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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.3, 2004³â, pp.332-343
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ÂüÀçøÀ» ÀÌ¿ëÇÑ ºÎ¿µ¾çÈ£ÀÇ ¼öÁú°³¼±
( Water Quality Improvement with the Application of Filter-feeding Bivalve (Corbicula leana Prime) in a Eutrophic Lake ) |
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| º» ¿¬±¸¿¡¼´Â ¿©°ú¼·½Ä¼º ÀÌ¸ÅÆÐ·ùÀÎ ÂüÀçø(Corbicula leana)ÀÇ ¼·½Ä¿¡ µû¸¥ ¼öü³» ¿µ¾ç¿° ¹× ÀÔÀÚ¼º ¹°ÁúÀÇ º¯È¸¦ mesocosm (width ${ imes}$ length ${ imes}$ depth: 3 m ${ imes}$ 3 m ${ imes}$ 0.5 m)¿¡¼ ºÐ¼®ÇÔÀ¸·Î½á ¼öÁú°³¼±±â¹ýÀ¸·ÎÀÇ Àû¿ë°¡´É¼ºÀ» °ËÅäÇÏ¿´´Ù. ªÀº ±â°£ µ¿¾ÈÀÇ mesocosm½ÇÇèÀº ÆÐ·ùÀÇ ±³Ã¼¸¦ ÅëÇÑ ¿¬¼ÓÀûÀÎ µÎ ´Ü°è·Î ¼öÇàµÇ¾ú´Ù. ù ¹øÂ° ´Ü°è´Â ÆÐ·ù ÅõÀÔ ÀÌÈÄ 8ÀÏ µ¿¾ÈÀÌ¸ç ÆÐ·ùÀÇ ±³Ã¼ ÀÌÈÄÀÇ ÁøÇàµÈ 8ÀÏ µ¿¾ÈÀÇ ½ÇÇèÀº µÎ ¹øÂ° ´Ü°è·Î ±¸ºÐµÈ´Ù. ÀÌ·¯ÇÑ ¿¬¼ÓÀûÀÎ ½ÇÇèÀ» ÅëÇØ Á¶°³ÀÇ ¼·½Ä¿¡ µû¸¥ ¼öÁúº¯È¸¦ Á»´õ ¸íÈ®ÇÏ°Ô ºñ±³ÇÒ ¼ö ÀÖ¾ú´Ù. Àçø ÅõÀÔ Á÷ÈÄ ³ôÀº ÆÐ»çÀ²À» º¸¿´À¸³ª 󸮱¸ÀÇ ±³Ã¼°¡ ÀÖ´ø 8ÀÏÀÇ ÀçøÀÇ ÆÐ»çÀ²Àº 4 ind $day^{-1}$ ÀÌÇÏ·Î ¾ÈÁ¤µÈ »óŸ¦ À¯ÁöÇÏ¿´´Ù. ¿±·Ï¼Ò a ³óµµ´Â ÅõÀÔ Á÷ÈÄÀÇ ¼öü ³» ³óµµ¿Í ºñ±³ÇØ ÆÐ·ùÀÇ ±³Ã¼Àü°ú ÈÄ¿¡ °¢°¢ 71%, 88% °¨¼ÒÇÏ¿´°í ºÎÀ¯¹°ÁúÀº 70%, 77% °¨¼ÒÇÏ¿´À¸¸ç, ¿©°úÀ²Àº Æò±Õ 0.46°ú 0.61 mL AFDW $mg^{-1}$ $hr^{-1}$ÀÌ¿´´Ù. Æó»çÀ²ÀÌ ³ô¾Ò´ø ½Ã±â¿¡ ¼öÁß ³» ¾Ï¸ð´Ï¾Æ¼º Áú¼Ò¿Í ¿ëÁ¸ÃÑÀÎÀÌ Áõ°¡ÇÏ¿´´Ù. Æó»çÀ²°ú ¾Ï¸ð´Ï¾Æ ³óµµ´Â ¾çÀÇ »ó°ü¼ºÀ» º¸ÀÎ ¹Ý¸é¿¡ (r = 0.95, P<0.001), ¿ëÁ¸ÃÑÀÎÀÇ ³óµµ´Â Æó»çÀ²°ú À½ÀÇ »ó°ü¼ºÀ» ³ªÅ¸³Â´Ù (r = 0.94, P<0.001). ÆÐ·ùÀÇ Æó»çÀ²ÀÌ ³·¾Ò´ø ±³Ã¼ ÀÌÈÄ¿¡µµ ¾Ï¸ð´Ï¾ÆÀÇ ³óµµ´Â Áõ°¡ÇÏ¿´°í ½ÇÇè Ãʱ⠴ëÁ¶±¸¿Í ºñ±³ÇØ ³ôÀº ³óµµ¸¦ À¯ÁöÇÏ¿´´Ù(P= 0.042, ANOVA). ¹Ý¸é¿¡, ¿ëÁ¸ ÃÑÀÎÀº ºñ·Ï ³óµµ°¡ Áõ°¡ÇÏ¿´À¸³ª Ãʱ⠴ëÁ¶±¸¿Í ºñ±³ÇØ Å« Â÷ÀÌ´Â ¾ø¾ú´Ù(P= 0.509, ANOVA). ÀÌ·¯ÇÑ °á°úµéÀº ¸¸¾à ÆÐ·ù°¡ ÅõÀÔ Ãʱ⿡ »õ·Î¿î ¼½ÄÁö¿¡ ¼º°øÀûÀ¸·Î Á¤ÂøÇÑ´Ù¸é ºÎ¿µ¾ç È£¼öÀÇ ¼öÁúÀ» È¿°úÀûÀ¸·Î °³¼±ÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀÌ µÉ ¼ö ÀÖÀ½À» ½Ã»çÇÑ´Ù. |
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| This study was conducted to test a possibility of water quality improvement using a filter-feeding bivalve (Corbicula leana). In mesocosm scale (width ${ imes}$ length ${ imes}$ depth: 3 m ${ imes}$ 3 m ${ imes}$ 0.5 m), we investigated the changes of dissolved nutrient and particulate matter including both abiotic and biotic seston. Short term (16 days) mesocosm experiment was conducted in two stages: the first stage for 8 days and consecutive 8 days of the second stage. Both treatment and control mesocosm were switched over by translocating mussels from the treatment mesocosm to the control, at 8th days since the start of the experiment. This design made it possible to compare mussel effect on the water quality change more clearly. The high mortality of mussel was observed in the treatment of the first stage, but it decreased rapidly and stabilized on the 8th day to less than< 4 ind $day^{-1}$. Chl. a concentration in the treatment mesocosm of the first and second stage decreased to 71 and 88% of initial concentration, respectively, and suspended solids decreased to 70 and 77%. At those times, average filtering rate were 0.46 and 0.61 mL AFDW $mg^{-1}$ $hr^{-1}$, respectively. Both $NH_3-N$ and dissolved total phosphorus (DTP) concentrations increased with the mussel mortality. $NH_3-N$ concentration was positively correlated with the mussel mortality, while DTP concentration showed negative correlation with it. After translocating mussel from the treatment to the control, $NH_3-N$ concentration significantly increased compared with that of initial control. Although DTP concentration also increased, there was no significant difference relative to that of initial control. These results suggest that application of this filter-feeding bivalve in a eutrophic reservoir could be a potential tool to improve water quality if mussels could acclimatize successfully in early stage of the introduction. |
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| Ű¿öµå |
| filter-feeding bivalve;water quality improvement;mesocosm;eutrophic reservoir; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.3, 2004³â, pp.332-343
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317183156)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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