I have developed a computer model, called GEOMOD, to simulate land use change and its consequences on biotic carbon exchanges between terrestrial ecosystems and the atmosphere, using a spatial modeling approach. Land use change is a most important part of the anthropogenic distu…
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Rapid climate change in the Arctic and Sub-Arctic is causing vegetation change across large areas of tundra. Shrubs and trees are undergoing range expansions as part of an over-all trend of ‘greening’ of the tundra. This is of importance because northern peatlands contain around…
Although the dynamics of methane (CH4) emission from croplands and wetlands have been fairly well investigated, the contribution of trees to global methane emission and the mechanisms of tree transport are relatively unknown. Methane emissions from the common wetland tree specie…
Rural households in the West African Sahel have developed livelihood systems that allow them to survive in one of the most challenging social-ecological systems on Earth. These households have experienced environmental shocks including droughts, floods, and extreme heat for hund…
What promotes biological diversity? Accurately recognising and describing patterns of diversity is fundamental to understanding the evolutionary and ecological processes underpinning diversification. The history of living organisms is expressed at multiple dimensions, ranging fr…