학회:학술대회논문집
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• 한국경영정보학회 2008년도 춘계학술대회
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• pp.171-176
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• 2008

As business environment becomes dynamic, complicated, and networked, viability is important not only for the firm itself but also for its partners. It is needed a broader view to understand and to improve competitiveness of an organization, which is defined as the business ecosystem view. In this research Korean financial market is to be defined as a business ecosystem. The Korean financial market consists of Bank of Korea as the keystone, a number of major financial institutions as flagship entities, and other members in the ecosystem. Since dynamic interactions among members of the ecosystem are done through IT, the financial ecosystem's competitiveness is based on IT competence. In this paper, it is suggested a new view of business ecosystem on the Korean financial market structure and the role of IT to enhance the healthiness of financial ecosystem.

• 한국정보시스템학회지:정보시스템연구
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• 제33권2호
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• pp.143-168
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• 2024

Purpose This study highlights the crucial role of external APIs in driving dynamic evolution within a digital ecosystem. Drawing on the concept of evolutionary network biology perspective, this study hypothesizes that APIs' (non)network properties can significantly impact a digital ecosystem's product variety. Design/methodology/approach This study analyzes plug-in source code data from WordPress.org between January 2004 and December 2014, using survival analysis to test this hypothesis. Findings The empirical results demonstrate that external APIs have a more significant impact on promoting ecosystem evolution over time than those offered by a focal platform system. This research enhances our understanding of ecosystem dynamics and emphasizes the critical role of the generative nature of APIs in fostering ecosystem growth.

• 환경영향평가
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• 제27권4호
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• pp.367-377
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• 2018

인간이 생태계로부터 취하는 비물질적인 혜택인 문화서비스에 대한 수요가 최근 국민총소득과 함께 증가하고 있다. 이에 대한 정량적 가치평가를 위해 국내외에서 다수의 연구가 이루어져 왔으나 개인의 사회, 문화적 이질성 등의 주관적 성향과 규모의 차이로 인해 국내 전 지역에 적용하기에는 어려움이 있다. 문화서비스가 발생하기 위해서는 자연생태계와 인간의 접촉이 이루어져야 하며 이러한 관점을 바탕으로 본 연구에서는 접근성이라는 개념을 활용하여 기존 문화서비스 가치평가방법이 가지는 사회, 문화적 주관성을 보완하고자 한다. 국내 전 지역 규모에 적용 가능하며 다양한 이해관계자의 공감대를 형성시킬 수 있는 포괄적인 문화서비스 평가 방법을 제시하는 것이 본 연구의 목적이다. 본 연구에서는 접근성을 근거로 개발된 유럽의 여가 서비스 평가방법 고찰을 통해 국내에 구축된 도로 네트워크와 인구분포현황과 함께 국립생태원에서 수행한 '생태자산 간이평가' 결과를 활용하여 '문화서비스 접근성 평가 (CSOS)'를 남양주시에 시범 적용하였다. 그 결과 남양주시에 산재한 특정 생태자산 및 주거지를 중심으로 우수한 문화서비스 접근성이 존재하는 특정 공간을 도출할 수 있었다. 또한 이를 바탕으로 오늘날 보편적으로 이용되고 있는 SNS 데이터를 활용한 InVEST의 Recreation 평가 모형과 조망점을 활용한 Scenic quality평가 모형간의 차별성과 시범연구로서 가지는 가중치 설정에 대한 한계점을 고찰하였다.

• 기술혁신학회지
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• 제17권4호
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• pp.786-819
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• 2014

연구개발(R&D)은 개방형 혁신의 원천으로서 그 중요성이 강조되면서 정부에서는 공공 R&D 성과의 확산과 기술사업화를 위한 정책 및 투자 지원을 강화하고 있다. 지난 10여 년간의 지속적인 노력에도 불구하고, 기술사업화는 시장과 분절된 R&D, 취약한 수요기반, 미성숙한 기술시장 등으로 생태계가 아직 제대로 조성되지 못하면서 기대만큼의 성과를 내지 못하고 있다. 이에 본 연구에서는 생태계 조성을 기반으로 기술사업화가 활성화될 수 있도록 기술사업화의 비즈니스 생태계 모형을 제시하고자 하였다. 국내외 선행연구 분석을 토대로 모형 개발을 위한 프레임워크를 설정하였고, 생태계 관점에서 국내 공공 R&D 사업화 추진의 문제점을 도출하였다. 이를 기반으로 기술사업화 생태계 조성을 위한 참조 모형으로서, R&D, 시장, 정보 유통, 고객 등 4 가지 도메인으로 구성된 공공 R&D 사업화의 비즈니스 생태계 모형을 제시하였다. 생태계 모형을 통해 기술사업화는 연구기관을 비롯해 기술거래, 가치평가, 기술금융 등 생태계를 이루는 다양한 구성원들 간의 긴밀한 연계와 유기적 협력을 바탕으로 이루어지며 가치 창출도 가능함을 살펴보았다. 한편 기술사업화 생태계의 성패는 키스톤으로서 공공연구기관의 역할에 좌우되는 만큼, 본 연구에서는 기술사업화 생태계의 지속적인 발전을 위한 공공연구기관의 역할 방향도 제시하였다.

• Ocean and Polar Research
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• 제29권4호
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• pp.327-337
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• 2007

Plankton communities have close relationships with environmental changes in water columns. Thus, the use of plankton as a biological tool for assessing the marine ecosystem health may be effective. Major issue regarding coastal pollution has been usually recognized as phytoplankton blooms or red tides caused by the eutrophication, an increase in concentration of inorganic nutrients such as nitrogen and phosphorus. However, in order to understand the effects of the overall pollution on marine ecosystem, the organic pollutants as well as the inorganic nutrients should be also considered. For understanding the effects of the organic pollution, among the planktonic organisms, heterotrophic bacteria, heterotrophic flagellates and ciliates should be investigated. Generally, there are three approaches for assessing the marine ecosystem health using the plankton taxa or plankton communities. The first one is a community-based approach such as diversity index and chlorophyll a concentration which are common in analysis of the plankton communities. The second is an indiviual-based approach which is to monitor the pollution indicative species. This approach needs one's ability to identify the plankton to species level. The last approach is a bioassay of toxicity, which can be applied to the plankton. A pilot study in Masan Bay was conducted to assess the effects of the inorganic and organic pollution. In this article, a new approach using plankton communities was tentatively presented as a biological tool for assessing the ecosystem health of Masan Bay.

• 한국제4기학회지
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• 제17권2호
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• pp.1-7
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• 2003

Environmental changes caused by the abrupt climatic change are one of the important issues in the scientific community. In the East Sea, abrupt climatic shift, called Younger Dryas, is identified. The age of the Younger Dryas cold episode occurred at 11.2 ka. Overall, changes in circulation and bottom water conditions occurred during the Younger Dryas cold episode in the study area. Especially, climatic transition from meltwater spike to the Younger Dryas cold episode is characterized by significant shifts of oxygen isotope values, the coiling ratios of Neogloboquadrina pachyderma, and the planktonic foraminifers abundances. The impact of abrupt climate change on the ecosystem is very significant. In the East Sea, the calcium carbonate secreting organism(foraminifers) is replaced by silicon dioxide secreting organisms(diatom, radiolarian) after the abrupt and severe cold climatic event. Based on the Doctrine of Uniformitarianism, at least climate change for the next 100 years would be severely influence on the marine ecosystem.

• 환경영향평가
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• 제21권6호
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• pp.823-839
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• 2012

Environmental Specimen Banks (ESBs) are playing pivotal role in monitoring the effect of environmental pollution on the ecosystem based on the retrospective analysis of the representative samples collected regularly and stored in cryogenic condition. In Korea, National Environmental Specimen Bank (NESB) was established in 2009 and the standard operating procedures (SOPs) for sampling, and cryogenic milling and storage had been prepared during 2007-2010. Since then, the tentative SOPs for the seven kinds of specimens (shoots of Red Pine (Pinus densiflora) and Korean Pine (Pinus koraiensis), leaves of Mongolian Oak (Quercus mongolica) and Zelkova Tree (Zelkova serrata), eggs of Feral Pigeon (Columba livia var. domestica), muscles and organs of Common Carp (Cyprinus carpio), and Freshwater Bivalve (Unio (Nodularia) douglasiae)) have been put to test in the field and laboratory as well against the practicality and feasibility. The SOPs were improved by reflecting the findings from the research and the following discussion regarding the selection of specimen (Feral Pigeon suffering from a control management), sample size (a problem of decreasing number of sampling trees related to increasing sampling time) and period (a problem related to a bud growth), and sampling methods etc.. In addition, barcoding system for the management of the specimen information, and monitoring system of the cryogenic storage to regulate the optimum temperature and the liquid nitrogen level were also developed for the efficient and effective control of the samples. Lastly, the safety guide and emergency protocol were augmented to guarantee a safe work environment with the cryogenic facility. These improvements of the SOPs are expected to contribute to more stable operation of the NESB.