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Unifying meta-omics data and biogeochemical modelling to improve future predictions of marine nitrogen fixation

Project description

Research bridges the gap between marine biological diversity and climate models

The ocean’s microbes play an outsized role in global primary production – they contribute nearly half, despite their small biomass. Nitrogen fixation is a process where specialised microbes, called diazotrophs, convert nitrogen into a usable form for marine life. These microbes are incredibly diverse, thriving in various environments with unique growth strategies and metabolisms. Yet, current climate models fail to capture this diversity, creating uncertainty in predicting future ocean productivity. With the support of the Marie Skłodowska-Curie Actions programme, the UNIT-FIX project plans to use large-scale meta-omics data to map diazotroph diversity and incorporate it into advanced frameworks. By improving predictions of marine ecosystems and their response to climate change, UNIT-FIX should help support global efforts to protect ocean health.

Objective

Marine microbes, while only representing 1% of the photosynthetic biomass on Earth, contribute nearly half of global net primary production. Nitrogen (N) is one of the most limiting nutrients in the ocean, controlling marine phytoplanktonic growth and carbon storage. The primary source of nitrogen in the ocean is nitrogen fixation, a process achieved by diazotrophs using the nitrogenase enzyme. Over the last 20 years, the biological knowledge on nitrogen fixation has significantly evolved with the advent of meta-omics data (i.e. high-throughput sequencing of full communities). It is now clear that diazotrophs are a diverse group with various lifestyles, growth strategies and metabolisms, allowing them to occupy a wide range of ecological niches. Yet, climate models models fail to capture diazotroph diversity, leading to uncertainty in predictions of future marine primary production. The advent of marine big data, including large scale environmental meta-omics datasets, offers a chance to bridge biological diversity observations with biogeochemical modelling to enhance marine ecosystem future predictions in a changing climate.
In UNIT-FIX, I aim to take advantage of the wealth of public meta-omics data to achieve three overarching goals: (1) develop a holistic and data-driven description of diazotroph diversity, (2) implement diazotroph diversity into data-driven modelling frameworks, and (3) improve predictions of the future states of diazotrophs and associated impacts on marine productions in a changing climate. These goals will be reached by bridging genome-level omics data and state-of-the-art modelling methods, including niche modelling, metabolic modelling and biogeochemical modelling. Highlighting key actors from marine microbial ecosystems and paving the way for their integration in climate models, UNIT-FIX will contribute to Sustainable Development Goals 13 and 14 of the United Nations: Climate Action and Life Below Water.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

UNIVERSITY OF BRISTOL
Net EU contribution
€ 276 187,92
Address
BEACON HOUSE QUEENS ROAD
BS8 1QU BRISTOL
United Kingdom
Region
South West (England) Gloucestershire, Wiltshire and Bristol/Bath area Bristol, City of
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)