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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.32, no.2, 1999³â, pp.127-127
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( Seasonal Dynmics of Phytoplankton and Zooplankton Community in Lake Soyang )
±è¹üö;±èÀç¿Á;Àü¸¸½Ä;Ȳ¼øÁø; °­¿ø´ëÇб³ ȯ°æÇаú;°­¿ø´ëÇб³ ȯ°æÇаú;°­¿ø´ëÇб³ ȯ°æÇаú;°æ±â°³¹ß¿¬±¸¿ø ¼öÁúȯ°æ¿¬±¸¼Ò;
 
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¼Ò¾çÈ£ ½Ä¹°Çöûũſ ¿ìÁ¡Á¾ÀÇ °èÀýÀû õÀÌ´Â 1996³â¿¡ $Asterionella;{ ightarrow};Peridinium;{ ightarrow};Anabaena$ÀÇ ¼ø¼­À̾ú°í 1997³â°ú 1998³â¿¡´Â $Asterionella;{ ightarrow};Cryptomonas;{ ightarrow};Anabaena$·Î õÀ̾ç»óÀÌ ¹Ù²î¾ú´Ù. ¸éÀû´ç ½Ä¹°ÇöûũſÀÇ ÇöÁ¸·®Àº ±ÔÁ¶·ùÀÇ sprig bloom½Ã¿¡ °¡Àå ¸¹¾ÒÀ¸¸ç ´Ê¿©¸§¿¡´Â Anabaena°¡ ´ëºÎºÐÀ» Â÷ÁöÇÏ¿´´Ù. ±×·¯³ª 1996³â¿¡¼­ 1998³âÀ¸·Î ÇØ°¡ Áö³¯¼ö·Ï ½Ä¹°ÇöûũſÀÇ ÇöÁ¸·®Àº °¨¼ÒÇÏ¿´´Ù. µ¿¹°ÇöûũſÀº ¿ä°¢·ùÀÇ Eodiaptomus, Cyclops, Diacyclops, Áö°¢·ùÀÇ Bosmina, Daphnia, À±Ãæ·ùÀÇ Polyarthra, Keratella ¼ÓÀÇ Á¾µéÀÌ °èÀý¿¡ µû¶ó ¿ìÁ¡Á¾À¸·Î ³ªÅ¸³µÀ¸¸ç, ¿ä°¢·ùÀÇ ÇöÁ¸·®ÀÌ °¡Àå Å©°Ô ³ªÅ¸³µ´Ù. º½¿¡ ±ÔÁ¶·ùÀÇ »ýü·®ÀÌ ³ôÀº ½Ã±âº¸´Ù $2{sim}3$°³¿ù ÈÄÀÎ 6¿ù¸»ºÎÅÍ 7¿ù¿¡ °ÉÃÄ µ¿¹°Çöûũſ ÇöÁ¸·®ÀÌ ³ô¾Ò°í À̶§ ½Ä¹°ÇöûũſÀÇ Áõ°¡¸¦ ¾ïÁ¦ÇÑ °ÍÀ¸·Î º¸ÀδÙ. ±×·¯³ª 9¿ù ÀüÈÄ¿¡µµ µ¿¹°Çöûũſ ÇöÁ¸·®ÀÌ ³ô¾ÆÁ³´Âµ¥ ÀÌ ¶§´Â ³²Á¶·ùÀÇ ¿ìÁ¡ ½Ã±â¿Í °ÅÀÇ ÀÏÄ¡ÇÑ °ÍÀ¸·Î º¸¾Æ ³²Á¶·ù´Â µ¿¹°Çöûũſ¿¡ ÀÇÇØ È¿À²ÀûÀ¸·Î Æ÷½ÄµÇÁö ¾Ê´Â °ÍÀ¸·Î º¸ÀδÙ. µû¶ó¼­ º½ÀÇ ±ÔÁ¶·ù Áõ½Ä Ãʱ⿡´Â bottom-up È¿°ú°¡ ¿ì¼¼ÇÏ¿´°í ÀÌÈÄ¿¡´Â µ¿¹°ÇöûũſÀÌ Áõ°¡ÇÏ¿© ½Ä¹°ÇöûũſÀÇ ¾çÀ» ¾ïÁ¦ÇÏ´Â top-down È¿°ú°¡ ¿ì¼¼ÇÏ¿´À¸¸ç, ³²Á¶·ù ¹ø¼º±â¿¡´Â ½Ä¹°Çöûũſ°ú µ¿¹°ÇöûũſÀÇ ¸ÔÀÌ¿¬¼âÀÇ ±â´ÉÀû ¿¬°áÀÌ Å©Áö ¾ÊÀº °ÍÀ¸·Î º¸À̸ç, ÀÌ ½Ã±â¿¡´Â ¹Ì»ý¹°¸ÔÀ̸ÁÀÇ ±â´ÉÀÌ Áß¿äÇÑ °ÍÀ¸·Î ÃßÁ¤µÈ´Ù.
Phytoplankton and zooplankton community were investigated on the weekly basis from 1990 to 1998 in a deep reservoir, take Soyang, Korea. The seasonal succession of phytoplankton in 1996 was $Asterionella;{ ightarrow};Peridinium;{ ightarrow};Anabaena$, whereas it was $Asterionella;{ ightarrow};Cryptomonas;{ ightarrow};Anabaena$ both in 1997 and 1998. Standing crop of phytoplankton integrated vertically was highest at the diatom blooms during April and May, whereas standing crop in the surface layer was highest at the cyanobacterial blooms during August and September, because cyanobacteria had buoyancy and floated toward surface. Zooplankton standing crop was high in warm season and dropped to nearly zero in winter. Copepods were dominant zooplankton, and cladocerans and rotifers were subdominant. The increase of zooplankton following after diatom blooms suppressed phytoplankton density effectively, during the period of clear water phase, whereas in cyanobacterial bloom seasons both phytoplankton and zooplankton bloomed together, implying that cyanobacteria are not grazed effectively by zooplankton. In conclusion bottom-up effect dominated in the early stage of spring diatom blooms, and top-down control dominated in the subsequent clear water phase, and finally in late summer, trophic coupling between phytoplankton and zooplankton was not significant, implying the possibility of dominating the microbial food web.
 
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Biovolume;Cell density;Lake Soyang;Phytoplankton;Succession;Zooplankton;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.32, no.2, 1999³â, pp.127-127
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199910102424376)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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