Barau's petrel, Pterodroma baraui, as a bioindicator of plastic pollution in the South-West Indian Ocean: A multifaceted approach - Archive ouverte HAL
Article Dans Une Revue Marine Environmental Research Année : 2024

Barau's petrel, Pterodroma baraui, as a bioindicator of plastic pollution in the South-West Indian Ocean: A multifaceted approach

Audrey Cartraud
  • Fonction : Auteur

Résumé

Marine plastic pollution is well described by bioindicator species in temperate and polar regions but remains understudied in tropical oceans. We addressed this gap by evaluating the seabird Barau's petrel as bioindicator of plastic pollution in the South-West Indian Ocean. We conducted a multifaceted approach including necropsies of birds to quantify plastic ingestion; GPS tracking of breeding adults to identify their foraging areas; manta trawling of plastic debris to measure plastic pollution at sea and modelling of plastic dispersal. We developed a spatial risk index of seabird exposure to plastic ingestion. Seventy-one percent of the analysed birds had ingested plastic. GPS tracking coupled with manta trawling and dispersal modelling show that adults consistently foraged at places with high level of plastic concentration. The highest ingestion risk occurred in the northwest of Reunion Island and at latitude 30 degrees S. Our findings confirm that Barau's petrel is a reliable bioindicator of plastic pollution in the region.

Domaines

Chimie
Fichier principal
Vignette du fichier
1-s2.0-S0141113624003702-main.pdf (3.64 Mo) Télécharger le fichier
Origine Publication financée par une institution
Licence

Dates et versions

hal-04705867 , version 1 (23-09-2024)

Licence

Identifiants

Citer

Margot Thibault, Lisa Weiss, Romain Fernandez, Naïs Avargues, Sébastien Jaquemet, et al.. Barau's petrel, Pterodroma baraui, as a bioindicator of plastic pollution in the South-West Indian Ocean: A multifaceted approach. Marine Environmental Research, 2024, 202, pp.106709. ⟨10.1016/j.marenvres.2024.106709⟩. ⟨hal-04705867⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

More