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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Oxygen respiration rates of benthic foraminifera as measured with oxygen microsensors
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Oxygen respiration rates of benthic foraminifera as measured with oxygen microsensors

机译：用氧气微传感器测量底栖有孔虫的氧气呼吸速率

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摘要

Oxygen respiration rates of benthic foraminifera are still badly known, mainly because they are difficult to measure. Oxygen respiration rates of seventeen species of benthic foraminifera were measured using microelectrodes and calculated on the basis of the oxygen fluxes measured in the vicinity of the foraminiferal specimens. The results show a wide range of oxygen respiration rates for the different species (from 0.09 to 5.27 nl cell~(-1) h~(-1)) and a clear correlation with foraminiferal biovolume showed by the power law relationship: R=3.9810~(-3) BioVol~(0.88) where the oxygen respiration rate (R) is expressed in nl O_2 h~(-1) and in μm~(3) biovolume (BioVol) (n=44, S~2 =0.72, F= 114, p<0.0001}. The results expressed per biovolume unit (1.82 to 15.7 nl O_2 10~(-3) um~(-3) h~(-1)) allow us to compare our data with the previous published data showing similar ranges. A comparison with available data for other microbenthos groups (nematodes, copepods, ostracods, ciliates and flagellates) suggests that benthic foraminifera have a lower oxygen respiration rates per unit biovolume. The total contribution of benthic foraminifera to the aerobic mineralisation of organic matter is estimated for the studied areas. The results suggest that benthic foraminifera play only a minor role (0.5 to 2.5%) in continental shelf environments, which strongly contrasts with their strong contribution to anaerobic organic matter mineralisation, by denitriflcation, in the same areas.
机译：底栖有孔虫的氧气呼吸率仍知之甚少，主要是因为它们很难测量。使用微电极测量了十七种底栖有孔虫的氧气呼吸速率，并根据在有孔虫标本附近测得的氧气通量来计算。结果表明，不同物种的氧气呼吸速率范围很广（从0.09至5.27 nl cell〜（-1）h〜（-1）），并且与幂函数关系显示的有孔虫生物量具有明显的相关性：R = 3.9810 〜（-3）BioVol〜（0.88），其中氧气呼吸速率（R）以nl O_2 h〜（-1）和μm〜（3）生物量（BioVol）表示（n = 44，S〜2 = 0.72 ，F = 114，p <0.0001}。每生物量单位表示的结果（1.82至15.7 nl O_2 10〜（-3）um〜（-3）h〜（-1））使我们可以将我们的数据与之前的数据进行比较已发表的数据显示了相似的范围，将其与其他微底栖动物群（线虫，co足类，成骨纲，纤毛虫和鞭毛虫）的可用数据进行比较表明，底栖有孔虫的单位生物体积的氧气呼吸速率较低。研究区域的有机物含量估计结果表明，底栖有孔虫在大陆上仅占次要作用（0.5％至2.5％）在相同的区域中，有1个环境与通过反硝化作用对厌氧有机物矿化的强大作用形成鲜明对比。

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    E. Geslin; N. Risgaard-Petersen; F. Lombard; E. Metzger; D. Langlet; F. Jorissen;

  • 作者单位

    Laboratory of Recent and Fossil Bio-Indicators (BIAF), University of Angers, 2 Bd tavofcier, F-49045 Angers, and LEBIM, Marine Station ofYeu Island, France;

    Center for Geomicrobiology, Institute of Biological Sciences, Aarhus University Ny Munkegade 114-116 Bldg 1540, Denmark;

    DTU Aqua, Technical University of Denmark, Kavalergirden 6, 2920 Chartottenlund, Denmark;

    Laboratory of Recent and Fossil Bio-Indicators (BIAF), University of Angers, 2 Bd tavofcier, F-49045 Angers, and LEBIM, Marine Station ofYeu Island, France;

    Laboratory of Recent and Fossil Bio-Indicators (BIAF), University of Angers, 2 Bd tavofcier, F-49045 Angers, and LEBIM, Marine Station ofYeu Island, France;

    Laboratory of Recent and Fossil Bio-Indicators (BIAF), University of Angers, 2 Bd tavofcier, F-49045 Angers, and LEBIM, Marine Station ofYeu Island, France;

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  • 关键词

    aerobic carbon mineralisation; benthic foraminifera; oxygen respiration rates;

    机译：好氧碳矿化;底栖有孔虫;氧气呼吸速率;

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