Assala Loukili

UCa FAculty of science SEmlaliya Marrakech, Morocco

Abstract Title:

Spatial patterns, sources, and management implications of marine macro-litter along Moroccan coasts: A comparative assessment of Atlantic and Mediterranean beaches

Research Interests:

This study aims to provide a comprehensive assessment of macro-litter distribution and sources along the Atlantic and Mediterranean coasts of Morocco. A total of 21 beaches were surveyed using a standardized UNEP/MAP-based protocol adapted to 10 m transects, ensuring spatial representativeness across diverse coastal typologies. Litter items (>2.5 cm) were systematically collected, classified using the J-list, and quantified through density metrics (items/100 m; items/m²), while indices such as the Clean Coast Index (CCI), Hazardous Items Index (HII), and coefficient of variation (CV) were applied to evaluate pollution intensity and spatial heterogeneity. Results reveal a marked regional disparity, with the Mediterranean coast exhibiting significantly higher macro-litter loads (20,248 ± 622.21 items) compared to the Atlantic (10,073 ± 314.85 items), alongside greater variability. Plastic debris dominated, particularly fragments and cigarette butts, reflecting strong anthropogenic pressure. Spatial analysis highlights pollution hotspots linked to urbanization and tourism, notably Oued Aliane and Casablanca. These findings underscore the combined influence of geomorphological confinement and human activities in shaping litter accumulation patterns. The study implies an urgent need for targeted, site-specific management strategies and strengthened national policies integrating circular economy principles. Future research should focus on temporal monitoring, microplastic interactions, and transboundary pollution dynamics to better inform sustainable coastal management.