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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.26, no.4, 2008³â, pp.392-401
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ÀΰøÈ£¼ö(¿ÁÁ¤È£)³» µ¿¹°Çöûũſ µ¿Å ¹× ±ºÁý ¿©°úÀ²ÀÇ ¼öÁ÷Àû º¯È
( The Vertical Changes of Zooplankton Dynamics and Community Filtration Rate in the Artificial Lake (Okjeong Lake) ) |
| ¶ó±àȯ;ÀÌÇпµ;±èÇö¿ì; ¼øÃµ´ëÇб³ ȯ°æ±³À°°ú;Àü³²´ëÇб³ »ý¹°Çаú;¼øÃµ´ëÇб³ ȯ°æ±³À°°ú;
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| ÀΰøÈ£¼ö(¿ÁÁ¤È£)¿¡¼ 2004³â 11¿ùºÎÅÍ 2007³â 6¿ù±îÁö ¿ù 1ȸ °£°ÝÀ¸·Î ¼öÃþº°(Ç¥Ãþ: 0$sim$5 m, ÁßÃþ: 4$sim$5 m, ÇÏÃþ: 8$sim$10 m)À°¼öÇÐÀû ¿äÀΰú µ¿¹°Çöûũſ±ºÁý µ¿Å ¹× ½Ä¹°Çöûũſ¿¡ ´ëÇÑ ¼·½Ä ±â¿©À²À» ÆÄ¾ÇÇÏ¿´´Ù. Á¶»ç±â°£ µ¿¾È ¼öÃþº° Æò±Õ ¼ö¿ÂÀº °¢°¢ »óÃþ 15.2$pm$7.8$^{circ}C$, ÁßÃþ 14.5$pm$7.4$^{circ}C$ ±×¸®°í ÇÏÃþÀº 13.0$pm$6.2$^{circ}C$ (n=30)¸¦ ³ªÅ¸³»¾ú´Ù Chl. ${alpha}$ ³óµµ¸¦ Á¦¿ÜÇÑ ±âÃÊ ÀÌÈÇк¯¼ö(¿ëÁ¸»ê¼Ò·®, pH, Àü±âÀüµµµµ ¹× ʵµ)ÀÇ °æ¿ì °¢ ¼öÃþº°·Î À¯»çÇÏ¿´´Ù. Chl. ${alpha}$ ³óµµ´Â »óÃþ¿¡¼ Æò±Õ 21.4${mu}g$ L$^{-1}$·Î °¡Àå ³ô¾Ò´ø ¹Ý¸é, ÁßÃþ°ú ÇÏÃþ¿¡¼´Â °¢°¢ 4.3 ${mu}g$ L$^{-1}$¿Í 3.5 ${mu}g$ L$^{-1}$·Î ³·¾Ò´Ù. Æò±Õ Secchi¼ö½ÉÀº 261 cm(n=30)·Î ³ªÅ¸³µ´Ù. Á¶»ç±â°£ µ¿¾È ÃâÇöÇÑ µ¿¹°Çöûũſ Á¾¼ö´Â ÃÑ 45Á¾À¸·Î, À±Ãæ·ù 28Á¾, Áö°¢·ù 12Á¾ ±×¸®°í ¿ä°¢·ù 5Á¾ÀÌ µ¿Á¤µÇ¾ú´Ù. À±Ãæ·ùÀÇ Æò±Õ ¹Ðµµ°¡ °¡Àå ³ô¾ÒÀ¸¸ç (Æò±Õ 124$pm$232 °³Ã¼ L$^{-1}$, n=90), Áö°¢·ù¿Í ¿ä°¢·ùÀÇ Æò±Õ ¹Ðµµ´Â »ó´ëÀûÀ¸·Î ³·¾Ò´Ù(°¢°¢ 22$pm$56 °³Ã¼ L$^{-1}$, 13$pm$30 °³Ã¼ L$^{-1}$). Àüü µ¿¹°Çöûũſ dzºÎµµ´Â ´ÊÀ½ºÎÅÍ ¿©¸§Ã¶¿¡ °ÉÃÄ Àü ¼öÃþ¿¡¼ Áõ°¡ÇÑ ÈÄ °¨¼ÒÇÏ¿© °Ü¿ï µ¿¾È ³·°Ô À¯ÁöµÇ¾ú´Ù. ¿¬Æò±Õ µ¿¹°ÇöûũſÀÇ ½Ä¹°Çöûũſ¿¡ ´ëÇÑ ¿©°ú ¼·½Ä·üÀº ÇÏÃþÀÌ »óÃþ°ú ÁßÃþº¸´Ù ³ô¾Ò´Ù (»óÃþ: 44.4$pm$107.8, ÁßÃþ: 95.1$pm$198.6 ±×¸®°í ÇÏÃþ: 158.2$pm$436.4 mL L$^{-1}$ day$^{-1}$). ÁÖ¿ä µ¿¹°Çöûũſ ±ºÁý Áß ¿ä°¢·ùÀÇ »ó´ë ±ºÁý ¿©°úÀ²(RCFR, %)ÀÌ 50.2$sim$54.8%·Î À±Ãæ·ù(8.0$sim$17.6%)¿Í Áö°¢·ù(27.7$sim$36.3%)º¸´Ù ´õ ³ô¾Ò´Ù. °èÀý¿¡ µû¸¥ RCFRÀÇ º¯È°¡ °üÂûµÇ¾úÀ¸¸ç À±Ãæ·ùÀÇ RCFRÀº °Ü¿ï¿¡(44.6%, n=9) ³ô¾Ò°í, Áö°¢·ù´Â ¿©¸§¿¡ (58.0%, n=7)¿¡ °¡Àå ³ô¾Ò´Ù. º½°ú °¡À»¿¡´Â ¿ä°¢·ùÀÇ RCFRÀÌ Àü ¼öÃþ¿¡¼ °¡Àå ³ô¾Ò´Ù(º½: 67.4%, n=9, °¡À»: 74.4%, n=5). |
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| The vertical changes (upper layer: 0$sim$0.5 m, middle layer: 4$sim$5 m and lower layer: 8$sim$10 m) of the limnological variables, zooplankton dynamics and community filtration rate on the phytoplankton were evaluated monthly intervals from November 2004 to June 2007 at the artificiallake (Okjeong Lake). During the study, the annual mean of water temperatures were 15.2$pm$7.8$^{circ}C$ (upper layer), 14.5$pm$7.4$^{circ}C$ (middle layer) and 13.0$pm$6.2$^{circ}C$ (lower layer), respectively (n=30). The vertical variations of most limnological parameters (DO, pH, conductivity and turbidity) were fairly similar, except for chl.-${alpha}$ concentration. Annual mean of chl.-${alpha}$ concentration was highest at the upper layer (21.4 ${mu}g$ L$^{-1}$), while annual means of concentrations were low at the middle layer and lower layer (4.3 ${mu}g$ L$^{-1}$ and 3.5 ${mu}g$ L$^{-1}$, respectively). Annual mean of Secchi depth was 261 cm (n=30). A total 45 species of zooplankton were identified (28 rotifers, 12 cladocerans and 5 copepods) during the study. The mean abundance of rotifers was highest (124$pm$232 ind. L$^{-1}$, n =90) and that of cladocerans and copepods were relatively low (22$pm$56 ind. L$^{-1}$ and 13$pm$30 ind. L$^{-1}$) in the whole layer. Total zooplankton abundance increased from late spring to summer, and then declined and remained low throughout the winter. The annual mean of total zooplankton filtration rate for phytoplankton at the lower layer was much higher than that of both layers (upper layer: 44.4$pm$107.8, middle layer: 95.1$pm$436.4 and lower layer: 158.2$pm$436.4 mL L$^{-1}$ day$^{-1}$). Among the major zooplankton community, relative community filtration rate (RCFR, %) of copepods for phytoplankton (50.2$sim$54.8%) was much higher than that of cladocerans (27.7$sim$36.3%) and rotifers (8$sim$17.6%). The seasonal variation of RCFRs of major zooplankton community was observed. The RCFRs of rotifers were high in winter (44.6%, n=9), while the RCFRs of cladocerans were high in summer (58.0%, n=7). In spring and fall, the RCFRs of copepods were high in the whole layer (spring: 67.4%, n=9; fall: 74.4%, n=5). |
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| Ű¿öµå |
| zooplankton;vertical changes;community filtration rate;phytoplankton;copepods; |
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ȯ°æ»ý¹° / v.26, no.4, 2008³â, pp.392-401
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200820258463211)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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