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Unravelling spatio-temporal patterns of suspended microplastic concentration in the Natura 2000 Guadalquivir estuary (SW Spain): Observations and model simulations

Marine Pollution Bulletin 2021 50 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Daniel González‐Fernández, Daniel González‐Fernández, Andrés Cózar Rocío Quintana, Daniel González‐Fernández, María Bermúdez, Manuel Díez‐Minguito, Andrés Cózar Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Andrés Cózar Andrés Cózar Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Rocío Quintana, Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Rocío Quintana, Rocío Quintana, Daniel González‐Fernández, César Vílas, María Bermúdez, Manuel Díez‐Minguito, Andrés Cózar Rocío Quintana, Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Rocío Quintana, Andrés Cózar María Bermúdez, Daniel González‐Fernández, Andrés Cózar Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Rocío Quintana, Daniel González‐Fernández, Rocío Quintana, Rocío Quintana, Rocío Quintana, Daniel González‐Fernández, Daniel González‐Fernández, Daniel González‐Fernández, Andrés Cózar Andrés Cózar Andrés Cózar Andrés Cózar Andrés Cózar Manuel Díez‐Minguito, Daniel González‐Fernández, Daniel González‐Fernández, Andrés Cózar Andrés Cózar Daniel González‐Fernández, Andrés Cózar Andrés Cózar Andrés Cózar Andrés Cózar Manuel Díez‐Minguito, Andrés Cózar Andrés Cózar Daniel González‐Fernández, Andrés Cózar Andrés Cózar Daniel González‐Fernández, Andrés Cózar Andrés Cózar Daniel González‐Fernández, Andrés Cózar

Summary

Researchers combined field observations and computational modeling to map the spatial and temporal distribution of suspended microplastics in the Guadalquivir estuary, a protected Natura 2000 site in Spain. The study found that microplastic concentrations were influenced by river flow, tidal dynamics, and proximity to urban areas, with the estuary acting as a conduit for transporting land-based plastic pollution to the ocean.

Polymers
Study Type Environmental

Microplastics (MPs) patterns in a weakly-stratified estuary were investigated using a combined approach of observations and modeling. The study was conducted in the Guadalquivir River Estuary, which is of high environmental value, yet significantly altered by human activities. The study aims to contribute to understanding and quantifying the land-ocean transport of MPs. Mean concentrations of MPs in the estuary were 0.041itemsm<sup>-3</sup>, with maximum values up to 0.20itemsm<sup>-3</sup>, in agreement with the range reported in other estuaries. Polyethylene floating MPs were predominant. Relationships between increases in MP concentration and local rainfall events were identified in the middle estuary when there were no significant discharges from the head dam. Modeling results mimicked observations and revealed the effects of tidal straining, density-driven, and river flow-induced circulation on the net transport. Convergence of transports favors the MPs trapping in the vicinity of Doñana National Park, overlapping the location of the Estuarine Turbidity Maximum.

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