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Impacts of an industrial deep-sea mining trial on macrofaunal biodiversity

Identification

Clé publique

radar:r-489dd89c2f38d8ef1411a8b4abeb28f9

Auteurs

Eva C. D. Stewart · Helena Wiklund · Lenka Neal · Guadalupe Bribiesca‐Contreras · Regan Drennan · Corie M. B. Boolukos · Lucas D. King · Muriel Rabone · Georgina Valls Domedel · Amanda Serpell‐Stevens · María Belén Arias · Thomas G. Dahlgren · Tammy Horton · Adrian G. Glover

Année déclarée

2025

Langue déclarée

en

Type source

article

Première détection

2026-11-14T02:40:10.285011+00:00

Dernière observation des métadonnées

2026-11-14T02:40:10.285011+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

Natural History Museum · University of Southampton · University of Gothenburg · National Oceanography Centre · University College Cork · University College London · NORCE Research AS

Pays d’affiliation déclarés

GB · IE · NO · SE

Résumé documentaire — langue originale

In 2022 a large-scale test of a commercial deep-sea mining machine was undertaken on the abyssal plain of the eastern Pacific Ocean at a depth of 4,280 m, recovering over 3,000 t of polymetallic nodules. Here, using a quantitative species-level sediment-dwelling macrofaunal dataset, we investigated spatio-temporal variation in faunal abundance and biodiversity for 2 years before and 2 months after test mining. This allowed for the separation of direct mining impacts from natural background variation, which we found to be significant over the 2-year sampling period. Macrofaunal density decreased by 37% directly within the mining tracks, alongside a 32% reduction in species richness, and significantly increased community multivariate dispersion. While species richness and diversity indices within the tracks were reduced compared with controls, diversity was not impacted when measured by sample-size independent measures of accumulation. We found no evidence for change in faunal abundance in an area affected by sediment plumes from the test mining; however, species dominance relationships were altered in these communities reducing their overall biodiversity. These results provide critical data on the effective design of abyssal baseline and impact surveys and highlight the value of integrated species-level taxonomic work in assessing the risks of biodiversity loss.

Identifiants

OPENALEX

https://openalex.org/W4417028026

DOI

10.1038/s41559-025-02911-4

PMID

https://pubmed.ncbi.nlm.nih.gov/41350401

PMCID

https://www.ncbi.nlm.nih.gov/pmc/articles/12890587

Repères documentaires

Famille documentaire

article

Types déclarés par les sources

article

Éditeurs

Nature Portfolio

Les mentions d’entités ne constituent pas une preuve de reconnaissance juridique. La juridiction étudiée est distincte du pays d’affiliation des auteurs.

Sources

OpenAlex · Document 1

• Document · https://doi.org/10.1038/s41559-025-02911-4

Statut documentaire

Pertinence à examiner

Bibliothèque

Cette identité n’est pas encore intégrée à la Bibliothèque juridique.