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首页> 外文期刊>Estuarine Coastal and Shelf Science >Comparative study of methodologies to measure in situ the intertidal benthic community metabolism during immersion
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Comparative study of methodologies to measure in situ the intertidal benthic community metabolism during immersion

机译：浸没过程中潮间带底栖生物代谢原位测量方法的比较研究

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摘要

Methods used to estimate community primary production and respiration in intertidal environment are still subject of controversy. Underwater community respiration (CR), net production (NCP) were calculated from simultaneous in situ measures of change in oxygen (O_2), dissolved inorganic carbon (DIC) and carbon dioxide (CO_2) concentration in benthic chambers performed in February, April, July and November on a Zostera noltii bed. The CRQ (CR_(DIC)/CR_(O_2)) and CPQ (NCP_(O_2)/NCP_(DIC)) varied between 0.15 and 3.07 and between 0.03 and 6.83, respectively. Carbon fluxes calculated from CO_2 measurement were greatly underestimated, representing only 0.4-5.9% of fluxes estimated from DIC measurement Indeed, CO_2 or HCO_3~- input or uptake by seagrass community affect the proportions of all the chemical components of dissolved inorganic carbon (DIC, the sum of free dissolved CO_2, carbonic acid H_2CO_3, bicarbonate and carbonate ions, HCO_3~- and CO_3~(2-)). Thus, CO_2 method is not reliable. O_2 measurement does not take into account anaerobic respiration through chemical oxidation and simultaneous O_2 and DIC measurements should be favored to calculate CRQ and CPQ which need to be discussed in marine environment at community scale.
机译：用于估算潮间带环境中社区初级生产和呼吸的方法仍是争议性的话题。水下群落呼吸（CR），净产量（NCP）是根据2月，4月，7月底栖室中氧气（O_2），溶解性无机碳（DIC）和二氧化碳（CO_2）浓度同时测量的同时计算得出的和十一月在Zostera noltii床上。 CRQ（CR_（DIC）/ CR_（O_2））和CPQ（NCP_（O_2）/ NCP_（DIC））分别在0.15和3.07之间以及0.03和6.83之间变化。由CO_2测量得出的碳通量被大大低估了，仅占DIC测量得出的碳通量的0.4-5.9％。的确，海草群落输入或吸收的CO_2或HCO_3〜-影响溶解性无机碳（DIC，游离溶解的CO_2，碳酸H_2CO_3，碳酸氢根和碳酸根离子，HCO_3〜-和CO_3〜（2-）的总和。因此，CO_2方法是不可靠的。 O_2测量未考虑通过化学氧化进行的厌氧呼吸，应同时进行O_2和DIC测量以计算CRQ和CPQ，这需要在海洋环境中以社区规模进行讨论。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第1期|19-25|共7页
  • 作者

    Vincent Ouisse; Aline Migne; Dominique Davoult;

  • 作者单位

    UPMC Univ Paris 06, UMR7144, Roscoff, France,CNRS, UMR 7144, Equipe Reseaux Trophiques et Production Benthique, Station Biologique, Place Georges Teissier, BP 74, 29682 Roscoff Cedex, France;

    UPMC Univ Paris 06, UMR7144, Roscoff, France,CNRS, UMR 7144, Equipe Reseaux Trophiques et Production Benthique, Station Biologique, Place Georges Teissier, BP 74, 29682 Roscoff Cedex, France;

    UPMC Univ Paris 06, UMR7144, Roscoff, France,CNRS, UMR 7144, Equipe Reseaux Trophiques et Production Benthique, Station Biologique, Place Georges Teissier, BP 74, 29682 Roscoff Cedex, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    intertidal environment; seagrass; carbon; community; oxygen; benthic environment;

    机译：潮间环境海草碳;社区;氧;底栖环境;

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