How will climate and land use hit bird diversity?
Integrating climate and land-use change via land-cover exposure projects substantial impacts on global bird diversity, with clear ecological assumptions.
Source
Projected impacts of climate and land-use change on the global diversity of birds
Study at a glance
- Design
- Computational / modelling — Stationary-range exposure of breeding bird maps to Millennium Ecosystem Assessment land-cover scenarios
- N
- N=8750 · 8,750 land-bird species of 9,713 total; marine/pelagic taxa excluded
- Population
- Global breeding distributions of land birds
- Outcome
- Combined climate and land-use change projects substantial range-area loss; land-use remains a major threat even if climate-driven shifts occur
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How will climate and land use hit bird diversity?
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
What two global change drivers are integrated?
climate and land-use change through the combined effects of these drivers on global land cover and explored the resulting reductions in range size and possible extinctions within the world's 8,750 terrestrial bird species.
Through what common currency are exposures combined?
combined effects of these drivers on global land cover and explored the resulting reductions in range size and possible extinctions within the world's 8,750 terrestrial bird species.
What they did
Evaluated species’ exposure to climate and land-use change through combined effects on global land cover and bird habitat associations.
What they found
Projected impacts depend on habitat associations and limited dispersal assumptions; range shifts may alleviate some climate impacts while land-use threats remain critical.
The limits
What it doesn't show
Assumes persistent habitat associations and limited dispersal; finer habitat specialization may be missed by coarse land-cover classes.
Key terms
- Land-use change
- Human alteration of habitat cover and management.
- Climate exposure
- Degree to which species face changing climate via habitats.
- Land cover
- Mapped vegetation/habitat classes used as exposure proxy.
- Range shift
- Geographic redistribution that may track climate.
- Habitat specialist
- Species dependent on narrow habitat types.
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Drivers integrated:
Common questions
What taxa?
Birds globally.
Two drivers combined?
Climate and land-use change.
Key assumption?
Persistent habitat associations and limited dispersal.
How might impacts lessen?
Range shifts can alleviate some climate exposure.
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