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Advancing Marine Ecosystem Sustainability Through Microplastic Pollution Mitigation

A Special Issue of Sustainability (ISSN 2071-1050) belonging to the section "Sustainable Oceans".

Deadline for manuscript submissions: 6 January 2027 | Viewed by 2783

Editors


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Guest Editor
Department of Biology, University of Bahrain, Zallaq P.O. Box 32028, Bahrain
Interests: microplastic toxicity; bioremediation; marine pollution mitigation; plastic degradation strategies; environmental remediation technologies; marine ecosystem health; pollution impact assessment

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Guest Editor
Independent Researcher, Manama P.O. Box 18165, Bahrain
Interests: environmental sustainability; SDGs; ESG

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Guest Editor
Department of Chemistry, University of Bahrain, Zallaq P.O. Box 32038, Bahrain
Interests: nanomaterials; synthesis and applications; plastic and microplastic remediation; host–guest chemistry

Special Issue Information

Dear Colleagues,

Marine ecosystems play a vital role in maintaining global biodiversity, regulating climate systems, and ensuring food security. However, these ecosystems face growing threats from microplastic pollution—a widespread environmental problem stemming from the breakdown of larger plastics and direct industrial sources. Microplastics penetrate marine food chains, compromise species health, and disrupt habitat conditions, ultimately threatening ecological stability. In addition to environmental impacts, microplastic contamination endangers human health through seafood consumption and weakens the economic viability of fisheries and coastal tourism.

The complexity and persistence of microplastic pollution stem from its multiple sources and its interactions with other environmental stressors, including chemical pollutants and climate change. Traditional waste management practices and linear consumption patterns have proven inadequate to address this issue. Consequently, there is an urgent need for innovative solutions—such as advanced filtration systems, enhanced plastic lifecycle management, policy reforms, and community-led initiatives. These approaches must integrate ecological, technological, and socio-economic considerations to secure the long-term sustainability of marine ecosystems.

This Special Issue aims to connect existing knowledge gaps by promoting interdisciplinary research focused on the causes, consequences, and potential solutions to microplastic pollution. Through promoting scientific insights and implementing practical strategies, it seeks to contribute to global initiatives for cleaner and more resilient marine ecosystems.

Aim of this Special Issue

This aim of this Special Issue is to improve understanding and establish useful strategies for reducing microplastic pollution in order to protect marine ecosystems. Contributions that address innovative technologies, legislative frameworks, ecological assessments, and socioeconomic policies that collectively tackle this global issue are encouraged. This issue aims to produce practical insights and technologies that assist sustainable marine resources and healthier oceans by fostering interdisciplinary collaboration.

Dr. Layla Hazeem
Dr. Abdulkarim Hasan Rashed
Dr. Suad Ahmed Rashdan
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microplastic pollution
  • marine ecosystem sustainability
  • plastic lifecycle management
  • ocean conservation
  • environmental policy
  • pollution mitigation strategies
  • marine biodiversity
  • climate change interactions
  • socio-economic impacts
  • innovative filtration technologies

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Published Papers (2 papers)

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Research

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24 pages, 1856 KB  
Article
Plastic Footprints: Evaluation of Microplastic Contamination in Oyster Bed Ecosystems in the Kingdom of Bahrain
by Zeynep Kilinc, Gamze Yesilay, Batool Ahmed, Layla Hazeem and Reem AlMealla
Sustainability 2026, 18(10), 5143; https://doi.org/10.3390/su18105143 - 20 May 2026
Viewed by 737
Abstract
This study provides the first comprehensive assessment of microplastic (MP) contamination within oyster bed ecosystems of the Kingdom of Bahrain. Sediment, water, and oyster samples were collected from six sites representing diverse environmental conditions. Raman spectroscopy identified the presence of 12 distinct polymer [...] Read more.
This study provides the first comprehensive assessment of microplastic (MP) contamination within oyster bed ecosystems of the Kingdom of Bahrain. Sediment, water, and oyster samples were collected from six sites representing diverse environmental conditions. Raman spectroscopy identified the presence of 12 distinct polymer types, with polypropylene (PP), polyurethane (PU), poly(ethylene terephthalate)/diamine/multi-walled carbon nanotube (PET/diamine/MWCNT), and fluorinated ethylene propylene (FEP) being the most prevalent. MPs occurred predominantly as fragments, films, and pellets, with black being the most common color across all matrices. MP abundances ranged from 750 to 1850 MPs/kg dry weight in sediments, 2100–9600 MPs/L in water, and 1.78–5.25 MPs/individual in oysters, with particles (<50 µm) most frequent in oyster tissues. Although spatial variation was evident across regions, detected polymers included types associated with known ecotoxicological risks. No significant correlation was observed between sediment grain size and MP abundance, suggesting that additional hydrodynamic or anthropogenic factors may influence MP distribution. Overall, this study provides critical baseline data on MP contamination in Bahrain’s marine environments and highlights the need for continued monitoring to assess potential risks to marine ecosystems and seafood safety. It also contributes to the limited understanding of MPs in the Arabian Gulf, informing future monitoring, conservation and policy initiatives that support long-term environmental sustainability. Full article
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Review

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21 pages, 678 KB  
Review
Climate–Pollution Synergies in Hyper-Arid Marine Ecosystems: Mechanisms, Sustainability Impacts, and Future Directions
by Dalal Mohamed, Omnia Mohamed, Sumaya Abiib and Azza Naïja
Sustainability 2026, 18(9), 4518; https://doi.org/10.3390/su18094518 - 4 May 2026
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Abstract
Hyper-arid marine ecosystems, characterized by extreme environmental conditions, are experiencing intensified stress from the synergistic effects of climate change and pollution. This review synthesizes current knowledge on these interactions in Qatar’s coastal waters, serving as a model system for the Arabian Gulf. We [...] Read more.
Hyper-arid marine ecosystems, characterized by extreme environmental conditions, are experiencing intensified stress from the synergistic effects of climate change and pollution. This review synthesizes current knowledge on these interactions in Qatar’s coastal waters, serving as a model system for the Arabian Gulf. We document significant accumulations of heavy metals, petroleum hydrocarbons, microplastics, and emerging contaminants near urban and industrial zones. The region’s rapid warming, hypersalinity, and restricted circulation amplify pollutant toxicity through mechanisms such as increased bioavailability, oxidative stress, and impaired physiological responses. These synergies elevate mortality in sensitive species by 50–100% compared to single stressors, push organisms beyond their physiological limits, and trigger biodiversity loss. As an example, given a baseline of around USD 148 million, a 30% decrease in exploitable fish biomass might result in an annual loss of approximately USD 45 million in the value of Qatar’s fisheries and aquaculture industry. Despite growing evidence, critical gaps persist in understanding mixture toxicity under Gulf-specific extremes, endocrine and neurobehavioral endpoints, and quantitative ecosystem service valuations. We conclude by highlighting emerging solutions, including IoT-based monitoring, AI-driven forecasting, and nature-based remediation, as pathways to enhance resilience under accelerating environmental change. These findings have important implications for marine ecosystem sustainability, food security, and sustainable coastal management in Qatar and other hyper-arid regions. This synthesis establishes Qatar’s coastal ecosystem as a global model for understanding climate–pollution feedback in hyper-arid seas. Full article
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