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Blanket peat biome endangered by climate change

Gallego-Sala, Angela LU and Prentice, I. Colin (2013) In Nature Climate Change 3(2). p.152-155
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Climate Change
volume
3
issue
2
pages
152 - 155
publisher
Nature Research
external identifiers
  • wos:000319397500018
  • scopus:84873175114
ISSN
1758-6798
DOI
10.1038/NCLIMATE1672
language
English
LU publication?
yes
id
55031a97-08c9-4520-bee4-5ab8935fdb72 (old id 3932327)
date added to LUP
2013-07-15 12:37:54
date last changed
2019-02-20 02:41:08
@article{55031a97-08c9-4520-bee4-5ab8935fdb72,
  abstract     = {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.},
  author       = {Gallego-Sala, Angela and Prentice, I. Colin},
  issn         = {1758-6798},
  language     = {eng},
  number       = {2},
  pages        = {152--155},
  publisher    = {Nature Research},
  series       = {Nature Climate Change},
  title        = {Blanket peat biome endangered by climate change},
  url          = {http://dx.doi.org/10.1038/NCLIMATE1672},
  volume       = {3},
  year         = {2013},
}