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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.44, no.3, 2011³â, pp.280-291
$^{13}C$, $^{15}N$ ÃßÀûÀÚ ½ÇÇèÀ» ÅëÇÑ ºÎÀ¯ ¼ö»ý½Ä¹°(Iris pseudoacorus)ÀÇ Cyanobacteria (Microcystis aeruginosa) ¼ºÀå¾ïÁ¦´É·Â Æò°¡
( Control of Cyanobacteria (Microcystis aeruginosa) Blooms by Floating Aquatic Plant (Iris pseudoacorus): an in situ Mesocosm Experiment Using Stable ($^{13}C$, $^{15}N$) Isotope Tracers )
±è¹Î¼·;ÀÌ¿¬Á¤;±è¹éÈ£;Ȳ¼øÁø;¾È±¤±¹;¹Ú¼±±¸;¾öÇÑ¿ë;½Å°æÈÆ; ÇѾç´ëÇб³ ÇØ¾çȯ°æ°úÇаú;ÇѾç´ëÇб³ ÇØ¾çȯ°æ°úÇаú;°Ç±¹´ëÇб³ ȯ°æ°úÇаú;°Ç±¹´ëÇб³ ȯ°æ°úÇаú;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;(ÁÖ)¾Æ½æ È£¼Ò»ýÅ¿¬±¸¼Ò;Çѱ¹³óÃ̰ø»ç ³ó¾îÃÌ¿¬±¸¿ø;ÇѾç´ëÇб³ ÇØ¾çȯ°æ°úÇаú;
 
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»ý¹°Á¶Àý±â¹ý(Biomanipulation)À» ÀÌ¿ëÇÑ ¼öÁú°³¼± ¹æ¹ýÀ¸·Î¼­, Àΰø½Ä¹°¼¶À» ÀÌ¿ëÇÑ ºÎÀ¯¼º ¼ö»ý½Ä¹°(I. pseudoacorus)Àº ±× Ç¥¸éÀû¿¡ µû¶ó¼­ ¼öÃþÀ¸·ÎÀÇ ±¤·® Åõ°ú¸¦ Á¦¾îÇÔÀ¸·Î½á ¹Ì¼¼Á¶·ùÀÇ ±¤ÇÕ¼º È¿À²À» ÀúÇØÇÑ´Ù. ¶ÇÇÑ, ¼öÃþ¿¡¼­ ¿µ¾ç¿°À» Èí¼öÇÏ¿©, ¹Ì¼¼Á¶·ùÀÇ ¼ºÀåÀ» ¾ïÁ¦ÇÔÀ¸·Î¼­ ³²Á¶·ù(M. aeruginosa) ´ë·®¹ß»ýÀ» Á¦¾îÇÒ ¼ö ÀÖ´Ù´Â °ÍÀ» $^{13}C$, $^{15}N$ ÃßÀûÀÚ ½ÇÇèÀ» ÅëÇÏ¿© Á¤·®ÀûÀ¸·Î È®ÀÎÇÏ¿´´Ù. ÀÌ¿Í °°ÀÌ ºÎÀ¯¼ö»ý½Ä¹°À» ÀÌ¿ëÇÏ¿© Àú¼öÁö³» ³²Á¶·ù ¹ø¼ºÀ» ¾ïÁ¦ÇÔÀ¸·Î¼­ ¼öÁú °³¼±¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÏÁö¸¸, µ¿¹°ÇöûũſÀÇ Á¾ Á¶¼º º¯È­¸¦ ¾ß±âÇÒ ¼ö ÀÖ´Ù´Â °ÍÀ» °í·ÁÇØ¾ß ÇÒ °ÍÀÌ´Ù. º» ¿¬±¸ °á°ú´Â ÇâÈÄ Àΰø ½Ä¹°¼¶À» »ç¿ëÇÑ ³²Á¶·ù Á¦¾î ±â¹ý¿¡ Áß¿äÇÑ ÀÚ·á·Î Ȱ¿ëµÉ °ÍÀ¸·Î »ç·áµÈ´Ù.
Bottom-up approaches to control of Microcystis aeruginosa blooms were comparatively investigated through an in situ mesocosm experiment using aquatic plants (Iris pseudoacorus). In the mesocosm experiments, floating I. pseudoacorus, seemed to be effective in controlling massive M. aeruginosa blooms in an agricultural reservoir, exhibiting a close coupling with temporal variations in Chl-a and DO concentration. Shading by floating I. pseudoacorus resulted in a reduced phytoplankton abundance inhibiting light energy availability. Moreover, I. pseudoacorus may suppress phytoplankton growth through the excretion of chemical substances, likes a allelopathy, that inhibit phytoplankton photosynthetic activity. The $^{15}N$ atom % of I. pseudoacorus showed higher values than POM, suggesting that I. pseudoacorus assimilates DIN predominantly compared to phytoplankton, which was mostly M. aeruginosa. This result strongly suggests that the M. aeruginosa bloom should be regulated by aquatic plants, like I. pseudoacorus, this approach can affect zooplankton composition. This is the first study that has used stable isotope tracers to evaluate the biomanipulation efficiency through floating I. pseudoacorus.
 
Ű¿öµå
Iris pseudoacorus;Microcystis aeruginosa;bio-control;stable isotope tracer;allelopathy;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.44, no.3, 2011³â, pp.280-291
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201102539848391)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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