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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.43, no.1, 2010³â, pp.69-81
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( Fish Fauna and Community Analysis in Heuck Stream Watershed ) |
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| ÈæÃµ¼ö°è¸¦ ±¸¼ºÇÏ´Â ÈæÃµ 6°³ÀÇ º»·ù ¹× 14°³ÀÇ Áö·ù ÇÏõÀ» ´ë»óÀ¸·Î ¾î·ù±ºÁýÀÇ ºÐÆ÷Ư¼ºÀ» ºÐ¼®ÇÑ °á°ú, ÃÑ 9°ú 26Á¾ÀÇ ¼½ÄÀÌ È®ÀεǾúÀ¸¸ç, ÀÌ Áß Cyprinidae ¾î·ù°¡ 15Á¾À¸·Î ´Ù¾çÇÏ°Ô ºÐÆ÷ÇÏ¿´´Ù. ÈæÃµ¼ö°è¿¡¼ ¿ìÁ¡Á¾Àº °¥°Ü´Ï (29%), ÇǶó¹Ì (22%), ¹öµéÄ¡ (21%) µîÀÇ ¼øÀ¸·Î³ªÅ¸³µ´Ù. ¶ÇÇÑ, ÈæÃµ º»·ù¿¡¼ ÀÌµé ¿ìÁ¡Á¾ÀÇ ºÐÆ÷Ư¼ºÀº ÃÖ»ó·ù¿ªÀº ¹öµéÄ¡, »ó·ù¿ªÀº °¥°Ü´Ï, Áß-»ó·ù¿ªÀº °¥°Ü´Ï, ÇǶó¹Ì, Áß-ÇÏ·ù¿ªÀº ÇǶó¹Ì¿¡ ÀÇÇØ ÇÏõƯ¼ºÀÌ °áÁ¤µÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¼½ÄÀÌ È®ÀÎµÈ ¾î·ù Áß Çѱ¹°íÀ¯Á¾Àº ÇѰ³³ÁÙ°³ µî 7°ú 13Á¾ (50%)·Î °íÀ¯Á¾ÀÇ ±¸¼ººñ°¡ ³ô°Ô ³ªÅ¸³ª Çѹݵµ Æò±ÕÀûÀÎ °íÀ¯Á¾ ºóµµÀÎ 23%¿¡ ºñÇØ ¸Å¿ì ³ôÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇÏõÂ÷¼öº° ¾î·ùÀÇ ºÐÆ÷ƯÁ¤Àº ÇÏõÂ÷¼ö°¡ Áõ°¡ÇÒ¼ö·Ï Á¾¼ö ¹× °³Ã¼¼ö°¡ Áõ°¡ÇÏ´Â °ÍÀ¸·Î °æÇâÀ» º¸¿´´Âµ¥ ÀÌ´Â ÇÏõũ±âÀÇ ¿µÇ⺸´Ù´Â ÁöÁ¡°£ÀÇ À̰ݰŸ® ¹× Áö·ùÇÏõÀÇ Áö¸®Àû À§Ä¡¿¡ µû¸¥ Â÷À̰¡ ¾î·ù ºÐÆ÷¿¡ ÀÖ¾î¼ ´õ ¸¹Àº ¿µÇâÀ» ÁÖ´Â °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. ¶ÇÇÑ, ³»¼ºµµ ºû Æ®·ÎÇÈ ±æµå¸¦ ºÐ¼®ÇÑ °á°ú¿¡¼´Â ÇÏõÂ÷¼ö°¡ Áõ°¡ÇÔ¿¡ µû¶ó ¹Î°¨Á¾ ¹× Ãæ½ÄÁ¾Àº ´Ù¼Ò °¨¼ÒÇÏ´Â °æÇâÀ» º¸ÀÌ´Â °ÍÀ¸·Î ºÐ¼®µÇ¿´À¸¸ç, ³»¼ºÁ¾ ºû Àâ½ÄÁ¾Àº ÇÏõÂ÷¼ö°¡ Áõ°¡ÇÔ¿¡ µû¶ó Áõ°¡ÇÏ´Â °æÇâÀ» º¸ÀÌ´Â °ÍÀ¸·Î ºÐ¼®µÇ¾ú´Ù. ƯÈ÷, ¹Î°¨Á¾ ¹× Ãæ½ÄÁ¾ ºñÀ²ÀÌ 50% ÀÌ»ó µÇ´Â ±¸°£µéÀÌ ¸¹Àº °ÍÀ¸·Î ºÐ¼®µÇ¾î Ȥõ¼ö°è°¡ ÇÏõÀÇ ÀÚ¿¬¼º ¹× ¼½Äȯ°æÀÇ º¸Á¸°¡Ä¡°¡ ³ôÀº ¼ö°è·Î »ç·áµÈ´Ù. |
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| This study was conducted at 25 sites of 6 mainstreams and 19 tributaries sites within Heuck Stream watershed during May~October 2003 for the survey of fish distributions, compositions, and community characteristics. The survey showed that total fish was identified as 9 family and 26 species in all sites, and Cyprinidae dominated the community as 15 species. The dominant species of >20% of the total were Zacco temminckii (29%), Zacco platypus (22%), and Rhynchocypris oxycephalus (21%) in the watershed. Community analysis, based on the stream spatial gradients, indicated composition differences along the main axis of the stream from the headwater to the downstream; R. oxycephalus predominated in the most headwater zone and Z. temminckii dominated in the lower headwater zone, whereas Z. temminckii -Z. platypus dominated in the mid-to-downstream, and Z. platypus dominated the community in the most downstream zone. Total endemic species was 7 family and 15 species, which is made of 50% in the fish community, so that the high proportion of endemic species indicated a healthy region in terms of fish community, compared to average 23% in Korean peninsula in general. The total number and species of fish increased as the stream order (stream size) increased, indicating that impacts on chemical pollution or habitat disturbance were not so large to the fish community in this watershed. Trophic and tolerance guilds analysis showed that relative proportions of sensitive and insectivore species were >50% in the watershed and decreased as the stream order increased, whereas relative proportions of tolerant and omnivore species showed an opposite results. These outcomes suggest that the natural condition of watershed is preserved relatively and the region should be protected from the chemical and habitat disturbace by agricultural activity and urban developments. |
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| Ű¿öµå |
| Heuck Stream;fish fauna;watershed;stream order;endemic species;composition; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.43, no.1, 2010³â, pp.69-81
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201023064630419)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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