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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.2, 2000³â, pp.162-175
¼¶Áø°­ ÇÏ·ù°è¿¡¼­ÀÇ ¿°ºÐµµ¿¡ µû¸¥ À±Ãæ·ù ±ºÁýÀÇ º¯È­
( Change of Rotifers Community by Salinity in the Lower Seomjin River System, Korea )
±è±¤¼ö;ÀÌÁ¾ºó;À̰ü½Ä;À¯Çüºó; Àü³²´ëÇб³ »ý¹°±³À°°ú;Àü³²´ëÇб³ »ý¸í°úÇкÎ;Àü³²´ëÇб³ »ý¹°±³À°°ú;Àü³²´ëÇб³ »ý¹°±³À°°ú;
 
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¼¶Áø°­ ÇÏ·ù°è¿¡ ¼­½ÄÇϰí ÀÖ´Â À±Ãæ·ùÀÇ ¿°ºÐ¿¡ µû¸¥ ºÐÆ÷¸¦ ÆÄ¾ÇÇϱâ À§ÇØ 1998³â 2¿ùºÎÅÍ 1999³â 7¿ù±îÁö 12°³ Á¤Á¡À» ¼±Á¤ÇÏ¿© ¸Å´Þ ¼öÆò äÁýÇÏ¿´´Ù. Á¶»ç±â°£ Áß ÃâÇöÇÑ À±Ãæ·ù´Â 27¼Ó 88Á¾À̾ú´Ù. ¿ùº° ÃâÇöÁ¾ÀÇ ºÐÆ÷·Î´Â 1998³â 11¿ù¿¡ °¡Àå ¸¹Àº 39Á¾ÀÌ ÃâÇöÇÏ¿´À¸¸ç, 1998³â 3¿ù¿¡ °¡Àå ÀûÀº 21Á¾ÀÌ ÃâÇöÇÏ¿´´Ù. ¿ìÁ¡Á¾Àº 32Á¾À̾úÀ¸¸ç ´ëÇ¥ÀûÀÎ ¿ìÁ¡Á¾Àº 4Á¾(Keratella cochlearis cochlearis, K. cochlearis f. tecta, Ascomorpha saltans saltans, Asplanchna (s. str.) priodonta priodonta)À̾ú´Ù. ¿°ºÐ¿¡ µû¸¥ ÃâÇö Á¾ÀÇ ºÐÆ÷¸¦ º¸¸é ´ã¼ö¿ª(0${sim}$0.5$%{o}$)¿¡¼­¸¸ ÃâÇöÇÑ Á¾Àº 36Á¾, ºó¿°±â¼ö¿ª°ú Áß¿°±â¼ö¿ª¿¡¼­¸¸ ÃâÇöÇÑ Á¾Àº °¢°¢ 3Á¾À̾úÀ¸¸ç, ´ã¼ö¿ª°ú ºó¿°±â¼ö¿ª¿¡ °ÉÃÄ ÃâÇöÇÑ Á¾Àº 15Á¾, ´ã¼ö¿ª, ºó¿°±â¼ö¿ª, Áß¿°±â¼ö¿ª¿¡ °ÉÃÄ ÃâÇöÇÑ Á¾Àº 27Á¾ ±×¸®°í Àü ¿°ºÐÀÇ ¹üÀ§¿¡¼­ ÃâÇöÇÑ Á¾Àº 2Á¾(Asplanchna (s. str.)priodonta priodonta, Synchaeta oblonga)À̾ú´Ù. ¿°ºÐ ºÐÆ÷¿¡ µû¸¥ »ý¹°·®Àº 15.1${sim}$20.0$%{o}$ ÀÇ ¹üÀ§¿¡¼­ Æò±Õ 16,259 ind./m$^{3}$À¸·Î ÃÖ°í·®À», 25${sim}$28.0$%{o}$ ÀÇ ¹üÀ§¿¡¼­ 1,273 ind./m$^{3}$À¸·Î ÃÖ¼Ò·®À» ±â·ÏÇÏ¿´´Ù. ´ã¼ö¿ª(Á¤Á¡ 1-Á¤Á¡ 4)¿¡¼­ À±Ãæ·ùÀÇ »ý¹°·®¿¡ ¿µÇâÀ» Áִ ȯ°æ¿äÀÎÀº BOD (74.32%), COD (72.15%), Àüµµµµ (69.77%), ¿°¼ÒÀÌ¿Â(65.87%) ±×¸®°í ¿±·Ï¼Ò a (58.27%)°¡ ¾çÀÇ ¿µÇâÀ¸·Î ÀÛ¿ëÇÏ¿´À¸¸ç, ±â¼ö¿ª(Á¤Á¡ 5-Á¤Á¡ 12)¿¡¼­´Â ¿°¼ÒÀÌ¿Â(9.11%), ÃÑ ÀÎ(7.67%), ¿±·Ï¼Ò a (6.20%)°¡ ¾çÀÇ ¿µÇâÀ» ³ªÅ¸³»¾ú´Ù.
The present study was carried out to clarify the distribution of rotifera with salinity variation during the period from February 1998 to July 1999. Rotifera consists of 27 genera and 88 species, from the maximum occurrence of 39 species in November, 1998 to the minimum of 21 species March, 1998. With 32 dominant species, Keratella cochlearis cochlearis, K. cochlearis f. tecta, Ascomorpha saltans saltans and Asplanchna (s. str.) priodonta priodonta occurred predominantly. Distribution of Rotifera related to salinity showed that 36 species occurred in the freshwater zone, 3 species in the mixo-oligohaline zone ($0.5{sim}5.0%_o$) and mixo-mesohaline zone ($5.1{sim}28.0%_o$) respectively, on the other hand 2 species (Asplanhna (s. str.) priodonta priodonta, Synchaeta oblonga) in all zones. Average abundance by salinity ranged from $1,273;ind./m^3$ ($25.0{sim}28.0%_o$ to $16,259;ind./m^3$ ($15.1{sim}20.0%_o$. The percentage composition calculated effect by stepwise multiple regression of the pearson correlation coefficient value of environmental factors and Rotifera abundance (station $1{sim}4$) revealed that it was 74.32% in BOD, 72.15% in COD, 69.77% in conductivity, 65.87% in $Cl^-$ and 58.27% in chlorophyll a. Also, (Station $5{sim}12$) revealed 9.11% in $Cl^-$, 7.67% in TP and 6.20% in chlorophyll a.
 
Ű¿öµå
Change;Community;Lower Seomjin River System;Rotifers;Salinity;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.2, 2000³â, pp.162-175
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317175594)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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