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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.2, 2000³â, pp.128-135
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´ëûȣ ÇÏ·ù¿¡¼ ȯ°æ¿äÀΰú Anabaena cylindrica »ýÀå¾ïÁ¦¼¼±ÕÀÇ °èÀýº° ºÐÆ÷ º¯È
( Seasonal Variations of Environmental Factors and Distribution of Anabaena cylindrica Growth-Inhibiting Bacteria in the Lower Daechung Reservoir ) |
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| ¼öÈÀÇ ¼Ò¸ê°úÁ¤¿¡¼ ¼ö°è¿¡ ºÐÆ÷ÇÏ´Â ¼¼±ÕÀÇ ¿ªÇÒÀ» È®ÀÎÇϱâ À§ÇÏ¿© ´ëûȣÀÇ ÁÖ¿ä Á¤Á¡¿¡¼ ȯ°æ¿äÀΰú Á¾¼Ó¿µ¾ç¼¼±Õ ±ºÁý, Anabaena cylindrica »ýÀå¾ïÁ¦¼¼±ÕÀÇ ¼öÃþº° ¿¬Áß º¯È¸¦ Á¶»çÇÏ¿´´Ù. Æò±Õ¼ö½ÉÀº Á¤Á¡ 1¿¡¼ 25.5m, Á¤Á¡ 2¿¡¼ 15.0m, Á¤Á¡ 3¿¡¼´Â 12.3m¿´´Ù. ¸ðµç Á¤Á¡¿¡¼ ¼öÃþº° ¿Âµµ´Â ÇÏÀý±â¸¦ Áß½ÉÀ¸·Î ÇÏ´Â ¿Â´ëÁö¹æ ¼ö°è¿¡¼ÀÇ ÀüÇüÀûÀÎ º¯È¸¦ ³ªÅ¸³»¾ú´Ù. ¿ëÁ¸»ê¼Ò·®Àº ÇÏÀý±â¿¡ ºÒ±ÔÄ¢ÇÏ°Ô º¯ÈÇϱä ÇßÁö¸¸ ¼ö¿Â°ú ºñ±³Àû ¹Ýºñ·ÊÀûÀÎ ¾ç»óÀ¸·Î º¯ÈÇÏ¿´´Ù. ´ëüÀûÀ¸·Î ¸ðµç Á¤Á¡¿¡¼ 5¿ù Ãʼø±îÁö Á¡Â÷ °¨¼ÒÇÏ´ø ¿ëÁ¸»ê¼Ò·®Àº ÀÌÈÄ¿¡´Â ±Þ°ÝÇÑ º¯È¸¦ ³ªÅ¸³»´Ù°¡ 9¿ù Áß¼ø ÀÌÈÄ¿¡´Â Á¡Â÷ Áõ°¡ÇÏ´Â ¾ç»óÀ» º¸¿´À¸¸ç, ƯÈ÷ ÀÌ·¯ÇÑ º¯È¾ç»óÀº Ç¥Ãþ¿¡¼ ´õ¿í ¶Ñ·ÇÇÏ¿´´Ù. ¿ëÁ¸»ê¼Ò·®ÀÌ ºÒ±ÔÄ¢ÀûÀ¸·Î Å« º¯È¸¦ º¸ÀÌ´Â ÇÏÀý±â¿¡´Â ´Ù¸¥ ¼öÃþ¿¡ ºñÇÏ¿© Ç¥Ãþ¿¡¼ ¿ëÁ¸»ê¼Ò·®ÀÌ ¸Å¿ì ³ô¾Ò´Ù. Ç¥Ãþ¿¡¼ÀÇ Å¬·Î·ÎÇÊ a³óµµ´Â ÇÏÀý±â¿¡ º¯µ¿ÆøÀÌ Å©°Ô ³ªÅ¸³µÀ¸¸ç, ¿ëÁ¸»ê¼Ò·®ÀÌ ³ôÀº ½Ã±â¿¡ ºñ±³Àû ³ôÀº ¼öÄ¡¸¦ ³ªÅ¸³»¾ú´Ù. Á¾¼Ó¿µ¾ç¼¼±ÕÀÇ ºÐÆ÷µµ´Â ¸ðµç ¼öÃþ¿¡¼ º½ºÎÅÍ °¡À»±îÁö´Â ´ëü·Î ³ô°Ô À¯ÁöµÇ´Ù°¡ ¼ö¿ÂÀÌ ±Þ°ÝÈ÷ Ç϶ôÇÏ´Â 9¿ù ÀÌÈÄ¿¡´Â ¸Å¿ì ³·Àº °³Ã¼±º Å©±â¸¦ º¸¿´´Ù. ƯÈ÷ ¸ðµç Ç¥Ãþ¿¡¼ ÀÌ·¯ÇÑ º¯È´Â µÎ¸£·¯Á³´Ù. Anabaena cylindrica »ýÀå¾ïÁ¦¼¼±ÕÀº 6¿ù ÀÌÀü¿¡´Â °ÅÀÇ ºÐÆ÷ÇÏÁö ¾Ê´Ù°¡ 7¿ù¿¡ ºÐÆ÷µµ°¡ Å« ÆøÀ¸·Î Áõ°¡ÇÏ¿´°í, ÀÌÈĺÎÅÍ´Â Á¤Á¡º°·Î »óÀÌÇÑ ºÐÆ÷ º¯È¸¦ º¸¿´´Ù. ¸ðµç Á¤Á¡¿¡¼ A. cylindrica»ýÀå¾ïÁ¦¼¼±ÕÀÇ ºÐÆ÷°ªÀÌ ³ô¾Ò´ø 7¿ù°ú 10¿ù¿¡´Â Ç¥Ãþº¸´Ù´Â ÁßÃþ°ú ÇÏÃþ¿¡¼ ´õ ¸¹Àº »ýÀå¾ïÁ¦¼¼±ÕÀÌ °ËÃâµÇ¾ú´Âµ¥, ÀÌ·¯ÇÑ °á°ú´Â ¼÷ÁÖÀÎ A. cylindricaÀÇ È°·ÂÀÌ »ó´ëÀûÀ¸·Î ¶³¾îÁú ¶§ ¾ïÁ¦¼¼±ÕÀÇ È°¼ºÀÌ ³ô¾ÆÁö´Â °ÍÀ» ¾Ï½ÃÇÑ´Ù. ÀÌ»óÀÇ °á°ú·ÎºÎÅÍ ÀÚ¿¬¼ö°è¿¡¼ ¼¼±ÕÀº ³²Á¶¼¼±Õ ºÐÆ÷¿¡ ´ëÇÑ Á¶ÀýÀڷμÀÇ ¿ªÇÒÀ» Çϸç, ƯÈ÷ ³²Á¶¼¼±ÕÀÇ È°·ÂÀÌ ¶³¾îÁú ¶§ ±× ¿ªÇÒÀÌ ´õ¿í µÎµå·¯Áø´Ù´Â »ç½ÇÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.¿Â(9.11%), ÃÑ ÀÎ(7.67%), ¿±·Ï¼Ò a (6.20%)°¡ ¾çÀÇ ¿µÇâÀ» ³ªÅ¸³»¾ú´Ù.¸®°í NO$_{2}$-N (19.75%)°¡ ¾çÀÇ ¿µÇâÀ», NO$_{3}$-N (28.30%)°¡ À½ÀÇ ¿µÇâÀ» ¹ÌÄ¡°í ÀÖÀ¸¸ç, ±â¼ö¿ª(Á¤Á¡ 5${sim}$Á¤Á¡ 12)¿¡¼´Â ¼ö¿Â(29.49%), NO$_{3}$-N (28.27%) ±×¸®°í NO$_{2}$-N (22.87%)°¡ ¾çÀÇ ¿µÇâÀ» ¹ÌÄ¡°í ÀÖ´Â ¹Ý¸é, Àüµµµµ (30.18%)¿Í DO (13.53%)´Â À½ÀÇ ¿µÇâÀ» ¹ÌÄ¡°í ÀÖ¾ú´Ù. º¸ÀδÙ.¾÷¿ë Àú¼öÁöÀÇ ¼öÁú¿¹Ãø¿¡ ÀÖ¾î´Â º¹ÀâÇÑ À¯Ãâ¸ðÇüÀ̳ª À¯¿ª¸ðÇü, È£¼Ò¼öÁú¸ðÇü µîÀ» »ç¿ëÇϱ⺸´Ù´Â º» ¿¬±¸¿¡¼¿Í¡¡°°ÀÌ ±âÁ¸ÀڷḦ ºÐ¼®ÇÏ¿© µµÃâÇÑ °æÇèÀû °ü°è½ÄÀ» »ç¿ëÇÏ¸é ºñ±³Àû ÀûÀº ³ë·ÂÀ¸·Îµµ »ó´çÈ÷ ½Å·Ú¼ºÀÖ°Ô ¿¹ÃøÇÏ¿© ¼öÁú°ü¸®¿¡ µµ¿òÀÌ µÉ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.°¡ Á¤ÈÈ¿À²°úÀÇ »ó°ü°ü°èº¸´Ù Á»´õ À¯ÀǼº ÀÖ°Ô ³ªÅ¸³µ´Ù. À̰ÍÀº ³ôÀº ¼ö¸®ÇÐÀû ºÎÇÏÁ¶°ÇÀÌ ¿µ¾ç¿°·ù µîÀÇ Á¤ÈÈ¿À²¿¡´Â Å©°Ô ¿µÇâÀ» ¹ÌÄ¡Áö ¾ÊÀ½À» º¸¿©ÁÖ°í ÀÖÀ¸¸ç, µû¶ó¼ ºñ±³Àû ³·Àº ³óµµÀÇ ¿µ¾ç¿°·ù¸¦ °¡Áö°í ÀÖ°í, ¸¹Àº 󸮼ö·®À» ¿ä±¸ÇÏ´Â ºÎ¿µ¾çÈµÈ Àú¼öÁöÀÇ ¼öÁú°³¼±À» À§Çؼ´Â ³ôÀº ¼ö¸®ÇÐÀû ºÎÇÏÁ¶°Ç¿¡¼ ½Ã°£´ç Á¤È·®À» ´Ã¸®´Â °ü¸®¹æ¹ýÀÌ °æÁ¦ÀûÀ̸ç, ÀÌ¿¡ ÃÊÁ¡À» ¸ÂÃß¾î ³ª°¡¾ß ÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù.µµ·Î °ËÃâµÇ¾î À̸¦ °í·ÁÇÑÁ¤¼ö°øÁ¤ÀÇ °ü¸®°¡ ÇÊ¿äÇϸ®¶ó »ý°¢µÈ´Ù.$yr^{-1}$)ÀÇ 71%°¡ °¨¼ÒµÇ¾î¾ß ÇÒ Çʿ伺ÀÌ Á¦±âµÇ¾ú´Ù. ¶ÇÇÑ ¿©¸§Ã¶ ½ÉÃþ »ê¼Ò °í°¥ÀÌ ¾ß±âµÇ¾ú°í, ÀÌ ½Ã±â¿¡ ÅðÀû¹°·Î ¿ëÃâµÈ ÀÎÀÌ ½Ä¹°Çöûũſ ¼ºÀå¿¡ ÀÌ¿ëµÉ ¼ö Àֱ⶧¹®¿¡ ÅðÀû¹°¿¡ ´ëÇÑ °ü¸®µµ ¼öÇàµÉ Çʿ䰡 ÀÖ´Ù.rsity)Áö¼ö´Â 2000³â 7¿ù¿¡ 2.22·Î °¡Àå ³ô¾ÒÀ¸¸ç, »ý¹°·®µµ Á¶»ç±â°£Áß 36,640 cells ${cdot};mL^{-1}$·Î °¡Àå ¸¹¾Ò´Ù.ÀÇ Èı⿡ ±¤(ÎÃ)À» Á¶»ç(ðÎÞÒ)ÇÏ¸é ¿ø |
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| The authors surveyed the seasonal variations of environmental factors, the distributions of heterotrophic bacteria and Anabaena cylindrica growth-inhibiting bacteria at each water layer in Daechung Reservoir to verify the role of bacteria during the extinction of bloom. Average water depth at site 1, 2, and 3 were 25.5 m, 15.0 m and 12.3 m, respectively. Water temperature showed a typical pattern seasonally. The variation of DO was relatively inverse proportional to that of water temperature, although it was irregular during summer time. DO decreased gradually to early May, fluctuated sharply after then, and followed by gradual increasement after middle of September. This variation pattern was notable at surface layer. There was remarkable difference in DO concentraion between surface layer and the other water layers during the period in which DO irregulary varied. The variation range of chlorophyll-a concentraion at surface layer in summer time was broad, and it was relatively high when DO was high. The population size of heterotrophic bacteria was high from Spring to Autumn, an declined after September when the water temperature droped rapidly. Especially this variation pattern was prominent at the surface layer. Bacteria that inhibit the growth of A. cylindrica was almost not detected by June, and its distribution increased in July. Afterward, it showed different variation pattern between each site. The distribution of A. cylindrica growth-inhibiting bacteria was higher at the middle and bottom layer than the surface layer in July and October, when it was larger at all sites for the study period. This result suggests that the antagonistic bacteria exhibit higher activity when host activity drops. These results also suggest that natural water bacteria control the distirbution of cyanobacteria, especially its activity as controller is remarkable when cyanobacterial growth declines. |
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| Ű¿öµå |
| Heterotrophic bacteria;Environmental factors;Anabaena cylindrica;Growth-Inhibition; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.2, 2000³â, pp.128-135
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317175558)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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