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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.39, no.3, 2006³â, pp.340-351
ÇѰ­ ÇÏ·ùÀÇ È¯°æÇÐÀû ¿¬±¸ VIII. ½Ä¹°Çöûũſ ±ºÁýÀÇ º¯È­¿¡ ¹ÌÄ¡´Â ¹°¸® È­ÇÐÀû ¿äÀÎ
( Environmental Studies in the Lower Part of the Han River VIII. Physicochemical Factors Contributing to Variation of Phytoplankton Communities )
±Ç¿ÀÀ±;Á¤½Â¿ø;ÀÌÁøÈ¯; »ó¸í´ëÇб³ ÀÚ¿¬°úÇдëÇÐ »ý¸íÈ­ÇнýºÅÛÇкÎ;ÇѾç´ëÇб³ ÀÚ¿¬°úÇдëÇÐ »ý¸í°úÇаú;»ó¸í´ëÇб³ ÀÚ¿¬°úÇдëÇÐ »ý¸íÈ­ÇнýºÅÛÇкÎ;
 
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2004³â 2¿ùºÎÅÍ 2005³â 2¿ù±îÁö 1³â µ¿¾È ¸Å °ÝÁÖ°£ ÇѰ­ÇÏ·ù¿ªÀÇ 6°³ Á¤Á¡¿¡¼­ ½Ä¹°Çöûũſ±ºÁý¿¡ ¹ÌÄ¡´Â ¹°¸®È­ÇÐÀû ȯ°æ¿äÀÎÀ» Á¶»çÇÏ¿´´Ù. Á¶»ç°á°ú ¼ö¿ÂÀº $0.3{sim}26.6^{circ}C$, pH: 6.6${sim}$9.1, DO: 1.89${sim}$22.23 mg $L^{-1}$, BOD: 0.38${sim}$9.20 mg $L^{-1}$, COD: 1.4${sim}$15.2 mg $L^{-1}$, Conductivity: $62.5{sim}500.0;{mu}s;cm^{-1}$, SS: 3.00${sim}$159.3 mg $L^{-1}$, chlorophyll a $1.7{sim}71.3;{mu}g;L^{-1}$ ¹üÀ§·Î º¯È­ÇÏ¿´´Ù. ½Ä¹°Çöûũſ ÇöÁ¸·®Àº ÃÖÀú $3.6{ imes}10^2;cells;mL^{-1}$ (2004³â 7¿ù, Á¤Á¡ 3)¿¡¼­ ÃÖ°í $2.3{ imes}10^4;cells;mL^{-1}$ (2005³â 2¿ù, Á¤Á¡ 6)±îÁö º¯È­ÇÏ¿´À¸¸ç, °èÀýº° Æò±Õ ÇöÁ¸·®Àº º½Ã¶¿¡ $5.9{ imes}10^3;cells;mL^{-1}$, ¿©¸§Ã¶ $2.1{ imes}10^3;cells;mL^{-1}$, °¡À»Ã¶ $4.1{ imes}10^3;cells;mL^{-1}$, °Ü¿ïö¿¡ $8.5{ imes}10^3;cells;mL^{-1}$·Î °Ü¿ïö¿¡ °¡Àå ³ô¾Ò´Ù. ½Ä¹°Çöûũſ ÇöÁ¸·®¿¡ ¹ÌÄ¡´Â ȯ°æ¿äÀÎÀÇ ¿µÇâÀ» ±Ô¸íÇϱâ À§ÇÏ¿©, Á¾¼Óº¯¼öÀÎ ÇöÁ¸·®°ú µ¶¸³º¯¼öÀΠȯ°æÀΰúÀÇ ´Ü°èÀû Áßȸ±Í ºÐ¼®À» ÇÑ °á°ú $R^2$=0.465¿´À¸¸ç, ±× Áß Áß¿äÇÑ ¿äÀÎÀº ¼ö¿Â, COD, $NO_2-N$, $PO_4-N$, À¯·®, pH·Î ³ªÅ¸³µ´Ù. 6°³ Á¤Á¡À» ȯ°æ¿äÀÎÀ» ¸Å°³º¯¼ö·Î À¯»çµµ ºÐ¼®À» ÇÑ °á°ú Å©°Ô 3°³ groupÀ¸·Î ³ª´­ ¼ö ÀÖ¾úÀ¸¸ç, ¹°¸® ${cdot}$ È­ÇÐÀû ȯ°æ¿äÀΰú »ý¹°ÇÐÀû ¿äÀÎÀ» ´ë»óÀ¸·Î ANOVA ºÐ¼®¿¡¼­´Â ¼ö¿Â, chlorophyll a, ±Ô»ê¿°, ½Ä¹°Çöûũſ ÇöÁ¸·®Àº Á¤Á¡°£ Â÷À̰¡ ¾øÀÌ ÇϳªÀÇ groupÀ̾úÀ¸¸ç, ¿ëÁ¸»ê¼Ò·®, Àü±âÀüµµµµ, COD, ¾ÆÁú»ê¿°, Áú»ê¿°, ¾Ï¸ð´Ï¾Æ¿°, Àλ꿰ÀÌ Á¤Á¡ 1, 2¿¡¼­ °°Àº groupÀ¸·Î, ¿ëÁ¸»ê¼Ò·®, Àü±âÀüµµµµ, pH, Àλ꿰ÀÌ Á¤Á¡ 3, 4, 5¿¡¼­ °°Àº groupÀ¸·Î ¹­¿´´Ù.
To reveal physicochemical factors contributing to variation of phytoplankton communities, the study was carried out biweekly at 6 stations from Feb. 2004 to Feb. 2005 in the lower part of the Han River, Korea. As results, water temperature was changed from $0.3^{circ}C$ to $26.6^{circ}C$, pH: 6.6${sim}$9.1, DO: 1.89${sim}$22.23 mg $L^{-1}$, BOD: 0.38${sim}$9.20 mg $L^{-1}$, COD: 1.4${sim}$15.2 mg $L^{-1}$, Conductivity: $62.5{sim}500.0;{mu}s;cm^{-1}$, SS: 3.00${sim}$159.3 mg $L^{-1}$, and Chl a $1.7{sim}71.3;{mu}g;L^{-1}$. Phytoplankton standing crops ranged from min. $3.6{ imes}10^2;cells;mL^{-1}$ (July 2004, St. 3) to max. $2.3{ imes}10^4;cells;mL^{-1}$ (Feb. 2005, St. 6), and mean of those varied from $5.9{ imes}10^3;cells;mL^{-1}$in spring, $2.1{ imes}10^3;cells;mL^{-1}$ in summer, $4.1{ imes}10^3;cells;mL^{-1}$ in autumn and $8.5{ imes}10^3;cells;mL^{-1}$ in winter, respectively. In order to investigate factors influencing the total phytoplankton standing crops a multiple regression analysis was adopted for the correlation between standing crops and environmental factors. The coefficient of determination ($R^2$) value of the regression was 0.465, it showed that environmental factors which predominantly influenced phytoplankton standing crops were water temperature, COD, $NO_2-N$, $PO_4-N$, Discharge and pH. six stations could be divided into 3 groups based on similarity index in terms of environmental factors. In ANOVA analysis for physicochemical and biological factors, water temperature, chlorophyll a, silicate, phytoplankton standing crops were the same group differed little from stations. However, Station 1and 2 were grouped followed in dissolved oxygen, conductivity, COD, nitrite, nitrate, ammonia and phosphate, and Station 3, 4 and 5 were followed in dissolved oxygen, conductivity, pH and phosphate.
 
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Han River;multivariate analysis;physicochemical factors;phytoplankton;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.39, no.3, 2006³â, pp.340-351
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200618317187415)
¾ð¾î : Çѱ¹¾î
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