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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.32, no.4, 1999³â, pp.319-319
¼¶Áø°­ Áß·ù ¼ö¿ª¿¡ À־ ½Ä¹°Çöûũſ°ú ºÎÂøÁ¶·ù ±ºÁýÀÇ °èÀýÀû º¯È­
( Seasonal Changes of the Phytoplankton and the Periphyton Community in the Mid Somjin River )
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¼¶Áø°­ ¼ö°èÀÇ ¿ÁÁ¤È£ ÇÏ·ù ¼ö¿ªºÎÅÍ ÀӽDZº ³²ºÎÀÇ Àû¼º¸é¿¡ À̸£´Â ¼¶Áø°­ Áß·ù ¼ö¿ªÀ» ´ë»óÀ¸·Î. ÀÌÈ­ÇÐÀû ȯ°æ¿äÀÎ, ½Ä¹°ÇöûũſÀÇ Á¾Á¶¼º°ú ÇöÁ¸·® ¹× ºÎÂøÁ¶·ù¿¡ ´ëÇÑ Á¶»ç¸¦ 1998³â 8¿ùºÎÅÍ 1999³â 4¿ù±îÁö 5°³ Á¤Á¡¿¡¼­ ½Ç½ÃÇÏ¿´´Ù. ÀÌÈ­ÇÐÀû ȯ°æ¿äÀÎ Áß pH´Â Áß¼º¿¡¼­ºÎÅÍ ¾à¾ËÄ«¸®¼ºÀ» ³ªÅ¸³»¾ú°í, ÃâÇöÇÑ ½Ä¹°ÇöûũſÀº 137 Á¾·ùÀ̾úÀ¸¸ç ¸ðµç Á¤Á¡¿¡¼­ µ¹¸»·ù´Â °í¸£°Ô ÃâÇöÇÏ¿´´Ù. Á¶»çÁ¤Á¡ Áß ÇÏ·ù¼ö¿ªÀÎ Á¤Á¡ 1¹× Á¤Á¡ 2¿¡¼­´Â ³²Á¶·ù ¹× ³ìÁ¶·ùÀÇ ÃâÇöºóµµ°¡ ³ô¾Æ Á¤Á¡°£ÀÇ Â÷À̸¦ ³ªÅ¸³»¾ú´Ù. ÃâÇöÇÑ µ¹¸»·ù´Â ´ëºÎºÐÀÌ ¸·´ë ¸ð¾çÀÇ ±êµ¹¸»·ù¿´´Ù. °èÀýº°·Î´Â µ¿°è¿¡ Àû°Ô ÃâÇöÇÏ¿´°í Ãá°è ¹× Çϰ迡 ¸¹ÀÌ ÃâÇöÇÏ¿´À¸¸ç Á¤Á¡º°·Î´Â ÇÏ·ù Á¤Á¡À¸·Î °¥¼ö·Ï ÃâÇöÁ¾·ù ¼ö°¡ Áõ°¡ÇÏ¿´´Ù. ½Ä¹°Çöûũſ ÇöÁ¸·®Àº 1998³â 8¿ù¿¡ Á¤Á¡ 3ÀÇ 15,100 cells/lÀÌ ÃÖÀú¿´À¸¸ç 1999³â 4¿ù Á¤Á¡ 4ÀÇ 1,771,700 cells/lÀÌ ÃÖ´ë¿´´Ù. Á¤Á¡º° ÇöÁ¸·® º¯ÀÌ´Â Á¤Á¡ 1 ¹× Á¤Á¡ 2¿¡¼­¿Í Á¤Á¡ 3, Á¤Á¡ 4 ¹× Á¤Á¡ 5¿¡¼­´Â ´Ù¸¥ ¾ç»óÀ» ³ªÅ¸³»¾ú´Ù. Cymbella minuta°¡ ¸ðµç Á¤Á¡¿¡¼­ ÃÖ°íÀÇ Á¡À¯À²À» ³ªÅ¸³»¾úÀ¸¸ç À̿ܿ¡ Cymbella affinis, C. silesiaca, C. turgidula, Fragilaria fragilarioides, Navicula cryptocephala, Nitzschia frustulum, N. sp. 1 µîÀÌ ÁÖ¿ä ¿ìÁ¡Á¾À¸·Î ÃâÇöÇÏ¿´´Ù. ºÎÂøÁ¶·ù´Â 106Á¾·ù°¡ ÃâÇöÇÏ¿´À¸¸ç, µ¹¸»·ùÀÇ ÃâÇöºóµµ°¡ ¸Å¿ì ³ô¾ÒÀ¸¸ç ÃâÇöÁ¾·ù´Â ½Ä¹°Çöûũſ ±ºÁý°ú´Â ¾à°£ÀÇ Â÷À̸¦ ³ªÅ¸³»¾ú´Ù. ÃâÇöÁ¾·ù ¼ö´Â ºñ±³Àû »ç°èÀý °í¸£°Ô ÃâÇöÇÏ¿© ½Ä¹°ÇöûũſÀÇ ÃâÇöÀåȲ°ú´Â Â÷À̸¦ ³ªÅ¸³»¾ú´Ù. ÃâÇöÇÑ ½Ä¹°Çöûũſ ¹× ºÎÂøÁ¶·ù Áß °¢°¢ÀÇ µ¹¸»·ù¸¦ ´ë»óÀ¸·Î Van Dam et al.(1994)ÀÇ Ecological indicator values¸¦ Àû¿ë½ÃÄѺ» °á°ú, º» Á¶»ç¼ö¿ªÀÇ ¼öÁú ¿À¿°Á¤µµ´Â ${eta}$-Áߺμö¼ºÀ» ³ªÅ¸³»¾úÀ¸¸ç, ¿µ¾ç»óÅ´ Áß-ºÎ¿µ¾ç°ú ºÎ¿µ¾ç »çÀÌ ´Ü°è ¹× ºÎ¿µ¾ç¿¡ ±ÙÁ¢ÇÑ »óŸ¦ ³ªÅ¸³»¾ú´Ù. ºÎÀ¯µ¹¸»·ù ¹× ºÎÂøµ¹¸»·ùÀÇ ÃâÇö¿¡ µû¸¥ Ecological indicator values¿¡´Â Å« Â÷À̰¡ ¾ø¾ú´Ù.
Seasonal changes of the phytoplankton and the periphyton community were investigated from August 1998 to April 1999 at five stations in the Mid Somjin River. The species numbers of phytoplankton were 137 spp. Of those, the diatoms were present at all stations but the green algae and the bluegreen algae were present at Station 1 and Station 2 more frequently than the other stations. The species number increased with flowing downward. The phytoplankton standing crops varied from 15,100 cells/l at Station 3 in August 1998 to 1,771,700 cells/l at Station 4 in April 1999. The seasonal variation patterns of phytoplankton standing crops were different among stations as well as the pattern of presence. The dominant species were as follows: Cymbella affinis, C. minuta, C. silesiaca, C. turgidula, Fragilaria fragilarioides, Navicula cryptocephata, Nitzschia frustulum and Nitzschia sp. 1. Of those, Cymbella minuta showed the highest rate of occupation in the phytoplankton standing crops at all stations during the investigation periods. The species numbers of periphyton were 106 spp. Among those, the diatoms of the periphyton community were observed frequently rather than those of the phytoplankton community. The ecological indicator values showed ${eta}-mesosaprobous$ in saprobity and meso-eutyaphentic or close to eutraphentic in trophic state. There were not some considerable differences between the ecological indicator values by phytoplanktonic diatoms and periphytic diatoms.
 
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Phytoplankton;Periphyton;Standing crops;Ecological indicator values;The Somjin River;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.32, no.4, 1999³â, pp.319-319
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199910102467484)
¾ð¾î : Çѱ¹¾î
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