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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.32, no.1, 1999³â, pp.16-16
ÇѰ­ÇÏ·ùÀÇ È¯°æÇÐÀû ¿¬±¸ IV. µ¿¹°ÇöûũſÀÇ µ¿ÅÂ.
( Environmental Studies of the Lower Part of Han River IV. Zooplankton Dynamics )
±è¼¼È­;ÀÌÁøÈ¯; ¿ëÀδëÇб³ »ý¸í°úÇаú;»ó¸í´ëÇб³ »ý¹°Çаú;
 
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1995³â 6¿ùºÎÅÍ 1996³â 6¿ù±îÁö ÇѰ­ ÇÏ·ù 7°³ Á¤Á¡¿¡¼­ 6ȸ¿¡ °ÉÄ£ ÇöÀåÁ¶»ç¸¦ ÅëÇÏ¿© µ¿¹°ÇöûũſÀÇ °èÀýÀû º¯µ¿¿¡ ´ëÇÏ¿© ¿¬±¸ÇÏ¿´´Ù. Á¶»ç±â°£Áß ÃâÇöÇÑ µ¿¹°ÇöûũſÀº ÃÑ 70ºÐ·ù±º(taxa)À¸·Î ¿ø»ýµ¿¹° 3Á¾, À±Ãæ·ù 25Á¾, Áö°¢·ù 18Á¾, ¿ä°¢·ù 13Á¾, ´Ù¸ð·ù 1Á¾ µî 60Á¾ÀÌ Á¾ÁØÀ§±îÁö µ¿Á¤µÇ¾ú´Ù. °èÀýº°·Î´Â 1995³â 6¿ù¿¡ ÀüÁ¤Á¡¿¡¼­ $10{sim}27$ºÐ·ù±ºÀÌ ÃâÇöÇÏ¿© °¡Àå ´Ù¾çÇÑ ÃâÇö¾ç»óÀ» º¸¿´À¸¸ç È«¼ö ¹ß»ý Á÷ÈÄÀÎ 1995³â 7¿ù¿¡ °¡Àå ºó¾àÇÏ°Ô ÃâÇöÇÏ¿´´Ù. Á¤Á¡º°·Î´Â »ó·ù¿¡¼­ ÇÏ·ùº¸´Ù ¸¹Àº Á¾·ù°¡ ÃâÇöÇÏ´Â °æÇâÀ» º¸¿´´Ù. µ¿¹°ÇöûũſÀÇ ÃÖ´ëÃâÇö·®Àº ÀÔ¹æ¹ÌÅÍ´ç 44,317°³Ã¼(1996³â 6¿ù, Á¤Á¡ 7)¸¦ ±â·ÏÇÏ¿´À¸³ª °°Àº Á¤Á¡¿¡¼­ 1995³â 7¿ù¿¡´Â ÀüÇô ÃâÇöÇÏÁö ¾Ê¾Ò´Ù. °èÀýº°·Î´Â 1995, 1996³â ¸ðµÎ 6¿ù¿¡ ³ôÀº ÃâÇö·®À» ±â·ÏÇÏ¿´À¸¸ç 7¿ù°ú 1¿ù¿¡ ÃâÇö·®ÀÌ ±Þ°ÝÇÏ°Ô °¨¼ÒÇÏ¿´´Ù. ¿ìÁ¡Á¾À¸·Î´Â Áö°¢·ùÀÎ Daphnia galeata¿Í D. pulex ¹× Bosmina longirostris¿Í ¿ä°¢·ùÀÎ Canthocamptus carinatus, Cyclops vicious, Thermocyclops hyalinus ¹× ¿ä°¢·ù À¯»ý ÀÌ ÃâÇöÇÏ¿´´Ù. ´ÜÀÏÁ¾À¸·Î D. galeata°¡ ÃÖ´ë ÀÔ¹æ¹ÌÅÍ´ç 16,964°³Ã¼ÀÇ (1996³â 6¿ù, Á¤Á¡ 2)³ó¹ÐÇÑ °³Ã¼±ºÀ» Çü¼º ÇÏ¿´À¸¸ç D. pulex, B. longirostris, T. hyalinus, C. viciousµµ °¢°¢ ÀÔ¹æ¹ÌÅÍ ´ç 9,375 °³Ã¼, 7,250°³Ã¼, 6,714°³Ã¼ ¹× 5,772°³Ã¼ÀÇ °³Ã¼±ºÀÌ °üÂûµÇ¾ú´Ù. µ¿¹°Çöûũſ±ºÁýÀÇ Á¾´Ù¾ç¼ºÁö¼ö´Â 1996³â 5, 6¿ùÀ» Á¦¿ÜÇϰí´Â »ó·ù¿ªÀÎ Á¤Á¡ $1{sim}4$¿¡¼­ ÇÏ·ù¿ªÀÎ $5{sim}7$º¸´Ù ³ô°Ô ³ªÅ¸³µ´Ù.
Seasonal distribution of zooplankton was studied at seven selected stations in the lower part of the Han River during the period from June 1995 to June 1996 at two month intervals. Among 70 taxa of total zooplankton occurred, 60 taxa were identified to species, viz., three protozoans, 25 rotifers, 18 cladocerans, 13 copepods and one polycheat. In June 1995, a prosperity in species number was observed between $10{sim}27$ taxa through seven stations and became poor drastically just after a flood in July 1995. Spatially upper waters showed a prosperity in species number when compared with lower ones. Maximum abundance of $44,317;indiv./m^3$ was recorded at station 7 in June 1996, while no zooplankters were observed at the same station in July 1995. Seasonal distribution showed the high abundance in June both in 1995 and 1996, and low abundance in July and January. Three cladoceran species (Daphnia galeata, D. pulex and Bosmina longirostris) and three copepod species (Canthocamptus carinatus, Cyclops vicinus and Thermocyclops hyalinus) dominanted zooplankton community with high abundance. Maximum population density of $16,964;indiv./m^3$ was recorded by the single species of D. galeata (station 2 in June 1996). D. pulex ($9,375;indiv./m^3$), B. longirostris ($7,250;indiv./m^3$), T. hyalinus ($6,714;indiv./m^3$) and C. vicinus ($5,772;indiv./m^3$) also established dense populations, respectively. Spatial and temporal variation in the species diversity index indicated that the higher values of indices the upper stations except May and June 1996.
 
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Zooplankton;Han River;Spatial and temperal distribution;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.32, no.1, 1999³â, pp.16-16
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199910102424384)
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