Brooks et al., 2006 - global conservation priorities Flashcards Preview

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Flashcards in Brooks et al., 2006 - global conservation priorities Deck (7)
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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


What is good about global conservation strategies?

- some regions are consistently priorities for biodiversity conservation
e.g. tropics, mediterranean-type

- global conservation planning key for strategic allocation of flexible resources

- influence global donors to invest in conservation