Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090423 |
A flux‐based threshold for anaerobic activity in the ocean | |
Emily J. Zakem; Jonathan M. Lauderdale; Reiner Schlitzer; Michael J. Follows | |
2021-01-19 | |
发表期刊 | Geophysical Research Letters
![]() |
出版年 | 2021 |
英文摘要 | Anaerobic microbial activity in the ocean causes losses of bioavailable nitrogen and emission of nitrous oxide to the atmosphere, but its predictability at global scales remains limited. Resource ratio theory suggests that anaerobic activity becomes sustainable when the ratio of oxygen to organic matter supply is below the ratio required by aerobic metabolisms. Here, we demonstrate the relevance of this framework at the global scale using three‐dimensional ocean datasets, providing a new interpretation of existing observations. Evaluations of the location and extent of anoxic zones and a diagnostic rate of pelagic nitrogen loss are consistent with previous estimates. However, we demonstrate that a threshold based on substrate supply fluxes is qualitatively different from a threshold based solely on the ambient oxygen concentration. This implies that use of the flux‐based threshold in global biogeochemical models can result in different predictions of anaerobic activity and nitrogen loss. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/312324 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Emily J. Zakem,Jonathan M. Lauderdale,Reiner Schlitzer,等. A flux‐based threshold for anaerobic activity in the ocean[J]. Geophysical Research Letters,2021. |
APA | Emily J. Zakem,Jonathan M. Lauderdale,Reiner Schlitzer,&Michael J. Follows.(2021).A flux‐based threshold for anaerobic activity in the ocean.Geophysical Research Letters. |
MLA | Emily J. Zakem,et al."A flux‐based threshold for anaerobic activity in the ocean".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论