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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.1, 2004³â, pp.26-35
ȸ¾ß´ï Àú¼öÁö¿¡¼­ ¹°¸® ${cdot}$ È­ÇÐÀû ȯ°æ¿äÀο¡ µû¸¥ ½Ä¹°Çöûũſ°ú ¼¼±Õ ±ºÁýÀÇ º¯È­
( Community Dynamics of Phytoplankton and Bacteria as Affected by Physicochemical Environmental factors in Hoeya Dam Reservoir )
±è´ë±Õ;ÃÖ¾Ö¶õ;ÀÌÇý°æ;±Ç¿À¼·;±èÁ¾¼³; ¿ï»ê´ëÇб³ È­ÇÐ »ý¸í°úÇкÎ;ÀÎÁ¦´ëÇб³ ȯ°æ½Ã½ºÅÛÇкÎ;ÀÎÁ¦´ëÇб³ ȯ°æ½Ã½ºÅÛÇкÎ;ÀÎÁ¦´ëÇб³ ȯ°æ½Ã½ºÅÛÇкÎ;¿ï»ê´ëÇб³ È­ÇÐ »ý¸í°úÇкÎ;
 
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¿ï»ê¿¡ À§Ä¡ÇÑ »ó¼ö¿øÀΠȸ¾ß´ï Àú¼öÁö¿¡¼­ ¹°¸® ${cdot}$ È­ÇÐÀû ȯ°æ¿äÀο¡ µû¸¥ ½Ä¹°ÇöûũſÀÇ º¯µ¿ ¹× ¼¼±Õ¼ö¿Í¼¼±ÕÇÐÀû ¼öÁúÀÇ º¯È­¸¦ ÆÄ¾ÇÇϰíÀÚ Àú¼öÁö³» 3°³ ÁöÁ¡ÀÇ Ç¥Ãþ°ú ÀúÃþ¿¡¼­ 2001³â 4¿ù¿¡¼­ 10¿ù±îÁö 2${sim}$4ÁÖÀǰ£°ÝÀ¸·Î ä¼öÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. Á¶»ç±â°£ µ¿¾È Åõ¸íµµ´Â0.4${sim}$3.5m, Ç¥Ãþ¿¡¼­ ¼ö¿Â 10.2${sim}$$10^{circ}C$,¿ëÁ¸»ê¼Ò 5.5${sim}$12.4 mg $L^{-1}$, PH 7.3${sim}$9.6, $BOD_5$ 0.8 ${sim}$ 5.0 mg $L^{-1}$, $COD_{Mn}$3.7${sim}$10.0 mg $L^{-1}$, Chl-a 8.9~60.9 mg $m^{-3}$, ÀúÃþ¿¡¼­ ¼ö¿Â 7.2${sim}$$28.9^{circ}C$, ¿ëÁ¸»ê¼Ò 0.6${sim}$9.5 mg $L^{-1}$, pH 7.1${sim}$9.3, $BOD_5$ 0.8~4.5 mg $L^{-1}$, $COD_{Mn}$ 3.9${sim}$10.0 mg $L^{-1}$, Chl-a 4.3${sim}$81.9 mg $m^{-3}$ÀÇ ¹üÀ§¿´´Ù. ½Ä¹°Çöûũſ °³Ã¼¼ö´Â Ç¥Ãþ 7.4${pm}10^2{sim}2.6{pm}10^5$ cells $mL^{-1}$, ÀúÃþ 2.5${pm}10^2{sim}2.4{pm}10^4$ CelI $mL^{-1}$ÀÇ ¹üÀ§¿´À¸¸ç, ¼ö¿Â ¹× Chl-a¿Í ¾çÀÇ »ó°ü°ü°è¸¦ º¸¿´´Ù. 4¿ù¿¡´Â Stephanodiscus¼Ó, 5¿ù¿¡´Â Oscillatoria¼ÓÀÌ ¿ìÁ¡ÇÏ¿´°í, 6¿ù¿¡¼­ 9¿ù ÃÊ¿¡ °ÉÃÄAphanizomenon, Microcystis, AnabaenaÀÇ ´ë¹ß»ýÀÌ °üÂûµÇ¾úÀ¸¸ç, 9¿ù Áß¼ø ÀÌÈÄ ´Ù½Ã Stephanodiscus¼Ó°ú Aulacoseira¼ÓÀÌ ¿ìÁ¡ÇÏ¿´´Ù. ÃÑ ¼¼±Õ¼ö´Â 1.73${pm}10^4{sim}1.68{pm}10^5$cells $mL^{-1}$ÀÇ ¹üÀ§·Î Ç¥ÃþÀÌ ÀúÃþº¸´Ù ³ô¾ÒÀ¸¸ç, ¼ö¿Â ¹× ½Ä¹°Çöûũſ °³Ã¼¼ö¿Í´Â Ç¥Ãþ¿¡¼­ ¾çÀÇ »ó°ü°ü°è°¡ ÀÖ¾ú´Ù. ÀϹݼ¼±Õ¼ö´Â 30${sim}4.1{pm}10^3$ CFU $mL^{-1}$ÀǹüÀ§·Î, a ÁöÁ¡ÀÌ ´Ù¸¥ µÎ ÁöÁ¡º¸´Ù ³ô¾Ò°í, ÀúÃþÀÌ Ç¥Ãþº¸´Ù ³ô¾Æ ÃÑ ¼¼±Õ¼ö¿Í´Â ´Ù¸¥ ¾ç»óÀ» º¸¿´À¸¸ç, ÀúÃþ¿¡¼­ $BOD_5$¹× $NO^3;^-$-N°ú ¾çÀÇ »ó°ü°ü°è¸¦ ³ªÅ¸³»¾ú´Ù. ºÐ¿ø¼º ´ëÀå±Õ±º°ú ºÐ¿ø¼º ¿¬¼â»ó±¸±ÕÀÇ °æ¿ì aÁöÁ¡ÀÌ ´Ù¸¥ µÎ ÁöÁ¡º¸´Ù ¿À¿°ÀÇ Á¤µµ°¡ ´õ ½ÉÇß°í, ÀúÃþÀÌ Ç¥Ãþº¸´Ù ƯÈ÷ ³ô¾ÒÀ¸¸ç, ºñ°¡ ¿Â ÀÌÈÄ¿¡´Â Ãë¼öžÀÌ À§Ä¡ÇÑ cÁöÁ¡ÀÇ ÀúÃþ¿¡¼­µµ »ó´çÇÑ ³óµµ·Î °ËÃâµÇ¾î À̸¦ °í·ÁÇÑÁ¤¼ö°øÁ¤ÀÇ °ü¸®°¡ ÇÊ¿äÇϸ®¶ó »ý°¢µÈ´Ù.
We investigated the effect of physicochemical environmental factors on the community dynamics of phytoplanktons and bacteria at the Hoeya Dam Reservoir, a drinking water reservoir for Ulsan city. Water samples were collected and analyzed every two to four weeks at three sites along the reservoir from April to October, 2001. During the study period, the Secchi depths were between 0.4 and 3.5 m. At the surface layer of water column, temperature ranged 10.2 ~ $32.0^{circ}C$, pH 7.3${sim}$9.6, dissolved oxygen 5.5 ${sim}$ 12.4 mg $L^{-1}$, $BOD_5$ 0.8 ${sim}$ 5.0 mg $L^{-1}$, $COD_{Mn}$ 3.7 ${sim}$ 10.0 mg $L^{-1}$, and Chl-a 8.9 ${sim}$ 60.9 mg $m^{-3}$. At the bottom layer, temperature varied 7.2 ${sim}$ $28.9^{circ}C$, pH 7.1 ${sim}$ 9.3, dissolved oxygen 0.6 ${sim}$ 9.7 mg $L^{-1}$, $BOD_5$ 0.8 ${sim}$ 4.5 mg $L^{-1}$, $COD_{Mn}$ 3.9 ${sim}$ 10.0 mg $L^{-1}$, and Chl-a 4.3 ${sim}$ 81.9 mg $m^{-3}$. The numbers of phytoplanktons were 7.4${pm}10^2{sim}2.6{pm}10^5$ cells $mL^{-1}$ at surface and 2.5${pm}10^2{sim}2.4{pm}10^4$ cells $mL^{-1}$ at bottom, and were positively correlated with water temperature and Chl- a concentration. Genus Stephanodiscus and genus Oscillatoria dominated on April and on May, respectively. Cyanobacterial blooms of Aphanizomenon, Microcystis, Anabaena were observed from June to early September, and thereafter Stephanodiscus and Aulacoseiral dominated again. Total microbial counts ranged 1.73${pm}10^4{sim}1.68{pm}10^5$ cells $mL^{-1}$, and were positively correlated with water temperature and phytoplankton counts at surface water. Heterotrophic plate counts (HPCs) ranged 30${sim}4.1{pm}10^3$ CFU $mL^{-1}$, and were positively correlated with $BOD_5$ and $NO^3;^-$-N concentration at bottom water. Unlike the total microbial counts, the numbers of fecal coliforms and fecal streptococci as well as HPCs were higher at the bottom than the surface layer and were highest at the upper a site among the three sampling sites. Since the concentrations of fecal coliforms and streptococci were still high at the bottom of site c, where intake for water treatment plant is located, it appeared that special management of water treatment processes may be needed especially after strong rainfall.
 
Ű¿öµå
phytoplankton;bacterial community;water quality;Hoeya Dam Reservoir;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.1, 2004³â, pp.26-35
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317182375)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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