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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.24, no.1, 2006³â, pp.67-80
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ÇÏ°è ¼ÅÂÆò¾çÀÇ ÃÊ¹Ì¼Ò ½Ä¹°Çöûũſ ºÐÆ÷ Ư¼º ¿¬±¸
( The Summer Distribution of Picophytoplankton in the Western Pacific ) |
| ³ëÀçÈÆ;À¯½ÅÀç;°¼ºÈ£; Çѱ¹Çؾ翬±¸¿ø ÇØ¾çȯ°æ¿¬±¸º»ºÎ;Çѱ¹Çؾ翬±¸¿ø ÇØ¾çȯ°æ¿¬±¸º»ºÎ;Çѱ¹Çؾ翬±¸¿ø ºÎ¼³ ±ØÁö¿¬±¸¼Ò;
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| ȯ°æÆ¯¼ºÀÌ ÃÊ¹Ì¼Ò ½Ä¹°ÇöûũſÀÇ ºÐÆ÷¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÆÄ¾ÇÇϱâ À§ÇØ ¼ÅÂÆò¾çÀÇ ¿´ë¿Í ¾Æ¿´ë ¼ö¿ª(TSWP)°ú µ¿ÇØ¿¡¼ 2002³â 9¿ù Á¶»ç¸¦ ÇÏ¿´°í, µ¿Áß±¹ÇØ ´ë·úºØ¼ö¿ª (C-ECS)Àº 2003³â 8¿ù¿¡ Á¶»ç¸¦ ¼öÇàÇÏ¿´´Ù. ÃÊ¹Ì¼Ò ½Ä¹°ÇöûũſÀº flow cytometry ¹æ¹ýÀ» ÀÌ¿ë Synechoroccus, Prorhlorococcus ±×¸®°í picoeukaryotesÀÇ 3°³Ã¼±ºÀ¸·Î ±¸ºÐ °è¼öÇÏ¿´´Ù. ¹°¸®ÈÇÐÀû ȯ°æÀÌ »óÀÌÇÑ 3°÷ÀÇ Á¶»ç¼ö¿ª º°·Î ÃÊ¹Ì¼Ò ½Ä¹°ÇöûÅ©ÄܵéÀÇ ¼öÁ÷ºÐÆ÷, 100m ¼ö½É±îÁö ÀûºÐµÈ dzµµ¸¦ ºñ±³ÇÏ¿´´Ù. ºÐ¼®°á°ú synechococcus¿Í ProchlorococcusÀÇ ÀûºÐµÈ °³Ã¼¼ö´Â 3°÷ÀÇ Á¶»ç¼ö¿ª¿¡¼ ¼·Î »ó¹ÝµÇ´Â °á°ú¸¦ º¸¿´´Ù. Synechococcus´Â TSWP¿¡¼ Á¤Á¡Æò±Õ $84.5X10^{10};cells;m^{-2}$ÀÇ Ç³µµ¸¦, C-ECS¿¡¼ $305.6X10^{10};cells;m^{-2}$¸¦ µ¿ÇØ¿¡¼± $124.5X10^{10};cells;m^{-2}$ÀÇ Ç³µµ¸¦ º¸¿© ¿µ¿µ¿°ÀÌ Ç³ºÎÇÑ Áö¿ª¿¡¼ dzµµ°¡ Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´´Ù. ÀÌ¿¡ ¹ÝÇØ Prochlorococcus´Â ºó ¿µ¾ç ȯ°æÀÇ TSWP¿¡¼ $504.5X10^{10};cells;m^{-2}$ÀÇ °¡Àå ³ôÀº dzµµ¸¦ º¸¿´À¸¸ç, ¿µ¾ç¿° ȯ°æÀÌ ¾çÈ£ÇÑ C-ECS¿¡¼ ³·Àº dzµµ¸¦ º¸ÀÌ´Â µ¶Æ¯ÇÑ ºÐÆ÷¾ç»óÀ» ³ªÅ¸³Â´Ù. Picoeukaryotes´Â Synechococcus¿Í À¯»çÇÑ Áö¿ªÀû º¯È¸¦ º¸¿´À¸³ª dzµµ´Â ¾à 1/10Á¤µµ¸¦ ³ªÅ¸³Â´Ù. Synechococcus¿Í picoeukaryotes´Â ¸ðµç Á¤Á¡¿¡¼ ÃâÇöÇÑ ¹Ý¸é Prochlorococcus´Â ÀϹÝÀûÀ¸·Î C-ECS¿Í µ¿ÇØÀÇ Àú¿° ȯ°æ¿¡¼ ÃâÇöÇÏÁö ¸¹¾Ò´Ù. Synechococcus¿Í ProchlorococcusÀÇ ¼öÃþº° Æò±Õ dzµµÀÇ ¼öÁ÷ºÐÆ÷´Â Ç¥¸é È¥ÇÕÃþ¿¡¼ À¯»çÇÑ ¼öÁØÀ» º¸ÀÌ´Ù À̽ɿ¡¼ ±Þ°ÝÇÑ °¨¼Ò¸¦ ³ªÅ¸³Â´Ù. ±×·¯³ª TSWP¿¡¼± dzµµÀÇ ±Þ°ÝÇÑ °¨¼Ò°¡ ³ªÅ¸³ªÁö ¸¹°í 100 m ¼ö½É±îÁö ³ôÀº dzµµ¸¦ ³ªÅ¸³Â´Ù. Picoeukaryotes´Â C-ECS¿¡¼ 100 m±îÁö À¯»çÇÑ ¼öÁØÀÇ Ç³µµ¸¦ º¸¿´À¸¸ç, µ¿ÇØÀÇ $20sim30;m$ ¼ö½É¿¡¼± ÃÖ´ë dzµµÃþÀÌ ³ªÅ¸³µ´Ù. |
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| The effect of environmental forcing on picophytoplankton distribution pattern was investigated in the tropical and subtropical western Pacific (TSWP) and the East Sea in September, 2002, and the continental shelf of the East China Sea (C-ECS) in August, 2003. The abundance of picophytoplankton populations, Synechococcus, Prochlorococcus and picoeukaryotes were determined by flow cytometry analyses. Picophytoplankton vertical profiles and integrated abundance $(0sim100;m)$ were compared with these three physiochemically different regions. Variation patterns of integrated cell abundance of Synechococcus and Prochlorococcus in these three regions showed contrasting results. Synechococcus showed average abundance of $84.5X10^{10};cells;m^{-2}$, in the TSWP, $305.6X10^{10};cells;m^{-2}$ in the C-ECS, and $125.4X10^{10};cells; m^{-2}$ in the East Sea where increasing cell concentrations were observed in the region with abundant nutrient. On the other hand, Prochlorococcus showed average abundance of $504.5X10^{10};cells;m^{-2}$ in the TSWP, $33.2x10^{10};cells;m^{-2}$ in the C-ECS, and $130.2X10^{10};cells;m^{-2}$ in the East Sea exhibiting a distinctive pattern of increasing cell abundance in oligotrophic warm water. Although picoeukaryotes showed a similar pattern to Synechococcus, the abundance was 1/10 of Synechococcus. Synechococcus and picoeukaryotes showed ubiquitous distribution whereas Prochlorococcus generally did not appear in the C-ECS and the East Sea with low salinity environment. The average depth profiles for Synechococcus and Prochlorococcus displayed uniform abundance in the surface mixed layer with a rapid decrease below the surface mixed layer. for Prochlorococcus, a similar rapid decreasing trend was not observed below the surface mixed layer of the TSWP, but Prochlorococcus continued to show high cell abundance even down to 100 m depth. Picoeukaryotes showed uniform abundance along $0sim100;m$ depth in the C-ECS, and abundance maximum layer appeared in the East Sea at $20sim30;m$ depth. |
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| Ű¿öµå |
| Pico-phytoplankton;flow cytometry;abundance;vertical profiles;western Pacific; |
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ȯ°æ»ý¹° / v.24, no.1, 2006³â, pp.67-80
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200617033417418)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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