• Animal cells and systems
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• v.8
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• pp.29-29
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• 2004

• 한국환경농학회:학술대회논문집
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• 2011.07a
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• pp.174-176
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• 2011

• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.21-21
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• 1999

No Abstract, See Full Text

• Water for future
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• v.55 no.9
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• pp.98-104
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• 2022

• Korean Architects
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• s.655
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• pp.100-102
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• 2023

• The Korean Journal of Ecology
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• v.27 no.4
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• pp.211-216
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• 2004

The complex ecological researches were made in the broad-leaved forest zone of Central Europe in nature reserves and national parks located on the banks of the river (hydrology, vegetation, soils, unconfined ground waters). The natural conditions of terrestrial ecosystems and natural sites were compared along the course of the rivers. The significant negative influence of low-dammed (low-confined hydrotechnic) construction and small reservoirs on vegetation and soils of floodplain was revealed. On the basis of analysis of mean annual water level and flow trends on the multi-years series (60-100 years) of the hydrometric stations on the rivers under consideration the significant influence of natural long-term variability of watering on vegetation dynamics in the floodplains was revealed.

• 한국경영정보학회:학술대회논문집
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• 2007.11a
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• pp.343-348
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• 2007

In a customer-driven economy, single-business level analysis may not be sufficient. A large number of loosely interconnected participants who depend on one another for their mutual effectiveness and survival make up a business ecosystem. A business ecosystem is a holistic view of vital flows and relationships that sustain business activity. Businesses need to understand their physical condition in a business ecosystem to evaluate their capabilities. This paper defines the healthiness of business ecosystems in order to understand their competitiveness. It can give business an actionable guide. Healthy ecosystem means a business environment that has had four capabilities to survive. IT plays a leading part in healthy business ecosystem. It looks into business strategies and the role of IT in business ecosystems.

• Journal of Environmental Policy
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• v.1 no.1
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• pp.91-110
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• 2002

Ecosystem health assessment is an emerging concept regarded as a useful diagnostic tool for evaluating ecosystems. The stability of ecosystem is the main theme in the assessment. Generally, two components - resilience and resistance - are involved in the mechanism of ecosystem stability. In this study, relative degrees of the resistance and the resilience were quantified for most aquatic Insects Inhabiting running waters in Korea. A total of 34 groups were newly categorized based on previous studies, and a conceptual model has been produced. The model was applied for the aquatic insect communities inhabiting different streams and demonstrated that each stream ecosystem possessed different degrees of stability. This study also indicated that it was possible to compare stabilities of different ecosystems using relative degrees of resilience and resistance. Using the conceptual model, suitable conservation and management strategies could be recommended in ecological assessments. The model can be used as a stepping-stone for developing more comprehensive methodology that objectively diagnoses and evaluates the ecosystem stability.

• Journal of the Korean Institute of Landscape Architecture
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• v.34 no.6 s.119
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• pp.22-38
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• 2007

Since 1990, urban areas have been expanded rapidly due to the concentration of the population and several development projects including large scale apartment complexes and residential developments. Due to these development projects, the quality and functions of ecosystems have been continuously degraded, regardless of public agencies' efforts introducing development index, guideline, and amendment of law for sustaining the quality of ecosystems. Substantial guideline and content cannot expect the sustainable maintenance of nation's natural resources. Recent improve this situation, ecological planning was introduced, but research data of environments and objective systems were not enough showing the limits. The purposes of this study were to reduce the urban sprawl caused by residential development plans for environment-friendly residential developments, to establish applicable ecological planning, and to suggest the land use plans that reduce adverse effects of developments to nature ecosystem.

• Journal of Plant Biology
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• v.33 no.2
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• pp.147-150
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• 1990

Different species with similar niches can coexist in the same community if disturbances prevent compeptitive exclusion of competitively inferior species. Disturbances which open up gaps are common in all kind of community. Even in virgin forests without any artificial disturbance, there exist a significant proportion of trees of early successional shade-in-tolerant species in addition to the dominant late successional shade-tolerant species. In forest ecosystems, most canopy tree species including shade-tolerant ones require one or more gaps in their life-time to reach the canopy. Because of these frequent disturbances, forests can be considered of dynamic mosaics of patches of different ages and with different species composition which are in certain stages of recovery from disturbances. Disturbances temporarily increase the availability of resources such as light, water and soil nutrient for other in dividuals through the death of one or more canopy trees.