Effectiveness of 20 years of conservation investments in protecting orangutans

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2022
Autor:innen
Santika, Truly
Sherman, Julie
Voigt, Maria
Ancrenaz, Marc
Wich, Serge A.
Wilson, Kerrie A.
Possingham, Hugh
Massingham, Emily
Meijaard, Erik
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Current Biology. Cell Press. 2022, 32(8), pp. 1754-1763.e6. ISSN 0960-9822. eISSN 1879-0445. Available under: doi: 10.1016/j.cub.2022.02.051
Zusammenfassung

Conservation strategies are rarely systematically evaluated, which reduces transparency, hinders the cost-effective deployment of resources, and hides what works best in different contexts. Using data on the iconic and critically endangered orangutan (Pongo spp.), we developed a novel spatiotemporal framework for evaluating conservation investments. We show that around USD 1 billion was invested between 2000 and 2019 into orangutan conservation by governments, nongovernmental organizations, companies, and communities. Broken down by allocation to different conservation strategies, we find that habitat protection, patrolling, and public outreach had the greatest return on investment for maintaining orangutan populations. Given the variability in threats, land-use opportunity costs, and baseline remunerations in different regions, there were differential benefits per dollar invested across conservation activities and regions. We show that although challenging from a data and analysis perspective, it is possible to fully understand the relationships between conservation investments and outcomes and the external factors that influence these outcomes. Such analyses can provide improved guidance toward a more effective biodiversity conservation. Insights into the spatiotemporal interplays between the costs and benefits driving effectiveness can inform decisions about the most suitable orangutan conservation strategies for halting population declines. Although our study focuses on the three extant orangutan species of Sumatra and Borneo, our findings have broad application for evidence-based conservation science and practice worldwide.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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biodiversity, conservation finance, evidence-based conservation, great apes, impact assessment, Indonesia, Malaysia, orangutan, Pongo, tropical forest
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ISO 690SANTIKA, Truly, Julie SHERMAN, Maria VOIGT, Marc ANCRENAZ, Serge A. WICH, Kerrie A. WILSON, Hugh POSSINGHAM, Emily MASSINGHAM, Alison M. ASHBURY, Erik MEIJAARD, 2022. Effectiveness of 20 years of conservation investments in protecting orangutans. In: Current Biology. Cell Press. 2022, 32(8), pp. 1754-1763.e6. ISSN 0960-9822. eISSN 1879-0445. Available under: doi: 10.1016/j.cub.2022.02.051
BibTex
@article{Santika2022-04-25Effec-57752,
  year={2022},
  doi={10.1016/j.cub.2022.02.051},
  title={Effectiveness of 20 years of conservation investments in protecting orangutans},
  number={8},
  volume={32},
  issn={0960-9822},
  journal={Current Biology},
  pages={1754--1763.e6},
  author={Santika, Truly and Sherman, Julie and Voigt, Maria and Ancrenaz, Marc and Wich, Serge A. and Wilson, Kerrie A. and Possingham, Hugh and Massingham, Emily and Ashbury, Alison M. and Meijaard, Erik}
}
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