N-losses and nutrient regeneration in oxygen minimum zone waters with emphasis on micro-niches (B04)

最低氧区水域中的氮损失和营养物再生，重点是微生态位 (B04)

• 批准号: 58775256
• 金额: --
• 依托单位: GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/58775256?language=en
• 关键词: losses; nutrient; regeneration; oxygen; minimum

Oxygen minimum zones (OMZ) play a crucial role in regulating the availability of nitrogen (N) in the oceans and our results show a strong link between N cycling and organic matter export as well as co-occurrence of aerobic and anaerobic processes in OMZ waters. We hypothesize that micro-niches associated to strong gradients in O2, N and organic matter (OM) availability, e.g. in aggregate particles, constrain important regulation factors for the N-cycling in OMZ waters. By better defining the effect of O2, OM and N and viral lysis in relation to micro-niches, we aim to improve mechanistic and quantitative insights into the regulation of N-cycling processes essential to improve biogeochemical models.

最小含氧区（OMZ）在调节海洋中氮（N）的有效性方面起着至关重要的作用，我们的研究结果表明，OMZ沃茨中N循环与有机物输出以及好氧和厌氧过程的共同发生之间存在着密切的联系。我们假设，微生态位相关的O2，N和有机质（OM）的可用性，例如在聚合物颗粒的强梯度，限制了重要的调节因素的N-循环OMZ沃茨。通过更好地定义O2，OM和N和病毒裂解的影响与微生态位，我们的目标是提高机械和定量的见解，N-循环过程的调节，必不可少的改善生态地球化学模型。