| 干出对潮间带不同垂直位置海藻的生长及光合作用速率的影响 |
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| 引用本文： | 郭赣林,董双林.干出对潮间带不同垂直位置海藻的生长及光合作用速率的影响[J].海洋湖沼通报,2008(4). |
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| 作者姓名： | 郭赣林 董双林 |
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| 作者单位： | 中国海洋大学教育部海水养殖重点实验室,山东,青岛,266003 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家科技支撑计划
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| 摘 要： | 研究了青岛潮间带地区的4种海藻:叉枝藻(Gymnogongrus flabelliformis Harvey,高潮带)、孔石莼(Ulva pertusa kjellm,中潮带)、缘管浒苔(Enteromorpha linza(L.)J.Agar-dh,中潮带)和扁江蓠(Gracilaria textorii(Suring)De Toni,低潮带)在干出状态下的脱水率及每天干出0、0.5、1、2、4和6h下的生长和光合作用。结果表明:干出状态下缘管浒苔的脱水率最小,因为它具中空管状构造;其余3种海藻的脱水率依次为扁江蓠>孔石莼>叉枝藻,但三者差异不大。与水中对照(0h)相比,高潮带的叉枝藻在不同干出处理下的生长和光合作用速率下降(P<0.05)。中潮带的孔石莼在一定干出时间内促进其生长和光合作用(P<0.05),缘管浒苔则未见显著的促进作用。低潮带的扁江蓠在干出处理下几乎不能生长和存活。
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| 关 键 词： | 干出 海藻 生长 光合作用 |
EFFECTS OF DESICCATION ON THE GROWTH AND PHOTOSYNTHETIC RATE OF FOUR INTERTIDAL MACROALGAE FROM DIFFERENT VERTICAL LOCATIONS |
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| GUO Ganlin,DONG Shuanglin.EFFECTS OF DESICCATION ON THE GROWTH AND PHOTOSYNTHETIC RATE OF FOUR INTERTIDAL MACROALGAE FROM DIFFERENT VERTICAL LOCATIONS[J].Transaction of Oceanology and Limnology,2008(4). |
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| Authors: | GUO Ganlin DONG Shuanglin |
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| Abstract: | The water loss,growth and photosynthesis of four macroalgae from the intertidal zone in Qingdao,Gymnogongrus flabelliformis Harvey,Ulva pertusa kjellm,Enteromorpha linza(L.) J.Agardh and Gracilaria textorii(Suring) De Toni,were investigated at different periods of desiccation(0,0.5,1,2,4 and 6h).The results showed that E.linza had the best water retaining ability because of its morphological mechanism.The percent water loss of three other macroalgae were G.textorii>U.pertusa> G.flabelliformis,but they had no significant differences.As compared with fully hydrated conditions(0h),SGR and photosynthetic rate of G.flabelliformis(upper-shore) declined once desiccation began(P<0.05).U.pertusa(mid-shore) showed an increase in growth and photosynthetic rate after some desiccation(P<0.05),whereas E.linza(mid-shore) had no significant differences after different dry durations.G.textorii(lower-shore) could not survive during desiccation. |
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| Keywords: | desiccation macroalgae growth photosynthesis |
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