GGR-Peat Mesocosm Experiments
The GGR-Peat project is investigating innovative methods for greenhouse gas removal (GGR) from degraded peatlands across the UK. While field trials at various demonstration sites provide valuable insights into large-scale peatland restoration, controlled mesocosm experiments play a crucial role in understanding the underlying processes at a finer scale. These experiments allow researchers to isolate specific variables and assess their impacts on peat formation, carbon sequestration, and greenhouse gas emissions under controlled conditions.
As with our field sites, we clearly differentiate our mesocosm experimental work into lowland and upland.
What Are Mesocosm Experiments?
Mesocosm experiments involve the use of replicated peatland microcosms—typically small, contained units of peat and vegetation—within controlled environments such as laboratories or outdoor test facilities. These systems mimic real-world peatland conditions while allowing researchers to manipulate factors such as water levels, temperature, vegetation, and soil amendments in a way that would be difficult in the field.
Key Research Aims
The mesocosm experiments in the GGR-Peat project are designed to test and refine restoration interventions before they are implemented at full scale in the field. The key aims include:
- Evaluating the role of Sphagnum moss in accelerating peat formation and its potential for carbon sequestration.
- Assessing biochar amendments and their impact on soil structure, microbial communities, and long-term carbon stability.
- Investigating the effects of gypsum application on suppressing methane and nitrous oxide emissions.
- Studying water management techniques to determine the optimal hydrological conditions for peat accumulation and reduced carbon loss.
- Measuring greenhouse gas fluxes to quantify the effectiveness of different interventions in reducing emissions.
Why Are Mesocosm Experiments Important?
Unlike field trials, where environmental conditions can be highly variable, mesocosm experiments provide a controlled setting where specific hypotheses can be tested systematically. This allows GGR-Peat researchers to refine peatland management strategies before implementing them on a larger scale. Findings from these experiments will help inform best practices for peatland restoration, ensuring that interventions deployed in the field are evidence-based and effective.
Linking Mesocosm and Field Research
Insights gained from mesocosm experiments feed directly into the wider GGR-Peat project, guiding decision-making at the project's demonstration sites. By integrating controlled experimental data with real-world field trials, the project can develop more precise and scalable strategies for peatland restoration and greenhouse gas removal.
