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Sustainable Risk Assessment and Coastal Vulnerability

A special issue of Sustainability (ISSN 2071-1050).

Deadline for manuscript submissions: 22 September 2026 | Viewed by 993

Editors


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Guest Editor
1. Department of Science and Technology, University Aberta, Lisbon, Portugal
2. Centre for Functional Ecology - Science for People & the Planet, Coimbra University, Coimbra, Portugal
3. Geographical Research Centre, Lisbon University, Lisbon, Portugal
Interests: physical geography; coastal dynamics; natural hazards assessment and sustainable development; coastal planning and management; sustainability assessment
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Geomorphology, Environment, and Coastal Management (GEGEL), Department of Earth Sciences, Cadi Ayyad University, Marrakech, Morocco
Interests: geology; hydrogeology; data analysis; geohazards assessment; spatial modeling

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Guest Editor
1. Centre for Social Studies, University of Coimbra, Coimbra, Portugal
2. Instituto Universitário de Lisboa (ISCTE-IUL), ISTAR, Lisboa, Portugal
Interests: resilience; risk assessment and risk management; social and territorial vulnerability; analysis and assessment of land use change; coastal flooding; coastal vulnerability

Special Issue Information

Dear Colleagues,

Coastal zones are among the most dynamic and densely populated environments on Earth, yet they are increasingly threatened by sea-level rise, erosion, flooding, slope instability, and growing human pressures. This Special Issue focuses on the assessment of coastal risks through sustainable, integrated, and forward-looking frameworks. It promotes cross-disciplinary approaches combining natural and social sciences to understand how physical coastal processes interact with human systems and to guide sustainable adaptation and land-use planning in a changing climate.

We invite original research, review papers, and applied case studies that address the quantification, modeling, and management of coastal hazards, exposure and social vulnerability, and resilience under current and projected sea-level rise scenarios. Submissions employing geospatial and remote sensing tools, machine learning techniques, or participatory scenario planning to support sustainable coastal risk governance are especially encouraged.

The purpose of this Special Issue is to bring together state-of-the-art methodologies and case studies that enhance our understanding of coastal system dynamics and their implications for sustainable land and resource management. By bridging physical hazard analysis, socio-economic vulnerability, and adaptive management, this Special Issue aims to define new pathways for resilience-oriented and sustainability-driven coastal planning.

While recent literature has advanced hazard mapping and exposure modelling, there remains a fragmentation between hazard analysis, vulnerability assessment, and long-term sustainability planning. Studies in journals such as Ocean & Coastal Management, Natural Hazards, and Geomorphology have examined physical processes and hazard quantification, but few works explicitly integrate multi-hazards, social dimensions, and sustainability frameworks. This Special Issue fills that gap by linking coastal risk assessment directly with sustainability science.

Contributions are expected to focus on the following:

  • Integrate physical and socio-economic datasets into unified risk frameworks;
  • Operationalize sustainability indicators in coastal risk assessment;
  • Translate risk and sustainable land use insights into actionable policy and management tools.

Papers will contribute to defining, measuring, and monitoring coastal sustainability, proposing quantitative indices, resilience metrics, and governance approaches for adaptation. They will explore socio-economic trade-offs, nature-based solutions, and participatory approaches for inclusive and equitable coastal futures.

By connecting geomorphological, ecological, and socio-economic perspectives, this Special Issue advances integrated coastal management that balances hazard mitigation, ecosystem services, and human well-being—fully aligned with UN Sustainable Development Goals 11 (Sustainable Cities), 13 (Climate Action), and 14 (Life Below Water).

Topics include the following:

  1. Coastal hazard and multi-hazard assessment.
  2. Exposure and social vulnerability assessment.
  3. Coastal resilience and adaptation under sea-level rise.
  4. Sustainable land-use and integrated coastal zone management (ICZM).
  5. Geospatial and machine learning approaches for hazard prediction.
  6. Participatory scenario planning and stakeholder engagement.
  7. Integrated coastal hazard or risk indices as sustainability tools.
  8. Nature-based and ecosystem-based solutions for coastal protection.

Dr. Jorge Trindade
Dr. Fatima El Bchari
Dr. José Leandro Barros
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

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

  • coastal vulnerability
  • sustainable risk assessment
  • sea-level rise
  • coastal resilience and adaptation
  • geospatial technologies
  • integrated coastal zone management (ICZM)

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Published Papers (1 paper)

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Research

20 pages, 3506 KB  
Article
The Role of Saltmarsh Restoration in Lowering Shoreline Vulnerability Within an Urban Estuary Environment: A Case Study from North of Portugal
by Jacinto Cunha, Loreto Garcia, Vânia Freitas, Cristina Marisa R. Almeida and Sandra Ramos
Sustainability 2026, 18(12), 6329; https://doi.org/10.3390/su18126329 - 20 Jun 2026
Viewed by 550
Abstract
Sea-level rise is accelerating coastal erosion and storm-driven flooding, increasing risks to estuarine ecosystems and coastal communities. Nature-based solutions (NbS), such as those including ecosystem restoration, are widely endorsed for climate change risk mitigation, yet their protective performance under rising sea levels remains [...] Read more.
Sea-level rise is accelerating coastal erosion and storm-driven flooding, increasing risks to estuarine ecosystems and coastal communities. Nature-based solutions (NbS), such as those including ecosystem restoration, are widely endorsed for climate change risk mitigation, yet their protective performance under rising sea levels remains poorly quantified across future scenarios. Here we combined scenario-based modelling with spatially explicit exposure mapping to assess how saltmarshes influence shoreline vulnerability under three Intergovernmental Panel on Climate Change (IPCC) Shared Socioeconomic Pathways (SSP) sea-level rise projections for 2050 and 2100. Using the InVEST Coastal Vulnerability Model and the Lima estuary (NW Portugal) as a case study, we showed that existing saltmarshes currently reduce mean shoreline exposure by approximately 5%, but this contribution declines with sea-level rise, falling to 2.6% by 2100 under SSP5-8.5, resulting in an increase in areas subject to High and Very High exposure risk. But under a saltmarsh revegetation scenario, model results indicated that this revegetation significantly increases the protection across all future scenarios, reducing the number of shoreline points in High and Very High exposure classes by up to 58% and lowering the potential coastal population exposure by up to 27% by 2100 under SSP5-8.5. However, the protective effect of saltmarshes diminished under the most extreme sea-level rise trajectories, indicating that saltmarsh revegetation alone may not be enough to fully offset accelerating coastal hazards. Our results demonstrate that saltmarsh restoration can deliver meaningful climate adaptation benefits; however, to safeguard estuarine systems and coastal communities under accelerating climate change in the long term, restoration actions must be integrated into broader adaptation strategies. Full article
(This article belongs to the Special Issue Sustainable Risk Assessment and Coastal Vulnerability)
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