• Title/Summary/Keyword: Ecological Community

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Space Syntax Analysis on Street System in Yakryeong Market District in Daegu, Korea (대구 약령시 지구 내 가로 체계의 공간구문 분석)

  • Jeong, Sang Kyu;Lim, Soo Young;Park, Joon Young
    • KIEAE Journal
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    • v.13 no.2
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    • pp.151-156
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    • 2013
  • This study examines the properties of spaces where historical and cultural resources have been preserved in the street system of Daegu Yakryeong market district, by using Space Syntax methodology. The results were obtained through ASA(Angular Segment Analysis) on each node (spatial unit) in the street network. An overall characteristic of spatial configuration in street system of the surveyed district is that nodes in the street network tend to form socially integrated spatial structure to allow easy access to each space in the system. There are a small number of socially isolated spaces in the street system, which are located at nodes in narrow streets adjacent to the roadway outside the district, or in narrow alleys between early modern Korean buildings. More than half of the surveyed spaces have high levels of social integration, which contain buildings playing a central role of the community, a traditional street market, symbolic landmarks. In conclusion, it is expected that the achievements of this study will contribute in leading to rational land use planning for sound and sustainable development of historical and cultural resources in an urban district.

Ecological and Biogeochemical Response of Antarctic Ecosystems to Iron Fertilization and Implications on Global Carbon Cycle

  • Bathmann, Ulrich
    • Ocean and Polar Research
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    • v.27 no.2
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    • pp.231-235
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    • 2005
  • The European Iron Fertilization Experiment EIFEX studied the growth and decline of a phytoplankton bloom stimulated by fertilising $10km^2$ in the core of a mesoscale $(80{\times}120km)$ cyclonic eddy south of the Antarctic Polar Front with about 2 times 7 tonnes of iron sulphate. The phytoplankton accumulation induced by iron fertilization did not exceed $3{\mu}g\;chl\;a\;l^{-1}$ despite a draw down of $5{\mu}M$ of nitrate that should have resulted in at least double to triple the amount of phytoplankton biomass assuming regular Redfield-ratios for draw down after phytoplankton growth in the Southern Ocean. During EIFEX the fertilized core of the mesoscale eddy evolved to a hotspot for a variety of small and medium sized mesozooplankton copepods. In contrast to copepods, the biomass of salps (Salpa thompson)) that dominated zooplankton biomass before the onset of our experiment decreased to nearly extinction. Most of the species of the rnosozooplankton community showed extremely hiか feeding rates compared to literature values from Southern Ocean summer communities. At the end of the experiment, massive phytoplankton sedimentation reached the sea floor at about 3800m water depth.

A Comparative Study of Primary Production by using the $^{14}C$ and Oxygen Methods ($^{14}C$ - 법과 산소법에 의한 일차생산 비교연구)

  • 심재호;강성현
    • 한국해양학회지
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    • v.21 no.2
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    • pp.73-84
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    • 1986
  • Photometric Winkler titration provides high precision enough to use the oxygen method in moderately productive waters In short incubation (2-4hr), about $2{\mu\textrm{g}}C/\ell/h$ can be differentiated by the photometric titration. The oxygen and $^{14}C$ methods resulted in good agreement with each other in the diurnal primary production measurements. Despite small descrepancies the severe underestimation of $^{14}C-technique$ was not observed in short-term incubation. Size-fractionated production studies indicated the importance of nanoplanktonic production in the coastal water (62-88%). Bacterial respiration may lead to significant underestimation in estimating net photosynthesis in the oxygen method. In spite of some problems associated with the ecological application of antibiotics, it seems feasible to use Gentamycin in separating planktonic respiration from that of total community.

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Analysing the Effects of Regional Factors on the Regional Variation of Obesity Rates Using the Geographically Weighted Regression (공간분석을 이용한 지역별 비만율에 영향을 미치는 요인분석)

  • Kim, Da Yang;Kwak, Jin-Mi;Seo, Eun-Won;Lee, Kwang-Soo
    • Health Policy and Management
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    • v.26 no.4
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    • pp.271-278
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    • 2016
  • Background: This study purposed to analyze the relationship between regional obesity rates and regional variables. Methods: Data was collected from the Korean Statistical Information Service (KOSIS) and Community Health Survey in 2012. The units of analysis were administrative districts such as city, county, and district. The dependent variable was the age-sex adjusted regional obesity rates. The independent variables were selected to represent four aspects of regions: health behaviour factor, psychological factor, socio-economic factor, and physical environment factor. Along with the traditional ordinary least square (OLS) regression analysis model, this study applied geographically weighted regression (GWR) analysis to calculate the regression coefficients for each region. Results: The OLS results showed that there were significant differences in regional obesity rates in high-risk drinking, walking, depression, and financial independence. The GWR results showed that the size of regression coefficients in independent variables was differed by regions. Conclusion: Our results can help in providing useful information for health policy makers. Regional characteristics should be considered when allocating health resources and developing health-related programs.

Change of Social Aspect Resulting from the Physical Changes of the Urban Traditional Housing (도시형 한옥주거지의 물리적 변화에 따른 사회적 특성변화)

  • Lee Seung-Yeob
    • Journal of the Korean housing association
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    • v.17 no.2
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    • pp.117-124
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    • 2006
  • Korean urban traditional housing abandoned by the social apathy promptly disappearing form our sight, or ruining. It tells that the strategies we are using today are impossible to fulfill socio-economic needs of residents here. So it needed to find out the strategies which can change this place better to live in. Consolidating the street parking lots fer cars can be one of the important solutions to the area. By using cul-de-sac, after setting up small unit of communities, we will have chance to have a small public space, and at the same time it can help to set up our tradition of people's intimacy inside the community. Most people have their own cars, and the need of parking lots becomes more serious. So, a meeting place like public well in the past must replace parking lots. On the other hand, it is important to re-consolidate existing land to obtain appropriate land size for other uses. Today, the use of private space (house, private lots, etc..)and public space(streets, local offices) is very important. NIMBY (Not In My Back Yard) attitude should also be reconsidered. All these negative social aspects come from negative social relationship, thus we should consider them with care and deep understandings. The traditional housing of Korea should not be abandoned as slum, but this should be transformed in terms of the conservation since it is superior in its ecological and energy conservation aspect.

A study on a draft of master plan of Eco-Village and status of the village - Based on Ansolgi Village (생태마을 초기계획과 마을현황에 대한 비교 연구 - 안솔기마을을 중심으로)

  • Song, Jeong-Seok;Yun, Young-Il;Lee, Hyo-Won
    • KIEAE Journal
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    • v.8 no.1
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    • pp.3-10
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    • 2008
  • Eco-village adopted its basis on continual notion as one of the alternative dwelling models in the dwelling sector and it suggests a dwelling pattern of modern society. Ansolgi village was organized in 2000 as an intended Eco-village for the first time in Korea and after 8 years, the village seems different to that of the earlier period. The cause of the difference can be originated from changes of planning strategies and notion of life. The village is different from its original design due to lack of space resorted from installation of many facility and overall layout of the village. The different look of the village can be categorized in 4 types; village layout, community facility, Eco-based facility and hydro circulation. Therefore, the purpose of this paper is to suggest actual data about Eco-village establishment plan by performing a comparison analysis on the current status and the initial design on the basis of the intended Ansolgi village, the village that had been organized 8 years ago.

Species Composition and Biomass of Intertidal Seaweeds in Chuja Island (추자도 조간대 해조류의 종조성과 생물량)

  • Kim, Myung-Sook;Kim, Mi-Ryang;Chung, Mi-Hee;Kim, Jeong-Ha;Chung, Ik-Kyo
    • ALGAE
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    • v.23 no.4
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    • pp.301-310
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    • 2008
  • The marine benthic algal flora and biomass of Chuja Island, southern coast of Korea, was investigated. The collections of intertidal marine algae were made at two sites, Yecho of Hachujado and Hupo of Sangchujado, from October 2006 to July 2007. A total of 162 species, including 15 green, 47 brown and 100 red algae, were identified in this study. The occurrence of species according to season was abundant during spring to summer and less in autumn. The vertical distribution of intertidal zone in Chujado was characterized by Gloiopeltis spp., Myelophycus simplex, Ishige okamurae, Chondrus ocellatus, Grateloupia elliptica, Hizikia fusiformis and Sargassum spp. The average biomass of macroalgae was measured as 400 g wet wt m$^{-2}$. The dominant species based on the biomass were Sargassum yezoense, S. coreanum and Hizikia fusiformis. ESG II (ecological state group) as an opportunistic species, including sheet form, filamentous form, and coarsely branched form, occurred 85.8% in the intertidal seaweeds. These results provide a baseline for future monitoring studies in the Chuja Island.

Effects of low-head dam removal on benthic macroinvertebrate communities in a Korean stream

  • Kil, Hye-Kyung;Bae, Yeon-Jae
    • Animal cells and systems
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    • v.16 no.1
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    • pp.69-76
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    • 2012
  • This study was conducted to examine how a low-head dam removal (partial removal) could affect benthic macroinvertebrate communities in a stream. Benthic macroinvertebrates and substrates were seasonally sampled before and after dam removal (March 2006-April 2007). Benthic macroinvertebrates and substrates were quantitatively sampled from immediately upstream (upper: pool) and downstream (lower: riffle) sites, the location of the dam itself (middle), and immediately above the impoundment (control: riffle). After the removal, species richness and density of benthic macroinvertebrates as well as the EPT group (Ephemeroptera, Plecoptera and Trichoptera) increased to higher levels than those before the removal, while functional feeding groups and habitat orientation groups changed more heterogeneously at the upper site. At the lower site, species richness and density decreased somewhat immediately after dam removal, which was associated with an increase of silt and sand, but recovered after monsoon floods which helped to enhance substrate diversity at the upper site. Decreased dominance index and increased diversity index in both the upper and lower sites are evidence of positive effects from the dam removal. In conclusion, we suggest that even a partial removal of a dam, resulting in increased substrate diversity in the upper site, could sufficiently help rehabilitate lost ecological integrity of streams without major habitat changes.

Distribution and Ecological Characteristics of Native Rubus coreanus in Korea (한국에서의 자생 복분자딸기 분포 및 자생지의 생태적 특성)

  • Ahn, Young-Hee;Kim, Young-Hwa
    • Korean Journal of Environment and Ecology
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    • v.21 no.2
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    • pp.176-185
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    • 2007
  • This study investigated native Rubus coreanus community in Korea(Ulleung island and Jeju island excepted). The quadrates were located in the middle of the native Rubus coreanus habitats. As the result of the research, the patter of native habitats were found to be divided into mountain roadsides, second-transition rents, severely damaged rents in the mountain, strictly protected regions, and environmentally harsh regions. The research revealed 218 taxa in total, in which 71 families, 165 genera, 18 varieties,1 forma and 199 species were checked in the flora of the native Rubu coreanus habitats. In this flora, the perennial plants appeared in as much as 80.74% proportion and appearance-frequency of the compositae was highest, accounting for 7.80%.

Theme Trail District Planning for the Regional Activation -Case study on project of Trail construction each of the government agencies- (지역 활성화를 위한 테마길 조성 방안 -부처별 길 만들기 사업을 중심으로-)

  • Kim, Sang-Bum;Choi, Ja-Un;Jeong, Dae-Young;Kim, Eun-Ja
    • Journal of Agricultural Extension & Community Development
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    • v.17 no.3
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    • pp.587-606
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    • 2010
  • Theme trail construction should be changed from existing form which connects line to line, or point to line. It should be developed into area form. The project of Trail construction must be converted in area form. The aggregate of the points which is a base element of walk is a line, and the harmonious connection of various line is the area. The close relationship with points and lines is important to operate the project of trail construction in area form effectively. Subject of the project of Theme trail construction of area form must become the village residents which are being contiguous in trail. They must operate management and about trail. The project of Trail construction of area form the plan making is established and if the subjects which, will operate and manage that place are decided upon according to theme must construct the trail of the wide area concept which connects the trail of that trail and neighborhood. If becomes like that local resident and the citizen will be able to coexist with mediation of Trail. If the project of Trail construction of village resident leading is propelled applying rural amenity resources in a way, the trail model which one phases advances could be presented for ecological, economical and cultural.