Flashcards in Brooks et al., 2006 - global conservation priorities Deck (7)
Why are global conservation priorities needed?
- biodiversity is unevenly distributed
- some areas of more importance than others
- often most threatened and poorest
- nine templates for global prioritisation
- irreplaceability vs vulnerability (high/low)
- proactive vs reactive
What are the nine templates for global conservation priorities?
- high biodiversity wilderness areas
- biodiversity hot spots
- global 200 ecosystems
- last of the wild
- frontier forests
- endemic bird areas
- crisis ecoregions
- centres of plant biodiversity
- megadiversity countries
vary in cover from less than 10% to over a third of earth
How is irreplaceability used to determine global conservation priorities?
- usually measured as bird or plant endemism
- bird distributions mapped as part of IUCN effort
- more endemism = more biodiversity lost if habitat destroyed/degraded
- also taxonomic uniqueness/unusual phenomena/global rarity of habitat type
- harder to measure
- 6 out of 9 strategies incorporate irreplaceability
Why isn't species richness alone used to determine priorities?
- patterns of species richness driven by common & widespread species
- strategies focused on species richness tend to miss biodiversity needing conservation
How is vulnerability used to determine global conservation priorities?
four types of vulnerability measure:
- environmental and spatial (used most frequently)
- land tenure (measured as protected area coverage)
- threatened species (none use!!!)
- expert opinion (subjective)
habitat loss is problematic:
- difficult to assess with remote systems
- does not incorporate threats
- retrospective rather than predictive
- reactive (prioritizing low vulnerability)
- proactive (prioritizing high vulnerability)
What are limitations of global conservation priorities?
- doesn't factor in climate change or cost
- global prioritisation has had little success in informing conservation strategies thus far