|
|
|
Çѱ¹ÇÏõȣ¼öÇÐȸ / v.43, no.1, 2010³â, pp.1-10
|
Microcystis¿Í °øÁ¸ÇÏ´Â µ¿¹°Çöûũſ ±ºÁýÀÇ °èÀýº¯È ¹× ¾ÈÁ¤µ¿À§¿ø¼ÒºñÀÇ Â÷ÀÌ
( Isotopic Differences among Zooplankton Taxa and Seasonal Variation of Zooplankton Community Coexisting with Microcystis ) |
| ÀÌÀç¿ë;±èÀ籸;Á¤À¯°æ;±è¹üö; °¿ø´ëÇб³ ȯ°æ°úÇаú;°¿ø´ëÇб³ ȯ°æ°úÇаú;°¿ø´ëÇб³ ȯ°æ°úÇаú;°¿ø´ëÇб³ ȯ°æ°úÇаú;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| º» ¿¬±¸¿¡¼´Â ºÎ¿µ¾çÇÑ Àú¼öÁö¿¡¼ µ¿¹°Çöûũſ ±ºÁýÀÇ °èÀýº¯µ¿À» ÆÄ¾ÇÇÏ°í ¾ÈÁ¤µ¿À§¿ø¼ÒºÐ¼®À» ÅëÇØ µ¿¹°ÇöûũſÀÌ Microcystis ¼·½ÄÀ» ȸÇÇÇÑ´Ù´Â ±âÁ¸ÀÇ °¡¼³À» È®ÀÎÇϰíÀÚ ÇÏ¿´´Ù. ¿ä°¢·ù´Â Cyclops vicinus (C. vicinus)¿¡¼ Thermocyclops taihokuensis (T. taihokuensis)·Î ¿ìÁ¡Á¾ÀÇ ÃµÀ̸¦ º¸¿´´Ù. °èÀýº¯µ¿¿¡ µû¸¥ µ¿¹°Çöûũſ±ºÁý ¹Ðµµ´Â MicrocystisÀÇ ¹Ðµµ°¡ °¡Àå ³ô¾Ò´ø 6¿ù¿¡ °¡Àå ³·¾Ò°í, ½Ä¹°ÇöûũſÀÇ ¹Ðµµ ¹× Chl. $alpha$ ³óµµ´Â 7¿ù¿¡ ³·°Ô ³ªÅ¸³µ´Ù. Áö°¢·ù¿Í ¿ä°¢·ù »çÀÌ¿¡ $delta^{13}C$¿Í $delta^{15}N$´Â °¢°¢ ÃÖ´ë $12^{circ}/_{circcirc}$°ú $4^{circ}/_{circcirc}$ÀÇ Â÷À̸¦ º¸¿´À¸¸ç, ÀÌ´Â ¿Õ¼ÛÀú¼öÁö¿¡¼ Áö°¢·ù(D. galeata¿Í B. longirostris)¿Í ¿ä°¢·ù(C. vicinus)´Â ¼·Î ´Ù¸¥ ¿µ¾ç´Ü°è¿¡ À§Ä¡ÇÏ°í ´Ù¸¥ ¿¡³ÊÁö¿øÀ» ÀÌ¿ëÇÔÀ» ½Ã»çÇÏ¿´´Ù. Microcystis¿Í µ¿¹°Çöûũſ(Áö°¢·ù¿Í ¿ä°¢·ù)ÀÇ $delta^{13}C$ »çÀÌ¿¡ º¸ÀÌ´Â $3{sim}7^{circ}/_{circcirc}$ÀÇ Â÷ÀÌ´Â µ¿¹°ÇöûũſÀÌ Microcystis¸¦ Á÷Á¢ ÀÌ¿ëÇÏ±â ¾î·Æ´Ù´Â ±âÁ¸ÀÇ °¡¼³À» ÁöÁöÇÏ¿´´Ù. |
|
| We used stable isotope analysis to investigate the hypothesis that zooplankton were not able to utilize Microcystis as a food source. We also studied seasonal variation of the zooplankton community in a eutrophic Wangsong reservoir. The dominant copepod species changed from Cyclops vicinus to Thermocyclops taihokuensis. Density of zooplankton was suppressed by high density of Microcystis in June and the density of phytoplankton and chlorophyll a concentration was lowest in July. The difference in $delta^{13}C$ and $delta^{15}N$ between cladocerans (Daphnia galeata and Bosmina longirostris) and copepods showed the maximum difference of $12^{circ}/_{circcirc}$ and $4^{circ}/_{circcirc}$, respectively, indicating different energy sources and trophic positions between two taxonomic groups. The difference in $delta^{13}C$ between Microcystis and zooplankton ranged from $3{sim}7^{circ}/_{circcirc}$, supporting the hypothesis that Microcystis could not be used as food source of zooplankton. |
| |
| Ű¿öµå |
| stable isotope;eutrophic reservoir;Microcystis;cladocerans;copepods; |
| |
|
|
 |
|
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.43, no.1, 2010³â, pp.1-10
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201023064630336)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|