Reconstructing past climatic trajectories to assess the vulnerability of Amazonian peatlands in a global change scenario using lipid biomarker proxies

Provider

Czech Science Foundation

Programme

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Call for proposals

SGA0202600005

Main participants

Univerzita Karlova / Přírodovědecká fakulta

Contest type

VS - Public tender

Contract ID

26-22906O

Project name in Czech

Reconstructing past climatic trajectories to assess the vulnerability of Amazonian peatlands in a global change scenario using lipid biomarker proxies

Annotation in Czech

Tropical peatlands are among the most carbon-dense ecosystems, acting as major CO2 sinks. Despite their key role in the carbon cycle, many remain poorly studied, especially in the Amazon. These ecosystems face increasing threats from climate change and human activity. Changes in hydroclimatic conditions, including altered drought patterns, are making some peatlands more vulnerable. If degradation reaches a tipping point, stored carbon could be released, triggering a positive feedback loop that accelerates climate change. Understanding how past climatic shifts affected peat decomposition and carbon release is crucial for assessing their current vulnerability. This project will reconstruct Holocene climate changes in Amazonian peatlands, focusing on their western and eastern edges, where hydroclimatic variability is most pronounced. Using lipid biomarkers, such as brGDGTs and compound-specific stable hydrogen isotope composition (δ²H), I will reconstruct past temperature and hydrological changes to evaluate their impact on peat accumulation.

R&D category

ZV - Basic research

OECD FORD - main branch

10511 - Environmental sciences (social aspects to be 5.7)

OECD FORD - secondary branch

10510 - Climatic research

OECD FORD - another secondary branch

10619 - Biodiversity conservation

CEP - equivalent branches <br>(according to the <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">converter</a>)

DG - Atmospheric sciences, meteorology<br>DI - Pollution and air control<br>DJ - Pollution and water control<br>DK - Contamination and decontamination of soil including pesticides<br>DL - Nuclear waste, radioactive pollution and control<br>DM - Solid waste and its control, recycling<br>DO - Protection of landscape<br>EH - Ecology - communities

Realization period - beginning

Jun 1, 2026

Realization period - end

Dec 31, 2029

Project status

Z - Beginning multi-year project

Latest support payment

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Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data delivery code

CEP26-GA0-GN-R

Data delivery date

May 4, 2026

Total approved costs

5,562 thou. CZK

Public financial support

5,562 thou. CZK

Other public sources

0 thou. CZK

Non public and foreign sources

0 thou. CZK