Assessing the Habitat Potential of Eurasian Otter (Lutra lutra) in Cheonggye Stream Utilizing the Habitat Suitability Index

김인유,최광훈,고동욱 한국환경생태학회 2023 한국환경생태학회지 Vol.37 No.2

The Eurasian otter (Lutra lutra) is an apex predator of the riparian ecosystem. It is a keystone and an indicator species; consequently, its presence suggests a sustainable water environment. Otter is a keystone species as a predator at the top of the food web in the aquatic environment and an indicator species representing the health of the aquatic environment. Although Eurasian otters disappeared from the Han River urban water system because of anthropogenic activities like habitat destruction, poaching, and environmental pollution in the1980s, the species were sighted in the Cheonggye Stream, Jungrang Stream, and Seongnae Stream, which are urban sections of the Han River, in 2016 and 2021. Therefore, it is pertinent to assess the habitat potential in the area for conservation and management measures to ensure its permanent presence. However, existing studies on otter habitats focused on natural rivers and reservoirs, and there is a limit to applying them to habitats artificially confined habitats in narrow spaces such as tributaries in urban areas of the Han River. This study selected the Cheonggye Stream, an artificially restored urban stream, to evaluate its potential as a habitat for Eurasian otters in urban water environments using the habitat suitability index (HSI). The HSI was calculatedwith selected environment attributes, such as the cover, food, and threat, that best describe the L. lutra habitat. According to the results, the confluence area of Seongbuk Stream and Cheonggye Stream and the confluence area of Cheonggye Stream and Jungnang Stream were suitable otter habitats, requiring appropriate conservation efforts. The HSI model suggests a valuable method to assess the habitat quality of Eurasian otters in urban waterenvironments. The study is crucial as it can help rehabilitate the species’ populations by identifying and managing potential Eurasian otter habitats in highly urbanized areas of the Han River basin and its tributaries.

Ecosystem engineering influence of Mongolian marmots (Marmota sibirica) on small mammal communities in Mongolia

Buyandelger Suuri,Otgonbayar Baatargal,Badamdorj Bayartogtokh,Richard P. Reading 국립중앙과학관 2022 Journal of Asia-Pacific Biodiversity Vol.15 No.2

Mongolian marmots (Marmota sibirica) live in colonies that consist of numerous burrows and are considered ecosystem engineers. Although once a common steppe species, marmots are now endangered due to overharvesting, which has led to concerns over the impacts of their loss on other species. The decline of marmots likely affected other species given their importance to the ecosystems they inhabit. To examine the role of marmots on small mammal, we established Sherman traps and drift fence arrays with associated pitfall and funnel traps on active marmot colonies, inactive colonies, and control sites in the forest-steppe and semi-desert zones of Mongolia. Overall, we identified 385 individuals representing 11 species of rodents and 1 species of bat in Ikh Nart and 149 individuals representing 2 species of rodents and 1 species of insectivore from Hustai. We found mixed results between diversity indices and abundance of small mammals on treatment and control sites, complicating the picture. During periods of greater precipitation and resulting higher vegetation cover, species abundance and the Shannon-Wiener, Simpson's, and evenness indices all changed significantly, suggesting that the effect of marmots on other species varies based on environmental conditions.

산림의 토양환경 조건에 따른 수지상 균근(AM)균 집단의 종 다양성

구창덕 ( Gu Chang Deog ) 한국환경복원기술학회 2000 한국환경복원기술학회지 Vol.3 No.1

산학협력생태계의 위기와 조직생태학적 관점의 핵심종 진화전략: 중소벤처기업부의 중소기업산학협력센터와 창업보육센터를 중심으로

홍은영(Eun-Young Hong),손윤정(Yoon-Jeong Son),최종인(Jong-In Choi) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.7

한국 정부는 1990년대 초반부터 중소기업을 통한 지역혁신과 경제활성화를 위해 동일한 지역권내에 속한 대학 및 연구기관과 기업간의 협력을 유도하였다. 25년이상 이어져온 이 산학협력생태계는 초기 중소기업의 기술경쟁력을 강화시키고 국가경제를 활성화하는데 기여하였다. 즉, 중소벤처기업부 주도로 대학 및 연구기관에 설립된 중소기업산학연협력센터와 창업보육센터 주도로 구축되었기 때문에, 이 두 조직은 산학협력생태계의 핵심종이라 할 수 있다. 하지만, 최근 정부지원 약화가 이 핵심종의 약화로 이어지면서, 오랫동안 구축되어온 네트워크의 소실, 공공섹터의 창업인프라 약화, 첫걸음 기업의 기술개발 참여 어려움, 인적자원 약화 등 산학협력생태계에 부정적인 영향을 미치고 있다. 우리의 연구는 핵심종이 변화된 환경하에서 앞으로 어떻게 진화하면 건강한 산학협력생태계를 지속할 수 있을지를 탐색하는 것이 목적이다. 연구를 위해, 먼저 트리플헬릭스의 진화된 모델과 조직생태학에 대해 이론적으로 고찰한다. 이후, 산학협력생태계의 핵심종의 역할과 현황을 파악한 후, 생태계의 위기를 논한다. 마지막으로, 핵심종이 처한 변화된 환경하에서 적소를 찾고 생존을 위한 변이과정을 거쳐 위기를 극복하여 산학협력생태계에서 지속하여 선택 및 보존될 수 있는 요인을 탐색한다. 결론적으로, 단일부처의 파이프라인 전략을 다부처의 플랫폼 지원사업으로의 전환을 통해 핵심종의 새로운 도약을 이끌어야 할 것이다. Since the early 1990s, the Korean government has induced cooperation between universities, research institutes, and companies within the same region for regional innovation and economic vitalization through small and medium-sized enterprises (SMEs). This industry-academic cooperation ecosystem, which has been running for over 25 years, has helped strengthen the technological competitiveness of early SMEs and revitalize the national economy. This ecosystem was built under the leadership of the Small and Medium Business Industry-Academic-Research Cooperation Center, and Startup Incubator established at universities and research institutes led by the Ministry of SMEs and Startups. These two organizations are key species in the ecosystem. On the other hand, the recent weakening of key species has negatively affected the ecosystem. This study suggests a strategy for the evolution of key species to sustain the industry-academic cooperation ecosystem. In conclusion, it is necessary to lead a new leap forward in core species by converting the pipeline strategy of single ministries into platform support projects of multi ministries.

How to Assess the Success of Restoration Planting

구창덕,이돈구 한국산림과학회 2005 Forest Science And Technology Vol.1 No.1

To investigate the assessment of restoration success, we reviewed assessment program design, attributes to be restored, indicators for success assessment and criteria for determining success. Assessing the success of a restoration project is needed to advance both restoration management itself and the development of the science of restoration ecology. The assessment is performed by measuring the attributes correlated with the ecosystem structure and function. The success or failure of a project can be determined by examining the similarity of the plantings to naturally regenerating forests and the resilience of the restored sites. However, determining the success or failure within a short-term frame is extremely difficult due to the absence of any standard criteria for judging the success of the project. When the success of a restoration planting project needs to be assessed within a short-term time frame, only the success potential can be predicted, not the future success of the restoration itself. Nevertheless, restoration planting practices still include many arbitrary decisions in areas such as the selection of keystone species and the improvement of survival rates. In addition, after the assessment process is completed the restoration still proceeds with a high degree of uncertainty. Thus, continual monitoring of the restoration planting and hypothesis testing of the plantings are recommended.

어류서식처 평가 및 목표종 도입을 통한 하천복원방향 -부안댐 상류 거석천과 청림습지를 대상으로-

박선아 ( Sun A Park ),이명우 ( Myung Woo Lee ) 한국환경복원기술학회 2008 한국환경복원기술학회지 Vol.11 No.4

오대산국립공원 어류군집의 복원 모니터링

김재훈(Jaehoon Kim),김범준(Beomjun Kim),박승철(Seungchul Park),김희갑(Hekap Kim),최재석(Jaeseok Choi) 국립공원연구원 2022 국립공원연구지 Vol.13 No.1

본 연구는 오대산국립공원 어류군집의 복원 정도를 파악하고자 2021년 5월부터 10월까지 17개 지점을 조사해 9과 19종 4,624개체를 확인하였다. 각 지점들의 유사도분석을 실시한 결과, 아무르강 수계(영동지역)와 황하강 수계(영서 지역)의 어종들이 뒤섞인 그룹들로 묶여 어류군집이 매우 교란된 상태임을 알 수 있었다. 특히 열목어는 과거 오대천 상류역에서 ‘지역절멸’ 되었으나, 지역 출현율이 2004년 14%에서 2021년 86%로 서식지가 확대되는 등 복원이 확인되어 과거의 명성을 되찾고 있다. 열목어는 최상류의 핵심어종으로 하천 상류 어류군집 복원에 중요한 역할을 할 것으로 기대된다. This research was conducted three times at 17 sites from May to October 2021 to determine the degree of restoration of the fish community. A total 4,624 of individuals were collected into 19 species belonging to 9 families. As a result of clustering of each site, the fish species of the Amur river stream system(Youngdong region) and the Yellow river stream system(Youngseo region) were grouped into a mixed group, indicating that the fish community was very disturbed. Especially, Brachymystax lenok tsinlingensis was regionally extinct in the past. But it regained its reputation in the past by habitat expanded from 14%(2004) to 86%(2021). Brachymystax lenok tsinlingensis is keystone species in the upper stream. Therefore it is expected to play an important role in the restoration of the upper stream fish community.

대전 창업생태계 조직군의 진화전략

홍은영,최종인 혁신클러스터학회 2023 혁신클러스터연구 Vol.13 No.2

The purpose of this study is to present an evolutionary strategy for the survival of organizational groups within the changing environment of the Daejeon startup ecosystem. Organizational ecology and the theory of startup ecosystems are used to approach the startup ecosystem of Daejeon. As the research method focuses on selection by the environment in organizational ecology, the environmental variability of the Daejeon startup ecosystem is analyzed through various literature and data based on Isenberg's (2010) six elements of a startup ecosystem. In addition, the characteristics and commonalities of the "niche" and "variation" processes for survival in the ecosystem are derived through interviews with successful startups. The research results show that despite having the six elements necessary to create a healthy ecosystem, the Daejeon startup ecosystem has negative effects on organizational groups within the ecosystem due to a lack of human capital resulting from changes in government policy and continuous population outflow, as well as some inadequate support factors. Nevertheless, through successful startup cases, factors that can be niched, varied, selected, and conserved within the ecosystem have been discovered. In conclusion, a strategy for the evolutionary development of the ecosystem that can make organizational groups more robust, such as discovering successful startups that can create quality jobs and decentralized policies that can revitalize the region, is needed.

How to Assess the Success of Restoration Planting

( Chang Duck Koo ),( Don Koo Lee ) 한국임학회 2005 Forest Research Vol.1 No.1

How to Assess the Success of Restoration Planting

( Chang Duck Koo ),( Don Koo Lee ) 한국임학회 2005 Forest Science And Technology Vol.1 No.1