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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.33, no.2, 2000³â, pp.176-186
¼¶Áø°­ ÇÏ·ù°èÀÇ ¿ä°¢·ù ±ºÁý¿¡ °üÇÑ »ýÅÂÇÐÀû ¿¬±¸
( Ecological Study of Copepoda Community in the Lower Seomjin River System, Korea )
±è±¤¼ö;ÀÌÁ¾ºó;À̰ü½Ä;°­Àå¿ø;À¯Çüºó; Àü³²´ëÇб³ »ý¹°±³À°°ú;Àü³²´ëÇб³ »ý¸í°úÇкÎ;Àü³²´ëÇб³ »ý¹°±³À°°ú;Àü³²´ëÇб³ »ý¹°±³À°°ú;Àü³²´ëÇб³ »ý¹°±³À°°ú;
 
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¼¶Áø°­ ÇÏ·ù°è ¿ä°¢·ù ±ºÁýÀÇ »ýÅÂÇÐÀû ¿¬±¸¸¦ À§ÇÏ¿© 1998³â 2¿ùºÎÅÍ 1999³â 7¿ù±îÁö ¸Å´Þ äÁýÇÏ¿´´Ù. º» ¿¬±¸ ¼ö¿ª¿¡¼­ ¿ä°¢·ù´Â 21¼Ó 32Á¾·Î Á¶»çµÇ¾úÀ¸¸ç, 1998³â 5¿ù¿¡ °¡Àå ¸¹Àº 15Á¾, 1998³â 11¿ù¿¡ °¡Àå ÀûÀº 2Á¾ÀÌ ÃâÇöÇÏ¿´´Ù. Á¤Á¡º°·Î´Â Á¤Á¡ 12¿¡¼­ 22Á¾À¸·Î °¡Àå ¸¹¾ÒÀ¸¸ç, Á¤Á¡ 1, 2, 3¿¡¼­´Â À¯»ý¸¸ ÃâÇöÇÏ¿´´Ù. ¿ùº° Æò±Õ »ý¹°·®Àº 177 ind./m$^{3}$(98³â 11¿ù)${sim}$8.330 ind./m$^{3}$(99¿ù 6¿ù)¿¡¼­ º¯µ¿ÇÏ¿´´Ù. ¼ö¿Â¿¡ µû¸¥ Á¾ ºÐÆ÷´Â 20.1${sim}$25.0$^{circ}C$ ¹üÀ§¿¡¼­ °¡Àå ¸¹Àº 20Á¾ÀÌ ÃâÇöÇÏ¿´À¸¸ç, 0.0${sim}$5.0$^{circ}C$ ¹üÀ§¿¡¼­´Â À¯»ý½Ã±â¸¸ ³ªÅ¸³µ´Ù. ¿°ºÐµµ¿¡ µû¸¥ Á¾ Á¶¼ºÀ¸·Î´Â 20.1${sim}$25.0$%{o}$ ¹üÀ§¿¡¼­ 19Á¾, 0.0${sim}$5.0$%{o}$ ¹üÀ§¿¡¼­ 4Á¾À¸·Î °¢°¢ ÃÖ°í, ÃÖÀú ÃâÇöºÐÆ÷¸¦ º¸¿´´Ù. ºÎ¿µ¾çÈ­ ´Ü°è(TSIm)¿¡ µû¸¥ Á¾ ºÐÆ÷´Â ºó¿µ¾çÈ­ ´Ü°è¿¡¼­ 25Á¾À̾úÀ¸¸ç, ºÎ¿µ¾çÈ­ ´Ü°è¿¡¼­´Â 9Á¾ÀÌ ÃâÇöÇÏ¿´´Ù. pH¿¡ µû¸¥ Á¾ ºÐÆ÷·Î´Â 7.6${sim}$8.0 ¹üÀ§¿¡¼­ 20Á¾À¸·Î °¡Àå ¸¹Àº ÃâÇöÀ» º¸¿´Áö¸¸ 9.1${sim}$9.5 ¹üÀ§¿¡¼­´Â ÃâÇöÁ¾ÀÌ ¾ø¾ú´Ù. ±×¸®°í ¿ëÁ¸»ê¼Ò·®¿¡ µû¸¥ ºÐÆ÷·Î´Â 6.5${sim}$7.5 mg/l ¹üÀ§¿¡¼­ 22Á¾, 14.6${sim}$15.5 mg/l ¹üÀ§¿¡¼­ 1Á¾ÀÌ ÃâÇöÇÏ¿© °¢°¢ ÃÖ°í, ÃÖÀú ÃâÇö ºÐÆ÷¸¦ ³ªÅ¸³»¾ú´Ù. °¢ ȯ°æ¿äÀÎÀÌ ¿ä°¢·ù »ý¹°·®¿¡ ¹ÌÄ¡´Â ¿µÇâÀ¸·Î´Â ´ã¼ö¿ª(Á¤Á¡ 1${sim}$Á¤Á¡ 4)¿¡¼­ COD(15.49%), Cl$^{-}$ (25.86%) ±×¸®°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.
The present study was carried out to clarify the structure and dynamics of copepod community and the relationship between this community and environmental factors during the period from February 1998 to July 1999. Copepods consists of 21 genera and 32 species, monthly variations of number of species were 15 species in May, 1998 and 2 species November, 1998. The number of species were 22 species in station 12 and station 1, 2, 3 occurred nauplii of copepoda only. Average abundance ranged from $8,330;ind./m^3$ (in June, 1999) to $177;ind./m^3$ (in November, 1998). Relationships between water temperature and number of species were as follows: 20 species occurred from 20.1 to $25.0^{circ}C$ and nuplii of copepoda only occurred from 0.0 to $5.0^{circ}C$. The number of species by salinity range were 19 species in $20.1{sim}25.0%_o$ and 9 species in $0{sim}0.5%_o$. The number of species by trophic state index (TSIm) of chlorophyll a were 25 species in oligotrophic state and 9 species in eutrophic state. Relationships between pH and number of species were as follows: 20 species occurred from 7.6 to 8.0 and from 9.1 to 9.5 was none. The number of species by DO range were 22 species in 6.5 to 7.5 mg/l and 1 species in 14.5 to 15.5 mg/l. The percentage calculated effect by stepwise multiple regression of the pearson correlation coefficient value of environmental factors and copepoda abundance (station 1-station 4) revealed that positive effect was 15.49% in COD, 25.86% in $Cl^-$, 19.75% in $NO_2-N$ and negative effect was 28.30% in $NO_3-N$. Also, Positive effect (station 5-station 12) revealed that 29.49% in water temperature, 28.27% in $NO_3-N$, 22.87% in $NO_2-N$ and negative effect was 30.18% in conductivity and 13.53% in DO.
 
Ű¿öµå
Copepoda;Community;Ecology;Enviromental factors;Lower Seomjin River System;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.33, no.2, 2000³â, pp.176-186
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200018317175604)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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