Socio-ecological vulnerability assessment to Sargassum arrivals

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 22, 2025

The proliferation of holopelagic Sargassum spp. (Sargassum) in the tropical North Atlantic Ocean is concern for populations and coastal ecosystems Caribbean Sea, Gulf Mexico, West Africa. Satellite detections have enabled rough assessments quantity algae that drifts seasonally open ocean, with seasonal peaks biomass reaching 10 to 20 million tons since 2018. Although impacts on coast been widely publicized, there are no estimates quantities accumulate coasts. This study proposes novel vulnerability indicators combine information stranded biomass, ecosystem socioeconomic factors assess risks posed by regions. Quantities strip at regional scale were derived combining satellite ocean an algal growth-transport-stranding model. It shows amount accumulating order 10% estimated offshore has accumulated between 2 per year over last five years. Vulnerability indices identify Mexican Caribbean, northern Lesser Antilles, eastern Great Antilles as most vulnerable regions, facing significant ecosystemic pressures from influxes.

Language: Английский

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Evaluating Sea Level Rise Impacts on the Southeastern Türkiye Coastline: a Coastal Vulnerability Perspective

PFG – Journal of Photogrammetry Remote Sensing and Geoinformation Science, Journal Year: 2024, Volume and Issue: 92(4), P. 335 - 352

Published: April 19, 2024

Abstract Coastal areas are inherently sensitive and dynamic, susceptible to natural forces like waves, winds, currents, tides. Human activities further accelerate coastal changes, while climate change global sea level rise add the challenges. Recognizing safeguarding these coasts, vital for both socioeconomic environmental reasons, becomes imperative. The objective of this study is categorize coasts Mersin İskenderun bays along southeastern coast Türkiye based on their vulnerability human-induced factors using index (CVI) method. area encompasses approximately 520 km coastline. analysis reveals that zone comprises various levels total coastline: 24.7% (128 km) categorized as very high vulnerability, 27.4% (142 23.7% (123 moderate 24.3% (126 low vulnerability. Key parameters influencing include slope, land use, population density. High particularly prominent in plains characterized by gentle slopes, weak geological geomorphological features, significant value.

Language: Английский

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Long-Term Evolution of Significant Wave Height in the Eastern Tropical Atlantic between 1940 and 2022 Using the ERA5 Dataset

Journal of Marine Science and Engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 714 - 714

Published: April 26, 2024

Studies on the variability in ocean wave climate provide engineers and policy makers with information to plan, develop, control coastal offshore activities. Ocean waves bear climatic imprints through which global system can be better understood. Using recently updated ERA5 dataset, this study evaluated spatiotemporal distribution significant height (SWH) Eastern Tropical Atlantic (ETA). The short-term trends rates of change were obtained using Mann–Kendall trend test Theil–Sen slope estimator, respectively, decadal assessed wavelet transformation. Significant, positive monthly yearly a prevailing observed across domain. Observed suggest that stronger are getting closer coast modulated by Southern Northern mid-latitude storm fields. These observations have implications for increasing erosion eastern Atlantic.

Language: Английский

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Rice Margins Under Climate Change: Labour and Knowledge in Mangrove Rice Networks in Guinea‐Bissau

Development and Change, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

ABSTRACT The effects of climate change add to the challenges facing those with rice‐based livelihoods in West Africa. This article presents a long‐term ethnographic case study southern Guinea‐Bissau where, contrast other reported cases region, uncertainty regarding future mangrove rice production overlaps efforts rehabilitate abandoned paddies. Agricultural knowledge is produced, renewed and transmitted along construction site‐specific, techno‐ecological hybrids needed for water management fields. analyses role communal, reciprocal contract labour circulation between villages historically stable (rice refugia) where has been discontinuous margins). Knowledge experimentation are key local adaptation resilience programmes can play if they able adapt current needs, instance, by considering decentralized funding strategies. By promoting exchange services goods, decentralization facilitate redistribution labour, particularly refugia, as regional repositories, participate recovery margins. These connections revitalize strengthen networks their ability confront change.

Language: Английский

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Urban Beach Evolution in Saint Louis, Senegal (West Africa) using Shore-Based Camera Video Monitoring as a Management Tool

Regional Studies in Marine Science, Journal Year: 2025, Volume and Issue: unknown, P. 104050 - 104050

Published: Jan. 1, 2025

Language: Английский

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Advances in Remote Sensing and Deep Learning in Coastal Boundary Extraction for Erosion Monitoring

Geomatics, Journal Year: 2025, Volume and Issue: 5(1), P. 9 - 9

Published: Feb. 6, 2025

Erosion is a critical geological process that degrades soil and poses significant risks to human settlements natural habitats. As climate change intensifies, effective coastal erosion management prevention have become essential for our society the health of planet. Given vast extent areas, efforts must prioritize most vulnerable regions. Identifying prioritizing these areas complex task requires accurate monitoring forecasting its potential impacts. Various tools techniques been proposed assess risks, impacts rates erosion. Specialized methods, such as Coastal Vulnerability Index, specifically designed evaluate susceptibility boundaries, factor in monitoring, are typically extracted from remote sensing images. Due extensive scale complexity data, manually extracting boundaries challenging. Recently, artificial intelligence, particularly deep learning, has emerged promising tool this task. This review provides an in-depth analysis learning assist monitoring. imaging modalities (optical, thermal, radar), platforms (satellites, drones) datasets first presented provide context field. Artificial intelligence associated metrics then discussed, followed by exploration algorithms boundaries. The range basic convolutional networks encoder–decoder architectures attention mechanisms. An overview how other can be utilized also provided. Finally, current gaps, limitations future directions field identified. aims offer insights into through learning-based boundary extraction.

Language: Английский

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Disproportionate increase of flood-exposed population in Chinese cities under urban expansion and climate variation

Ecological Indicators, Journal Year: 2025, Volume and Issue: 172, P. 113314 - 113314

Published: March 1, 2025

Language: Английский

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Relevance of community perceptions in mapping cultural ecosystem services: Lessons from bio-cultural landscape of Bhitarkanika Wildlife Sanctuary, Odisha

Ocean & Coastal Management, Journal Year: 2025, Volume and Issue: 264, P. 107626 - 107626

Published: March 18, 2025

Language: Английский

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A multi component approach to predict erosion susceptibility of rocky coasts: marine, terrestrial and climatic forcing—an application in Southern Italy

Environmental Earth Sciences, Journal Year: 2025, Volume and Issue: 84(7)

Published: March 24, 2025

Language: Английский

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Integrating coastal protection structures into vulnerability assessments: A case study from Kerala, India

Ocean & Coastal Management, Journal Year: 2025, Volume and Issue: 266, P. 107670 - 107670

Published: April 4, 2025

Language: Английский

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