• Ecology and Resilient Infrastructure
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• 제7권4호
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• pp.366-373
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• 2020

세종보 수문개방을 통하여 하도내에 다양한 모래톱이 만들어지면서 모래톱의 생태계 가치와 기능에 대한 연구 필요성이 증가하고 있다. 본 연구는 세종보 수문개방 전·후의 하도 내 지형 변화를 생태지형학적으로 분석하여 서식처의 관점에서 보 개방 효과를 규명하고자 하였다. 이를 위해 고해상도 항공사진의 공간분석을 수행하여, 수역과 육역을 17개 서식처 유형으로 분류하여 서식처다양도 지도를 작성하고 서식처다양도 지수를 산정하였다. 연구결과, 보 상류는 개방 전 저수지였던 깊은 정수성 서식처에서, 개방 후에는 여울과 소, 평여울, 완여울 등 유수성 서식처가 증가하고 얕은 정수성 서식처가 나타나는 등 수중 서식처의 유형이 다양해지고 복잡해졌다. 보 하류에서도 모래톱이 확장되면서 식생이 정착되지 않은 나지형 사주가 나타나고, 유수성 서식처가 증가하였다. 이러한 변화들을 종합하면 보 개방후 서식처다양도 지수가 크게 향상되는 것을 실증적으로 규명하였다. 앞으로 이러한 연구를 기반으로 모래톱의 생태계 가치를 하천관리와 복원에 적용할 수 있는 응용생태 분야의 연구기술 개발이 더욱 요구된다.

• 한국환경생태학회지
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• 제38권1호
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• pp.48-54
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• 2024

본 연구는 백두대간보호지역의 천왕봉에서 악휘봉 구간을 대상으로 조류의 다양성에 영향을 주는 서식지 요인을 구명하기 위해 2021년 4월부터 2022년 12월까지 수행되었다. 백두대간보호지역의 천왕봉에서 악휘봉 구간은 공간적 규모가 736.4km²로 광범위하고 다양한 서식 환경이 혼재하는 지역이다. 그에 따라 조사지역은 서식지 동질성 분석을 통해 3km×3km의 조사구를 선정하여 20개의 조사구를 대상으로 수행하였다. 조사지역의 서식지 환경과 조류의 다양성 사이의 관계를 분석한 결과 조류 군집의 다양성은 육상곤충의 다양성을 비롯하여 경사도, 서식지의 평균 면적, 임상과 해발고도, 농경지와의 거리와 직·간접적으로 관련이 있는 것으로 나타났다. 서식지의 경사도를 비롯한 임상, 농경지로부터의 거리는 먹이원의 발생에 직·간접적으로 영향을 주며 서식지의 평균 면적과 임상은 서식지의 구조적 다양성과 밀접하게 관련된다. 따라서 조류 군집의 다양성은 서식지 내 먹이의 발생량과 서식지의 다양성에 영향을 받는 것으로 판단된다. 본 연구의 조류 군집과 서식지 환경의 관계는 조류 군집의 다양성 증진을 위한 산림의 관리방안을 수립하는데 기초 생태 자료가 될 수 있을 것으로 판단된다.

• 한국미생물학회:학술대회논문집
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• 한국미생물학회 1998년도 제38회 춘계학술발표대회
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• pp.30-33
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• 1998

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제5권1호
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• pp.10-20
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• 2024

The study investigated species diversity, relative abundance, and decline of flying insects and plants within a fragmented forest in the Federal University of Technology Akure (FUTA), Ondo State, Nigeria. It is known that habitat fragmentation can reduce biodiversity. Thus, it is important to perform comprehensive assessments to understand implications of the habitat fragmentation for flora and fauna. Species richness and abundance of flying insects and plants across fragmented forest patches were quantified using field surveys and taxonomic identification. This study revealed shifts in species diversity, with fragmented areas exhibiting reduced biodiversity compared to contiguous forest ecosystems. Flying insects crucial for ecosystem functioning and pollination services demonstrated decreased species richness and relative abundance within fragmented habitats. This decline was attributed to habitat loss, altered microclimates, and limited movement pathways known to hinder insect dispersal. Similarly, plant species richness and abundance showed decline in fragmented forest due to disrupted mutualistic interactions with pollinators, altered nutrient cycling, and increased competition among plant species. This study underscores the importance of maintaining intact forest habitats to sustain healthy ecosystems and preserve biodiversity. Effective conservation strategies should focus on habitat connectivity, reforestation efforts, and protection of essential ecological corridors to mitigate effects of fragmentation. In conclusion, this investigation provides empirical evidence for effects of habitat fragmentation on flying insects and plants in a forest ecosystem in FUTA Akure, Nigeria. Findings emphasize an urgency of adopting conservation measures to safeguard these invaluable components of biodiversity and ecosystem stability in the face of ongoing habitat loss and fragmentation.

• Spatial Information Research
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• 제8권2호
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• pp.233-241
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• 2000

The objective of this study were to develop landscape scale ecosystem assessment model, and apply the model for the assessment of the state and change of ecosystem of the study area, Yongin, Korea. Since natural ecosystem of the site has been deteriorated significantly during recent extensive residential development, it is essential to correctly assess ecosystem of the study site. Traditional ecosystem assessment mainly utilizing intensive field survey requires high cost, but the outcome rarely represents spatial pattern of the regional ecosystems. Ecosystem assesment of landscape scale based on landscape ecology can resolve most of the shortfalls of the traditional approach. The research method can be summarized as follows. First, extensive literature review on such topics as spatial pattern of ecosystem, ecosystem assessment of landscape scale, ecological analysis was carried out. Second, a model for the ecosystem assessment of landscape scale emphasizing spatial pattern of ecosystem was developed. This model evaluates three indicators; ecological integrity and biological diversity, watershed integrity, and landscape resilience of 11 watersheds in the study area. Finally, ecological assessment utilizing two sets of indicators, enhancement of and disturbance of ecosystem stability, was carried out. This assessment method is based on Environmental Monitoring and Assessment Program´s Landscape component(EMAP-L) of EPA(1994). The results of this study are as follows. First, the ecosystem assessment of landscape scale of the study area of Yongin, Korea, showed that escosystems of Tanchun01 and Chungmichun01 watersheds had the worst state in the study site in 1991. On the other hand, the ecosystems of Jinwechun01, Kyunganchun02, and Bokhachun01 watersheds had the most stable ecosystem in 1991. Second, ecosystems of Tanchun01, Shingal reservoir, and Kyunganchun01 watersheds were evaluated to be the worst state in the study site in 1996. And, ecosystems of Jinwechun01 and Gosam reservoir watersheds had the most stable ecosystem. Third, ecosystem of Tanchun01 watershed which incudes Suji residential development project site changed the most drastically between 1991 and 1996. The ecosystem of the watershed the most drastically deteriorated due to it´s proximity to Seoul and Bundang new town.

• 농촌계획
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• 제27권2호
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• pp.49-58
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• 2021

Rural and agricultural landscapes are important forms of land use in maintaining biodiversity. In addition humans are provided with various public functions from ecosystems and agricultural ecosystems. But the creation of a facility horticultural complex can be a space that can undermine the public interest function of the agricultural ecosystem. Therefore, this study aims to quantify the function of ecosystem services that land use changes affect biodiversity in Korea's rice paddy fields. The area subject to the study was selected as the largest agricultural complex in Korea due to rice paddy fields and land use changes, and field agriculture was also carried out simultaneously. The survey was conducted only in the fields of vegetation, insects, amphibians, and birds, four areas of biodiversity that are believed to have a high impact on changes in land use in agricultural landscapes. The valuation of ecosystem services in four areas of biodiversity derived from this study was evaluated as non-market value. As a result of quantitative evaluation, about 25 species of vegetation were reduced due to changes in land use. The diversity of about 40 species of aquatic insects that inhabit rice paddies among insects has disappeared due to the creation of a horticultural complex. Birds and amphibian reptiles were also found to have decreased diversity and populations. This research is expected to be used in various ways to develop policies to enhance ecosystem service functions.

• 한국환경과학회지
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• 제15권11호
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• pp.1077-1086
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• 2006

This study aims at analyzing relationships between land use and habitat types of winter wildbirds to provide basic understanding of ecosystem for preservation and restoration of urban ecosystem in the future. The research area is Hanam City. Researches on land use types showed Hanam City had 79.1% of greenspace and openspace, but intensive urban development has been taking place in greenspace that is adjacent to urban districts. This has brought the problems of lack of greenspace in urban districts and damages to cultivated areas and grassland. A total of 61 and 8,642 populations of winter wildbird species were observed in research areas. Paradoxornis webbiann(16.91), Passer montanus(11.93), Pica pica(6.88) were dominant species. When they were divided according to habitat types, 20 species of interior species, 8 species of interior-edge generalist species, 12 species of edge species and 3 species of urban species were observed. When which land use type was mostly served as wildbirds habitats was examined, urban species(3 species and 290 populations) was a dominant species in urban districts while in greenspace and openspaece, water species(19species and 3,075 populations) including winter migratory birds was. Among greenspace and openspaece, edge species was dominant in forest while urban species was a dominant species in cultivated areas. This shows there is a need to improve diversity of wildbirds through restoration of cultivated areas in the central part of Hanam City.

• 농촌계획
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• 제21권4호
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• pp.45-53
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• 2015

Agriculture, rural landscapes are accompanied by a variety of environmental issues. Therefore, it is necessary to study on biodiversity and ecosystem services. Horticulture complex is low groundwater recharge function, it can be evaluated as a facility that biodiversity is impaired. The ecosystem services in agricultural landscapes were obtained 19 kinds of functions. Experts survey Groundwater recharge function (4.13) teeth chapter higher, Water storage (4.05), Amphibian & Reptile habitat (3.96), Aquatic insect habitat (3.92), Flood control (3.87), Water purification (3.86), Avian habitat (3.76 ), Creating landscape (3.74), Vegetation diversity (3.71), Experience, Education (3.69), Biological control (3.48), Fishery habitat (3.42), Climate regulation (3.30), Mammal habitat (3.30), Air quality regulation (3.25 ), Mainenance of genetic diversity (3.25), were analyzed in order Rest area (3.14). Improving capabilities in the Detention Pond, Wetland, Green space, Corridor, Non-Chemical, Program development, Green spaces, Rainwater storage facilities, Water cycle system, Surface water storage facilities, Infiltration trench, Water purification facilities, Permeable pavement. Environmentally friendly, and to contribute to sustainable agricultural development through ecological planning.

• 농업과학연구
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• 제39권4호
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• pp.545-553
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• 2012

In Asia, including Japan and Korea, rice paddies occupy the largest cultivated area in agricultural land. Rice paddies provide the habitats for many organisms including endemic species, sustaining high biodiversity. Insect natural enemies inhabiting rice paddies have an important function for rice production as agents of 'ecosystem services' because they play a major role in suppressing rice pests. The diversity and abundance of natural enemies can be a good index reflecting the 'healthiness' of agro-ecosystem services in rice paddies. The present study investigates whether insect natural enemies could be good biological indicators for general arthropod biodiversity and agricultural practice. First, the concept of ideal bio-indicators was summarized. The strategy to explore and select such bio-indicators was then proposed. Lastly, field survey was made to evaluate the abundance and biodiversity of natural enemies in Japanese rice paddies where chemical inputs, i.e., insecticide use, were different. The results showed that reduction of chemical inputs led to an increase in species richness or diversity of natural enemies including parasitoids and predators. Then, the data were analyzed to examine suitable indicator species to assess environmental soundness of agricultural practice and biodiversity in rice paddies. The density of several species of natural enemies did respond both to pesticide use and to general arthropod biodiversity. The analyses thus have indicated that natural enemies can be suitable as bio-indicators. Usefulness of indicator species in rice paddies is discussed in the context of ecologically sound agriculture.

• 생태와환경
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• 제43권2호
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• pp.242-254
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• 2010

인위적 요인에 의해 특성이 바뀐 하천은 인류에게 좋은 기능을 제공하기도 하나 역기능을 주기도 한다. 역기능은 주로 교란으로서 교란이 나타나면 하천의 구조 및 기능 상실은 시간의 경과에 따라 심화된다. 따라서 이 악순환을 끊기 위하여 현황에 대책 마련이 바람직하다. 낙동강에서 하천교란이 이루어진 3개 구간 및 대조구간에서 3년간 어류상을 활용하여 하천생태를 평가하였다. 2007년부터 2009년까지 낙동강의 6개 조사지점에서 나타난 어류상은 3목 10과 41종이었다. 확인된 어종 중 한국고유종은 14종 (34.1%), 외래어종은 3종 (7.3%)이었다. 하천 생태평가 시 출현 종 수, 군집분석, 생태계 구조 및 서식처 다양성을 적용하였다. 6개 지점의 3년 종합 자료 평가를 보면 안동댐 하류, 내성천 수계에서는 출현어종의 수적 불안전성을 나타낸 반면 감천은 안동댐 수계보다 출현종의 다양성이 나타나고 있었다. 안동댐 하류, 내성천, 그리고 감천을 포함하는 모래하천은 임하댐 하류 및 길안천을 포함하는 자갈하천보다 생물 다양성과 서식처 다양성이 우수한 것으로 나타났다.