텍스트마이닝 (text-mining) 기법을 이용한 국내 담수외래종 연구동향 파악

도윤호 ( Yuno Do ),고의정 ( Eui Jeong Ko ),김영민 ( Young Min Kim ),김효겸 ( Hyo Gyeom Kim ),주기재 ( Gea Jae Joo ),김지윤 ( Ji Yoon Kim ),김현우 ( Hyun Woo Kim ) 한국하천호수학회(구 한국육수학회) 2015 생태와 환경 Vol.48 No.3

We identified research trends for freshwater exotic species in South Korea using text mining methods in conjunction with bibliometric analysis. We searched scientific and common names of freshwater exotic species as searching keywords including 1 mammal species, 3 amphibian-reptile species, 11 fish species, 2 aquatic plant species. A total of 245 articles including research articles and abstracts of conference proceedings published by 56 academic societies and institutes were collected from scientific article databases. The search keywords used were the common names for the exotic species. The 20th century (1900’s) saw the number of articles increase; however, during the early 21st century (2000’s) the number of published articles decreased slowly. The number of articles focusing on physiological and embryological research was significantly greater than taxonomic and ecological studies. Rainbow trout and Nile tilapia were the main research topic, specifically physiological and embryological research associated with the aquaculture of these species. Ecological studies were only conducted on the distribution and effect of large-mouth bass and nutria. The ecological risk associated with freshwater exotic species has been expressed yet the scientific information might be insufficient to remove doubt about ecological issues as expressed by interested by individuals and policy makers due to bias in research topics with respect to freshwater exotic species. The research topics of freshwater exotic species would have to diversify to effectively manage freshwater exotic species.

보전문화체학 접근방식을 통한 생태계교란 생물인 담수 외래종의 대중인식 평가

박웅배(Woong-Bae Park),도윤호(Yuno Do) 한국습지학회 2021 한국습지학회지 Vol.23 No.4

담수 외래종에 대한 대중의 인식은 시대나 외래종과 관련된 특정 사건에 따라 달라진다. 인식차이는 관리계획을 수립하고 이해하는데 영향을 미쳐 외래종을 관리하는데 대중들의 인식을 이해하는 것이 중요하다. 본 연구에서는 보전문화체학 (Conservation culturomics)에서 사용하는 소셜 네트워크 플렛폼의 디지털 텍스트, 언론보도, 인터넷 검색량을분석하여 담수 외래종에 대한 대중의 관심도와 감성을 파악하고자 하였다. 11종의 담수 외래종을 대상으로 트위터 게시글 수와, 언론보도량, 검색량을 추출하여 대중의 관심도를 파악하였다. 또한 이 자료들의 시간에 따른 추세와 계절변동성여부, 자료의 반복 주기를 확인하였다. 수집된 자료를 텍스트마이닝 기법 기반의 감성분석을 통해 감성지수(sentiment score)로 산출해 각 종에 대한 대중들의 감성을 분석하였다. 연구결과 황소개구리와 뉴트리아, 파랑볼우럭, 큰입우럭은 다른 종들보다 상대적으로 많은 대중의 관심을 받는 것으로 확인되었다. 일부 종에서는 특정 시기에 따라반복되고 변화하는 트윗량과, 언론보도량, 검색량을 나타냈다. 한편 텍스트마이닝 분석 결과, 대부분의 사람들이 담수외래종에 대해 부정적인 감성을 가지고 있었다. 특히 생태계교란 생물이 지정된 이후 연도가 갈수록 부정적인 감성은증가하였다. 하지만 과학적 근거가 없는 정보가 확산되거나 혐오를 증대시켜 담수 외래종을 관리하는 것은 한계가 있다. 따라서 외래종에 대한 대중들의 인식을 과학적으로 파악하여 관리방안이 수립되어야 한다. Public awareness of alien species can vary by generation, period, or specific events associated with these species. An understanding of public awareness is important for the management of alien species because differences in public awareness can affect the establishment and implementation of management plans. We analyzed digital texts on social media platforms, news articles, and internet search volumes used in conservation culturomics to understand public interest and sentiment regarding alien freshwater species. The number of tweets, number of news articles, and relative search volume to 11 freshwater alien species were extracted to determine public interest. Additionally, the trend over time, seasonal variability, and repetition period of these data were confirmed. We also calculated the sentiment score and analyzed public sentiment in the collected data using sentiment analysis based on text mining techniques. The American bullfrog, nutria, bluegill, and largemouth bass drew relatively more public interest than other species. Some species showed repeated patterns in the number of Twitter posts, media coverage, and internet searches found according to the specified periods. The text mining analysis results showed negative sentiments from most people regarding alien freshwater species. Particularly, negative sentiments increased over the years after alien species were designated as ecologically disturbing species.

4대강 사업 후 낙동강 중,하류의 하중도와 제외지 지형변화

임란영 ( Ran Young Im ),김지윤 ( Ji Yoon Kim ),최종윤 ( Jong Yun Choi ),도윤호 ( Yuno Do ),주기재 ( Gea Jae Joo ) 한국하천호수학회(구 한국육수학회) 2015 생태와 환경 Vol.48 No.3

River channel dredging and riparian development have been influenced morphology and quantity of natural river habitat. We compared distribution of riverside land and alluvial island in the Nakdong River with field survey and remote sensing analysis after the 4 Large River Project in South Korea. We digitized geomorphological elements, includes main channel, riverside land, and alluvial island by using georeferenced aerial photos taken in pre-dredging (2008) and post-dredging (2012) periods. Field survey was followed in 2012 for a ground truth of digitized boundaries and identification of newly constructed wetland types such as pond, channel, branch, and riverine type. We found that during the dredging period, riverside land and alluvial island were lost by 20.2% and 72.7%, respectively. Modification rate of riverside land was higher in the section of river kilometer 50~90, 140~180, and 210~270. Alluvial island had higher change rate in the section of river kilometer 50~70, 190~210, and 270~310. Average change rate for the riverside land and alluvial island was - 1.02±0.14 km2 ·10 km-1 and - 0.05±0.05 km2 ·10 km-1, respectively. Channel shaped wetlands (72.5%) constituted large portion of newly constructed wetlands.

버드나무류 (Salix spp.)의 계절학적 특성과 주요 기상요인 상관분석

김성보 ( Seong Bo Kim ),김지윤 ( Ji Yoon Kim ),임란영 ( Ran Young Im ),도윤호 ( Yuno Do ),박희순 ( Hee Sun Park ),주기재 ( Gea Jae Joo ),김구연 ( Gu Yeon Kim ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

The objective of this study was to analyze correlation between phenological characteristics of Salix spp. and meteorological factors in the Upo wetlands. Phenology of Salix subfragilis Andersson and Salix chaenomeloides Kimura was monitored from 2007 to 2012. Meteorological variables were monitored by Korea Meteorological Administration (Hap-chon). Average date of flowering, fruiting, seed dispersion was 86, 113, 136 days for S. subfragilis and 112, 140, 164 days for S. chaenomeloides as Julian days. Flowering of S. subfragilis and S. chaenomeloides were correlated with daily mean air temp. in March (r=-0.92, r=-0.85, p<0.05). Fruiting of S. subfragilis was correlated with total precipitation between Jan and March of previous year (r=-0.90, p<0.01), however, the fruiting of S. chaenomeloides was highly correlated with max. temp. in Jan of previous year (r=0.99, p<0.01). Seed dispersion of both species is correlated with min. temp. in Feb. Phenology monitoring will contribute to understanding Salix spp. response against climate change.

남부지역 소형 관개용 못들에서의(둠벙) 동물플랑크톤 군집특성 조사 및 평가

김항아 ( Hang Ah Kim ),최종윤 ( Jong Yoon Choi ),김성기 ( Seong Gi Kim ),도윤호 ( Yuno Do ),주기재 ( Gea Jae Joo ),김동균 ( Dong Kyun Kim ),김현우 ( Hyun Woo Kim ) 한국하천호수학회(구 한국육수학회) 2012 생태와 환경 Vol.45 No.4

This study demonstrates the investigation of zooplankton communities (e.g. rotifers, cladocerans and copepods) and environmentally related driving factors (e.g. elevation, area size, water depth, types of dike construction, and bottom substrates). We hypothesized that zooplankton community structure and composition would be influenced by ambient driving forces in different scales of the irrigation ponds (Dumbeong). A total of 66 zooplankton species/groups (56 rotifers, 9 cladocerans, 1 copepods) were found and identified at 45 Dumbeong of Goseong region (i.e. Goseong-gun) in 2011. The rotifers occupied 84.9% of the total zooplankton abundance. We could categorize a clear separation of zooplankton communities into 4 different patterns based on cluster analysis. Zooplankton diversities in Dumbeongs were lower than those in natural ponds or wetlands. In addition, community structure of zooplankton was also simpler and had a broken stick distribution based on SHE analysis. Species composition in each Dumbeong was not significantly discriminated each other. The result of canonical correspondence analysis (CCA) pinpointed that significant influential variables upon zooplankton community were dissolved oxygen percent saturation, pH, and Dumbeong`s material. This study indicated that morphological type of the Dumbeong and its water quality could determine the community structure of zooplankton. Furthermore, the connectivity between ambient habitats and materials could be necessary to be rigorously considered in respect to producing the Dumbeongs to subsidize alternative habitats for wetland ecosystem in freshwater landscape.

다양한 이론적 도시규모에서의 습지 보전을 위한 게임 이론 적용

임란영(Ran-Young Im),김지윤(Ji Yoon Kim),도윤호(Yuno Do) 한국습지학회 2024 한국습지학회지 Vol.26 No.1

습지의 보전 및 복원은 지속 가능한 인간 사회와 환경을 위한 필수적 과제로, 생물다양성 유지, 자연재해 저감, 기후변화 완화 등 중요한 혜택을 제공한다. 본 연구는 습지 복원 및 조성을 위한 다양한 이해관계자들 간의 전략적 상호작용과 이익을 게임 이론을 통해 분석하고, 정책 결정에 중요한 근거를 제공하고자 한다. 이 연구에서는 대도시, 중소도시, 소도시의 세 가지 도시 유형에 대해 가상의 상황을 설정하고, 정부, 개발회사, 환경단체, 지역 주민 등의 이해관계자를 정의하였다. 각 이해관계자별 전략적 선택 사항을 도출하고, 습지생태 전문가들의 논의를 통해 보수행렬을 설정하였다. 이후 비협력적 게임 이론을 적용하여 내쉬 균형과 파레토 효율성을 분석하였다. 대도시에서는 ‘습지 보존’과‘친환경 개발’, 중소도시에서는 다양한 전략들, 그리고 소도시에서는 '친환경 개발'이 이해당사자 모두에게 이득이 되는 해결책으로 나타났다. 파레토 효율성 분석 결과, 각 도시 유형별로 습지 관리와 관련하여 이해당사자들 간의 최적의 해결책이 어떻게 달라질 수 있는지를 보여주었다. 도시 유형별로 습지 보존, 친환경 개발, 습지 복원 사업이 각각중요하게 부각되었다. 이에 따라 정책 입안자들은 환경 보호와 도시 개발의 조화를 이루는 규제와 인센티브를 마련하고, 지역 사회의 참여를 촉진하는 프로그램을 고려해야 한다. 이해당사자별 역할과 전략을 통해 습지 보존과 지역 경제 발전을 동시에 촉진하는 방안을 모색해야 한다. 전략별 장단점을 이해하고, 이를 바탕으로 보다 효과적인 정책 결정을 내리는 것이 중요하다. The conservation and restoration of wetlands are essential tasks for the sustainable development of human society and the environment, providing vital benefits such as biodiversity maintenance, natural disaster mitigation, and climate change alleviation. This study aims to analyze the strategic interactions and interests among various stakeholders using game theory and to provide significant grounds for policy decisions related to wetland restoration and development. In this study, hypothetical scenarios were set up for three types of cities: large, medium, and small. Stakeholders such as governments, development companies, environmental groups, and local residents were identified. Strategic options for each stakeholder were developed, and a payoff matrix was established through discussions among wetland ecology experts. Subsequently, non-cooperative game theory was applied to analyze Nash equilibria and Pareto efficiency. In large cities, strategies of ‘Wetland Conservation’ and ‘Eco-Friendly Development’ were found beneficial for all stakeholders. In medium cities, various strategies were identified, while in small cities, ‘Eco-Friendly Development’ emerged as the optimal solution for all parties involved. The Pareto efficiency analysis revealed how the optimal solutions for wetland management could vary across different city types. The study highlighted the importance of wetland conservation, eco-friendly development, and wetland restoration projects for each city type. Accordingly, policymakers should establish regulations and incentives that harmonize environmental protection and urban development and consider programs that promote community participation. Understanding the roles and strategies of stakeholders and the advantages and disadvantages of each strategy is crucial for making more effective policy decisions.