Deciphering strategies polar phytoplankton employ to lessen iron limitation

解读极地浮游植物减少铁限制的策略

• 批准号: DP220100289
• 负责人: Prof Michael Ellwood
• 金额: $ 34.06万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-07-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP220100289
• 关键词: Deciphering; strategies; polar; phytoplankton; employ

The Southern Ocean is of global importance. It comprises one-third of the global ocean by area and disproportionately absorbs two-thirds of anthropogenic ocean heat and half of anthropogenic carbon dioxide (CO2) emissions even though phytoplankton in this region are chronically iron-limited. This project aims to understand why copper uptake by phytoplankton lessens the effects of iron limitation and how copper substitutes for iron. This knowledge is critical for evaluating the impacts and feedbacks between iron and copper in regulating Southern Ocean productivity and ultimately its ability to drawdown atmospheric CO2. The results from this project will facilitate the development of improved ecosystem models and conservation tools.

南大洋具有全球重要性。它占全球海洋面积的三分之一，不成比例地吸收了三分之二的人为海洋热量和一半的人为二氧化碳（CO2）排放，尽管该地区的浮游植物长期受到铁的限制。本项目旨在了解为什么浮游植物对铜的吸收会减轻铁限制的影响，以及铜如何替代铁。这一知识对于评估铁和铜在调节南大洋生产力方面的影响和反馈以及最终降低大气二氧化碳的能力至关重要。这一项目的成果将有助于开发更好的生态系统模型和保护工具。