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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.spc, 2008³â, pp.35-41
½Å±¸Àú¼öÁö ½Ä¹°Çöûũſ¼ºÀå¿¡ ´ëÇÑ Á¦ÇÑ ¿µ¾ç¿° ºÐ¼®
( Analysis of Algal Response Effects Using Nutrient Enrichment Bioassays in Shingu Reservoir )
ÀÌÀ翬;ÀÌ»óÀç;ÀÌÀçÈÆ;¹è´ë¿­;ÃÖÁö¿õ;Ȳ¼øÁø;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;°Ç±¹´ëÇб³ ȯ°æ°úÇаú;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;
 
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º» ¿¬±¸´Â 2006³â 6¿ù 22ÀϺÎÅÍ 28ÀϱîÁö ½Ä¹°¼º ÇöûũſÀÇ 1Â÷ »ý»ê·ÂÀ» ¾Ë¾Æº¸±â À§ÇÏ¿© ¿µ¾ç¿° ÷°¡ ½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. Æò°¡¸¦ À§ÇÑ »ùÇÃÀº Àú¼öÁö Á߾Ӻο¡¼­ ÃÑ 10L¸¦ ä¼öÇÏ¿´À¸¸ç, Cubitainer¿¡ °¢°¢ 2.5L¾¿ ºÐ¹èÇÏ¿´´Ù. ´ëÁ¶±ºÀº ¿ø¼ö¸¦ ±×´ë·Î »ç¿ëÇÏ¿´À¸¸ç, 󸮱º 1¿¡´Â $KH_2PO_4$À» ÷°¡ÇÏ¿´°í, 󸮱º 2¿¡´Â 2¹è ´õ ¸¹Àº $KH_2PO_4$À» ÷°¡ÇÏ¿© °¢°¢ P, 2P°¡ µÇµµ·Ï ÇÏ¿´´Ù. ¶ÇÇÑ Ã³¸®±º 3¿¡´Â $KNO_3$¸¦ ÷°¡ÇÏ¿© $NO_3-N$°¡ µÇµµ·Ï ÇÏ¿´À¸¸ç, 󸮱º 4¿¡´Â $KH_2PO_4$¿Í $KNO_3$À» ÷°¡ÇÏ¿© $P+NO_3-N$°¡ µÇµµ·Ï ÇÏ¿© 7ÀÏ µ¿¾È º¯È­¸¦ °üÂûÇÏ¿´´Ù. P(T1)¿Í 2P(T2)°¡ ó¸®µÈ CubitainerÀÇ ¿±·Ï¼Ò-${alpha}$ ³óµµ´Â ½ÇÇè±â°£ µ¿¾È Á¡Á¡ °¨¼ÒÇÏ¿´°í, ÃʱâÀÇ ³óµµ¿¡ ºñÇÏ¿© ÈξÀ ³·Àº ¼öÄ¡¸¦ º¸¿´´Ù. ±×·¯³ª, $NO_3$(T3)¿Í $P+NO_3$(T4)°¡ ó¸®µÈ CubitainerÀÇ °æ¿ì, ÃʱâÀÇ ¿±·Ï¼Ò-${alpha}$ ³óµµ¿¡ ºñÇÏ¿© ¶Ñ·ÇÇÏ°Ô Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ´Ü±â ½ÇÇèÀÇ °æ¿ì Áú¼Ò°¡ ÀÏÂ÷ÀûÀÎ Á¦ÇÑ¿äÀÎÀ¸·Î ÀÛ¿ëÇÑ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. Àå±â°£¿¡ °ÉÄ£ TP, TN, TN: P mass ratiosÀÇ ÀÚ·á¿¡ µû¸£¸é, ÀÎÀÌ ½Ä¹° ÇöûũſÀÇ ¼ºÀå¿¡ Á¦ÇÑ¿äÀÎÀ¸·Î ÀÛ¿ëÇÏ¿´°í, äÁýµÈ ½Ã±â¿Í Àå¼Ò¿¡ µû¶ó Á¦ÇÑ¿°·ù°¡ º¯ÇÏ´Â °ÍÀ¸·Î ¿¬±¸µÇ¾î Á³´Ù. º» ¿¬±¸¿¡¼­ Áú¼Ò´Â 1Â÷ Á¦ÇÑ¿µ¾ç¿°·ù·Î ÀÛ¿ëÇÏ¿´°í °èÀýÀûÀÎ ¿µÇâ¿¡ ÀÇÇÑ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù.
Nutrient Enrichment Bioassays (NEBs) were conducted in the laboratory during June $22{sim}28$, 2006 in order to determine primary limiting factor on the phytoplankton growth. For the NEBs, the water was sampled using a 10L polyethylene-lined container and dispensed into 2.5L container in the laboratory. The algal growths response in the control (C) and three treatments of phosphorus (P), 2-fold phosphorus (2P), and nitrate nitrogen $(NO_3-N)$ were monitored during 7 days. In the cubitainers which were spiked as P (T1) and 2P (T2) Chl-${alpha}$ concentrations were decreased during the test period and the final concentrations was low than initial values. However, Chl-${alpha}$ in the cubitainers which were spiked as $NO_3$(T3) and $P+NO_3$(T4) showed significant increases compared to the initial values, indicating that in the short-term experiments, nitrogen seemed to be a primary limiting nutrient during the periods of NEBs experiment. Long-term ambient nutrient data of TP and TN, and TN:TP mass ratios, however, showed a potential phosphorus limitation on phytoplankton growth and previous other researchers showed a variations of limiting nutrients by nitrogen or phosphorus depending on the seasons sampled and locations. In this study nitrogen as primary limiting nutrient in the NEBs seem to be an seasonal effect rather than the consistent nitrogen limitation.
 
Ű¿öµå
nutrient limitation;algal response;bioassay;water quality;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.spc, 2008³â, pp.35-41
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814364033968)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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