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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.2, 2008³â, pp.188-197
ÇÏõ ¼­½ÄÁö Ư¼º¿¡ µû¸¥ ÇǶó¹Ì(Zacco platypus)ÀÇ ÃѼöÀº ÇÔ·® ¹× »ýÅ °Ç°­¼º ºÐ¼®
( Total Mercury Contents in the Tissues of Zacco platypus and Ecological Health Assessments in Association with Stream Habitat Characteristics )
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º» ¿¬±¸´Â ÇǶó¹Ì(Zacco platypus)¸¦ ´ë»óÀ¸·Î ¾î·ù Á¶Á÷º° ÃѼöÀº ÇÔ·®À» ±Ô¸íÇϰí, ¼­½ÄÁö Ư¼º ¹× È­ÇÐÀû ¼öÁúÁ¶°Ç¿¡ µû¸¥ »ýÅ °Ç°­¼ºÀ» Æò°¡Çϱâ À§ÇÑ »ç·Ê¿¬±¸·Î¼­ ¼öÇàµÇ¾ú´Ù. 2007³â 6¿ù$sim$10¿ù¿¡ °©ÃµÀ» ´ë»óÀ¸·Î ¾î·ùÁ¶»ç¸¦ ½Ç½ÃÇÏ¿´°í °£, ½ÅÀå, ¾Æ°¡¹Ì, ôÃß ¹× ±ÙÀ° µî ÇǶó¹ÌÀÇ 5°³ Á¶Á÷À» ÀûÃâÇÏ¿© Á÷Á¢¼öÀººÐ¼®±â(DMA-80, US EPA Method 7473)À» ÀÌ¿ëÇÏ¿© ÃѼöÀº ÇÔ·®À» ºÐ¼®ÇÏ¿´´Ù. Àüü Á¶Á÷µéÀÇ Æò±Õ ÃѼöÀº ³óµµ´Â »ó.ÇÏ·ù °¢°¢ $67.2;{mu}g;kg^{-1}$ ¹× $20.7;{mu}g;kg^{-1}$·Î ³ªÅ¸³ª ¸¼°í ±ú²ýÇÑ »ó·ùÁö¿ªÀÌ ÇϼöÁ¾¸»Ã³¸®ÀåÀÇ ¿µÇâÀ» ¹Þ°í ÀÖ´Â ÇÏ·ùÁö¿ª¿¡ ºñÇØ 3¹è ÀÌ»ó ³ô°Ô ³ªÅ¸³µ´Ù. BOD, COD ¹× ¿µ¾ç¿°·ù(TN, TP)¿¡ ±Ù°ÅÇÑ È­ÇÐÀû ¼öÁúÆò°¡¿¡¼­´Â »ó·ùº¸´Ù ÇÏ·ù¿¡¼­ ½É°¢ÇÑ ÁúÀûÀúÇϰ¡ ¹ß»ýÇÏ¿´´Ù. ¾î·ù¸¦ ÀÌ¿ëÇÑ ´Ùº¯¼ö ¸ðµ¨ÀÎ »ý¹°ÅëÇÕÁö¼ö(IBI)´Â Æò±Õ 32 "¾çÈ£$sim$º¸Åë»óÅÂ"·Î ³ªÅ¸³µ°í, S2´Â 42 "ÃÖÀû$sim$¾çÈ£»óÅÂ"·Î ÃÖ°íÄ¡¸¦ º¸ÀÎ ¹Ý¸é S5¿¡¼­´Â ÃÖÀúÄ¡ÀÎ 22 "º¸Åë$sim$¾ÇÈ­»óÅÂ"·Î ³ªÅ¸³ª ÁöÁ¡º° º¯À̸¦ º¸À̰í ÀÖ¾ú´Ù. Á¤¼ºÀû ¼­½ÄÁöÆò°¡Áö¼ö(QHEI)ÀÇ °æ¿ì Æò±Õ 142·Î¼­ "¾çÈ£»óÅÂ"·Î ³ªÅ¸³µÁö¸¸ ÁöÁ¡º° º¯ÀÌ(¹üÀ§ 67$sim$181)°¡ Å©°Ô ³ªÅ¸³µ´Ù. Á¾ÇÕÀûÀ¸·Î IBI¹× QHEI¸¦ ÅëÇÑ »ýÅ °Ç°­¼º Æò°¡¿¡¼­´Â »ó·ùÁö¿ªÀÌ ¾çÈ£ÇÏ°Ô ³ªÅ¸³­ ¹Ý¸é ¾î·ù Á¶Á÷ ³» ¼öÀº »ý¹° ³óÃ൵´Â »ó¹ÝµÈ °á°ú¸¦ º¸¿´´Ù. µû¶ó¼­ ÃÑüÀûÀÎ ¼öȯ°æ °Ç°­¼º Æò°¡¸¦ À§Çؼ­´Â ´Ù¾çÇÑ º¯¼ö¸¦ ÀÌ¿ëÇÑ Æò°¡±â¹ýÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù.
This research was a preliminary case study to determine the levels of total mercury in the tissues of sentinel species (Zacco platypus) and ecological health in relation to habitat characteristics and chemical conditions. We collected fishes in Gap Stream during June$sim$October 2007 and analyzed the total mercury from five types of tissues such as liver, kidney, gill, vertebrae and muscle of Zaceo platypus using Direct Mercury Analyzer (DMA-80, US EPA Method 7473). Mean concentrations of total [Hg], based on all tissues, was 67.2 and $20.7;{mu}g;kg^{-1}$, in the upstream and downstream site, respectively, indicating 3 times greater level in the upstream. In other words, the levels were higher in the pristine upstream than the downstream influenced by the wastewater disposal plant. Chemical water quality, based on BOD, COD and nutrients (TN, TP) showed that severe degradation occurred in the downstreams than the upstreams. Index of Biological Integrity (IBI) using fish multi-metric model averaged 32, indicating a "good$sim$fair" condition and varied from 42 (excellent$sim$good) at S2 to 22 (fair$sim$poor) at S5 depending on the sites sampled. Qualitative Habitat Evaluation Index (QHEI) in the all sites averaged 142, which was judged as "good" habitat health, but showed a high variation (181 in Site 2 vs. 67 in Site 5). Overall data suggest that health conditions, based on IBI and QHEI, was better in the upstream sites but the mercury bioaccumulation levels in the fish tissues were opposite. We believe that measurements of various parameters are required for a diagnosis of integrative ecosystem health.
 
Ű¿öµå
Total mercury;ecological health;habitat;water quality;Zacco platypus;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.2, 2008³â, pp.188-197
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200827448607753)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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