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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.3, 2008³â, pp.412-421
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( Nutrient Limitation of Phytoplankton in the Dongbok Lake: Analyses of Long-term data and Bioassay Experiments )
Á¤º´°ü;½Å¿ë½Ä;Àå³²ÀÍ;±è»óµ·; Æ÷ÇØ¾ç´ëÇб³ ÇØ¾ç½Ã½ºÅÛ°øÇкÎ;Æ÷ÇØ¾ç´ëÇб³ ÇØ¾ç½Ã½ºÅÛ°øÇкÎ;±¹¸³È¯°æ¿¬±¸¿ø ¿µ»ê°­¹°È¯°æ¿¬±¸¼Ò;±¹¸³È¯°æ¿¬±¸¿ø ¿µ»ê°­¹°È¯°æ¿¬±¸¼Ò;
 
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µ¿º¹È£ÀÇ ½Ä¹°Çöûũſ ¼ºÀåÀ» Á¦ÇÑÇÏ´Â ¿µ¾ç¿°À» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ±âÁ¸ÀÚ·á ºÐ¼®°ú °èÀýº° ¿µ¾ç¿° ÷°¡ ¹è¾ç ½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. Àå±â°£ ÀڷḦ ºÐ¼®ÇÑ °á°ú, TN°ú TP´Â °­¿ì¿Í À¯ÀÇÇÑ »ó°ü¼ºÀ» º¸¿´Áö¸¸ DIN, DIP´Â °­¿ì¿Í À¯ÀÇÇÑ »ó°ü¼ºÀ» ³ªÅ¸³»Áö ¾Ê¾Ò´Ù. TN/TP¿Í DIN/DIP´Â 16 ÀÌ»óÀÇ °á°ú¸¦ ³ªÅ¸³¿À¸·Î¼­ Àλ꿰¿¡ ÀÇÇÏ¿© ½Ä¹°ÇöûũſÀÇ ¼ºÀåÀÌ ÀáÀçÀûÀ¸·Î Á¦ÇÑµÉ ¼ö ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. ¿µ¾ç¿° ÷°¡ ¹è¾ç ½ÇÇèÀ» ¼öÇàÇÑ °á°ú, ¸ðµç °èÀý¿¡¼­ Ŭ·Î·ÎÇÊ a°¡ Àλ꿰 ÷°¡±º¿¡ ¹ÝÀÀÀ» ³ªÅ¸³»¾úÁö¸¸ ¾Ï¸ð´Ï¾Æ, Áú»ê, ±Ô»ê¿°°ú °°Àº ¿µ¾ç¿°¿¡ ´ëÇØ¼­´Â Å©°Ô ¹ÝÀÀÇÏÁö ¾Ê¾Ò´Ù. ¶ÇÇÑ Å©±â¿¡ µû¸¥(net and nano size) ½Ä¹°ÇöûũſÀÇ ¹ÝÀÀ ¿ª½Ã Àλ꿰¿¡¼­ ¹ÝÀÀÀ» ³ªÅ¸³¿À¸·Î¼­ Àλ꿰ÀÌ ½Ä¹°ÇöûũſÀÇ ¼ºÀåÀ» Á¦ÇÑÇÏ´Â ¿µ¾ç¿°ÀÓÀ» °ËÁ¤ÇÏ¿´´Ù. °¡À»Ã¶ ¹è¾ç½ÇÇè¿¡¼­ ¹è¾ç Àü°ú ¹è¾ç ÈÄ Àλ꿰 ÷°¡±ºÀÇ ¿ìÁ¡Á¾ º¯È­¸¦ º¸¸é, ¹è¾ç Àü¿¡´Â ÀϺΠÀ¯±Û·¹³ª·ù°¡ ¿ìÁ¡À» ³ªÅ¸³»¾úÁö¸¸, ¹è¾ç ÈÄ Àλ꿰 ÷°¡±º¿¡¼­´Â ±ÔÁ¶·ùÀÇ ¿ìÁ¡À» ³ªÅ¸³»¾ú´Ù.
Nutrient limitation was examined for the Dongbak Lake based on bioassay experiments and analyses of long-term monitoring data. From the results of data analyses, molar ratios of TN/TP and DIN/DIP were higher than 16 : 1 suggesting that phytoplankton growth was potentially limited by phosphorus. Phytoplankton responded to the addition of phosphates in the incubation experiments for all seasons whereas phytoplankton did not respond to other nutrients such as ammonia, nitrate and silicates. Size fraction (net and nano size) of phytoplankton also responded to the addition of phosphorus indicating that phytoplankton growth was limited by phosphorus in the Dongbok Lake. There was also a taxonomic shift from euglenophyceae to bacillariophyceae after addition of phosphate during warm season especially.
 
Ű¿öµå
Dongbok lake;Redfield ratio;bioassay experiment;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.3, 2008³â, pp.412-421
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200833338919354)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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