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Redefining and mapping global irreplaceability.

Daniele Baisero1,2, Richard Schuster3, Andrew J Plumptre1,4

  • 1Key Biodiversity Areas Secretariat, c/o BirdLife International, Cambridge, UK.

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|July 13, 2021
PubMed
Summary
This summary is machine-generated.

Identifying irreplaceable sites is crucial for conservation. A new method maps global irreplaceability for terrestrial vertebrates, revealing 3.5% of land is highly irreplaceable, with 47.6% concentrated in 12 countries.

Keywords:
biodiversidadbiodiversityconservation planningfuture proofglobalirremplazabilidadirreplaceabilityplaneación de la conservaciónplaneación sistemática de la conservaciónpreparado para el futurorobustrobustosystematic conservation planningvertebradosvertebrates保护规划全球关键词: 不可替代性未来的证据生物多样性稳健系统性保护规划脊椎动物

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Area of Science:

  • Conservation Science
  • Biodiversity Mapping
  • Spatial Ecology

Background:

  • Irreplaceability measures site essentiality for conservation targets.
  • Current methods are computationally intensive and lack intrinsic definition.
  • Surrogate measures like complementarity are not true irreplaceability metrics.

Purpose of the Study:

  • To develop a robust, axiom-adherent method for measuring site irreplaceability.
  • To create the first systematic global map of irreplaceability for terrestrial vertebrates.
  • To inform global conservation strategies and biodiversity targets.

Main Methods:

  • Designed a novel irreplaceability measurement method adhering to five key axioms.
  • Utilized comprehensive data for terrestrial vertebrates (29,837 species).
  • Generated a global map using over one million grid cells.

Main Results:

  • Identified 3.5% of the global land surface as highly irreplaceable.
  • Found 47.6% of highly irreplaceable areas are concentrated within 12 countries.
  • Demonstrated that broader irreplaceability thresholds encompass more protectable land.

Conclusions:

  • The new method provides a stable and useful measure of irreplaceability.
  • Global irreplaceability mapping is essential for effective conservation planning.
  • Highly irreplaceable sites must be integrated into global biodiversity frameworks, like the 30% by 2030 target.