Blanket peat biome endangered by climate change

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Blanket peat biome endangered by climate change. / Gallego-Sala, Angela; Prentice, I. Colin.

In: Nature Climate Change, Vol. 3, No. 2, 2013, p. 152-155.

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Gallego-Sala, A & Prentice, IC 2013, 'Blanket peat biome endangered by climate change', Nature Climate Change, vol. 3, no. 2, pp. 152-155. https://doi.org/10.1038/NCLIMATE1672

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Gallego-Sala, Angela ; Prentice, I. Colin. / Blanket peat biome endangered by climate change. In: Nature Climate Change. 2013 ; Vol. 3, No. 2. pp. 152-155.

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TY - JOUR

T1 - Blanket peat biome endangered by climate change

AU - Gallego-Sala, Angela

AU - Prentice, I. Colin

PY - 2013

Y1 - 2013

N2 - Blanket bog is a highly distinctive biome restricted to disjunct hyperoceanic regions. It is characterized by a landscape covering of peat broken only by the steepest slopes(1). Plant and microbial life are adapted to anoxia, low pH and low nutrient availability. Plant productivity exceeds soil organic matter decomposition, so carbon is sequestered over time. Unique climatic requirements, including high year-round rainfall and low summer temperatures(2), make this biome amenable to bioclimatic modelling. However, projections of the fate of peatlands in general, and blanket bogs in particular, under climate change have been contradictory(3-7). Here we use a simple, well-founded global bioclimatic model(8), with climate-change projections from seven climate models, to indicate this biome's fate. We show marked shrinkage of its present bioclimatic space with only a few, restricted areas of persistence. Many blanket bog regions are thus at risk of progressive peat erosion and vegetation changes as a direct consequence of climate change. New areas suitable for blanket bog are also projected, but these are often disjunct from present areas and their location is inconsistently predicted by different climate models.

AB - Blanket bog is a highly distinctive biome restricted to disjunct hyperoceanic regions. It is characterized by a landscape covering of peat broken only by the steepest slopes(1). Plant and microbial life are adapted to anoxia, low pH and low nutrient availability. Plant productivity exceeds soil organic matter decomposition, so carbon is sequestered over time. Unique climatic requirements, including high year-round rainfall and low summer temperatures(2), make this biome amenable to bioclimatic modelling. However, projections of the fate of peatlands in general, and blanket bogs in particular, under climate change have been contradictory(3-7). Here we use a simple, well-founded global bioclimatic model(8), with climate-change projections from seven climate models, to indicate this biome's fate. We show marked shrinkage of its present bioclimatic space with only a few, restricted areas of persistence. Many blanket bog regions are thus at risk of progressive peat erosion and vegetation changes as a direct consequence of climate change. New areas suitable for blanket bog are also projected, but these are often disjunct from present areas and their location is inconsistently predicted by different climate models.

U2 - 10.1038/NCLIMATE1672

DO - 10.1038/NCLIMATE1672

M3 - Article

VL - 3

SP - 152

EP - 155

JO - Nature Climate Change

JF - Nature Climate Change

SN - 1758-6798

IS - 2

ER -