Environmental DNA complements scientific trawling in surveys of marine fish biodiversity
Type | Article | ||||||||||||
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Date | 2023-10 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Veron Pierre1, 2, Rozanski Romane1, 3, 4, Marques Virginie3, 4, Joost Stéphane5, Deschez Marie Emilie1, Trenkel Verena1, Lorance Pascal1, Valentini Alice6, Polanco F. Andréa7, Pellissier Loïc3, 4, Eme David1, 8, Albouy Camille1, 3, 4 | ||||||||||||
Affiliation(s) | 1 : DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAe, Institut-Agro—Agrocampus Ouest, Nantes, France 2 : Institut de biologie de l’École normale supérieure (IBENS), École normale supérieure, CNRS, INSERM, UniversitéPSL, Paris, 75005, France 3 : Ecosystem and Landscape Evolution, Institute of Terrestrial Ecosystems, Department of Environmental Systems Science, ETH Zürich, Zürich, 8092, Switzerland 4 : Unit of Land Change Science, Swiss Federal Research Institute WSL, Birmensdorf, 8903, Switzerland 5 : Group of Geospatial Molecular Epidemiology (GEOME), Laboratory for Biological Geochemistry (LGB), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland 6 : SPYGEN, Le Bourget-du-Lac, 73370, France 7 : Fundación Biodiversa, Bogotá, Calle 65 # 16 - 69 ;111221, Colombia 8 : RiverLY Research Unit, National Research Institute for Agriculture Food and Environment (INRAE), Villeurbanne, 69100, France |
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Source | Ices Journal Of Marine Science (1054-3139) (Oxford university press), 2023-10 , Vol. 80 , N. 8 , P. 2150-2165 | ||||||||||||
DOI | 10.1093/icesjms/fsad139 | ||||||||||||
WOS© Times Cited | 1 | ||||||||||||
Keyword(s) | Actinopterygii, Bay of Biscay, beta-diversity, Chondrichthyes, functional diversity, metabarcoding, phylogenetic diversity, taxonomic diversity | ||||||||||||
Abstract | Environmental DNA (eDNA) metabarcoding is a method to detect taxa from environmental samples. It is increasingly used for marine biodiversity surveys. As it only requires water collection, eDNA metabarcoding is less invasive than scientific trawling and might be more cost effective. Here, we analysed data from both sampling methods applied in the same scientific survey targeting Northeast Atlantic fish in the Bay of Biscay. We compared the methods regarding the distribution of taxonomic, phylogenetic, and functional diversity. We found that eDNA captured more taxonomic and phylogenetic richness than bottom trawling and more functional richness at the local scale. eDNA was less selective than trawling and detected species in local communities spanning larger phylogenetic and functional breadths, especially as it detected large pelagic species that escaped the trawl, even though trawling detected more flat fish. eDNA indicated differences in fish community composition that were comparable to those based on trawling. However, consistency between abundance estimates provided by eDNA metabarcoding and trawl catches was low, even after accounting for allometric scaling in eDNA production. We conclude that eDNA metabarcoding is a promising method that can complement scientific trawling for multi-component biodiversity monitoring based on presence/absence, but not yet for abundance. |
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