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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.44, no.1, 2011³â, pp.75-84
Àΰø¼ö·Î¿¡¼­ °í³óµµ ʼö°¡ ¼öÁú ¹× ºÎÂø ±ÔÁ¶·ù ±ºÁý¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effect of Highly Concentrated Turbid Water on the Water Quality and Periphytic Diatom Community in Artificial Channel )
À±¼º¾Ö;À¯°æ¾Æ;¹ÚÁöÇü;±è¹éÈ£;Ȳ¼øÁø; ±¹¸³È¯°æ°úÇпø ÇѰ­¹°È¯°æ¿¬±¸¼Ò;±¹¸³È¯°æ°úÇпø ÇѰ­¹°È¯°æ¿¬±¸¼Ò;±¹¸³È¯°æ°úÇпø ÇѰ­¹°È¯°æ¿¬±¸¼Ò;°Ç±¹´ëÇб³ ȯ°æ°úÇаú;°Ç±¹´ëÇб³ ȯ°æ°úÇаú;
 
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ÀΰøÇÏõ¿¡¼­ ʼö°¡ ºÎÂøÁ¶·ù ±ºÁý¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÑ ¿¬±¸´Â ½Ç³»¿¡ Àΰø¼ö·Î 4°³¸¦ ¼³Ä¡Çϰí, ´ëÁ¶±º 2°³¿Í 󸮱º 2°³·Î ¹Ýº¹½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. »ç¿ëµÈ ±âÁúÀº 1% agarÀ» ¹Ù¸¥ ½½¶óÀÌµå ±Û¶ó½º($7.5{ imes}2.5;cm$)À̾ú°í, ÁöÁ¡´ç 40°³¾¿ ¼³Ä¡ÇÏ¿´´Ù. Á¶»ç´Â 2010³â 3¿ù 29ÀϺÎÅÍ 4¿ù 10ÀϱîÁö ÃÑ 13Àϰ£À̾úÀ¸¸ç, 6Àϰ£Àº ºÎÂøÁ¶·ù°¡ ºÎÂøÇÒ ¼ö ÀÖ´Â °ø¹é±â¸¦ ÁÖ¾ú°í, Á¶»ç 7ÀϺÎÅÍ 24½Ã°£ °£°ÝÀ¸·Î ¾à 50ºÐ(50 L)°£ °í³óµµÀÇ Å¹¼ö($2;g;L^{-1}$, 300 NTU)¸¦ ÁÖÀÔ ½ÃÄ×´Ù. ºÐ¼®Ç׸ñÀº ¼öÁú¿äÀÎ(¼ö¿Â, DO, pH, Àü±âÀüµµµµ, ʵµ, SS, $NO_2$-N, $NO_3$-N, $NH_4$-N, $PO_4$-P, TN, TP)°ú »ý¹°·®(Chl-${alpha}$, AFDM), Á¾Á¶¼º¿Ã ºÐ¼®ÇÏ¿´´Ù. ºÐ¼® °á°ú, 󸮱ºÀÇ Å¹¼ö ³óµµ´Â 162.2~173.2 NTU·Î ³ªÅ¸³µ´Ù. ʼö ¹ß»ý¿¡ µû¶ó °¨¼ÒÇÏ´Â °æÇâÀ» º¸ÀÎ ¼öÁú Ç׸ñÀº ¼ö¿Â, DO ¹× TNÀ¸·Î ³ªÅ¸³µ°í, Áõ°¡ÇÏ´Â °æÇâÀ» º¸ÀÎ Ç׸ñÀº SS, $NO_2$-N, $NO_3$-N, $NH_4$-N ¹× TP·Î ³ªÅ¸³µ´Ù. ºÎÂøÁ¶·ùÀÇ »ý¹°·®(Chl-${alpha}$, AFDM) ¹× ¹Ðµµ´Â ʼö ÁÖÀÔ ÈÄ 3 Àϰ£ Å©°Ô ¿µÇâÀ» ¹ÞÁö ¾Ê¾ÒÀ¸³ª 3ÀÏ ÀÌÈĺÎÅÍ´Â ¶Ñ·ÇÇÑ °¨¼Ò¸¦ º¸¿´´Ù. º» ¿¬±¸ÀÇ °á°ú´Â ´Ü±â°£ÀÇ °£ÇæÀûÀΠŹ¼ö¶ó ÇÒÁö¶óµµ ±× ±â°£ÀÌ ÀÏÁÖÀÏ Á¤µµ Áö¼ÓµÈ´Ù¸é ºÎÂø ±ÔÁ¶·ù »ý¹°·®À» Å©°Ô °¨¼Ò½Ãų ¼ö ÀÖÀ½À» º¸¿©ÁÖ¾ú°í, ±×¸¦ ÅëÇÑ ÇÏõ ¸ÔÀ̻罽ÀÇ ±¸Á¶Àû, ±â´ÉÀû ±³¶õÀÇ ÀáÀ缺À» ½Ã»çÇÑ´Ù.
We examined the effect of the turbid water on the periphytic diatom community in an artificial stream system. The artificial stream was constructed with transparent acryl and composed of four channels. Each channel ($20;cm{ imes}200;cm{ imes}40;cm$) was supplied continuously with eutrophic lake water. In order to the freely colonize and grow diatoms, artificial substrate was installed with commercial slide glass soaked in 1% agar. Prior to introducing turbid water, the artificial stream was operated with lake water for 6 days to permit the propagation of diatom community on the substrates. The turbid water prepared with sediment sieved with ${varphi}$ $64;{mu}m$ at $2;g;L^{-1}$ (final concentration, 300 NTU) was provided daily for 50 minute duration. The experiment was conducted for 7 days with manipulated experimental condition of light ($50{sim}80;{mu}mol;m^{-2}s^{-1}$, light:dark=24:0), temperature ($10{pm}1^{circ}C$), and flow rate ($0.31;cm;s^{-1}$). Sampling and analysis were conducted daily for water quality and diatom. Turbidity of the water varied 162.2~173.2 NTU during the experiment. After introduction of turbid water, DO, pH and TN were decreased, while SS and TP increased significantly. A total of 14 genera and 47 species of diatoms was observed on the artificial substrates during the experimental period. Of these, Navicula appeared to be a most dominant genus with 10 species, followed by Cymbella (6 species), Fragilaria (6 species) and Gomphonema (5 species). Achnanthes minutissima was the most dominant species (>70% of total frequency) in both control and treatment experiments. Increase in diatom abundance lasted for three days since turbid water introduction, after that they gradually decreased by the termination of the experiment. These results suggest that frequent supply of highly-concentrated turbid water significantly decreases the periphytic diatom community, and retard the recovery of the stable food-web within the stream.
 
Ű¿öµå
periphytic diatom;intermittently turbid water;water quality;artificial channel;food chain;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.44, no.1, 2011³â, pp.75-84
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201118565335344)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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