دورية أكاديمية
Trajectory, fate, and magnitude of continental microplastic loads to the inner shelf: A case study of the world's largest coastal shallow lagoon.
| العنوان: | Trajectory, fate, and magnitude of continental microplastic loads to the inner shelf: A case study of the world's largest coastal shallow lagoon. |
|---|---|
| المؤلفون: | Rodriguez C; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil. Electronic address: carolinarp@fcien.edu.uy., Silva P; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil., Moreira L; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil., Zacher L; Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, Brazil., Fernandes A; Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, Brazil., Bouyssou R; INRAE, 50 avenue de Verdun, 33612 CESTAS, cedex, France., Jalón-Rojas I; Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France., Moller O; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil., Garcia-Rodriguez F; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil; Centro Universitario Regional del Este (CURE), Ruta 9 intersección Ruta 15, Rocha, Uruguay., Pinho GLL; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil., Fernandes E; Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS 96203-900, Brazil. |
| المصدر: | The Science of the total environment [Sci Total Environ] 2024 Oct 20; Vol. 948, pp. 174791. Date of Electronic Publication: 2024 Jul 15. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Original Publication: Amsterdam, Elsevier. |
| مستخلص: | The Patos Lagoon estuary is a highly significant ecosystem where freshwater from a vast and densely populated area continuously flows into the Atlantic Ocean by coastal plumes, exporting not only freshwater but also sediment, nutrients, plastics, and other contaminants. In this work, numerical modeling tools together with field data were used to assess for the first time the capacity of the coastal plume to export microplastics (MPs) to the inner shelf under different hydrodynamic conditions. Two field surveys were conducted during plume events to quantify MP concentrations and validate the model approach. A bottom-up approach was employed to estimate the potential MP export from the estuary's domain to the Atlantic Ocean. MP concentration in surface plume waters ranged from 0.20 items m -3 to 1.37 items m -3 , confirmed by FTIR as synthetic polymers in a 90 %, being Polypropylene (PP) and Polyethylene (PE) the most abundant in a 73 %. The accumulation pattern was observed on the plume's frontal system, consistent with simulation results. The estimated average MP potential export rate attained 9.0 million items day -1 during moderate plume events and 47.5 million items day -1 during high discharge plume events. Strong discharge events, coupled with intense northeast winds, facilitated rapid southwestward export of MPs. Conversely, moderate to weak discharge events retained MPs closer to the estuary's mouth, enabling either longer trajectories or earlier deposition. Significant MP accumulation hotspots were identified in the gyre between the jetties and Cassino beach, as well as in the saline front within the plume boundaries. These accumulation zones may function as reservoirs for MP particles, potentially posing threats to local ecosystems. Understanding these dynamics is crucial for ongoing monitoring efforts to assess potential harmful interactions over time. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2024 Elsevier B.V. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Accumulation hotspots; Coastal plume; Numerical modeling; Plastic fiber transport; South Atlantic |
| تواريخ الأحداث: | Date Created: 20240717 Latest Revision: 20240808 |
| رمز التحديث: | 20240808 |
| DOI: | 10.1016/j.scitotenv.2024.174791 |
| PMID: | 39019291 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-1026 |
|---|---|
| DOI: | 10.1016/j.scitotenv.2024.174791 |