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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.2, 2003³â, pp.34-139
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| ÃÖ±¤Çö;Ȳ¼øÁø;±èÈ£¼·;ÇѸí¼ö; °Ç±¹´ëÇб³;°Ç±¹´ëÇб³;°Ç±¹´ëÇб³;ÇѾç´ëÇб³;
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| ÆÈ´çÈ£ ½Ä¹°ÇöûũſÀÇ Á¦ÇÑ¿µ¾ç¿°°ú »ý¸®ÇÐÀû ¼ºÀå Æ¯¼ºÀ» Æò°¡Çϱâ À§ÇÏ¿© 2002³â 3¿ùºÎÅÍ 10¿ù±îÁö ÆÈ´çÈ£ÀÇ ¼öÁúȯ°æ Á¶»ç¿Í ÇÔ²² ½Ç³» ¹è¾ç½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ÃÑÀÎÀÇ ³óµµ¿Í Chl. ¥áÀÇ »ó°ü¼º ºÐ¼®°á°ú, ÆÈ´çÈ£ÀÇ È£¼ö»ý»ê¼ºÀº ÀÎÀÇ ¿µÇâÀ» ¸¹ÀÌ ¹ÞÀ¸¸ç TN/TP ratio¿Í ½Ä¹°ÇöûũſÀÇ ¼ºÀåÀáÀç·Â ½ÇÇèÀ» ÅëÇØ¼µµ Á¦ÇÑ¿µ¾ç¿°Àº ÀÎÀ¸·Î Æò°¡µÇ¾ú´Ù. ƯÈ÷, º½Ã¶ÀÌ ´Ù¸¥ °èÀý¿¡ ºñÇØ »ó´ëÀûÀ¸·Î ¿ëÁ¸¹«±âÀÎÀÌ ³·Àº ³óµµ·Î Á¸ÀçÇϱ⠶§¹®¿¡ ³ôÀº ÀÎ Á¦ÇÑÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ±×·¯³ª ÀÎÀÇ Á¦ÇÑÁ¤µµ´Â °èÀýÀûÀÎ º¯À̸¦ ³ªÅ¸³»¾úÀ¸¸ç, ½Ã±â¿¡ µû¶ó Áú¼Ò¿Í ±Ô¼Ò¿¡ ÀÇÇÑ Á¦ÇѰ¡´É¼ºµµ ³ªÅ¸³µ´Ù. ÆÈ´çÈ£ ½Ä¹°Çöûũſ ±ºÁýÀÇ Ãִ뼺Àå·ü(¥ì$_{max}$)Àº 0.8~1.1 $day^{-1}$ÀÇ ¹üÀ§·Î ³ªÅ¸³µÀ¸¸ç, ¹ÝÆ÷ȳóµµ($K_u$´Â 0.1~0.8¥ìM·Î 5¿ù¿¡ 0.8¥ìM·Î °¡Àå ³ô°í 9¿ù¿¡ 0.1¥ìM·Î °¡Àå ³·Àº °ÍÀ¸·Î Á¶»çµÇ¾ú´Ù. ÀÌ´Â ¿µ¾ç¿° Èí¼ö¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ÀÎÀÇ cell quota¿Í °ü·ÃÀÌ ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, 5¿ù¿¡ 0.13§¶ P/§¶ Chl. ¥á·Î ³·Àº °ªÀ» ³ªÅ¸³Â´Ù. ½Ä¹°ÇöûũſÀÇ ¼ºÀ寝¼º ºÐ¼®À» ÅëÇØ ÆÈ´çÈ£¿¡¼´Â º½¿¡ ºñÇØ ¿©¸§°ú °¡À»Ã¶¿¡ ¹ß»ýÇÑ ½Ä¹°ÇöûũſÀÇ ¼ºÀåÀÌ °æÀïÀûÀ¸·Î ºü¸£°Ô ¹ß´ÞÇÒ ¼ö ÀÖ´Â ÀáÀ缺ÀÌ ÀÖ´Â °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. °á°úÀûÀ¸·Î, ÆÈ´çÈ£ ½Ä¹°Çöûũſ ¼ºÀåÀº ÁÖ·Î Àο¡ ÀÇÇÏ¿© Á¦ÇÑµÇ¸ç ¿©¸§ ¸ó¼ø ÀÌÈÄ ¼öüÀÇ ¾ÈÁ¤±âµ¿¾È ³ôÀº ¼ºÀåÀ» ÇÒ ¼ö ÀÖ´Â »ý¸®Àû Ư¼ºÀ» °¡Áö°í ÀÖ´Â °ÍÀ¸·Î ÃßÁ¤µÈ´Ù. |
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| This study was conducted to determine limiting nutrients and the physiological characteristics of phytoplankton in response of nutrients in Lake Paldang from March 2002 to October 2002. A field research was conducted along with laboratory batch culture experiment to find the limiting nutrients and the growth kinetics. According to the results of Chl. ¥á-TP relationship, TN/TP ratio, and nutrient addition bioassay, phosphorus appeared to be a major limiting nutrient in Lake Paldang and thus the lake productivity was greatly influenced by it. P limitation for the phytoplankton of Lake Paldang varied with season, and the possibility of limitation by nitrogen and silica also occurred. The degree of P limitation was greatest during spring when the concentration of dissolved phosphorus is relatively much lower than summer and autumn. The maximum growth rate $(¥ì_{max})$ and half saturation concentration ($K_u$) of Lake Paldang phytoplankton ranged from 0.8~1.1 $day ^{-1}$ and from 0.1~0.8 ¥ìM, respectively. $K_u$ was highest during May (0.8 ¥ìM) and the lowest during September (0.1 ¥ìM). Such result may be induced by the phytoplankton cell quota that showed the lowest concentration (0.13 ¥ìgP/¥ìgChl. ¥á) during May. The growth kinetics showed that phytoplankton growth in Lake Paldang was faster during summer and autumn than spring, suggesting that the potential of algal bloom is high after the summer monsoon season. |
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| Ű¿öµå |
| Phytoplankton;Limiting nutrient;Phosphorus;Growth kinetics;Maximum growth rate($¥ì_{max})$;Half saturation concentration($K_u$);Lake Paldang; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.2, 2003³â, pp.34-139
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200310103436341)
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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