University of Tasmania

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Size of marine debris items ingested and retained by petrels

Version 2 2024-04-17, 04:56
Version 1 2023-05-20, 09:51
journal contribution
posted on 2024-04-17, 04:56 authored by Lauren RomanLauren Roman, H Paterson, KA Townsend, C Wilcox, BD Hardesty, Mark HindellMark Hindell
Pollution of the world's oceans by marine debris has direct consequences for wildlife, with fragments of plastic <10 mm the most abundant buoyant litter in the ocean. Seabirds are susceptible to debris ingestion, commonly mistaking floating plastics for food. Studies have shown that half of petrel species regularly ingest anthropogenic waste. Despite the regularity of debris ingestion, no studies to date have quantified the dimensions of debris items ingested across petrel species ranging in size. We excised and measured 1694 rigid anthropogenic debris items from 348 petrel carcasses of 20 species. We found that although the size of items ingested by petrels scale positively with the size of the bird, 90% of all debris items ingested across species fall within a narrow “danger zone” range of 2–10 mm, overlapping with the most abundant oceanic debris size. We conclude that this globally profuse size range of marine plastics is an ingestion hazard to petrels.


Holsworth Wildlife Research Endowment


Publication title

Marine Pollution Bulletin








Ecology and Biodiversity, Institute for Marine and Antarctic Studies, Office of the School of Social Sciences


Pergamon-Elsevier Science Ltd

Publication status

  • Published

Place of publication

The Boulevard, Langford Lane, Kidlington, Oxford, England, Ox5 1Gb

Rights statement

Crown Copyright © 2019 Published by Elsevier Ltd. All rights reserved.

Socio-economic Objectives

180601 Assessment and management of terrestrial ecosystems, 190102 Ecosystem adaptation to climate change

UN Sustainable Development Goals

14 Life Below Water