Paradise Trashed: Sources and solutions to marine litter in a small island developing state.

Anthropogenic marine litter pollution is a serious issue facing oceans worldwide. Limited data exists on this pollution issue for South Pacific Island nations and for Small Island Developing States (SIDS) in general. This study presents the first extensive baseline survey of macro-sized marine litter on Mo'orea (0.75 items m-2) and Tahiti (0.95 items m-2), French Polynesia. Not unexpectedly, marine litter was dominated by plastics (58%); however, glass also made up a significant portion (21%). Sixty percent of recovered marine litter from both islands was derived from local land-based catchments, indicating that the bulk of the litter is from local sources. Measures to address the waste issue in French Polynesia will be discussed with a cash-for-container scheme for locally produced beer showing promising positive environmental results, and further strategies for waste management in SIDS raised.

Seabirds and plastics don't mix: Examining the differences in marine plastic ingestion in wedge-tailed shearwater chicks at near-shore and offshore locations.

Plastic ingestion by wedge-tailed shearwaters (WTS) nesting at near-shore and offshore sites along the east coast of Australia were investigated. Ingestion rates were at 20% in near-shore lavaged WTS, where the beaches were significantly more polluted, compared to 8% in birds at offshore sites. The material and colour of recovered plastics at offshore sites differed significantly between beach surveys and that ingested by seabirds in the same area. This pattern was not evident near-shore. Hence, in near-shore environments birds may feed locally and are influenced by nearby plastics, compared to birds offshore. The origins of marine debris between near-shore and offshore beaches differed; with land-based sources unsurprisingly having more influence on near-shore sites. The findings of this study indicate the need for localised data to address and manage this pollutant, with nesting seabirds at greater risk in near-shore environments. A preliminary modified ecological quality objective for WTS is presented.

The ugly face of tourism: Marine debris pollution linked to visitation in the southern Great Barrier Reef, Australia.

Marine debris is one of the most significant issues facing oceans worldwide. The sources of this debris vary depending on proximity to urban centres and the nature of activities within an area. This paper examines the influence of tourism in the southern Great Barrier Reef (GBR), and its contribution to litter levels in the region. By conducting beach debris surveys on occupied and unoccupied islands, this study found that debris was prevalent throughout the region with significant differences in material types between locations. The greatest source of debris from publically accessible islands was tourist-related, with this source also influencing debris loads on nearby uninhabited islands. A focus on debris at Heron Island, showed that sites close to amenities had greater levels of tourist-sourced items like cigarette butts. These findings indicate the contribution of tourists to this problem and that working with operators and managers is needed to minimise visitor impacts.