Assessing the risk of marine litter accumulation in estuarine habitats

Mazarrasa, Inés; Puente, Araceli; Núñez, Paula Gabriela; Garcı́a, Andrés; Abascal, Ana J.; Juanes, José A.

doi:10.1016/j.marpolbul.2019.04.060

Cited by 40 publications

(28 citation statements)

References 35 publications

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“…TESEO has been calibrated and validated by comparing virtual particle trajectories to observed surface drifter trajectories at regional and local scale (Abascal et al, 2009(Abascal et al, , 2017aChiri et al, 2019). TESEO is a 3D numerical model conceived to simulate the transport and degradation of hydrocarbons, but it has also been successfully applied to the study of transport and accumulation of marine litter in estuaries (Mazarrasa et al, 2019; and in open waters (Ruiz et al, 2022a).…”

Section: Particle Transport Modelmentioning

confidence: 99%

Modelling floating riverine litter in the south-eastern Bay of Biscay: a regional distribution from a seasonal perspective

Ruiz

Rubio²,

Abascal³

et al. 2022

Ocean Sci.

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Abstract. Although rivers contribute to the flux of litter to the marine environment, estimates of riverine litter amounts and detailed studies on floating riverine litter behaviour once it has reached the sea are still scarce. This paper provides an analysis of the seasonal behaviour of floating marine litter released by rivers within the south-eastern Bay of Biscay based on riverine litter characterizations, drifters, and high-frequency radar observations and Lagrangian simulations. Virtual particles were released in the coastal area as a proxy of the floating fraction of riverine litter entering from rivers and reaching the open waters. Particles were parameterized with a wind drag coefficient (Cd) to represent their trajectories and fate according to the buoyancy of the litter items. They were forced with numerical winds and measured currents provided by high-frequency radars covering selected seasonal week-long periods between 2009 and 2021. To gain a better insight into the type and buoyancy of the items, samples collected from a barrier placed at the Deba River (Spain) were characterized at the laboratory. Items were grouped into two categories: low-buoyancy items (objects not exposed to wind forcing, e.g. plastic bags) and highly buoyant items (objects highly exposed to wind forcing, e.g. bottles). Overall, low-buoyancy items encompassed almost 90 % by number and 68 % by weight. Weakly buoyant items were parameterized with Cd = 0 % and highly buoyant items with Cd = 4 %; this latter value is the result of the joint analysis of modelled and observed trajectories of four satellite drifting buoys released at the Adour (France), Deba (Spain), and Oria (Spain) river mouths. Particles parameterized with Cd = 4 % drifted faster towards the coast through the wind, notably during the first 24 h. In summer, over 97 % of particles beached after 1 week of simulation. In autumn this value fell to 54 %. In contrast, low-buoyancy items took longer to arrive at the shoreline, particularly during spring with fewer than 25 % of particles beached by the end of the simulations. The highest concentrations (>200 particles km−1) were recorded during summer for Cd = 4 % in the French region of Pyrénées-Atlantiques. Results showed that the regions in the study area were highly affected by rivers within or nearby the region itself. These results couple observations and a river-by-river modelling approach and can assist decision-makers on setting emergency responses to high fluxes of floating riverine litter and on defining future monitoring strategies for heavily polluted regions within the south-eastern Bay of Biscay.

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Section: Particle Transport Modelmentioning

confidence: 99%

Modelling floating riverine litter in the south-eastern Bay of Biscay: a regional distribution from a seasonal perspective

Ruiz

Rubio²,

Abascal³

et al. 2022

Ocean Sci.

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“…With regard to marine environments, three studies conducted using a Delphi method were found: Mazarrasa et al (2019) who studied the impacts of marine litter accumulation in habitats in three estuaries along the Bay of Biscay, according to litter typologies (size and materials); Deshpande et al (2019) who collected data that could be useful to draft new strategies to prevent the impacts of abandoned, lost or discarded fishing gear; and Hofman et al (2020) who identified actions to protect marine environments from tourist behaviors on the great barrier reef of Australia.…”

Section: Introductionmentioning

confidence: 99%

A Delphi Based Approach to the Assessment of New Marine Litter Reduction and Processing Technologies

et al. 2022

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This work presents the most important aspects that should be considered for assessing new marine litter reduction and processing technologies. The most relevant technology features are highlighted using a Delphi method capable of gathering and handling a large quantity of valuable data in areas where information is lacking. This relies on judgements provided by recognized experts in a particular area of knowledge, through an organized procedure based on a structured questionnaire and its reiterations. The Delphi process developed in this study completed two rounds. In the first round, a questionnaire with 55 statements (potentially important aspects) was shared with experts and stakeholders from different types of institutions (Administrations, Marinas and Ports; Associations; Companies; Universities; and Research Centers). Appropriate statistical analysis of the responses determined the degree of consensus and the level of importance perceived for each aspect. Feedback information based on analysis of the answers provided during the first round was included in a second round of the survey that focused on the statements that did not gather enough consensus, and therefore needed to be reevaluated by the expert group. After checking the stability of the results between rounds, the conclusions are set out and a list of the aspects to be considered in different decision-making contexts is drawn (from technology development, investment to marketing and policy making) taking into account technical, environmental, socio-economic, and political issues.

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“…In contrast, other studies focused on macroplastic debris stranded on riverbanks related to (i) the accumulation and source of macroplastic debris in estuaries (Acha et al, 2003;Bruge et al, 2018;Mazarrasa et al, 2019;Yao et al, 2019;Schöneich-Argent et al, 2020), (ii) the transfer dynamics of macroplastic debris (Ivar do Sul et al, 2014), (iii) the seasonal variations in plastic quantity and quality (Cheung et al, 2016;Kurniawan and Imron, 2019a), or (iv) the influence of hydro-meteorological parameters in plastic distribution (Browne et al, 2010;Krelling and Turra, 2019;Kurniawan and Imron, 2019b). According to Schöneich-Argent et al (2020), macroplastics on riverbanks in estuaries are easy to sample and show the highest diversity when compared to macroplastics sampled in the water column, ate the water surface or on the riverbed.…”

Section: Introductionmentioning

confidence: 99%

Transfer dynamics of macroplastics in estuaries – New insights from the Seine estuary: Part 3. What fate for macroplastics?

Tramoy

Gaspéri

Colasse³

et al. 2021

Marine Pollution Bulletin

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Assessing the risk of marine litter accumulation in estuarine habitats

Cited by 40 publications

References 35 publications

Modelling floating riverine litter in the south-eastern Bay of Biscay: a regional distribution from a seasonal perspective

Modelling floating riverine litter in the south-eastern Bay of Biscay: a regional distribution from a seasonal perspective

A Delphi Based Approach to the Assessment of New Marine Litter Reduction and Processing Technologies

Transfer dynamics of macroplastics in estuaries – New insights from the Seine estuary: Part 3. What fate for macroplastics?

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