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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.38, no.1, 2005³â, pp.18-29
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¾èÀº ºÎ¿µ¾ç Àú¼öÁöÀÇ µ¿${cdot}$½Ä¹°Çöûũſ ±ºÁýº¯È Ư¼º
( Characteristic Community Dynamics of Phyto- and Zooplankton in a Shallow Eutrophoic Reservoir ) |
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| º» ¿¬±¸´Â ¼ö½ÉÀÌ ¾èÀº ºÎ¿µ¾ç Àú¼öÁö¿¡¼ µ¿${cdot}$½Ä¹°Çöûũſ õÀ̾ç»óÀ» ÀÌÇØÇϱâ À§ÇØ 2002³â 11¿øºÎÅÍ 2004³â 2¿ù±îÁö ¼öÇàÇÏ¿´´Ù. º½Ã¶ ±ÔÁ¶·ù¿Í ³ìÁ¶·ù°¡ ¿ìÁ¡ÇÑ ½Ã±â¸¦ Á¦¿ÜÇϰí´Â ¿¬Áß ³²Á¶·ù°¡ ¿ìÁ¡ÇÏ¿´´Ù. ³²Á¶·ù ±ºÁý ³» Á¾ Á¶¼ºÀÇ º¯È´Â 6¿ù°ú 12¿ù¿¡ ³ªÅ¸³µÀ¸¸ç, ½Ä¹°Çöûũſ ¹Ðµµ Áõ°¡´Â À¯ÀÔºÎÇÏ·®ÀÌ ¸¹¾Ò´ø 7¿ù°ú11¿ù¿¡ °üÂûµÇ¾ú´Ù. ³²Á¶·ù´Â 5¿ù¿¡ Oscillatoria spp.¿Í Aphanizomenon sp.ÀÇ ¿ìÁ¡ ÀÌÈÄ Microcystis spp.°¡ ¿ìÁ¡ÇÏ¿´À¸¸ç, 12¿ù ÀÌÈÄ¿¡´Â Oscillatoria spp.¿Í Aphanizomenon sp.ÀÇ ¹Ðµµ°¡ Áõ°¡ÇÏ¿´´Ù. ³²Á¶·ù ±ºÁý Áß Microcystis spp.°¡ ¿ìÁ¡ÇÑ 6¿ùºÎÅÍ 12¿ù±îÁö ¼öü ³» TN-TPºñ´Â 13 ${sim}$ 46ÀÇ ¹üÀ§ (Æò±Õ $27{pm}5$)¿´´Ù. µ¿¹°Çöûũſ ±ºÁý Áß Keratella cochlearis, Keratella valga, Polyarthra spp., Conochilus unicornis, Pompholyx complanata¿Í °°Àº À±Ãæ·ùÀÇ Á¡À¯À²ÀÌ Æò±Õ 67.8%·Î ³ô¾Ò´Ù. µ¿¹°ÇöûũſÀÇ ÃÖ´ë ¹Ðµµ´Â Pompholyx complanata (12,388 ind $L^{-1}$)°¡ ¿ìÁ¡ÇÑ 6¿ù¿¡ °üÂûµÇ¾ú´Ù. ÃÖ´ë »ý¹°·®Àº Conochilus unicornis ($1,048{pm}28;{mu}gC;L^{-1}$)°¡ ¿ìÁ¡ÇÑ 5¿ù¿¡ °üÂûµÇ¾ú°í Åõ¸íµµ°¡ ÇöÀúÈ÷ Áõ°¡ÇÏ¿´´Ù($Z_{eu}/;Z_m=;1.1$).º» ¿¬±¸ °á°ú´Â ¼ö½ÉÀÌ ¾èÀº ºÎ¿µ¾ç Àú¼öÁö¿¡¼ ½Ä¹°Çöûũſ ±ºÁý º¯È°¡ ¼ö¿Â, ±¤µµ ±×¸®°í ¿µ¾ç¿° ³óµµÀÇ º¹ÇÕÀûÀÎ ¿µÇâÀ¸·Î ÀÌÇØµÉ Çʿ䰡 ÀÖ°í, À±Ãæ·ù°¡ ½Ä¹°ÇöûũſÀÇ »ý¹°ÇÐÀû Á¶ÀýÀڷμ Áß¿äÇÑ ¿ªÇÒÀ» ¼öÇàÇÒ ¼ö ÀÖÀ½À» Á¦½ÃÇÑ´Ù. |
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| This study was conducted to understand seasonal dynamics of phyto- and zooplankton communities in a shallow eutrophic reservoir (Shingu reservoir) from November 2002 to February 2004. Cyanophyceae dominated throughout the year, except for spring (March ${sim}$ May) when Bacillariophyceae (Melosira varians) and Chlorophyceae (Dictyosphaerium puchellum) were dominant. The change of dominant species in Cyanophytes occurred in June and December 2003, and the increase of phytoplankton cell density in July and November was observed when the P loading through two inflows was high. In May, Oscillatoria spp. and Aphanizomenon sp. were dominant, but replaced by Microcystis spp. in the end of May. Dominant Microcystis spp. sustained until December and shifted to Oscillatoria spp. and Aphanizomenon sp. TN/TP ratio ranged from 13 to 46 (Avg. $27{pm}6$) from June to December when cyanobacteria (Microcystis spp.) dominated. Rotifers such as Keratella cochlearis, Keratella valga, Polyarthra spp., Conochilus unicornis, Pompholyx complanata dominated in average 67.8% of the zooplankton community. Abundance of zooplankton was the highest in June 2003, when Pompholyx complanata (12,388 ind $L^{-1}$) was dominant. In May, the significant increase of Conochilus unicornis biomass ($1,048{pm}28;{mu}g;C;L^{-1}$) was observed with distinct improvement of transparency ($Z_{eu}/;Z_m=;1.1$). These results suggest that the seasonal variation of phytoplankton communities in this reservoir are to be understood as results of multi-interactive factors such as temperature, light condition and nutrients, and small-sized rotifers as important predator. |
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| Ű¿öµå |
| Cyanobacteria;P loading;shallow eutrophic reservoir;small-sized rotifers;TN/TP ratio; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.38, no.1, 2005³â, pp.18-29
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317183930)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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