Phytoplankton Do Not Produce Carbon‐Rich Organic Matter in High CO2 Oceans

Phytoplankton Do Not Produce Carbon‐Rich Organic Matter in High CO2 Oceans
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高二氧化碳海洋中的浮游植物不产生富含碳的有机物

DOI:
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发表时间:
2018
期刊:
影响因子:
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通讯作者:
I. Han
I. Han
中科院分区:
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文献类型:
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作者:
Ja‐Myung Kim;Kitack Lee;Y. Suh;I. Han

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海洋是人类活动释放的大气二氧化碳(CO2)的重要汇。在未来的几十年中,溶解无机C浓度在海洋表面预计将增加,这是预计将有直接影响的C利用效率(消费和生产)的浮游植物在光合作用。在这里,我们通过检查在不同pCO2条件下产生的有机物的元素C:N比来评估富C有机物生产的一般性。本分析中使用的数据是从一系列远洋原位pCO2扰动研究中获得的,这些研究是在不同的海洋区域进行的,涉及天然浮游植物组合。所得颗粒物和溶解有机物的C:N比在测试的pCO2条件范围内没有差异。特别地,发现颗粒有机C和N的比率为6.58 ± 0.05,接近理论值6.6。
The ocean is a substantial sink for atmospheric carbon dioxide (CO2) released as a result of human activities. Over the coming decades the dissolved inorganic C concentration in the surface ocean is predicted to increase, which is expected to have a direct influence on the efficiency of C utilization (consumption and production) by phytoplankton during photosynthesis. Here we evaluated the generality of C‐rich organic matter production by examining the elemental C:N ratio of organic matter produced under conditions of varying pCO2. The data used in this analysis were obtained from a series of pelagic in situ pCO2 perturbation studies that were performed in the diverse ocean regions and involved natural phytoplankton assemblages. The C:N ratio of the resulting particulate and dissolved organic matter did not differ across the range of pCO2 conditions tested. In particular, the ratio for particulate organic C and N was found to be 6.58 ± 0.05, close to the theoretical value of 6.6.
DOI: 10.5194/bg-13-3035-2016
发表时间: 2015-10
期刊: Biogeosciences
影响因子: 4.9
作者:
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