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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.40, no.1, 2007³â, pp.163-172
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1Â÷ ¼ÒÇÏõÀÇ È¯°æÆ¯¼º ¹× ¾î·ù±ºÁý
( Environmental Characteristics and Fish Community of Small First-order Stream ) |
| ¹®¿î±â;¾È±¤±¹; Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;
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| º» ¿¬±¸¿¡¼, ±Ý°ÀÇ ÀÛÀº Áö·ù ÇÏõµéÀÎ 31°³ ¼ÒÇÏõµéÀ» ´ë»óÀ¸·Î 2003³â 10¿ùºÎÅÍ 11¿ù±îÁö ¾î·ù»ó, ±ºÁýºÐ¼® ¹× ÇÏõ ÇüÅ¿¡ ´ëÇÑ ¿¬±¸¸¦ ¼öÇàÇÏÇû´Ù. Á¶»çµÈ ¼ÒÇÏõµéÀº ÇÏÆø, ¼ö½É, ÇÏ»ó ±¸¼º¹°Áú, ÇÏõ½Ä»ý ¹× ÁÖº¯ÀÇ ÅäÁö À̿뵵¿¡ µû¶ó »êÁöÇü, »êÁö-ÆòÁöÇü, ÆòÁöÇü, ³ó¼ö·ÎÇü¼ÒÇÏõÀÇ 4°¡Áö À¯ÇüÀ¸·Î ±¸ºÐ ´ëº°µÇ¾ú´Ù. Á¶»ç±â°£ Áß ¼½ÄÀÌ È®ÀÎµÈ ¾î·ù´Â 4°ú 8Á¾À̾úÀ¸¸ç, À×¾î°ú ¾î·ù°¡ ´Ù¸¥ ºÐ·ù±º¿¡ ºñÇØ °¡Àå ³ô°Ô ³ªÅ¸³µ°í, Rhynchocypris oxycephalus°¡ 419°³Ã¼·Î ÀüüÀÇ 73%·Î ¿ìÁ¡Á¾À¸·Î ³ªÅ¸³µ´Ù. R. oxycephalus´Â 100%»ê¸²Áö¿ª°ú ¿¬°èµÈ Áö¿ªÀÌ¸é¼ Á¡¿À¿°¿ø ¹× ºñÁ¡¿À¿°¿øÀÌ ÀüÇô ¾ø´Â 5°³ÀÇ ¸ðµç »êÁöÇü ¼ÒÇÏõ(SM)¿¡¼ ÃâÇöÇÑ À¯ÀÏÇÑ Á¾À¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, º» Á¶»ç´ë»ó ¼ÒÇÏõµé¿¡¼ ÃâÇöÇÑ Á¾µé ÁßR. oxycephalusÀÇ ÃâÇöºñÀ²Àº ÇÏõÀÇ Çϻ󱸼º ÀÎÀÚ Áß ¸ð·¡ (Sand, Sa)¿Í ÀÛÀº ÀÚ°¥(Pebble, Pe)·Î ±¸¼ºµÈ ÇÏõµé º¸´Ù ¾Ï¹Ý(Bedrock, Be)°ú Å«µ¹(Boulder, Bo)·Î ÀÌ·ç¾îÁø ÇÏõµé¿¡¼ ¾çÀÇ »ó°ü°ü°è¸¦ °®´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù(r=0.754, p<0.001, n=31). 2007°ß ȯ°æºÎ¿¡¼ °øÇ¥ÇÑ »ý¹°ÇÐÀû ¼öÁú±âÁؾȿ¡ ÀǰÅÇÒ ¶§ º» »êÁöÇü ¼ÒÇÏõ(SM)Áö¿ªÀº "ÃÖÀû»óÅÂ"·Î ³ªÅ¸³µ´Ù. ÀÌ¿Í °°Àº °á°ú´Â ±¹³» ÇÏõµéÀÇ ÃÖ»ó·ù¿ª¿¡ ¼½ÄÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁø Á¾µéÀÇ ÀϹÝÀûÀÎ °æÇâ°ú ÀÏÄ¡ÇÏ´Â °ÍÀ¸·Î »ç·áµÇ¾ú´Ù. À¯Çüº°·Î »êÁöÇü ¼ÒÇÏõ(SM)¿¡¼ R. oxycephalus 1°ú 1Á¾, »êÁö-ÆòÁöÇü ¼ÒÇÏõ(MF)¿¡¼ R. oxycephalusµî 4°ú 6Á¾, ÆòÁöÇü ¼ÒÇÏõ (FL)¿¡¼ R. oxycephalus µî 4°ú 8Á¾, ³ó¼ö·ÎÇü ¼ÒÇÏõ(AW)¿¡¼ R. oxycephalusµî 2°ú 2Á¾ÀÇ ¼½ÄÀÌ È®ÀεǾú´Ù. º» ¿¬±¸ °á°ú¿¡ µû¸£¸é, ¿À¿°¿øÀÌ ÀüÇô ¾ø°í, »ê¸²À¸·Î µÑ·¯ ½×ÀÎ ÇÏõ¿¡¼ ÃâÇöÇÑ R. oxycephalus´Â »ý¹°ÇÐÀû ¼öÁúÆÇÁ¤½Ã 1±Þ¼ö Áö¿ª¿¡¼ ÃÖ´ë °ªÀ» º¸ÀÌ´Â »ýÅÂÁöÇ¥Á¾ ÁßÀÇ Çϳª·Î¼ »ç·áµÇ¾ú´Ù. |
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| In this study, fish fauna and stream characteristics were surveyed during October-November 2003 in 31 small streams, which are small sub-tributaries of Geum River. The small streams were classified into 4 types of steep mountainous (SM), mountainous-flatland (MF), flat land (FL), and agricultural watercourse (AW) streams, and their types were categorized by features of stream width, water depth, bottom substrate, riparian vegetation, and landuse patterns. The fishes collected during this survey were identified 4 families and 8 species. Dominant family was Cyprinidae, and the most dominant species was Rhynchocypris oxycephalus with 73% (419 individuals) of the total. Only one species of R. oxycephalus was observed in the all five steep mountainous streams, which was surrounded by 100% forest area and had no point-and non-point pollution sources. The observed frequency of R. oxycephalus (as a relative proportion of species) showed a significant positive correlation (r=0.754, p<0.001, n=31) with the substrate composition of bedrock and boulder, indicating that the species prefer the bedrock and boulder rather than the sand or small pebble. Evidently, all five steep mountainous streams were judged as excellent condition (1st rank) according to the criteria of biological water quality, the Ministry of Environment, Korea. This result was accord with a general tendency of the species in most upper stream of the Koreas streams. One family and one species were found at the steep mountainous types and 4 families 6 species were at the mountainous-flatland. Four families 8 species were found at the flat land, which showed most diverse habitat, and 2 families 2 species were collected agricultural watercourse. These study results of 1st-order streams suggest that R. oxycephalus was considered as one of 1st rank ecological indicator species, and that the dominant area should be protected from various pollutions and disturbances. |
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| Ű¿öµå |
| stream types;1st order stream;R. oxycephalus;fish community;small streams; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.40, no.1, 2007³â, pp.163-172
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200709905949601)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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