Freshwater fish diversity hotspots for conservation priorities in the Amazon Basin

Céline Jézéquel, Pablo A. Tedesco, William Darwall, Murilo S. Dias, Renata G. Frederico, Max Hidalgo, Bernard Hugueny, Javier Maldonado-Ocampo, Koen Martens, Hernan Ortega, Gislene Torrente-Vilara, Jansen Zuanon, Thierry Oberdorff

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We used the most comprehensive fish-occurrence database available (2355 valid species; 21,248 sampling points) and 3 ecological criteria (irreplaceability, representativeness, and vulnerability) to identify biodiversity hotspots based on 6 conservation templates (3 proactive, 1 reactive, 1 representative, and 1 balanced) to provide a set of alternative planning solutions for freshwater fish protection in the Amazon Basin. We identified empirically for each template the 17% of sub-basins that should be conserved and performed a prioritization analysis by identifying current and future (2050) threats (i.e., degree of deforestation and habitat fragmentation by dams). Two of our 3 proactive templates had around 65% of their surface covered by protected areas; high levels of irreplaceability (60% of endemics) and representativeness (71% of the Amazonian fish fauna); and low current and future vulnerability. These 2 templates, then, seemed more robust for conservation prioritization. The future of the selected sub-basins in these 2 proactive templates is not immediately threatened by human activities, and these sub-basins host the largest part of Amazonian biodiversity. They could easily be conserved if no additional threats occur between now and 2050.
Original languageAmerican English
Pages (from-to)956-965
Number of pages10
JournalConservation Biology
Volume34
Issue number4
DOIs
StatePublished - 1 Aug 2020

Keywords

  • conservation scenarios
  • freshwater biodiversity
  • neotropics
  • spatial prioritization

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