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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.24, no.1, 2006³â, pp.81-88
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³²ÅÂÆò¾ç Ãà ¶ó±ºÀÇ ÃÊ¹Ì¼Ò ½Ä¹°Çöûũſ ºÐÆ÷ Ư¼º
( Picophytoplankton Distribution in the Chuuk Lagoon South Pacific ) |
| ³ëÀçÈÆ;À̹ÌÁø; Çѱ¹Çؾ翬±¸¿ø ÇØ¾çȯ°æ¿¬±¸º»ºÎ;;
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| ¿´ë ³²ÅÂÆò¾ç¿¡ À§Ä¡ÇÑ Ãà ¶ó±º¿¡¼ flow cytometry¿Í HPLC¸¦ ÀÌ¿ë ÃÊ¹Ì¼Ò ½Ä¹°Çöûũſ Á¶»ç¸¦ ÇÏ¿´´Ù. Synechococcus, Prochlorococcus ±×¸®°í picoeukaryotesÀÇ Ç³µµ¿Í Áö½Ã»ö¼Ò ºÐÆ÷ ¾ç»óÀ» ºÐ¼®ÇÏ¿´°í ÃßÁ¤µÈ ź¼Ò »ýü·®¿¡¼ÀÇ ±â¿©À²À» Á¶»çÇÏ¿´´Ù. ³²¼¼±ÕÀÎ Synechococcus¿Í Prochlorococcus´Â Ãà ¶ó±º¿¡¼ ´ëºñµÇ´Â ºÐÆ÷ Ư¼ºÀ» º¸¿´´Ù. Synechococcus´Â ¿þ³ë¼¶ ÁÖº¯ Á¤Á¡¿¡¼ ³ôÀº dzµµ¸¦ º¸ÀÎ ¹Ý¸é, ºÏµ¿¼ö·Î ÂÊÀ¸·Î ¸Ö¾îÁö¸ç dzµµ°¡ °¨¼ÒÇÏ¿´´Ù. Prochlorococcus´Â ÀÌ¿Í ¹Ý´ëÀÇ ºÐÆ÷Ư¼ºÀ» ³ªÅ¸³ÂÀ¸¸ç, picoeukaryotes´Â ƯÁ¤ÀûÀÎ ¼ö¿ªº° º¯È¸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. ProchlorococcusÀÇ Áö½Ã»ö¼ÒÀÎ divinyl chlorophyll a (Chl. $alpha2$)´Â $1.2sim180.3;ng;L^{-1}$ÀÇ ³óµµ ¹üÀ§¸¦ º¸¿´À¸¸ç, ¿þ³ë¼¶ ÁÖº¯ Á¤Á¡µéº¸´Ù ºÏµ¿¼ö·Î¿¡ Á¢ÇÑ Á¤Á¡µé¿¡¼ ³ô°Ô ³ªÅ¸³µ´Ù. ÀÌ´Â ProchlorococcusÀÇ Ç³µµ¿Í À¯»çÇÑ ºÐÆ÷·Î¼, chl. a2°¡ »ýü·®ÀÇ ÁÁÀº ÁöÇ¥ÀÓÀ» ³ªÅ¸³Â´Ù. ¹Ý¸é zeaxanthinÀº $61.4sim135.8;ng;L^{-1}$ÀÇ ³óµµ ¹üÀ§·Î Á¤Á¡º° º¯È°¡ dzµµº¯È¿¡ ºñÇØ ÀÛÀº Ư¡À» º¸¿´´Âµ¥ ÀÌ´Â Prochlorococcus·ÎºÎÅÍ À¯·¡µÈ zeaxanthinÀÇ ¿µÇâÀ¸·Î ÆÇ´ÜµÈ´Ù. SynechococcusÀÇ ÃßÁ¤µÈ ź¼Ò »ýü·®Àº Àüü ÃÊ¹Ì¼Ò ½Ä¹°Çöûũſ »ýü·®ÀÇ 68%¸¦ Â÷ÁöÇÏ¿´´Ù. Prochlorococcus¿Í picoeukaryotes´Â °¢°¢ 17.1%¿Í 14.9%ÀÇ »ýü·®À» ³ªÅ¸³Â´Ù. |
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| The cell abundance and marker pigment distribution patterns of picophytoplankton in the Chuuk Lagoon, tropical South Pacific, were analyzed flow cytometry and HPLC. Also, respective contribution of Synechococcus, Prochlorococcus and picoeukaryotes on estimated carbon biomass was evaluated. Synechococcus and Prochlorococcus showed contrasting distributional patterns in the waters of Chuuk Lagoon. Relatively high concentration of Synechococcus was observed near Weno Island but the concentration decreased toward the Northeast Passage. However, Prochlorococcus showed an opposite distributional pattern. Picoeukaryotes did not show any significant variable difference. The range of divinyl chlorophyll a (Chl. $alpha$) concentration, marker pigment of Prochlorococcus, was $1.2sim180.3;ng;L^{-1}$ and higher concentrations were observed at the stations near the Northeast Passage than stations near Weno Island. This pigment pattern was similar to cell abundance pattern indicating that chi. a2 may be a useful biomass indicator. On the other hand, the range of zeaxanthin concentrations was $61.4sim135.8;ng;L^{-1}$ showing comparatively less significant variation indicating zeaxanthin influence derived from Prochlorococcus. Estimated carbon biomass of Synechococcus contributed 68% of total picophytoplankton biomass. Prochlorococcus and picoeukaryotes respectively contributed 17.1% and 14.9% of total picophytoplankton biomass. |
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| Ű¿öµå |
| Chuuk Lagoon;flow cytometry;pico-phytoplankton;abundance;pigment;carbon biomass; |
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ȯ°æ»ý¹° / v.24, no.1, 2006³â, pp.81-88
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200617033417453)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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