Pelagic transfer of iron and nutrients in the Peruvian oxygen minimum zone (B10)

秘鲁最低氧气区 (B10) 的铁和营养物质的远洋转移

• 批准号: 250445130
• 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: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/250445130?language=en
• 关键词: Pelagic; transfer; iron; nutrients; Peruvian

Fe, P and N are key for ocean productivity and N2 fixation. The supply of Fe and P to surface waters and off shore from sediment sources is enhanced in oxygen minimum zones (OMZs), while N supply is reduced. Fe stabilisation mechanisms and removal fluxes in OMZs are not well known and quantified. Total dissolved N and P fluxes are poorly quantified, because the magnitude of the organic N and P fractions, which form important nutrients to offshore microbial communities, are not well known. This project will provide a quantitative and mechanistic assessment of N, P and Fe transfer in the Peru region, facilitating model parameterisation for projections and feedback studies under future climate conditions.

Fe, P and N are key for ocean productivity and N2 fixation.在最低氧区 (OMZ)，沉积物源向地表水和近海的铁和磷供应增加，而氮供应减少。 Fe stabilisation mechanisms and removal fluxes in OMZs are not well known and quantified.总溶解氮和磷通量的量化很差，因为对近海微生物群落形成重要营养物质的有机氮和磷部分的大小尚不清楚。该项目将对秘鲁地区的氮、磷和铁转移进行定量和机制评估，促进未来气候条件下预测和反馈研究的模型参数化。