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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.27, no.2, 2009³â, pp.205-215
Çѱ¹ ³²ÇØ °¡¸·¸¸ ÀÔ±¸ÇØ¿ªÀÇ ½Ä¹°Çöûũſ ±ºÁý º¯µ¿ Ư¼º
( Variational Characteristics of Phytoplankton Community in the Mouth Parts of Gamak Bay, Southern Korea )
¹ÚÁ¾½Ä;À±¾çÈ£;¿À¼®Áø; Àü³²´ëÇб³ ÇØ¾ç±â¼úÇкÎ;Àü³²´ëÇб³ ÇØ¾ç±â¼úÇкÎ;ºÎ°æ´ëÇб³ ÇØ¾ç°úÇаøµ¿¿¬±¸¼Ò;
 
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ȭŵµ ¿¬¾ÈÀÇ ½Ä¹°Çöûũſ º¯µ¿ Ư¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇÑ Á¶»ç´Â ȭŵµ ºÏºÎÇØ¿ª 1°³ Á¤Á¡À» ´ë»óÀ¸·Î, 2005³â 6¿ùºÎÅÍ 2006³â 6¿ù±îÁö °í¼ö¿Â±â(${geq}20^{circ}C$)¿¡´Â ÁÖ1ȸ, Àú¼ö¿Â±â (${leq}20^{circ}C$)¿¡´Â °ÝÁÖ·Î ½Ç½ÃÇÏ¿´´Ù. ȭŵµ ºÏºÎÇØ¿ª¿¡¼­ ÃâÇöÇÑ ½Ä¹°ÇöûũſÀº ÃÑ 77¼Ó 214Á¾ÀÌ ÃâÇöÇÏ¿´À¸¸ç, ÃâÇöÁ¾¼ö´Â ÃÖÀú 27Á¾(2006³â 3¿ù 15ÀÏ)¿¡¼­ ÃÖ´ë 121Á¾(2005³â 8¿ù 16ÀÏ)À¸·Î ¿¬Áß ÃâÇöÁ¾¼öÀÇ º¯µ¿ÀÌ ¸Å¿ì Å©°Ô ³ªÅ¸³µ´Ù. ¿¬Áß ÃâÇö°æÇâÀº °í¼ö¿Â±âÀÎ 6¿ù~9¿ù »çÀÌ¿¡ 70Á¾ ÀÌ»óÀÇ ³ôÀº ÃâÇöÁ¾¼ö¸¦ ³ªÅ¸³»¾úÀ¸³ª, $20^{circ}C$ ÀÌÇÏ·Î ¼ö¿ÂÀÌ ³»·Á°¡´Â ½Ã±â¿¡´Â 40Á¾ ³»¿ÜÀÇ ³·Àº ÃâÇöÁ¾¼ö¸¦ ³ªÅ¸³»¾ú´Ù. ¿¬Áß ¿ìÁ¡Á¾Àº Skeletonema costatumÀ̸ç, °í¼ö¿Â±âÀÎ ¿©¸§Ã¶¿¡´Â ¿ÍÆí¸ðÁ¶·ùÀÎ Cochlodinium polykrikoides¿Í Polykrikos kofoidii, Àú¼ö¿Â±â¿¡´Â ±ÔÁ¶·ùÀÎ Chaetoceros¼ÓÀÎ C. curvisetus, C. debilis¿Í Eucampia zodiacusÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ȭŵµ ºÏºÎÇØ¿ª¿¡¿¡¼­ ÃâÇöÇÑ ¿ÍÆí¸ðÁ¶·ù ÇöÁ¸·®Àº Ç¥Ãþ¿¡¼­´Â ÃÖÀú $3.0{ imes}10^5;cells;L^{-1}$ (2006³â 4¿ù 17ÀÏ)~ÃÖ´ë $7.3{ imes}10^5;cells;L^{-1}$ (2005³â 8¿ù 2ÀÏ)¸¦ ³ªÅ¸³» ½Ã±âº°·Î ¸Å¿ì Å« º¯µ¿Æ¯¼ºÀ» ³ªÅ¸³»¾ú´Ù. ÀúÃþ¿¡¼­´Â $1.5{ imes}10^3;cells;L^{-1}$ (2005³â 1¿ù 9ÀÏ)~ÃÖ´ë $3.9{ imes}10^5;cells;L^{-1}$ (2005³â 8¿ù 16ÀÏ)·Î ³ªÅ¸³ª, Ç¥ÃþÀÌ ÀúÃþº¸´Ù Å« º¯µ¿Æ¯¼ºÀ» ³ªÅ¸³»¾ú´Ù. ÇöÁ¸·®ÀÇ ¿¬Áß ÃâÇö°æÇâÀº Á¾¼ö¿Í ¸¶Âù°¡Áö·Î °í¼ö¿Â±âÀÎ 6¿ù~9¿ù »çÀÌ¿¡ ³ôÀº ÇöÁ¸·®À» ³ªÅ¸³»¾ú´Ù. ¿ìÁ¡Á¾ÀÎ C. polykrikoidesÀÇ ÃâÇö¾ç»óÀº Á¾¼Ó¿µ¾ç Æí¸ðÁ¶·ùÀÎ P. kofoidii¿¡ ÀÇÇØ ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
In order to understand on the seasonal dynamics of phytoplankton in the mouth parts of Gamak Bay, Korea, we investigated from one station during June 2005 to June 2006. Samples were collected every week during the high water temperature (${geq}20^{circ}C$), and every two weeks during the low water temperature (${leq}20^{circ}C$). The phytoplankton community were composed of 76 genera, 208 species in the surface layer, and 72 genera, 186 species in the bottom layer (total: 77 genera, 214 species). The number of occurring species fluctuated greatly throughout the year from 27 species (March 15, 2006) to 121 species (Aug. 16, 2005). High number of species showed between June and September (>70 species), whereas the low number of species showed during the period of the low water temperature below $20^{circ}C$ (ca. 40 species). The predominant species were diatom Skeletonema costatum during whole year, and two naked dinoflagellates, Cochlodinium polykrikoides and Polykrikos kofoidii during high temperature seasons. However, centric diatoms, Chaetoceros curvisetus, Chaetoceros debilis and Eucampia zodiacus were dominant species during low temperature seasons. Standing crops of dinoflagellate showed great fluctuations, which were ranged from $3.0{ imes}10^5;cells;L^{-1}$ (April 17, 2006) to $7.3{ imes}10^5;cells;L^{-1}$ (Aug. 2, 2005) in the surface layer and from $1.5{ imes}10^3;cells;L^{-1}$ (Nov. 9, 2005) to $3.9{ imes}10^5;cells;L^{-1}$ (Aug. 16, 2005) in the bottom layer, and showed high during high temperature seasons such as the number of species. The fluctuations were greater in the surface layer than in the bottom layer. Moreover, the variation of Cochlodinium polykrikoides, is affected by Polykrikos kofoidii grazing.
 
Ű¿öµå
Phytoplankton;Gamak Bay;Cochlodinium polykrikoides;Skeletonema costatum;
 
ȯ°æ»ý¹° / v.27, no.2, 2009³â, pp.205-215
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919061725463)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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