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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.25, no.4, 2007³â, pp.385-393
°æ±âµµ °æ¾Èõ¿¡¼­ ¼ÒÇü º¸(ÜÇ)ÀÇ Ã¶°Å ÀÌÈÄ¿¡ º¯È­µÈ Àú¼­¼º ´ëÇü¹«Ã´Ãßµ¿¹° ±ºÁý
( Changes of Benthic Macroinvertebrate Communities after a Small Dam Removal from the Gyeongan Stream in Gyeonggi-do, Korea )
±æÇý°æ;±èµ¿°Ç;Á¤»ó¿ì;½ÅÀϱÇ;Á¶°­Çö;¿ìÈ¿¼·;¹è¿¬Àç; ¼­¿ï¿©ÀÚ´ëÇб³ »ý¹°Çаú;¼­¿ï¿©ÀÚ´ëÇб³ »ý¹°Çаú;¼­¿ï¿©ÀÚ´ëÇб³ »ý¹°Çаú;¼­¿ï¿©ÀÚ´ëÇб³ »ý¹°Çаú;ÀÎÇÏ´ëÇб³ »ý¸í°úÇаú;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø;¼­¿ï¿©ÀÚ´ëÇб³ »ý¹°Çаú;
 
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º» Á¶»ç¿¡¼­´Â °æ±âµµ °æ¾ÈõÀÇ Áß·ù¿¡ À§Ä¡ÇÑ ¼ÒÇüº¸¸¦ ö°ÅÇÑ ÀÌÈÄ¿¡ º¯È­µÈ Àú¼­¼º ´ëÇü¹«Ã´Ãßµ¿¹°ÀÇ ±ºÁýÀ» Á¶»çÇÏ¿´´Ù. Á¶»ç´Â º¸°¡ ÀÖ¾ú´ø ÁöÁ¡ÀÇ »ó·ù¿Í ÇÏ·ù, ±×¸®°í Áß·ù (º¸ÀÇ ÀÚ¸®)¿¡¼­ º¸ÀÇ Ã¶°Å ÈÄ 4ȸ (2004³â 11¿ù, 2005³â 5¿ù, 2006³â 1¿ù, ±×¸®°í 2006³â 5¿ù)¿¡ °ÉÃÄ Surber sampler (50$ imes$50 cm, ¸Á¸ñ 0.25 mm)·Î Á¤·®Ã¤ÁýÀ» ÇÏ¿´´Ù. Á¶»çÀÇ °á°ú, Á¶»çÁö¿ª¿¡¼­´Â ÃÑ 4¹® 5°­ 11¸ñ 27°ú 35¼Ó 46Á¾ÀÇ Àú¼­¼º ´ëÇü¹«Ã´Ãßµ¿¹°ÀÌ ÃâÇöÇÏ¿´À¸³ª, Á¶»ç½Ã±âº° ÃâÇöÁ¾¼ö´Â ÁöÁ¡´ç 3$sim$17Á¾À¸·Î Â÷À̰¡ ÄÇ´Ù. »ó·ùÁöÁ¡Àº º¸ÀÇ Ã¶°Å 1³â ÀÌÈĺÎÅÍ Á¡Â÷ ¿©¿ïÀÌ Çü¼ºµÇ°í, ÇÏ»ó¹°ÁúÀÌ ´Ù¾çÈ­ µÇ´Â µî ¼­½Äȯ°æÀÌ ¹Ù²îÀÚ Á¾¼ö°¡ Á¡Â÷ Áõ°¡ÇÏ¿´°í, ºÐ·ù±ºÀÇ Á¶¼ºµµ Á¡Â÷ ´Ù¾çÇÏ°Ô ¹Ù²î¾ú´Ù. ¿ìÁ¡Á¾Àº ´ëºÎºÐ ¿À¿°¿¡ ³»¼ºÀÌ °­ÇØ µµ½ÃÇÏõ¿¡ dzºÎÇÑ ±òµû±¸·ù(Chironomidae sp.)¿Í ½ÇÁö··ÀÌ·ù(Tubificidae sp.)¿´°í, ÀϺΠÁöÁ¡¿¡¼­ ÁÙ³¯µµ·¡(H. kozhantschikovi)°¡ Á¦2¿ìÁ¡Á¾À¸·Î ³ªÅ¸³µ´Ù. º¸ÀÇ Ã¶°Å ¾à 1³âÈĺÎÅÍ ¿ìÁ¡µµÁö¼ö´Â ³·¾ÆÁö°í, Á¾´Ù¾çµµÁö¼ö´Â ³ô¾ÆÁö´Â °æÇâÀ» ³ªÅ¸³Â´Ù. »ó·ù ÁöÁ¡¿¡ ¿©¿ïÀÌ Çü¼ºµÇ¸é¼­ ÁÙ³¯µµ·¡·ù(Hydropsychidae spp.)°¡ Áõ°¡ÇÏÀÚ collector-filterersÀÇ ºñÀ²ÀÌ Áõ°¡ÇÏ¿´°í, ³³ÀÛÇÏ·ç»ìÀÌ·ù (Heptageniidae spp.) µîÀÇ clingers, ²¿¸¶ÇÏ·ç»ìÀÌ·ù (Baetidae spp.)µîÀÇ swimmersÀÇ ºñÀ² ¶ÇÇÑ »ó´ëÀûÀ¸·Î Áõ°¡ÇÏ¿´´Ù. Àú¼­¼º ´ëÇü¹«Ã´Ãßµ¿¹°¿¡ ÀÇÇÑ ¼öȯ°æ µî±ÞÀ» ³ªÅ¸³»´Â ±º¿À¿°Áö¼ö(GPI)¿Í ¼öȯ°æÆò°¡Áö¼ö(ESB) ¸ðµÎ º¸ÀÇ Ã¶°Å ÀÌÈÄ »ó·ùÁöÁ¡¿¡¼­ ¼öȯ°æÀÇ °³¼±È¿°ú¸¦ °¡Á®¿Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Benthic macroinvertebrate communities were studied after a small dam removal from the mid-section of the Gyeongan stream in Gyeonggi-do, Korea. Quantitative sampling was conducted at immediately upstream (upper) and downstream (lower) sites from the dam as well as at the site where the dam was located (dam site: middle) using a Surber sampler (50$ imes$50 cm, mesh 0.25 mm), four times (November 2004, May 2005, January 2006, and May 2006) after the dam removal. As a result, 46 species of benthic macroinvertebtates, belonged in 35 genera, 27 families, 11 orders, 5 classes, and 4 phyla, were sampled from the stream sites, but the number of species that occurred at each sampling trial was different (ranged 3$sim$17 spp.) according to the seasons and sites. Approximately one year after the dam removal, the species number has in-creased and taxa composition has changed as the microhabitat became more heterogeneously due to a riffle formation in the upstream site. Chironomid larvae and tubificid worms, which are common in Korean urban streams, were the dominant species, while Hydropsyche kozhantschikovi was the 2nd dominant species at some sampling trials. In general, McNaughton's dominance indices decreased and Shannon species diversity indices increased approximately one year after the dam removal. Compositions of collector-filterers, clingers, and swimmers increased as hydropsychid caddisflies, heptageniid mayflies, and baetid mayflies increased, respectively, in the upstream site. The group pollution index and the ecological score using benthic macroinvertebrates both indicated that water environment has been improved in the upstream site after the dam removal.
 
Ű¿öµå
benthic macroinvertebrates;dam removal;Gyeongan stream;taxa composition;functional groups;biomonitoring;
 
ȯ°æ»ý¹° / v.25, no.4, 2007³â, pp.385-393
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200714364665543)
¾ð¾î : Çѱ¹¾î
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