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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.4, 2004³â, pp.406-410
´ï Àú¼öÁö¿¡¼­ alkaline phosphatase Ȱ¼ºÀÇ ¼öÁ÷º¯È­¿Í ¹Ì»ý¹° ¿äÀεé°úÀÇ »ó°ü°ü°è
( Vertical Profiles of Alkaline Phosphatase Activity in Dam Reservoirs and its Relation with Microbial Parameters )
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2000³â µÎ ´ï Àú¼öÁö¿Í À¯ÀÔ ÇÏõ¿¡¼­ ¿ùº° alkaline phosphatase activity (APA)À» ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ 2001³â ¿©¸§ µ¿¾ÈÀº ÇÑ ´ï Àú¼öÁö¿¡¼­ APAÀÇ ¼öÁ÷º¯È­¿Í °ü·ÃµÈ ¿äÀεéÀ» Á¶»çÇÏ¿´´Ù. APA´Â ¿©¸§ µ¿¾È Àú¼öÁö Ç¥Ãþ¿¡¼­ »ó´ëÀûÀ¸·Î ³ô°Ô ³ªÅ¸³µÀ¸³ª ½ÉÃþ¿¡¼­´Â °ÅÀÇ º¯È­°¡ ¾ø¾ú´Ù. ±×·¯³ª ¹Ù´ÚÃþ ¹Ù·Î À­ºÎºÐ¿¡¼­´Â APAÀÇ ¹Ì¹ÌÇÑ Áõ°¡ °üÂûµÇ¾ú´Ù. APAº¯È­¿Í ¿ëÁ¸¹«±âÀÎ ³óµµ º¯È­¿Í´Â »ó°ü°ü°è°¡ ¾ø¾úÀ¸¸ç, ÀÌ °á°ú Á¶»ç ´ë»ó Àú¼öÁö¿¡¼­ APA´Â ÀÎ À̿뼺ÀÇ »óŸ¦ ÀǹÌÇÏÁö´Â ¾Ê´Â °ÍÀ¸·Î ÃßÁ¤µÇ¾ú´Ù. ½Ã·áÀÇ size-fractionation ºÐ¼® °á°ú, Á¶»ç ´ë»ó Àú¼öÁöµé¿¡¼­ APA´Â $0.4{mu}m$º¸´Ù Å« ÀÔÀڵ鿡 ÈíÂøµÈ ¹Ý¸é, À¯ÀÔ ÇÏõ¿¡¼­´Â ¿ëÁ¸ÇüÅ·ΠÁ¸ÀçÇÏ´Â °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. Àú¼öÁö À¯±¤Ãþ¿¡¼­ ¿±·Ï¼Ò-aÀÇ ³óµµ¿Í APA°£¿¡ À¯ÀÇÇÑ ¾çÀÇ »ó°ü¼ºÀÌ ³ªÅ¸³µ´Ù. ¹«±¤Ãþ¿¡¼­ APA´Â ¼¼±ÕÀÇ colony count¿Í ¾çÀÇ »ó°ü¼ºÀ» ³ªÅ¸³ÂÀ¸³ª ÃÑ ¼¼±Õ¼ö¿Í´Â »ó°ü¼ºÀÌ ¾ø¾ú´Ù.
The alkaline phosphatase activity (APA) of two dam reservoirs and inflowing streams were measured monthly in 2000. During summer months in 2001, the vertical profiles of APA and related parameters were also examined in one of the reservoirs. The APA was relatively high during the summer season in the epilimnion while it was almost invariable in the hypolimnion. A small increase in APA was observed at just above the bottom. The APA fluctuation was independent of the concentration of soluble reactive phosphorus. It was assumed that APA is not indicative of the phosphorus availability status. An examination of size-fractionated samples suggested that APA in reservoirs was attached to particles larger than $0.4{mu}m$, whereas in streams it existed in a dissolved form. There was a positive significant correlation between chlorophyll a concentration and APA in the photic zone. In the aphotic zone, APA correlated positively with the colony count of heterotrophic bacteria, but not with microscopic total bacterial counts.
 
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alkaline phosphatase activity;dam reservoir;photic and aphotic zones;chlorophyll a;heterotrophic bacteria;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.4, 2004³â, pp.406-410
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317183504)
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