| XIAO Hui,TANG Xuexi,ZHANG Peiyu,CAI Hengjiang. 2005. The effect of UV-B radiation enhancement on the interspecific competition between Skeletonema costatum and Heterosigma akashiwo. Acta Oceanologica Sinica, (2):77－84 |
| The effect of UV-B radiation enhancement on the interspecific competition between Skeletonema costatum and Heterosigma akashiwo |
| The effect of UV-B radiation enhancement on the interspecific competition between Skeletonema costatum and Heterosigma akashiwo |
| Received:April 11, 2004 Revised:December 02, 2004 |
| DOI： |
| Key words:UV-B radiation interspecific competition inhibition Skeletonema costatum Heterosigma akashiwo |
| 中文关键词: UV-B radiation interspecific competition inhibition Skeletonema costatum Heterosigma akashiwo |
| 基金项目: |
| Author Name | Affiliation | E-mail | | XIAO Hui | Ecology Laboratory, Ocean University of China, Qingdao 266003, China | | | TANG Xuexi | Ecology Laboratory, Ocean University of China, Qingdao 266003, China | tangxx@ouc.edu.cn | | ZHANG Peiyu | Ecology Laboratory, Ocean University of China, Qingdao 266003, China
Life Sciences College, Qufu Normal University, Qufu 273165, China | | | CAI Hengjiang | Ecology Laboratory, Ocean University of China, Qingdao 266003, China | |
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| Abstract: |
| The responses of the interspecific competition between Skeletonema costatum and Heterosigma akashiwo to UV-B radiation enhancement were studied by the co-culture method. The results showed that Heterosigma akashiwo exhibited inhibition on the growth of Skeletonema costatum, and with the increase of initial inoculation density of Heterosigma akashiwo, heavier inhibition on Skeletonema costatum appeared. Under different inoculation proportions, Heterosigma akashiwo could always be in predominance in competition with Skeletonema costatum. The UV-B radiation treatment could change the competition relationship between Skeletonema costatum and Heterosigma akashiwo, which could increase the competitive dominance of Skeletonema costatum and decrease the competitive dominance of Heterosigma akashiwo. When the inoculation proportions of Heterosigma akashiwo and Skeletonema costatum were H:S=1:4 and H:S=1:1, Skeletonema costatum was in predominance in this competition; however, Heterosigma akashiwo was in predominance when the inoculation proportion was H:S=4:1. |
| 中文摘要: |
| The responses of the interspecific competition between Skeletonema costatum and Heterosigma akashiwo to UV-B radiation enhancement were studied by the co-culture method. The results showed that Heterosigma akashiwo exhibited inhibition on the growth of Skeletonema costatum, and with the increase of initial inoculation density of Heterosigma akashiwo, heavier inhibition on Skeletonema costatum appeared. Under different inoculation proportions, Heterosigma akashiwo could always be in predominance in competition with Skeletonema costatum. The UV-B radiation treatment could change the competition relationship between Skeletonema costatum and Heterosigma akashiwo, which could increase the competitive dominance of Skeletonema costatum and decrease the competitive dominance of Heterosigma akashiwo. When the inoculation proportions of Heterosigma akashiwo and Skeletonema costatum were H:S=1:4 and H:S=1:1, Skeletonema costatum was in predominance in this competition; however, Heterosigma akashiwo was in predominance when the inoculation proportion was H:S=4:1. |
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