Plastic ingestion, accumulated heavy metals, and health metrics of four Larus gull species feeding at a coastal landfill in eastern Canada DOI Creative Commons
Kerry Schutten, André Morrill,

Akshaya Chandrashekar

и другие.

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 135107 - 135107

Опубликована: Июль 14, 2024

The objectives of this research were to assess ingested plastics and accumulated heavy metals in four urban gull species. Additionally, the relationships between selected demographic health metrics assessed. Between 2020–2021 during non-breeding seasons, 105 gulls (46 American herring (HERG, Larus argentatus smithsonianus), 39 great black-backed (GBBG, marinus), 16 Iceland (Larus glaucoides), 4 glaucous hyperboreus)) killed at a landfill coastal Newfoundland Labrador, Canada, as part separate, permitted kill-to-scare operations related aircraft safety. Birds necropsied, upper gastrointestinal tract contents processed using standard techniques, livers analyzed for As, Cd, Hg, Pb. plastics, demographics, assessed HERG GBBG. Across all species, 85 % birds had least one piece anthropogenic debris, with 79 ingesting plastic. We detected interspecific differences plastic ingestion hepatic trace metals, increased GBBG compared HERG. For GBBG, levels relatively greater higher scaled mass index, while more liver lead concentrations.

Язык: Английский

Decades of monitoring plastic pollution in seabirds in Canada: Spatial, temporal, and methodological insights DOI Creative Commons
Julia E. Baak,

Kristine E. Hanifen,

Mark L. Maddox

и другие.

Marine Pollution Bulletin, Год журнала: 2024, Номер 206, С. 116800 - 116800

Опубликована: Авг. 2, 2024

Plastic ingestion by seabirds is an increasing issue worldwide, yet species can vary in based on ecological and morphological differences. This provokes the question of which are better suited to monitor plastic across regions time. In Canada, we examined sympatric northern fulmars (Fulmarus glacialis), black-legged kittiwakes (Rissa tridactyla), thick-billed murres (Uria lomvia), black guillemots (Cepphus grylle). Here, present new data compare historical work inform pollution monitoring Canada. 2021, 51 % fulmars, 7 contained plastic, whereas had no pieces >1 mm. Regardless methods used collect process samples, continue have low levels compared European Arctic, but high other Canadian emphasizing their continued utility as a tool for

Язык: Английский

Процитировано

6
Introduction to the Marine Policy special issue on abandoned, lost and discarded fishing gear: Causes, magnitude, impacts, mitigation methods and priorities for monitoring and evidence-informed management DOI
Eric Gilman,

Kyle Antonelis,

Joan Drinkwin

и другие.

Marine Policy, Год журнала: 2023, Номер 155, С. 105738 - 105738

Опубликована: Июль 5, 2023

Язык: Английский

Процитировано

13
Biovectoring of plastic by white storks from a landfill to a complex of salt ponds and marshes DOI Creative Commons
Julián Cano-Povedano, Cosme López‐Calderón, Marta I. Sánchez

и другие.

Marine Pollution Bulletin, Год журнала: 2023, Номер 197, С. 115773 - 115773

Опубликована: Ноя. 22, 2023

Research into plastic pollution has extensively focused on abiotic vectors, overlooking transport by animals. Opportunistic birds, such as white storks (Ciconia ciconia) often forage landfills, where abounds. We assess loading ingestion and regurgitation of landfill in Cadiz Bay, a major stopover area for migratory south-west Spain. On average, we counted 599 per day moving between complex salt ponds marshes, they regurgitated pellets that each contained mean 0.47 g debris, dominated polyethylene. Modelling reliant GPS tracking estimated 99 kg >2 million particles were biovectored the wetland during 2022, with seasonal peaks followed migration patterns. data enabled correction field censuses identification deposition hotspots. This study highlights important role biovectoring plays coastal wetlands.

Язык: Английский

Процитировано

12
The use of vibrational spectroscopy and supervised machine learning for chemical identification of plastics ingested by seabirds DOI Creative Commons
Joseph Razzell Hollis, Jennifer L. Lavers, Alexander L. Bond

и другие.

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 134996 - 134996

Опубликована: Июнь 21, 2024

Plastic pollution is now ubiquitous in the environment and represents a growing threat to wildlife, who can mistake plastic for food ingest it. Tackling this problem requires reliable, consistent methods monitoring ingested by seabirds other marine fauna, including identifying different types of plastic. This study presents robust method rapid, reliable chemical characterisation plastics 1-50 mm size range using infrared Raman spectroscopy. We analysed 246 objects Flesh-footed Shearwaters (Ardenna carneipes) from Lord Howe Island, Australia, compared data yielded each technique: 92 % visually identified as were confirmed spectroscopy, 98 those low density polymers such polyethylene, polypropylene, or their copolymers. Ingested exhibit significant spectral evidence biological contamination reports, which hinders identification conventional library searching. Machine learning be used identify vibrational spectra with up 93 accuracy. Overall, we find that more effective technique range, appropriately trained machine models superior searching plastics.

Язык: Английский

Процитировано

5
Plastic ingestion, accumulated heavy metals, and health metrics of four Larus gull species feeding at a coastal landfill in eastern Canada DOI Creative Commons
Kerry Schutten, André Morrill,

Akshaya Chandrashekar

и другие.

Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 135107 - 135107

Опубликована: Июль 14, 2024

The objectives of this research were to assess ingested plastics and accumulated heavy metals in four urban gull species. Additionally, the relationships between selected demographic health metrics assessed. Between 2020–2021 during non-breeding seasons, 105 gulls (46 American herring (HERG, Larus argentatus smithsonianus), 39 great black-backed (GBBG, marinus), 16 Iceland (Larus glaucoides), 4 glaucous hyperboreus)) killed at a landfill coastal Newfoundland Labrador, Canada, as part separate, permitted kill-to-scare operations related aircraft safety. Birds necropsied, upper gastrointestinal tract contents processed using standard techniques, livers analyzed for As, Cd, Hg, Pb. plastics, demographics, assessed HERG GBBG. Across all species, 85 % birds had least one piece anthropogenic debris, with 79 ingesting plastic. We detected interspecific differences plastic ingestion hepatic trace metals, increased GBBG compared HERG. For GBBG, levels relatively greater higher scaled mass index, while more liver lead concentrations.

Язык: Английский

Процитировано

5