| The effect of UV-B radiation enhancement on the interspecific competition between Skeletonema costatum and Heterosigma akashiwo |
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| 作者姓名： | XIAO Hui TANG Xuexi ZHANG Peiyu CAI Hengjiang |
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| 作者单位： | XIAO Hui1，TANG Xuexi1*，ZHANG Peiyu1，2，CAI Hengjiang1 1. Ecology Laboratory，Ocean University of China，Qingdao 266003，China 2. Life Sciences College，Qufu Normal University，Qufu 273165，China |
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| 基金项目： | 国家自然科学基金，Scientific Research Rewards Foundation for Outstanding Youth Scientists of Shandong Province under contract |
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| 摘 要： | 1 Introduction R ed tide is a global m arine ecological calam ity.In recentyears, there has been an increase in frequen-cy, affected area and extentof injury of red tide out-breaks in the coastalw aters ofour country.A ccordingto China M arine D isaster B ulletin issued by the StateO ceanic A dm inistration of C hina, harm ful red tideshad occurred up to 119 tim es in 2003, w hich w as 40tim es m ore than thatin 2002. O w ing to the w orsenedcultural environm ent and increased nutrient en…
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| 关 键 词： | UV-B radiation interspecific competition inhibition Skeletonema costatum Heterosigma akashiwo |
| 收稿时间： | 2004/4/11 0:00:00 |
| 修稿时间： | 2004/12/2 0:00:00 |
The effect of UV-B radiation enhancement on the interspecific competition between Skeletonema costatum and Heterosigma akashiwo |
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| XIAO Hui,TANG Xuexi,ZHANG Peiyu,CAI Hengjiang.The effect of UV-B radiation enhancement on the interspecific competition between Skeletonema costatum and Heterosigma akashiwo[J].Acta Oceanologica Sinica,2005,24(2):77-84. |
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| Authors: | XIAO Hui TANG Xuexi ZHANG Peiyu and CAI Hengjiang |
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| Institution: | 1.Ecology Laboratory, Ocean University of China, Qingdao 266003, China2.Ecology Laboratory, Ocean University of China, Qingdao 266003, China;Life Sciences College, Qufu Normal University, Qufu 273165, 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. |
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| Keywords: | UV-B radiation interspecific competition inhibition Skeletonema costatum Heterosigma akashiwo |
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