Incidence of marine debris in seabirds feeding at different water depths

Tavares, Davi Castro; Moura, Jailson Fulgêncio de; Merico, Agostino; Siciliano, Salvatore

doi:10.1016/j.marpolbul.2017.04.012

Cited by 47 publications

(27 citation statements)

References 61 publications

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“…Despite PVC being denser than sea water, its presence on the strandline suggests that small fragments may evade deposition while carried in the water column or be transported locally as bed-load. The fact that fragments of PVC have been observed in the digestive tracts of seabirds, including procellariforms (Furtado et al, 2016), is consistent with the former assertion and may reflect the propensity of small particles to be suspended at the sea surface microlayer (Song et al, 2015) or the tendency of many pursuit plunging birds to feed well below the surface (Tavares et al, 2017).…”

Section: Implications For Exposure To Seabirdssupporting

confidence: 72%

Mobilisation kinetics of hazardous elements in marine plastics subject to an avian physiologically-based extraction test

Turner

2018

Environmental Pollution

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Samples of plastic collected from two beaches in southwest England (n = 185) have been analysed by XRF spectrometry for elements that are hazardous or restricted in synthetic polymers (namely, As, Ba, Br, Cd, Cr, Hg, Pb, Sb and Se). Overall, one or more restricted element was detected in 151 samples, with 15 cases exhibiting non-compliance with respect to the Restriction of Hazardous Substances (RoHS) Directive. Twelve plastics that were RoHS-non-compliant were subsequently processed into microplastic-sized fragments and subjected to an avian physiologically-based extraction test (PBET) that simulates the chemical conditions in the gizzard-proventriculus of the northern fulmar. Kinetic profiles of metal and metalloid mobilisation in the PBET were fitted using a pseudo-first-order diffusion model with rate constants ranging from ∼0.02 to 0.5 h, while profiles for Br were better fitted with a parabolic diffusion model and rate constants of 7.4-9.5 (μg L)h. Bioaccessibilities, based on maximum or equilibrium concentrations mobilised relative to total (XRF) concentrations, ranged from <1% for Cd and Se in polyethylene and polypropylene to over 10% for Br in a sample of expanded polystyrene and Pb in a sample of PVC. Calculations suggest that ingested plastic could contribute about 6% and 30% of a seabird's exposure to and accumulation of Pb and brominated compounds, respectively.

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Section: Implications For Exposure To Seabirdssupporting

confidence: 72%

Mobilisation kinetics of hazardous elements in marine plastics subject to an avian physiologically-based extraction test

Turner

2018

Environmental Pollution

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“…Seabirds, particularly Procellariiformes (i.e. albatross, petrels and shearwaters), have been recorded with some of the highest plastic ingestion rates, which have been attributed to factors such as foraging strategy, plastic colour and odour (Lavers and Bond, 2016, Savoca et al , 2016, Tavares et al , 2017, Verlis et al , 2013). Impacts from the ingestion of plastic may include damage to tissues, morbidity and starvation (Auman et al , 1997, Lavers et al , 2014).…”

Section: Introductionmentioning

confidence: 99%

Uncovering the sub-lethal impacts of plastic ingestion by shearwaters using fatty acid analysis

Puskic

Lavers

Adams

et al. 2019

Conservation Physiology

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“…One of the most significant quests in ecology today is to understand the impacts of plastic pollution on populations of marine megafauna. Evidence is accumulating about the ingestion of plastic by fishes, sea turtles, seabirds, and marine mammals (Schuyler et al, 2016;Lynam et al, 2017;Tavares et al, 2017). Plastics are also abundant in nests of some seabirds, such as the brown boobies S. leucogaster, with unknown consequences to chickens and the quality of breeding habitats (Grant et al, 2018;Battisti et al, 2019).…”

Section: Future Perspectivementioning

confidence: 99%

“…Future research should concentrate efforts on investigating which type of traits are most closely related to plastic accumulation among marine vertebrates. Feeding strategy and depth, for example, may play an important role in relation to plastic ingestion (Tavares et al, 2017).…”

Section: Future Perspectivementioning

confidence: 99%

Traits Shared by Marine Megafauna and Their Relationships With Ecosystem Functions and Services

et al. 2019

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Traditional ecological research has focused on taxonomic units to better understand the role of organisms in marine ecosystems. This approach has significantly contributed to our understanding of how species interact with each other and with the physical environment and has led to relevant site-specific conservation strategies. However, this taxonomic-based approach can limit a mechanistic understanding of how environmental change affects marine megafauna, here defined as large fishes (e.g., shark, tuna, and billfishes), sea turtles, marine mammals, and seabirds. Alternatively, an approach based on traits, i.e., measurable behavioral, physiological, or morphological characteristics of organisms, can shed new light on the processes influencing structure and functions of biological communities. Here we review 33 traits that are measurable and comparable among marine megafauna. The variability of these traits within the organisms considered controls functions mainly related to nutrient storage and transport, trophic-dynamic regulations of populations, and community shaping. To estimate the contributions of marine megafauna to ecosystem functions and services, traits can be quantified categorically or over a continuous scale, but the latter is preferred to make comparisons across groups. We argue that the most relevant traits to comparatively study marine megafauna groups are body size, body mass, dietary preference, feeding strategy, metabolic rate, and dispersal capacity. These traits can be used in combination with information on population abundances to predict how changes in the environment can affect community structure, ecosystem functioning, and ecosystem services.

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Incidence of marine debris in seabirds feeding at different water depths

Cited by 47 publications

References 61 publications

Mobilisation kinetics of hazardous elements in marine plastics subject to an avian physiologically-based extraction test

Mobilisation kinetics of hazardous elements in marine plastics subject to an avian physiologically-based extraction test

Uncovering the sub-lethal impacts of plastic ingestion by shearwaters using fatty acid analysis

Traits Shared by Marine Megafauna and Their Relationships With Ecosystem Functions and Services

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