Skip to main content
Go to the home page of the European Commission (opens in new window)
English en
CORDIS - EU research results
CORDIS

Quantifying peatland pH across past periods of natural climate change using lipid biomarkers

Project description

Tracing peatland pH across 68 million years

Peatlands store about 25 % of soil carbon and are the largest natural methane source. Their carbon dynamics depend on pH, but limited long-term pH data restrict understanding of climate change impacts. Supported by the Marie Skłodowska-Curie Actions programme, the PeatCHEM project will quantify peatland pH over the past 68 million years during the Cenozoic era – a time of major climatic and evolutionary shifts. Using a unique database of over 450 lignite samples worldwide, the project will improve knowledge of peatland pH responses to environmental changes, identify key drivers of pH variation, and assess the effects of major climate events.

Objective

Peatlands play a major role in the global carbon cycle storing around 25% of all soil carbon and being the largest natural source of methane to the atmosphere. Their future carbon (and other nutrient) dynamics are poorly constrained given the many environmental and biotic variables affecting them. A crucial parameter, controlling peatlands carbon storage and methane emissions is pH, which is closely related to vegetation and microbial community dynamics. Long term pH measurements are limited to at most a few years to decades, limiting our understanding of the long-term consequences of climate change on peatland pH and hence peatland carbon cycle dynamics. The PeatCHEM project will dramatically change our understanding of the response of peatland pH to long-term environmental change. I will quantify peatland pH across the last 68 million years (Cenozoic), a period characterized by major climatic and evolutionary change, using a unique database of over >450 lignites (fossilised peat) from all over the world. Peatland pH will be quantified using two pH proxies that were recently developed at the University of Bristol based on two distinct family of lipid biomarkers: branched glycerol dialkyl glycerol tetraethers (brGDGTs) and hopanes and complemented by vegetation and temperature reconstructions based on n-alkanes, triterpenoids and brGDGTs. This project will identify the main parameters controlling pH variations in peatlands and ascertain the impact of both abrupt and long-term climatic and ecological changes across the Cenozoic on peatland pH. I will constrain the response of peatlands pH to major climatic events such as the Paleocene- Eocene Thermal Maximum (PETM) and the Eocene Oligocene transition (EOT). This project will produce an unprecedented database of peatland pH covering a large range of environmental settings that will revolutionise our understanding of the vulnerability of peatlands to climate and environmental change.

Fields of science (EuroSciVoc)

Programme(s)

Topic(s)

Funding Scheme

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

See all projects funded under this funding scheme

Call for proposal

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

See all projects funded under this call

Coordinator

UNIVERSITY OF BRISTOL
Net EU contribution
€ 260 347,92
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