낙동강 하구 해양환경 및 기상 요인이 김P(orphyra yezoensis)생산량 변화에 미치는 영향
Effects of Meteorological and Oceanographic Properties on Variability of Laver Production at Nakdong River Estuary, South Coast of Korea
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초록
To understand the effects of marine environmental and meteorological parameters on laver Porphyra yezoensis production at Nakdong River Estuary, we analyzed marine environmental (water temperature, salinity, nutrients, etc.) and meteorological properties (air temperature, wind speed, precipitation, sunshine hours) with yearly and monthly variations in laver production over 10 years (2003-2013). Air and water temperature, wind speed, sunshine hours and precipitation were major factors affecting yearly variability in laver production at the Nakdong River Estuary. Lower air and water temperatures together with higher levels of nutrients and sunshine and stronger wind speeds resulted in higher laver harvests. Salinity and nitrogen did not show clear correlations with laver production, mainly due to the plentiful supply of nitrogen from river discharge and the low frequency of environmental measurements,which resulted in low statistical confidence. However, environmental factors affecting monthly laver production were related to the life cycle (culturing stage) of Porphyra yezoensis and were somewhat different from factors affecting annual laver production. In November, a young laver needs lower water temperatures for rapid growth, while a mature laver needs much stronger winds and more sunshine, as well as lower temperatures for massive production and effective photosynthesis, mostly in December and January. However, in spring (March), more stable environments with fewer fluctuations in air temperature are needed to sustain the production of newly deployed culture-nets (2nd time culture). These results indicate that rapid changes in weather and marine environments caused by global climate change will negatively affect laver production and, thus, to sustain the yield of and predict future variability in laver production at the Nakdong River estuary, environmental variation around laver culturing farms needs to be monitored with high resolution in space and time.
Abstract
To understand the effects of marine environmental and meteorological parameters on laver Porphyra yezoensis production at Nakdong River Estuary, we analyzed marine environmental (water temperature, salinity, nutrients, etc.) and meteorological properties (air temperature, wind speed, precipitation, sunshine hours) with yearly and monthly variations in laver production over 10 years (2003-2013). Air and water temperature, wind speed, sunshine hours and precipitation were major factors affecting yearly variability in laver production at the Nakdong River Estuary. Lower air and water temperatures together with higher levels of nutrients and sunshine and stronger wind speeds resulted in higher laver harvests. Salinity and nitrogen did not show clear correlations with laver production, mainly due to the plentiful supply of nitrogen from river discharge and the low frequency of environmental measurements,which resulted in low statistical confidence. However, environmental factors affecting monthly laver production were related to the life cycle (culturing stage) of Porphyra yezoensis and were somewhat different from factors affecting annual laver production. In November, a young laver needs lower water temperatures for rapid growth, while a mature laver needs much stronger winds and more sunshine, as well as lower temperatures for massive production and effective photosynthesis, mostly in December and January. However, in spring (March), more stable environments with fewer fluctuations in air temperature are needed to sustain the production of newly deployed culture-nets (2nd time culture). These results indicate that rapid changes in weather and marine environments caused by global climate change will negatively affect laver production and, thus, to sustain the yield of and predict future variability in laver production at the Nakdong River estuary, environmental variation around laver culturing farms needs to be monitored with high resolution in space and time.
참고문헌 (23)
- Bae S-H, "The origin and development process of laver culture industry in Korea 1. Laver culture history till the end of Chosun dynasty", Bull Korean Fish Soc, 24, pp.153~166 (1991)
- 조홍연, "관측간격에 따른 COD 오염부하 추정오차 분석", 한국해안·해양공학회논문집, 19(3), pp.266~273 (2007), 한국해안,해양공학회
- Choe S, "Nutrients and suspended organic particulates in the Estuary of Nak-Dong River", The Journal of the Oceanological Society of Korea, 7, pp.1~14 (1972)
- Hong J-S, "Oceanographic conditions in relation to laver production in Kwangyang Bay, Korea", Bull Korean Fish Soc, 20, pp.237~247 (1987)
- Hwang MS, "Temperature responses of Porphyra tenera Kjellman and P. yezoensis Ueda (Bangiales, Rhodophyta) from Korea from Korea", Algae, 12, pp.207~213 (1997)
- 황미숙, "한국산 김속(Porphyra) 식물의 식별형질 분석 및 수리분류학적 연구", ALGAE, 17(4), pp.217~233 (2002), 한국조류학회I
- Hwang MS, "Two species of Porphyra (Bangiales, Rhodophyta), P. koreana sp. Nov. and P. lacerate Miura from Korea", The Korean Journal of Phycology, 9, pp.169~177 (1994)
- Jang GN, "Aquaculture of Seaweeds (macro algae) and Crustacean", pp.153~190 (2002), Sam-Gwang Press
- 장성태, "낙동강 하구에서의 해양 환경 변화", 바다, 11(1), pp.11~20 (2006), 한국해양학회
- 정석근, "Spatial variability in long-term changes of climate and oceanographic conditions in Korea", JOURNAL OF ENVIRONMENTAL BIOLOGY, 29, pp.519~529 (2008), TRIVENI ENTERPRISES
- Kang JW, "Diseases of the cultivated porphyra at culture beds with special reference to the effects of fertilizer plant effluents", Bull Korean Fish Soc, 5, pp.39~44 (1972)
- 김백운, "낙동강 하구 신자도 해빈 퇴적물 입도의 시간적인 변화", 한국해안·해양공학회논문집, 23(4), pp.304~312 (2011), 한국해안,해양공학회
- 김성중, "지난 130년 간 한반도 근해의 표층 수온 변화 경향", Ocean and Polar Research, 33(3), pp.281~290 (2011), 한국해양과학기술원
- KMA, "How to use regional climate change information?", pp.76~81 (2011)
- MLTM, "Analytical standard methods for marine environmental parameters", 50~100 (2010)
- Moon C-H, "Studies on the environmental characteristics and phytoplankton community in the Nakdong River estuary", The Journal of the Oceanological Society of Korea, 26, pp.144~154 (1991)
- Countermeasure and research about impact on climate change of fisheries, "NFRDI", 10~51 (2012)
- One hundreds species of fisheries I, "NFRDI", 218~230 (2013)
- 옥영수, "우리나라 김 산업 발전을 위한 논점과 방안", 수산경영론집, 41(2), pp.25~44 (2010), 한국수산경영학회
- Parsons TR, "A manual of chemical and biological methods for seawater analysis", pp.173~ (1984), Pergamon Press
- Yeh SW, "Analysis of characteristics in the sea surface temperature variability in the East", Japan Sea, 2010, pp.85, 213~223
- Yoo SG, "Introduction to aquaculture", pp.309~331 (2003), Gu-Deok Press
- 윤한삼, "낙동강 하구둑 방류수에 의한 하구역 수질의 시공간적 변화", 한국해양환경•에너지학회지, 11(2), pp.78~85 (2008), 한국해양환경·에너지학회