Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 114, Issue -, Pages 58-64Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2015.12.013
Keywords
Plastic; Polyurethane foam; Mercury; Management; Wreck; Compact fluorescent light
Funding
- South African Regional Cooperation Fund for Scientific Research and Technological Development [65290]
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Isolated coral atolls are not immune from marine debris accumulation. We identified Southeast Asia, the Indian sub-continent, and the countries on the Arabian Sea as most probable source areas of 50 000 items on the shores of St. Brandon's Rock (SBR), Indian Ocean. 79% of the debris was plastics. Flip-flops, energy drink bottles, and compact fluorescent lights (CFLs) were notable item types. The density of debris (0.74 m(-1) shore length) is comparable to similar islands but less than mainland sites. Intact CFLs suggests product-facilitated long-range transport of mercury. We suspect that aggregated marine debris, scavenged by the islands from currents and gyres, could re-concentrate pollutants. SBR islets accumulated debris types in different proportions suggesting that many factors act variably on different debris types. Regular cleaning of selected islets will take care of most of the accumulated debris and may improve the ecology and tourism potential. However, arrangements and logistics require more study. (C) 2016 Elsevier Ltd. All rights reserved.
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