Exceptional and rapid accumulation of anthropogenic debris on one of the world’s most remote and pristine islands

TLDR

Remote islands have long been protected from human activity, yet plastic pollution has become ubiquitous and persists for decades, threatening the natural beauty and biodiversity of these isolated ecosystems as global production rises. The study aimed to comprehensively analyze the quantity and source of beach‑washed plastic debris on one of the world’s remotest islands. Researchers quantified debris density and traced its origins using systematic beach surveys and source attribution methods. Debris density reached the highest recorded level worldwide, indicating that remote islands near oceanic accumulation zones serve as significant sinks for marine plastic waste.

Abstract

Significance The isolation of remote islands has, until recently, afforded protection from most human activities. However, society’s increasing desire for plastic products has resulted in plastic becoming ubiquitous in the marine environment, where it persists for decades. We provide a comprehensive analysis of the quantity and source of beach-washed plastic debris on one of the world’s remotest islands. The density of debris was the highest recorded anywhere in the world, suggesting that remote islands close to oceanic plastic accumulation zones act as important sinks for some of the waste accumulated in these areas. As global plastic production continues to increase exponentially, it will further impact the exceptional natural beauty and biodiversity for which remote islands have been recognized.