131467 - A quantitative analysis linking seabird mortality and marine debris ingestion.pdf (1.18 MB)
A quantitative analysis linking seabird mortality and marine debris ingestion
Version 2 2024-04-17, 04:50
Version 1 2023-05-20, 01:54
journal contribution
posted on 2024-04-17, 04:50 authored by Lauren RomanLauren Roman, BD Hardesty, Mark HindellMark Hindell, C WilcoxProcellariiformes are the most threatened bird group globally, and the group with the highest frequency of marine debris ingestion. Marine debris ingestion is a globally recognized threat to marine biodiversity, yet the relationship between how much debris a bird ingests and mortality remains poorly understood. Using cause of death data from 1733 seabirds of 51 species, we demonstrate a significant relationship between ingested debris and a debris-ingestion cause of death (dose-response). There is a 20.4% chance of lifetime mortality from ingesting a single debris item, rising to 100% after consuming 93 items. Obstruction of the gastro-intestinal tract is the leading cause of death. Overall, balloons are the highest-risk debris item; 32 times more likely to result in death than ingesting hard plastic. These findings have significant implications for quantifying seabird mortality due to debris ingestion, and provide identifiable policy targets aimed to reduce mortality for threatened species worldwide.
Funding
Holsworth Wildlife Research Endowment
History
Publication title
Scientific ReportsVolume
9Issue
1Article number
3202Number
3202Pagination
1-7ISSN
2045-2322Department/School
Ecology and Biodiversity, Institute for Marine and Antarctic Studies, Office of the School of Social SciencesPublisher
Nature Publishing GroupPublication status
- Published