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首页> 外文期刊>Marine biology >Corallina and Ellisolandia (Corallinales, Rhodophyta) photophysiology over daylight tidal emersion: interactions with irradiance, temperature and carbonate chemistry
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Corallina and Ellisolandia (Corallinales, Rhodophyta) photophysiology over daylight tidal emersion: interactions with irradiance, temperature and carbonate chemistry

机译：Corallina和Ellisolandia（Corallinales，Rhodophyta）在日光潮潮中的光生理学：与辐照度，温度和碳酸盐化学的相互作用

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摘要

The photophysiology of three geniculate coralline algal species (Corallina officinalis, C. caespitosa and Ellisolandia elongata) was determined in intertidal rock pools in the south-west UK at Combe Martin (51°12′31N 4°2′19W) and Heybrook Bay (50°31′66N 4°11′41W), at the start, middle and end of summer (September 1 and 2) and winter (February 9 and 10) daylight tidal emersion periods, in relation to prevailing irradiance, temperature and carbonate chemistry conditions. Algal photophysiology was assessed from rapid light curves performed using pulse amplitude modulation fluorometry. Corallina and Ellisolandia experienced significant fluctuations in irradiance, temperature and carbonate chemistry over seasonal and tidal cycles. Rock pool carbonate chemistry was predictable (R~2 = 0.82, P ＜ 0.0001) by photodose (summed irradiance) plus water temperature, but not significantly related to photophysiology. In contrast, Corallina and Ellisolandia relative maximum electron transfer rate showed a significant negative relationship (R~2 = 0.65, P ＜ 0.0001) with irradiance plus water temperature. At a seasonal resolution, photoacclimation to maximize both light harvesting during winter months and photoprotection during summer months was observed for all species. Dynamic photoinhibition was apparent over both summer and winter tidal emersion, in relation to irradiance fluctuations. More effective photoinhibition was apparent during summer months, with greater sensitivity to irradiance and slower recovery in F_v/F_m, observed during winter. With sustained high irradiance over tidal emersion, the establishment of high pH/low inorganic carbon conditions may impact photochemistry. This study represents the first assessment of C. officinalis, C. caespitosa and E. elongata photophysiology underpinned by clear species concepts and highlights their ability to adapt to the dramatically fluctuating conditions experienced in intertidal rock pools.
机译：在英国西南部Combe Martin（51°12′31N 4°2′19W）和Heybrook湾的潮间带岩石池中测定了三种膝状珊瑚藻物种（Corallina officinalis，C.caespitosa和Ellisolandia elongata）的光生理学。 50°31′66N 4°11′41W），在夏季（9月1日和2日）和冬季（2月9日和10日）开始，中期和结束时，与主要的辐照度，温度和碳酸盐化学有关条件。从使用脉冲幅度调制荧光法进行的快速光曲线评估藻类的光生理学。 Corallina和Ellisolandia在季节和潮汐周期中辐照度，温度和碳酸盐化学性质均出现明显波动。通过光剂量（总辐照度）加水温可预测岩池碳酸盐化学（R〜2 = 0.82，P ＜0.0001），但与光生理学无显着关系。相比之下，Corallina和Ellisolandia的相对最大电子传递速率与辐照度和水温呈显着负相关（R〜2 = 0.65，P ＜0.0001）。在季节分辨率下，对所有物种均进行了光驯化，以使冬季的采光和夏季的光保护最大化。相对于辐照度波动，在夏季和冬季的潮汐涌现中都存在动态的光抑制作用。在夏季，明显更有效的光抑制作用，在冬季观察到，对辐照的敏感性更高，F_v / F_m的恢复较慢。随着潮汐出现持续的高辐照度，高pH /低无机碳条件的建立可能会影响光化学。这项研究代表了对透明种概念的支持下的C. officinalis，C。caespitosa和E. elongata光生理学的首次评估，并强调了它们适应潮间带岩池中剧烈波动条件的能力。

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  • 来源
    《Marine biology》 |2014年第9期|2051-2068|共18页
  • 作者

    C. J. Williamson; J. Brodie; B. Goss; M. Yallop; S. Lee; R. Perkins;

  • 作者单位

    School of Earth and Ocean Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK,Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK;

    Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK;

    School of Earth and Ocean Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK;

    School of Biological Sciences, University of Bristol, Bristol BS8 1UG, UK;

    School of Earth and Ocean Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK;

    School of Earth and Ocean Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK;

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