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Choi, Jong-Yun,Jeong, Kwang-Seuk,Lee, Eunkyu,Choi, Kee-Ryong,Joo, Gea-Jae The Ecological Society of Korea 2014 Journal of Ecology and Environment Vol.37 No.3
Structural heterogeneity results in different spatial distributions of microcrustaceans. Thus, in ecosystems with excessive macrophyte development, it may be difficult to determine the microcrustacean species composition. Given the importance of microcrustaceans in the food web, the elucidation of microcrustacean diversity is essential. In vegetated habitats, bluegill sunfish can prey on microcrustaceans, and therefore have a potential role as microcrustacean monitoring agents. In the present study, we compared microcrustacean species compositions in the field with those in the guts of bluegill, in Jangcheok Lake, South Korea. Our results showed that the number of microcrustacean species was higher in bluegill guts than in the field. Further, microcrustacean species, such as Daphnia galeata, Graptoleveris testudinaria, Leydigia leydigii, Rhynchotalona sp., and Simocephalus exponisus, were found only in bluegill guts. Our findings verify the validity of the fish gut analysis to monitor microcrustacean species compositions and to clarify spatial distributions of microcrustacean species in structurally heterogeneous ecosystems with excessive macrophyte development.
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도윤호(Yun Ho Do),김성보(Seong Bo Kim),주기재(Joo Gea Jae),최기룡(Kee Ryong Choi) 한국지역지리학회 2013 한국지역지리학회지 Vol.19 No.3
식물 계절현상을 이용한 축제는 생태계서비스의 한 형태로서 생태계와 인간이 문화적 요소를 통해 서로 상호작용을 하는 예이다. 봄철 식물의 계절현상을 이용한 대표적인 축제는 창원시 진해 군항제가 있다. 본 연구에서는 1987 년부터 2013년까지의 벚나무의 계절학적 자료와 군항제 개최시기 및 방문자수를 조사하여 식물계절학과 지역축제와 의 상관관계를 파악하였다. 또한 행사기간 중 기상조건 (평균기온, 최저·최고기온, 강수량, 강수일수)과 행사시기특성(년도, 휴일수-토, 일요일 수, 행사기간일수, 행사시작일-개화일 차이)을 파악하여 군항제 방문객수에 영향을 미치는 환경요인을 찾기 위해 노력하였다. 시계열분석 결과 지난 26년 동안 벚나무의 발아일과 개화일의 주기성을 보이지 않 거나 나타나더라도 통계적으로 유의하지 않았다. 방문객의 수에 영향을 미치는 주요인으로는 기온, 일자(day), 강수요 인이 추출되었다. 군항제기간의 기온이 방문객수에 영향을 미치는 것으로 나타났으나, 벚나무의 개화시기와 행사기간 이 불일치하더라도 방문객 수의 차이는 없었다. 따라서 확실성이 떨어지는 개화시기를 맞춰 축제기간을 설정하기 보 다는 행사기간을 고정하고 일부 유동적으로 실시할 수 있는 행사프로그램을 개발하고 실시하는 것이 군항제의 성공적인 운영에 도움을 줄 수 있을 것으로 보인다. Festivals using plant phenology is one of the examples can represent the ecosystem services. Changwon Jinhae Gunhangje is typical spring festival using cherry blossoms phenology. This research was done to define relationship between flowering of cherry blossoms and Gunhangje. Phenological data (Julian day) of cherry blossoms and visitor number of Gunhangje from 1987 to 2013 were collected. Differences of Phenological phase of cherry blossoms and duration of Gunhangje was analyzed. Trend analysis was performed to know changes of flowering and budding day of cherry blossoms. Correlations between visitor number of Gunhangje and environmental factors was defined by factor analysis and regression analysis. Results are showed that during the 26 years, periodicity of flowering and budding day was not identified or even identified it was not significant. Environmental factors effect on visitor numbers of Gunhangje were defined as temperature factor, day factor, and precipitation factor. Temperature factor was significantly correlated with visitor numbers of Gunhangje. Though Flowering day of cherry blossoms and festival duration was not matched, however, difference of visitor numbers was not showed. These results suggest that fixed duration of Gunhangje would be more effective to visitors than changing the festival duration following the phenological day changes of cherry blossoms.
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Preventing Strategy of External Disturbances of Glass Furnace
Jin-Hyung Cho,Tae-Wook Jung,Dae-Jin Lee,Kwang-Bum Lee,Yong-Yeon Kim,Gea-ryong Kim 한국산업경영시스템학회 2002 한국산업경영시스템학회 학술대회 Vol.2002 No.추계
In this study, first, we show that the furnace process which requires maintaining high temperature is effected grievously by the temperature of surrounding air. Second, an alternative which maintains the relatively constant temperature dispersion surrounding the furnace and at the same time has economical advantages will be proposed.
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지방자치단체 자연상징물(새, 꽃, 나무)의 다양성과 분포: 생물다양성의 인식도 평가
도윤호 ( Yun Ho Do ),김지윤 ( Ji Yoon Kim ),임란영 ( Ran Young Im ),최기룡 ( Gi Ryong Choi ),주기재 ( Gea Jae Joo ) 한국하천호수학회 2013 생태와 환경 Vol.46 No.3
We identified the diversity, geographical distribution, ecological characteristics of birds, trees, and flowers species designated as local government symbols as a means for understanding public awareness on biodiversity. A total of 114 species including 48 birds, 40 flowers, 36 tree species belonging to 40 orders 59 families 90 genus were designated as natural symbols. Pica pica (L.) in birds, Rhododendron schlippenbachii Maxim. among flowers, have also been designated as symbols. The tree Ginkgo biloba L. was designated with the highest frequency. Local governments located coastal area were selected bird species of the Laridae family and the tree species Camellia japonica L., of Pinaceae as their natural symbols. In contrast, local governments located inland have designated resident bird species such as P. pica and Columba rupestris (Pallas) and flower species from the Ericaceae as natural symbols widely distributed and easily observed throughout South Korea. However, many local governments have designated the same species as a natural symbol based on their size color and public appeal and popularity. The information about the popular species and their ecological traits are useful for establishing the criteria as flagship or iconic species selection and their roles in habitat conservation.
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