Soil threats and land use restrictions
- The use of pesticide and fertilizer in agriculture which has increased dramatically since the production of squash for export in 1987
- Soil degradation, particularly declining soil organic matter
- Extreme weather events such as droughts and cyclones
- Sea level rise
- Free range pigs (population > 110,000 pigs in the 2015 Census) are very destructive, destroying food crops, understorey vegetation, and causing much soil erosion.