Pelagic Sargassum spp. capture CO2 and produce calcite
Pelagic Sargassum spp. capture CO2 and produce calcite
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远洋马尾藻属
DOI：
10.1007/s11356-020-08969-w
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发表时间：
2020
影响因子：
5.8
通讯作者：
D. Lardizábal‐Gutiérrez
中科院分区：
文献类型：
--
作者：
F. Paraguay;C. Carreño;I. Estrada;Alberto Zabala;H. A. Martinez;D. Lardizábal‐Gutiérrez
远洋马尾藻被认为是一种生态瘟疫，对加勒比地区的旅游业和渔业造成不利的经济影响。然而，它的扩散可能在减少全球变暖方面发挥着重要作用，因为它从大气中去除了高含量的二氧化碳，并将其转化为方解石相的碳酸钙，死后产生沉积物。我们对 2019 年从墨西哥加勒比海岸采集的马尾藻样本中方解石的含量进行了定量。样本分为三个部分：囊泡、叶状体和叶子。在每个部分中，通过X射线能量色散测定碳、氧和钙的量，以确认方解石晶相的存在。成像方法和红外光谱补充了结构研究。热重分析确定马尾藻捕获的大约 5% 的二氧化碳转化为方解石。因此，通过推断，2011 年至 2019 年大西洋马尾藻带保留了约 1930 万吨二氧化碳。
Pelagic Sargassum is considered an ecological plague that is causing adverse economic impacts to the tourist and fishing industries in the Caribbean. However, its proliferation might be playing an important role to reduce global warming, as it removes a high content of CO2 from the atmosphere and transforms it into calcium carbonate, in its calcite phase, producing sediment after it dies. We quantified the amount of calcite in Sargassum samples collected from the Mexican Caribbean coast in 2019. Samples were divided into three parts: vesicles, thallus, and leaves. In each part, the amount of carbon, oxygen, and calcium was determined by means of X-ray energy dispersion to confirm the existence of a calcite crystalline phase. Imaging methodologies and IR spectroscopy complemented the structural studies. The thermogravimetric analysis determined that approximately 5% of the CO2 captured by the Sargassum was converted into calcite. Thus, by extrapolation, the Atlantic Sargasso Belt retained approximately 19.3 million tons of CO2 from 2011 to 2019.
影响因子：
56.9
作者：
Wang, Mengqiu;Hu, Chuanmin;Montoya, Joseph P.
通讯作者：
Montoya, Joseph P.
影响因子：
16.6
作者：
Sviben S;Gal A;Hood MA;Bertinetti L;Politi Y;Bennet M;Krishnamoorthy P;Schertel A;Wirth R;Sorrentino A;Pereiro E;Faivre D;Scheffel A
通讯作者：
Scheffel A