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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.2, 2004³â, pp.227-235
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³«µ¿° Áß·ù(±¸¹Ì Áö¿ª)ÀÇ ¾î·ù±ºÁý±¸Á¶
( The Fish Community Structure in the Middle of Nakdong River ) |
| ¼ÁØ¿ø;±ÝÁöµ·;¾çÈ«ÁØ;°¿µÈÆ; ÀÚ¿¬»ýÅ¿¬±¸¼Ò;ÀÚ¿¬»ýÅ¿¬±¸¼Ò;°æºÏ´ëÇб³ »ç¹ü´ëÇÐ »ý¹°±³À°°ú;ÀÚ¿¬»ýÅ¿¬±¸¼Ò;
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| 2001³â 4¿ùºÎÅÍ 2002³â 7¿ù±îÁö ³«µ¿° Áß·ù-±¸¹ÌÁö¿ª Áß½ÉÀÇ ¾î·ù»óÀ» Á¶»çÇÑ °á°ú ¼½ÄÀÌ È®ÀÎµÈ ¾î·ù´Â 10°ú 32¼Ó 39Á¾À̾ú´Ù. äÁýµÈ ¾î·ù °¡¿îµ¥ À×¾î°ú ¾î·ù°¡ 25Á¾ (64.1%)À¸·Î °¡Àå ¸¹¾Ò°í, ´ÙÀ½Àº ¹Ì²Ù¸®°ú ¾î·ù°¡ 3Á¾(7.7%)À̾ú´Ù. Çѱ¹°íÀ¯Á¾Àº 4°ú 11¼Ó 14Á¾À¸·Î Àüü ÃâÇöÁ¾ÀÇ 35.9%¸¦ Â÷ÁöÇÏ¿´À¸¸ç, ¿Ü·¡ ¾îÁ¾Àº Micropterus salmoides (2.5%)¿´´Ù. ÃâÇöÁ¾ Áß¿¡¼ ¿ìÁ¡Á¾Àº ÇǶó¹Ì (36.7%), ¾Æ¿ìÁ¡Á¾Àº ²ô¸® (22.7%)¿´À¸¸ç, ºØ¾î¿Í ¿©¿ï¸¶ÀÚ°¡ »ó´ëdzºÎµµ 4.0${sim}$4.3%·Î¼ ¸¹ÀÌ ¼½ÄÇϰí ÀÖ¾ú´Ù. ±×·¯³ª Ä®³³ÀÚ·ç, ¿Ö¸ô°³, ¿ÕÁ¾°³, ½¬¸®, °¥¹®¸ÁµÏ, ÂüÁß°í±â, ¸Þ±â, °¡¹°Ä¡´Â 1${sim}$3°³Ã¼¸¸ ÃâÇöÇÏ¿© Èñ¼ÒÁ¾À̾ú´Ù. 1990³â´ë Áß¹Ý ´Ù¸¥ ¼ö°è¿¡¼ ÀÌÀÔµÈ À°½Ä¼ºÀÎ ²ô¸®(O. uncirostris amurensis) °³Ã¼±ºÀÇ ¹Ðµµ°¡ ³«µ¿° Áß·ù¿ª¿¡¼ ±Þ°ÝÈ÷ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. À̹ø Á¶»ç¿¡¼ ºÐÆ÷»ó ÁÖ¸ñµÇ´Â Èò¼ö¸¶ÀÚ´Â ÇÏ»óÀÌ ÁÖ·Î ¸ð·¡·Î µÈ ¿©¿ï(À¯¼Ó 0.43${sim}$o.67m $s^{-1}$)¿¡ ¼½ÄÇÏ¿´À¸¸ç, º¸È£°¡ ¿ä¸ÁµÈ´Ù. Á¶»çÁö¿ªÀÇ ¾î·ù±ºÁýÀ» ºÐ¼®ÇÑ °á°ú Á¾´Ù¾çµµ, ±Õµîµµ ¹× ¿ìÁ¡µµÁö¼ö´Â °¢°¢ 1.008, 0.633 ¹× 0.196À¸·Î ³ªÅ¸³µ´Ù. ¼öº¯½Ä¹°ÀÌ ¹ß´ÞÇÏ°í ´Ù¾çÇÑ ¼½Äó¸¦ Æ÷ÇÔÇÏ´Â Áö·ùºÎÀÇ Á¾´Ù¾çµµ°¡ 1.112·Î 0.787ÀÇ º»·ùºÎº¸´Ù ³ô°Ô ³ªÅ¸³µ´Ù. °ñÀçäÃë·Î ÀÎÇØ ÇÏõ»ýŰ谡 ±³¶õµÈ St. 3, 11, 13, 14¿¡¼ Á¾´Ù¾çµµ°¡ 0.421 ${sim}$ 0.574·Î ³·°Ô ³ªÅ¸³µ´Ù. |
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| Fish fauna and community structure were surveyed in the Nakdong River, Gumi City, Kyeongpook province from April 2001 to July 2002. During the surveyed Period, 39 species, 32 genera belonging to 10 families were collected. Cyprinid fish occupied 64.1% (25 species) and cobitid fish had 7.7% (3 species). Fourteen species(35.9%) of observed species were known as endemic species. The exotic fish was Micropterus salmoides (2.5%) . The dominant species were Zacco platypus (relative abundance: 36.7%) and Opsariichthys uncirorstris amurensis (22.7%). Carassius aurafus and Microphysogobio rapidus were numerous (4.0${sim}$4.3%). The rare species comprising less than 0.15% were Acheilognathus koreensis, Aphyocypris chinensis, Iksookimia longicorpus, Coreoleuciscus splendidus, Rhinogobius giurinus, Sarcocheilichthys variagatus wakiyae, Silurus asotus astus, and Channa argus. It was found that the population density of carnivorous Opsariichthys uncirostris amurensis increased drastically in the mid-reach of the Nakdong river since it had been introduced from the other native rivers in the middle 1990s. Gobiobotia nakdongensis inhabit riffle (water velocity : 0.43${sim}$0.67 m $s^{-1}$) of which the river bed is mainly sand. This species is considered to be in need of conservation. As the result of analyzing fish community in the surveyed area, the species diversity, evenness and dominant indices were 1.008, 0.663 and 0.196 respectively. The findings showed that the tributary, which the waterside plants were abundant and had various habitats, had a higher species diversity (1.112) than the main river (0.787). Sand mining had been disturbing the river ecosystem of the study stations 3, 11, 13 & 14, and these stations showed a quite low species diversity (0.421 ${sim}$0.574). |
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| Ű¿öµå |
| fish fauna;community;diversity;Nakdong River;Gumi City; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.2, 2004³â, pp.227-235
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317182850)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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