Improving MOdelling approaches to assess climate change-related THresholds and Ecological Range SHIfts in the Earth's Peatland ecosystems (MOTHERSHIP)

Peatlands form in wet environments where the organic matter built up by plants every year is not fully degraded. This means that, over time, partly degraded organic matter accumulates as peat locking away huge quantities of carbon. We call such areas 'carbon sinks' and through this process, peatlands moderate the Earth's climate. When carefully managed they are our most carbon-rich ecosystems on land. Unfortunately, due to poor management, they are currently our most intensive source of carbon dioxide emissions from land, amplifying climate change in the same way as burning fossil fuels.
The primary means by which peatlands are damaged is drainage, which lowers the water table. This changes how peatlands function, and as a consequence, such areas switch from carbon sinks to carbon sources. Around the world, 10-15% of all peatlands have been impacted by drainage, and use as cropland, production forests, and grazing. In the UK and more widely across Europe, so many peatlands have been altered that >50% of former peat accumulating habitat has been lost.

As part of the effort to reduce global emissions, governments across Europe have invested significant sums in peatland restoration efforts, however it is unclear whether these efforts will be successful in the light of climate change, particularly increasing global temperature and changes to rainfall patterns. In this project, we will investigate whether degraded peatlands differ from natural peatlands in the way they react to climate change. Using sites across the European climate gradient, we will examine what effect variations in weather over several years have on GHG emissions from natural and disturbed peatlands. Using a regional-to-global scale model to simulate future weather to 2100, we will use our new information to enable better policy decisions to sustainably manage peatlands. This will be achieved in the following way:

First, we will determine how differences in climate and management affect how...