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Although the problems of the algal blooms havebeen world-widely observed in freshwater, estuary, and marinethroughout the year, it is not yet certain what are the basic causesof such blooms. Consequently, it is very difficult to predictwhen and where algal blooms occur. The constituents of theAsian dust are in a good agreement with the elements requiredfor the algal growth, which suggests some possible relationshipbetween the algal blooms and the Asian dust. There havebeen frequently algal blooms in drinking water from rivers orlakes. However, there is no any algal blooms in upwelling waterswhere the Asian dust cannot penetrate into the soil due toits relatively weak settling velocity (size of particles, 4.5±1.5μm), which implies the possible close relationship of the Asiandust with algal blooms. The present initiative study is thus intendedfirstly in Korea to illustrate such a relationship by reviewingtypical previous studies along with 12 years of weeklyiron profiles (2001~2012) and two slant culture experimentswith the dissolved Asian dust. The result showed bacterial suspectedcolonies in the slant culture experiment that are qualitativelyin a good agreement with the recent Japanese studies.
Since the diatoms require cheap energy (8%) compared to otherphytoplankton (100%) to synthesize their cell walls by silicate,the present results can be used to predict algal blooms bydiatoms if the concentrations of iron and silicate are availableduring spring and fall. It can be postulated that the algalblooms occur only if the environmental factors such as light,nutrients, calm water surface layer, temperature, and pH are simultaneously satisfied with the requirements of the micronutrientsof mineral ions supplied by the Asian dust as enzymaticcofactors for the rapid bio-synthesis of the macromoleculesduring algal blooms. Simple eco-friendly methods toregulate the algal blooms are suggested for the initial stage ofblooming with limited area: 1) to cover up the water surfacewith black curtain and inhibit photosynthesis during the daytime, 2) to blow air (20.9%) or pure oxygen into the bottom ofthe water and inhibit rubisco for carbon uptake and nitratereductase for nitrogen uptake activities in algal growth duringthe night, 3) to eliminate the resting spores or cysts by suctionof bottom sediments as deep as 5 cm to prevent the next yeargerminations.
Although the problems of the algal blooms havebeen world-widely observed in freshwater, estuary, and marinethroughout the year, it is not yet certain what are the basic causesof such blooms. Consequently, it is very difficult to predictwhen and where algal blooms occur. The constituents of theAsian dust are in a good agreement with the elements requiredfor the algal growth, which suggests some possible relationshipbetween the algal blooms and the Asian dust. There havebeen frequently algal blooms in drinking water from rivers orlakes. However, there is no any algal blooms in upwelling waterswhere the Asian dust cannot penetrate into the soil due toits relatively weak settling velocity (size of particles, 4.5±1.5μm), which implies the possible close relationship of the Asiandust with algal blooms. The present initiative study is thus intendedfirstly in Korea to illustrate such a relationship by reviewingtypical previous studies along with 12 years of weeklyiron profiles (2001~2012) and two slant culture experimentswith the dissolved Asian dust. The result showed bacterial suspectedcolonies in the slant culture experiment that are qualitativelyin a good agreement with the recent Japanese studies.
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| (R)-케토프로펜과 (S)-케토프로펜 분리를 위한 유사 이동층 크로마토그래피의 전산모사 | 이일송, 이인수, 김인호 | pp.250-262 |
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| 전자선 조사를 이용한 볏짚의 친환경 전처리 공정 | 이병민, 이진영, 김두영, 홍성권, 강필현, 전준표 | pp.297-302 |
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| 최대전력점추적방법과 외부저항 제어 알고리즘을 이용한 미생물연료 전지의 전력생산 최대화 | 송영은, 김중래 | pp.225-231 |
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도서위치안내: 정기간행물실(524호) / 서가번호: 국내13
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