Global Warming and Terrestrial Biodiversity Decline

1) the extent of global warming, the capacity of the migration of species may be larger than …. Large areas of habitat may be lost to global warming and charts Analyze ….

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Global Warming and Terrestrial Biodiversity Decline, contents:

  • Executive Summary ii
  • Introduction 1
  • Methods 5
  • Results 10
  • Discussion & Conclusions 13
  • Tables 18
  • Figures 24
  • Acknowledgements 32
  • Endnotes 32

Tables:

  • Vegetation types (biomes) used in the analysis. The left column gives the 10 biomes used in the core analyses. The other two columns give the original biome classifications used by two global vegetation models
  • Countries, U.S. states, and Canadian provinces ranked according to the percent of their territory with unusually high required migration rates (≥1,000 m/yr)
  • Increases in required migration rates for: 1) migration that went around water (rather than by straight \’crow-fly distances\’) and 2) migration that went around human development (rather than just around water)
  • Mean (_ SEM) percent of grid cells in six migration rate classes for the two global vegetation models and for assumptions about the time period during which warming under a 2 x CO2 atmosphere might be achieved (100 and 200 years)
  • Countries, U.S. states, and Canadian provinces ranked according to percent loss of existing habitat. Only the first 20 countries and states are shown

Figures:

  1. Schematic representation of three ways in which global warming could lead to species loss
  2. Migration rates that species might be required to achieve in order to keep up with global warming associated with a doubling of CO2 concentrations in 100 years. Shown are the average percent of pixels (map grid cells) in various migration rate classes for two global vegetation models (BIOME3 and MAPSS)
  3. Migration rates that species might have to achieve in order to keep up with global warming plotted against latitude. Migration rates and mean proportions of map grid cells with unusually high rates (≥1,000 metres per year) are shown for 20-degree latitudinal classes
  4. As Figure 3, except that rates and proportions are shown for the 10 vegetation (biome) types
  5. Figure illustrating how rates of migration of spruce (Picea) observed during the most recent glacial retreat compare with migration rates that might be imposed by global warming
  6. Estimates of the migration rates under global warming as a function of assumptions about habitat breadth. Mean log-transformed migration rates are plotted against biome area for biomes in North America and Africa
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