Sources and Fluxes of Organic Carbon and Energy to Microorganisms in Global Marine Sediments.
Sources and Fluxes of Organic Carbon and Energy to Microorganisms in Global Marine Sediments.
复制标题
DOI:
10.3389/fmicb.2022.910694
复制
发表时间:
2022
影响因子:
5.2
通讯作者:
中科院分区:
文献类型:
--
作者:
Marine sediments comprise one of the largest microbial habitats and organic carbon sinks on the planet. However, it is unclear how variations in sediment physicochemical properties impact microorganisms on a global scale. Here we investigate patterns in the distribution of microbial cells, organic carbon, and the amounts of power used by microorganisms in global sediments. Our results show that sediment on continental shelves and margins is predominantly anoxic and contains cells whose power utilization decreases with sediment depth and age. Sediment in abyssal zones contains microbes that use low amounts of power on a per cell basis, across large gradients in sediment depth and age. We find that trends in cell abundance, POC storage and degradation, and microbial power utilization are mainly structured by depositional setting and redox conditions, rather than sediment depth and age. We also reveal distinct trends in per-cell power regime across different depositional settings, from maxima of ∼10–16 W cell–1 in recently deposited shelf sediments to minima of <10–20 W cell–1 in deeper and ancient sediments. Overall, we demonstrate broad global-scale connections between the depositional setting and redox conditions of global sediment, and the amounts of organic carbon and activity of deep biosphere microorganisms.
登录
查看更多内容
影响因子:
3.7
作者:
Bradley JA;Amend JP;LaRowe DE
通讯作者:
LaRowe DE
影响因子:
4.6
作者:
Braun S;Mhatre SS;Jaussi M;Røy H;Kjeldsen KU;Pearce C;Seidenkrantz MS;Jørgensen BB;Lomstein BA
通讯作者:
Lomstein BA
影响因子:
56.9
作者:
D'Hondt, S;Jorgensen, BB;Acosta, JLS
通讯作者:
Acosta, JLS
影响因子:
18.3
作者:
Estes, Emily R.;Pockalny, Robert;Hansel, Colleen M.
通讯作者:
Hansel, Colleen M.
影响因子:
64.8
作者:
Boetius, A;Ravenschlag, K;Pfannkuche, O
通讯作者:
Pfannkuche, O