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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.1, 2004³â, pp.1-11
µ¿ÇØ¾È ¼®È£ÀÇ À°¼öÇÐÀû Á¶»ç(2): ÇâÈ£
( The Limnological Survey of a Coastal Lagoon in Korea (2): Lake Hyangho )
±Ç»ó¿ë;ÀÌÀçÀÏ;±èµ¿Áø;±è¹üö;Çã¿ì¸í; °­¿ø´ëÇб³ ȯ°æÇаú;»ïô´ëÇб³ ȯ°æ°øÇаú;¿øÁÖÁö¹æÈ¯°æÃ»;°­¿ø´ëÇб³ ȯ°æÇаú;»ïô´ëÇб³ ȯ°æ°øÇаú;
 
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ÇâÈ£ÀÇ À°¼ö»ýÅÂÇÐÀû Ư¼º¿¡ °üÇÑ Á¶»ç¸¦ 1998³â 5¿ùºÎÅÍ 2002³â 11¿ù±îÁö °Ü¿ïÀ» Á¦¿ÜÇϰí 2°³¿ù °£°ÝÀ¸·Î ½Ç½ÃÇÏ¿´´Ù. ¼ö¿Â, ¿°ºÐ, Åõ¸íµµ, ÃÑÁú¼Ò, ÃÑÀÎ, ¹× ÅðÀû¹°ÀÇ À¯±â¹°·®°ú °°Àº ¹°¸® È­ÇÐÀûÀÎ Á¶»ç¿Í ¿±·Ï¼Ò a ³óµµ, ½Ä¹°Çöûũſ ¿ìÁ¡Á¾ ¹× ¹Ðµµ º¯È­ µî°ú °°Àº »ý¹° Á¶»ç¸¦ º´Çà ÇÏ¿´´Ù. ÇâÈ£¿¡¼­ È­ÇмºÃþÀº 2 ${sim}$ 5 m ¼ö½É¿¡¼­ °üÃøµÇ¾úÀ¸¸ç, ¿ëÁ¸»ê¼Ò ³óµµ ¹× ¼ö¿ÂºÐÆ÷¿¡ ¿µÇâÀ» ÁÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¿°ºÐÀÌ ³ôÀº ¼öÃþ¿¡¼­ ¿ëÁ¸»ê¼ÒÀÇ ³óµµ°¡ ³·¾ÒÀ¸¸ç, ¼öÁ÷È¥ÇÕÀÇ Á¦ÇÑÀ¸·Î 11¿ù¿¡´Â ½ÉÃþ¿¡¼­ Ç¥Ãþº¸´Ù ¾à°£ ³ôÀº ¼ö¿Â ¿ªÀüÇö»óÀÌ °üÃøµÇ¾ú´Ù. Åõ¸íµµ´Â 0.1 ${pm}$ 0.0 ${sim}$ 0.1 m·Î ¸Å¿ì ³·Àº ¼öÁØÀÌ¿´´Ù. Ç¥Ãþ¿¡¼­ ÃÑÀÎ, ÃÑÁú¼Ò ¹× ¿±·Ï¼Ò a ³óµµ´Â °¢°¢ 0.011 ${sim}$ 0.238mgP $L^{-l}$, 0.4 ${sim}$ 2.4 mgN $L^{-l}$ ¹× 0.7 ${sim}$ 145.2 mg $m^{-3}$ÀÌ¿´´Ù. TN/TP ºñ´Â ´ëºÎºÐ 30 ÀÌÇÏ¿´À¸³ª, ÃÑÁú¼Ò¿Í ÃÑÀγ󵵴 ³ô¾Ò´Ù. ÅðÀû¹°ÀÇ ÀÔÀÚÅ©±â´Â 0 ${sim}$ 125 ${mu}m$·Î silt¿Í coarse siltÀÌ¿´´Ù. ÅðÀû¹°ÀÇ È­ÇÐÀû»ê¼Ò¿ä±¸·®, ÃÑÀÎ ¹× ÃÑÁú¼Ò´Â °¢°¢ 19.7 ${sim}$ 73.3 mg$O_2;gdw^{-1}$, 0.61 ${sim}$ l.32 mgP $gdw^{-l}$ ¹× 0.64 ${sim}$ 0.88 mgN $gdw^{-l}$ÀÇ ¹üÀ§ÀÌ¿´´Ù. ½Ä¹°ÇöûũſÀº ½Ã±â¿¡ µû¶ó Â÷ÀÌ´Â ÀÖÀ¸³ª ³ìÁ¶·ùÀÎ Ankistrodesmus falcatus, ³²Á¶·ùÀÎ Oscillatoria sp. ¹× Merismopedia tennuissima µîÀÌ ¿ìÁ¡ÇÏ¿´´Ù. ÃÑ ¼¼Æ÷¼ö´Â 560 ${sim}$ 35,255 cells $mL^{-l}$ÀÇ ¹üÀ§·Î °èÀýÀûÀ¸·Î ²ö Â÷À̸¦ º¸¿´´Ù.
The limnological characteristics of a coastal lagoon were studied in Lake Hyangho, one of a series of brackish lagoons along the eastern coast of Korea. Phytoplankton community structure, physical factors, and chemical factors were surveyed from May 1998 through November 2002 on a two-month interval basis. Temperature, salinity, Secchi disc transparency, TN, TP, organic matter content of sediment, chlorophyll a concentration, dominant phytoplankton species, and phytoplankton cell density were measured. Salinity gradient was formed between the overlying freshwater stream water and the permeated seawater at the bottom. The chemocline was persistent at the depth of 2 ${sim}$ 5 m that caused discontinuities of salinity, DO, and temperature profiles. The inversion of vertical temperature profiles with higher temperature in deeper layer was observed in early winter. Secchi disc transparency was very low with the range of 0.1 to 1.1m. TP, TN, and Chl. a concentration in the epilimnion was 0.011 ${sim}$ 0.238 mgP $L^{-l}$, 0.423 ${sim}$ 2.443 mgN $L^{-l}$, and 0.7 ${sim}$ 145.2 mg $m^{-3}$, respectively. Sediment was composed of silt and coarse silt. COD, TP, and TN content of dry sediment were 19.7 ${sim}$ 73.3 mg$O_2;g^{-1}$, 0.61 ${sim}$ 1.32 mgP $g^{-l}$ and 0.64 ${sim}$ 0.88 mgN $g^{-l}$, respectively. Dominant phytoplankton species were chlorophytes (Ankistrodesmus falcatus) and cyanobacteria (Oscillatoria sp. and Merismopedia tennuissima). The total cell density was in the range of 560 ${sim}$ 35,255 cells $mL^{-l}$.
 
Ű¿öµå
Lake Hyangho;brackish lagoon;trophic state;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.1, 2004³â, pp.1-11
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317182353)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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