Genetic diversity targets and indicators in the CBD post-2020 Global Biodiversity Framework must be improved Article - Août 2020

Sean Hoban, Michael Bruford, Josephine d'Urban Jackson, Margarida Lopes-Fernandes, Myriam Heuertz, Paul Hohenlohe, Ivan Paz-Vinas, Per Sjögren-Gulve, Gernot Segelbacher, Cristiano Vernesi, Sally Aitken, Laura Bertola, Paulette Bloomer, Martin Breed, Hernando Rodríguez-Correa, W. Chris Funk, Catherine Grueber, Margaret Hunter, Rodolfo Jaffe, Libby Liggins, Joachim Mergeay, Farideh Moharrek, David O'Brien, Rob Ogden, Clarisse Palma-Silva, Jennifer Pierson, Uma Ramakrishnan, Murielle Simo-Droissart, Naoki Tani, Lisette Waits, Linda Laikre

Sean Hoban, Michael Bruford, Josephine d'Urban Jackson, Margarida Lopes-Fernandes, Myriam Heuertz, Paul Hohenlohe, Ivan Paz-Vinas, Per Sjögren-Gulve, Gernot Segelbacher, Cristiano Vernesi, Sally Aitken, Laura Bertola, Paulette Bloomer, Martin Breed, Hernando Rodríguez-Correa, W. Chris Funk, Catherine Grueber, Margaret Hunter, Rodolfo Jaffe, Libby Liggins, Joachim Mergeay, Farideh Moharrek, David O'Brien, Rob Ogden, Clarisse Palma-Silva, Jennifer Pierson, Uma Ramakrishnan, Murielle Simo-Droissart, Naoki Tani, Lisette Waits, Linda Laikre, « Genetic diversity targets and indicators in the CBD post-2020 Global Biodiversity Framework must be improved  », Biological Conservation, août 2020, pp. 1-11. ISSN 0006-3207

Abstract

The 196 parties to the Convention on Biological Diversity (CBD) will soon agree to a post-2020 global framework for conserving the three elements of biodiversity (genetic, species, and ecosystem diversity) while ensuring sustainable development and benefit sharing. As the most significant global conservation policy mechanism, the new CBD framework has far-reaching consequences- it will guide conservation actions and reporting for each member country until 2050. In previous CBD strategies, as well as other major conservation policy mechanisms, targets and indicators for genetic diversity (variation at the DNA level within species, which facilitates species adaptation and ecosystem function) were undeveloped and focused on species of agricultural relevance. We assert that, to meet global conservation goals, genetic diversity within all species, not just domesticated species and their wild relatives, must be conserved and monitored using appropriate metrics. Building on suggestions in a recent Letter in Science (Laikre et al., 2020) we expand argumentation for three new, pragmatic genetic indicators and modifications to two current indicators for maintaining genetic diversity and adaptive capacity of all species, and provide guidance on their practical use. The indicators are : 1) the number of populations with effective population size above versus below 500, 2) the proportion of populations maintained within species, 3) the number of species and populations in which genetic diversity is monitored using DNA-based methods. We also present and discuss Goals and Action Targets for post-2020 biodiversity conservation which are connected to these indicators and underlying data. These pragmatic indicators and goals have utility beyond the CBD ; they should benefit conservation and monitoring of genetic diversity via national and global policy for decades to come.

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