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다국어 초록 (Multilingual Abstract)

In order to understand the contribution of seaweed aquaculture to nutrients and carbon cycles in coastal environments, we measured the nutrients & carbon uptake rates of Porphyra yezoensis Ueda sampled at Nakdong-River Estuary using a chamber incubation method from November 2011 to April 2012. It was observed that the production rate of dissolved oxygen by P. yezoensis (n=30~40) was about 68.8±46.0 μmol gFW -1 h-1 and uptake rate of nitrate, phosphate anddissolved inorganic carbon (DIC) was found to be 2.5±1.8 μmol gFW -1 h-1, 0.18±0.11 μmol gFW -1 h-1 and 87.1±57.3 μmol gFW -1 h-1, respectively. There was a positive linear correlation existed between the production rate of dissolved oxygen and the consumption rates of nitrate, phosphate and DIC, respectively, suggesting that these factors may serve as good indicators of P. yezoensis photosynthesis. Further, there was a negative logarithmic relationship between fresh weight of thallus and uptake rates of nutrients and CO2, which suggested that younger specimens (0.1~0.3 g) were much more efficient at nutrients and CO2 uptake than old specimens. It means that the early culturing stage than harvesting season might have more possibilities to be developed chlorosis by high rates of nitrogen uptake. However, N & C demanding rates of Busan and Jeollabuk-do, calculated by monthly mass production and culturing area, were much higher than those of Jeollanam-do, the highest harvesting area in Korea. Chlorosis events at Jeollabuk-do recently might have developed by the reason that heavily culture in narrow area and insufficient nutrients in maximum yield season (Dec.~Jan.) due mostly to shortage of land discharge and weak water circulation. The annual DIC uptake by P. yezoensis in Nakdong-River Estuary was estimated about 5.6×103 CO2 ton, which was about 0.03% of annual carbon dioxide emission of Busan City. Taken together, we suggest more research would be helpful to gain deep insight to evaluate the roles of seaweed aquacul-ture to the coastal nutrients cycles and global carbon cycle.

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참고문헌 (Reference)

1 심정희, "미역 (Undaria pinnatifida)의 생장에 따른 영양염과 CO2 흡수율 변화" 한국수산과학회 43 (43): 679-686, 2010

2 황재란, "다시마(Saccharina japonica)의 생장에 따른 영양염 및 CO_2 흡수율과 광합성 특성 변화" 한국해양학회 16 (16): 196-205, 2011

3 김정배, "남서해역에서 양식되는 방사무늬김(Porphyra yezoensis Ueda)의 색소조성과 농도에 영향을 미치는 해양환경 특성" 한국환경생물학회 30 (30): 200-209, 2012

4 권정노, "낙동강 하구 해양환경 및 기상 요인이 김P(orphyra yezoensis)생산량 변화에 미치는 영향" 한국수산과학회 46 (46): 868-877, 2013

5 Tada K, "Water quality and nori (Porphyra) culture in the Seto Inland Sea." 59 : 945-955, 2010

6 Tyler AC, "Uptake and release of nitrogen by the macoralgae Gracilaria vermiculophylla (Rhodophyta)" 42 : 515-525, 2006

7 DeBoer JA, "The Biology of seaweeds" Blackwell 356-391, 1981

8 NFRDI, "Summary of the 2012 Projects (Part. 4. User-oriented researches)" 460-468, 2012

9 Lobban CS, "Seaweed ecology and physiology" Cambridge University Press 163-209, 1994

10 Hori Y, "Relationship between the discoloration of cultivated Porphyra thalii and long-term changes of the environmental factors in the northern part of Harima-Nada, eastern Seto Inland Sea, Japan" 72 : 107-112, 2008