This study was conducted to elucidate the structure of river ecosystem in the watershed of the Seom River and Hoengseong Reservoir located in Hoengseong of Kangwon Province from February to October 2007. Topics of the survey were mainly rainfall, discharge, water quality in abiotic factors and attached algae, benthic macroinvertebrates, fish, birds and mammals of flora and fauna in a biotic factors, respectively. Specifically, the Seom River could be seen as a typical flow rate of the stream is controlled to the effect of the dam. Basic water qualities were great to seasonal effects, it was relatively clean. Diatom Achnanthes, Cymbella, Gomphonema, and Navicula were distributed predominantly in the periphytic algae. Benthic macroinvertebrates were mostly aquatic insects and freshwater shellfish, the aquatic insects were abundant Ephemeroptera and Trichoptera. Freshwater fish was the dominant Zacco platypus, fish species varied toward the downstream. Birds were mainly observed in four species, and species Egretta garzetta, which was distributed in a wide area of the Seom River. In mammals, Lutra lutra of Mustelidae was identified that the number of inhabit widely. In aspects of the ecological trophic level, the Seom River was maintained at a relatively stable state in the producer and the consumer relationship. The results of this study will expected to be utilized as a useful data for understanding the structure and function of the lotic and lentic ecosystems.
게임콘텐츠는 다양한 개발·제작자·퍼블리셔·유통·소비 및 이용에 이르는 가치사슬을 가지고 있는 분야이다. 이러한 가치사슬 안에는 게임콘텐츠 생태계를 구성하는 다양한 개체의 구성 요소들이 포함되어 있고 이들 간의 조화로운 상생 관계의 모색이 중요한 이슈가 되고 있다. 본 연구에서는 생태계와 인문사회과학의 분야에서 연구되어 온 생태계 모델을 통해 게임콘텐츠 생태계를 구성하고 있는 개체 요소와 각 개체들 간의 상호 작용 및 전체 게임 콘텐츠 생태계의 발전 방향을 FGI 분석을 통해 제시하였다. 본 구조 분석에서는 게임을 구성하는 생태계를 관련기술과 연계하여 분석하고 각 생태계 구성요소별 경쟁력 및 시사점을 도출하였다. 이를 통해 국내외 게임 콘텐츠 산업 경쟁력 강화를 위해 연구개발, 인력양성, 기반구축 및 제도개선 측면에서 정책방향을 제시함으로써 미래 게임 콘텐츠 산업의 경쟁력 강화를 통한 게임 산업 활성화를 위해서 정부, 학계, 산업계 등의 연구기관이 추진해야 할 정책을 수립하는 데 있어 방향을 제시하였다.
2010년 2월부터 12월까지 상수원 호소인 가창호에 대한 수질 및 생물상을 조사하였다. 가창호 유역내 총 BOD 발생부하량은 생활계가 53%로 가장 많이 차지하였으며 토지계(27%), 축산계(16%) 순으로 나타났다. 가창호 유역내 총 TN, TP 발생부하량은 토지계가 각각 59%, 42%로 가장 많이 차지하였다. 가창호 유역내 총 BOD 배출부하량은 토지계가 61%의 높은 비율을 나타내었고 생활계(24%), 산업계(11%) 순으로 나타났다. TN,
This study was carried out to elucidate the relation between water quality and structure of the aquatic ecosystem in the agriculture reservoir Otae-ji from January to December in 2009. The proportion of forest was 46.98%, which means that non-point sources are major contributor of water pollution in this area. The annual mean COD(Chemical Oxygen Demand) in Otae-ji was 3.6 ㎎ L -1 , indicating, level Ⅱ of environmental standards and the trophic state was mesotrophic. Although total phosporus concentration in the reservoir was high in August due to large inflow of nutrients from outside the reservoir during monsoon season, there was no break out of significant algal bloom in the summer. The seasonal succession of phytoplankton showed that the dinophyta dominated in the the spring, chlorophyta in the summer, chrysophyta and chlorophyta in the autumn and chrysophyta in the winter. In case of zooplankton, rotifers dominated in the most seasons, but cladoceran(Bosmina longirostris) dominated in June and copepod(Nauplii) in August. The macrophyte plants showed diverse species compositon consisted of 3 varieties, 24 species, 23 genera, 15 families and 14 orders. The macroinvertebrates also showed various FFG(Functional Feeding Groups) such as GC(Gathering-Collector), P(Predator), SH(Shedder), FC(Filter-Collector) and PP(Plant-Piercer). Ecosystem stability analysis using aquatic insects was classified as Group Ⅰ, which has high resilience and resistance indices. A total of 14 species of fish was collected but exotic species such as Lepomis macrochirus and Micropterus salmoides were not found in Otae-ji. In conclusion, the preservation of healthy food wed in the reservoir ecosystem is closely related to water quality management as well as effective prevention of algal bloom by helping good material circulation in aquatic ecosystems.