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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.2, 2003³â, pp.30-150
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±¤ Â÷´Ü¿¡ ÀÇÇÑ ½Ä¹°Çöûũſ ¹ß»ý·®ÀÇ Àú°¨È¿°ú¿Í ¼öÁúº¯È­¸¦ ºÐ¼®Çϱâ À§ÇÏ¿© ÁÖ¾ÏÈ£ÀÇ º¹±³ ÁöÁ¡¿¡¼­ 2000³â 8¿ùºÎÅÍ 11¿ù±îÁö ¼öÁú, Chl-¥á ³óµµ, ±×¸®°í ½Ä¹°Çöûũſ Á¾Á¶¼º°ú ÇöÁ¸·®À» ÃøÁ¤ÇÏ¿´´Ù. ¼ö¿Â, Åõ¸íµµ, DO, TN, $NO_3-N$, $NH_4-N$, TP, DIP, COD, SS, pH µîÀÇ ¼öÁúÇ׸ñÀÇ ³óµµ´Â Â÷±¤ÀåÄ¡ ³»ºÎÁö¿ª°ú ¿ÜºÎÁö¿ª¿¡¼­ ¾à°£ÀÇ Â÷À̰¡ ³ªÅ¸³µÀ¸³ª ±× Â÷ÀÌ´Â Å©Áö ¾Ê¾Æ Â÷±¤ÀåÄ¡¿¡ µû¸¥ Á¤Ã¼·Î ÀÎÇÑ ¼öÁúÀÇ º¯È­´Â °ÅÀÇ ¾ø´Â °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. Chl-¥áÀÇ ³óµµ´Â Â÷±¤ÀåÄ¡ÀÇ ³»ºÎ¿¡¼­ ´õ ³·°Ô ³ªÅ¸³µ´Âµ¥, Â÷±¤Áö¿ª¿¡¼­ÀÇ Chl-¥áÀÇ ³óµµ°¨¼Ò È¿À²Àº -6.6~40%(Æò±Õ 14.7%)¿´´Ù. Â÷±¤¿¡ ÀÇÇÑ Chl-¥áÀÇ Àú°¨È¿À²Àº Chl-¥áÀÇ ³óµµ°¡ ³ôÀ» ¶§ ´õ È¿°úÀûÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. º» Á¶»ç±â°£¿¡ µ¿Á¤µÈ ½Ä¹°ÇöûũſÀº 1¹® 5°­ 11¸ñ 21°úÀÇ 55Á¾À̾ú´Ù. ÁÖ¿ä ¿ìÁ¡Á¾Àº Microcystis aeruginosa, Aulacoseira granulate, Peridinium sp., Synedra spp., Oscillatoria sp., Fragilaria construens, Trachelomonas sp.¿´À¸¸ç, ¿ìÁ¡Á¾ÀÇ º¯È­´Â 7¿ùÀÇ ±ÔÁ¶·ù ¿ìÁ¡ ¡æ 8~9¿ù¿¡ ±ÔÁ¶·ù-³²Á¶·ù È¥Àç±â ¡æ 10¿ùÀÇ ³²Á¶·ù ¿ìÁ¡ ¡æ 10~11¿ùÀÇ ±ÔÁ¶·ù ¿ìÁ¡À¸·Î ³ªÅ¸³µ´Ù. ½Ä¹°ÇöûũſÀÇ ÇöÁ¸·®Àº 9¿ù 22ÀÏ Â÷±¤½Ã¼³ ¿ÜºÎÁö¿ª¿¡¼­ ÃÖ°í($1.1{ imes}10^4cells/L$)¸¦, 10¿ù 25ÀÏ ³»ºÎ($4.7{ imes}10^3cells/L$)¿¡¼­ ÃÖÀú¸¦ ³ªÅ¸³Â´Ù. Â÷±¤½Ã¼³¿¡ ÀÇÇÑ ½Ä¹°Çöûũſ ÇöÁ¸·® Àú°¨À²Àº 8~38%(Æò±Õ 19.9%)·Î ³ªÅ¸³µ´Ù. ÀÌ»óÀÇ °á°ú¿¡¼­ Â÷±¤Àº ½Ä¹°ÇöûũſÀÇ ÇöÁ¸·® Àú°¨¿¡ ¾î´À Á¤µµ È¿°ú°¡ ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.
This study was carried out to assess inhibitory effects of light-blocking on water quality and phytoplankton community in Lake Juam from August to November 2000. The values of water temperature, DO, TN, $NO_3-N$, $NH_4-N$, TP, DIP, COD, SS and pH did not show clear differences between inside and outside light-blocked areas. Concentrations of Chl-¥á decreased -6.6~40% (mean 14.7%) from inside of the light-blocked area by light blocking. During the study, 55 species of phytoplankton were identified, and the dominant species were Microcystis aeruginosa, Aulacoseira granulate, Peridinium sp., Synedra spp., Oscillatoria sp., Fragilaria construens, and Trachelomonas sp. The successional pattern of dominant phytoplankton was diatoms(July) ¡æ diatoms/cyanophytes(August-September) ¡æ cyanophytes(October) ¡æ diatoms(October-November). The standing crop of phytoplankton showed maximum density in 22 September with $1.1{ imes}10^4cell/L$, and minimum in 25 October with $4.7{ imes}10^3cell/L$. The decreasing efficiency of standing crop by light-blocking was 8~38%(mean 19.9%). Through this study we found that blocking light seems to have a decreasing effect on the density of phytoplankton.
 
Ű¿öµå
Lake Juam;light-blocking;water quality;Chl-a;phytoplankton;dominant species;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.2, 2003³â, pp.30-150
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200310103452583)
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