| Notes Effects of four nitrogen substrates on growth of several red tide species |
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| 作者姓名： | Yan Tian Zhou Mingjiang Qian Peiyuan |
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| 作者单位： | Yan Tian，Zhou Mingjiang，Qian Peiyuan1. Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China2. Hong Kong University of Science and Technology，Kowloon，Hong Kong，China |
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| 基金项目： | This study was supported by NSFC Project under contract Nos 39950001, 49906007, 20177023 and 40076030，Projects of No.2001CB409700 KZCX2-206, PREPP from the Government of the Hong Kong Special Administrative Region of the PRC and Science Committee of |
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| 摘 要： | Eight common red tide species including the Dinoflagellates Alexcandrium tamarense,Prorocentrum minimum , Prorocentrum mican , Diatoms Skeletonema costatum , Cerataulina pelag-ica, Leptocylindrus minimus, a Raphidophyte Heterosigma akashiwo and a Chrysophyte Isochrysis galbana were chosen to study the effect of four nitrogen substrates (NO_3 - N, NH_4 - N, Urea - N, Mixed - N) on the growth of these algae. After two transfers, the results showed that at N concentration of 550 μmol,, NO_3 - N was the best nitrogen source among these four nitrogen substrates; Urea - N and Mixed - N were also good for the growth of most algae, but not as good as NO_3 - N for some species; NH_4 - N inhibited the growth of all these species except H. akashiwo. At concentrations of 280 and 50 μmol experiments on the growth of I. galbana , P. minimum and L. minimus in NH_4 - N and NO_3 - N substrates were also performed. The results showed that the growth rates of I. galbana were not significantly different from each other in
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| 关 键 词： | Red tide nutrient N-substrate |
| 收稿时间： | 2002/1/22 0:00:00 |
| 修稿时间： | 2002/2/20 0:00:00 |
Notes Effects of four nitrogen substrates on growth of several red tide species |
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| Yan Tian,Zhou Mingjiang,Qian Peiyuan.Notes Effects of four nitrogen substrates on growth of several red tide species[J].Acta Oceanologica Sinica,2002,21(3):461-467. |
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| Authors: | Yan Tian Zhou Mingjiang and Qian Peiyuan |
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| Institution: | Yan Tian,Zhou Mingjiang,Qian Peiyuan1. Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China2. Hong Kong University of Science and Technology,Kowloon,Hong Kong,China |
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| Abstract: | Eight common red tide species including the Dinoflagellates Alejcandrium tamarense,Prorocentrum minimum , Prorocentrum mican , Diatoms Skeletonema costatum , Cerataulina pelag-ica, Leptocylindrus minimus, a Raphidophyte Heterosigma akashiwo and a Chrysophyte Isochrysis galbana were chosen to study the effect of four nitrogen substrates (NOs ?N, NHi - N, Urea ?N, Mixed ?N) on the growth of these algae. After two transfers, the results showed that at N concentration of 550 fano\, NO; - N was the best nitrogen source among these four nitrogen substrates; Urea - N and Mixed ~ N were also good for the growth of most algae, but not as good as NQj ?N for some species; NH??N inhibited the growth of all these species except H. akashrwo. At concentrations of 280 and 50 fimol experiments on the growth of /. galbana , P. minimum and L. minimus in Nri( - N and NO; - N substrates were also performed. The results showed that the growth rates of /. galbana were not significantly different from each other in NO; - N and NH?- N substrates both concentrations of 280 and 50 fonol. In concentration of 280 (anol NHt - N substrate, the growth rates of P. minimum and L. minimus were slower than in same concentration of NO? ~~ N; At concentration of 50 (unol , the growth rate of P. minimum in NH?- N was not significantly different from that in NOj ?N, while the growth rate of L. minimus was only about 30% of that in NQ3 ~ N substrate. The results indicated that each alga had its own preference in N-substrate and concentration, therefore, different nitrogen substrates may play a role in red tide formation. |
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| Keywords: | Red tide nutrient N-substrate |
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