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Related Experiment Videos

The biodiversity challenge: expanded hot-spots analysis.

N Myers

    The Environmentalist
    |January 1, 1990
    PubMed
    Summary
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    Threatened biotas: "hot spots" in tropical forests.

    The Environmentalist·1988
    See all related articles

    Earth's biodiversity is rapidly declining, with one-fifth of plant species concentrated in threatened hotspots. Conservation efforts focused on these critical areas offer the greatest potential to prevent mass extinctions.

    Area of Science:

    • Ecology
    • Conservation Biology
    • Biodiversity Studies

    Background:

    • Global biodiversity is facing an unprecedented mass extinction event.
    • Identifying and protecting species-rich areas is crucial for conservation.
    • Previous assessments have highlighted specific biodiversity hotspots.

    Purpose of the Study:

    • To identify and analyze additional biodiversity hotspots facing significant threats.
    • To quantify the concentration of endemic species within these identified areas.
    • To inform conservation strategies for mitigating large-scale species loss.

    Main Methods:

    • Utilized an analytical methodology for assessing species richness and threats.
    • Focused on 'hotspot' areas defined by high species endemism and destruction risk.
    Keywords:
    BiodiversityCritiqueEnvironmentEnvironmental DegradationEvaluationForestsNatural ResourcesQuantitative EvaluationWorld

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  • Identified 8 new hotspots: 4 in tropical forests and 4 in Mediterranean-type zones.

    • Main Results:

    • The 8 new hotspots contain 15,555 endemic plant species in 454,400 sq. km (6.2% of species in 0.3% of land).
    • Combined with 10 prior tropical forest hotspots, 18 areas support 49,995 endemic species (20% of species in 0.5% of land).
    • These critical habitats are under imminent threat of destruction.

    Conclusions:

    • A significant proportion of Earth's plant species are concentrated in a small fraction of land.
    • These areas are highly threatened, necessitating urgent conservation action.
    • Targeted conservation in these hotspots can maximize the impact of safeguarding measures against mass extinctions.