The minimum land area requiring conservation attention to safeguard biodiversity

Author:

Allan James R.12ORCID,Possingham Hugh P.23ORCID,Atkinson Scott C.24ORCID,Waldron Anthony56,Di Marco Moreno78,Butchart Stuart H. M.910ORCID,Adams Vanessa M.11ORCID,Kissling W. Daniel1ORCID,Worsdell Thomas12ORCID,Sandbrook Chris13,Gibbon Gwili14ORCID,Kumar Kundan12ORCID,Mehta Piyush15ORCID,Maron Martine28ORCID,Williams Brooke A.28ORCID,Jones Kendall R.16,Wintle Brendan A.17,Reside April E.28ORCID,Watson James E. M.28ORCID

Affiliation:

1. Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, 1090 GE Amsterdam, Netherlands.

2. Centre for Biodiversity and Conservation Science, The University of Queensland, St Lucia, QLD 4072, Australia.

3. The Nature Conservancy, Arlington, VA 22203, USA.

4. United Nations Development Programme (UNDP), New York, NY, USA.

5. Cambridge Conservation Initiative, Department of Zoology, Cambridge University, Cambridge CB2 3QZ, UK.

6. Faculty of Science and Engineering ARU, Cambridge CB1 1PT, UK.

7. Department of Biology and Biotechnologies, Sapienza University of Rome, I-00185 Rome, Italy.

8. School of Earth and Environmental Sciences, The University of Queensland, St Lucia, QLD 4072, Australia.

9. BirdLife International, Cambridge CB2 3QZ, UK.

10. Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK.

11. School of Geography, Planning, and Spatial Sciences, University of Tasmania, Hobart, TAS 7001, Australia.

12. Rights and Resources Initiative, Washington, DC, USA.

13. Department of Geography, University of Cambridge, Cambridge CB2 3QZ, UK.

14. Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury CT2 7NR, UK.

15. Department of Geography and Spatial Sciences, University of Delaware, Newark, DE 19716, USA.

16. Wildlife Conservation Society, Bronx, NY 10460, USA.

17. School of BioSciences, University of Melbourne, Melbourne, VIC, Australia.

Abstract

Ambitious conservation efforts are needed to stop the global biodiversity crisis. In this study, we estimate the minimum land area to secure important biodiversity areas, ecologically intact areas, and optimal locations for representation of species ranges and ecoregions. We discover that at least 64 million square kilometers (44% of terrestrial area) would require conservation attention (ranging from protected areas to land-use policies) to meet this goal. More than 1.8 billion people live on these lands, so responses that promote autonomy, self-determination, equity, and sustainable management for safeguarding biodiversity are essential. Spatially explicit land-use scenarios suggest that 1.3 million square kilometers of this land is at risk of being converted for intensive human land uses by 2030, which requires immediate attention. However, a sevenfold difference exists between the amount of habitat converted in optimistic and pessimistic land-use scenarios, highlighting an opportunity to avert this crisis. Appropriate targets in the Post-2020 Global Biodiversity Framework to encourage conservation of the identified land would contribute substantially to safeguarding biodiversity.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference98 articles.

1. Intergovernmental Science-Policy Platform and Biodiversity and Ecosystem Services (IPBES) “Summary for policymakers of the global assessment report on biodiversity and ecosystem services of the Intergovernmental Science-Policy Platform and Biodiversity and Ecosystem Services” (IPBES secretariat 2019).

2. Convention on Biological Diversity (CBD) Conference of the Parties to the Convention on Biological Diversity “Long-term strategic directions to the 2050 vision for biodiversity approaches to living in harmony with nature and preparation for the post-2020 global biodiversity framework” (CBD/COP/14/9 CBD Conference of the Parties to the Convention on Biological Diversity 2018).

3. CBD “X/2. Strategic plan for biodiversity 2011-2020” (CBD 2011); www.cbd.int/decision/cop/?id=12268

4. Will protection of 17% of land by 2020 be enough to safeguard biodiversity and critical ecosystem services?

5. CBD “First draft of the post-2020 global biodiversity framework” (UN Environment Programme 2021); https://www.cbd.int/doc/c/abb5/591f/2e46096d3f0330b08ce87a45/wg2020-03-03-en.pdf.

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