This review was in preparation for Tonga's 4th national report to the CBD (Convention on Biological Diversity)
Official DKAN data portal user manual.
User guide on getting started with the Inform Data Portal
This feasibility study was based on information gathered remotely, consultation with Tongan government agencies, community representatives and researchers familiar with the island. The authors did not visit Late and thus the recommendations presented herein do not reflect direct knowledge of the island.
pdf of Tonga State of Environment Report 2018 - lower resolution version best for viewing on computer.
Tonga State of Environment Report 2018 - high resolution version best for print.
6 page summary of the full SoE. Includes some updated information.
DEFINITION : Trend in consumption of ozone depleting substances (ODS)
PURPOSE : Tracks countries progress to phasing out ODS. Ozone depleting substances destroy the earth’s ozone which protects the earth from UV radiation
DESIRED OUTCOME : Negative trend in ODS consumption
DEFINITION : Trend in percentage production of energy from renewable sources
PURPOSE : Energy generation is a major source of GHG emissions. Pacific island countries also have limited capacity for oil and gas storage and are therefore highly vulnerable to fluctuations in fossil fuel price and availability
DESIRED OUTCOME : Positive trend in energy production from renewable sources
DEFINITION : Annual per capita generation of municipal solid waste
PURPOSE : Accurate measurement of per capita waste generation for better waste management
DESIRED OUTCOME : Stabilisation and subsequent negative trend in household waste generated
DEFINITION : Quantity of generated hazardous wastes processed/treated (including export)
PURPOSE : Treatment and safe storage of hazardous waste mitigates the risk to humans and nature. Hazardous materials can have direct and indirect, chronic or acute impacts
DESIRED OUTCOME : Full treatment/processing of all hazardous waste generated
DEFINITION : % of households connected to central sewerage system
PURPOSE : Tracks progress in managing sewage in a way that minimises the risk of water contamination. Untreated sewage and leaking septic systems are a major source of ground and surface water contamination
DESIRED OUTCOME : Positive trend in % of households connected to central sewerage system
In this report, a set of recommendations is provided for each indicator to support the next best steps for management action that will advance progress towards the target outcome and support Pacific people and biodiversity.
Within the Declaration there are five key areas under which there are different action tracks, these are actions that governments and environmental organisations recognise, endorse and are committed to implementing.
These five key areas are:
1. Our Ocean.
2. Our Islands.
3. Our Connection with Nature.
4. Implementation.
5. Call to Action.
In June/July 2002 an eradication programme to remove Pacific rats from Maninita Island in the Vava'u group of the Kingdom of Tonga was initiated. The techniques used were similar to those
used in successful rat eradications in New Zealand, in that Pestoff 20R pellets and a network of bait stations were used.
Conditions on the island were not what was expected, the forest having been adversely affected by cyclone Waka and subsequent defoliation by caterpillars, resulting in an open forest canopy. Rats were found to be present on the island in high numbers and were breeding.
Work is based around country visits by the network coordinator to support PILN teams to identify and take strategic action to manage their priority invasive species. The network is functioning by sharing awareness of successful activities being earned out by the teams, providing the mechanism for other teams to do the same, and actively encouraging them to do so.
Capacity building is linked to on-going invasive species projects and achieved through workshops and exchanges.
Williamson and Sabath (1982) have demonstrated a significant relationship between modern population size and environment by examining atoll area and rainfall in the Marshall Islands. The present work seeks to extend that argument into prehistory by examining the relationship of ancient habitation sites and size of aroid pit agricultural systems to atoll land area and rainfall regime along the 1,500-3,500 mm precipitation gradient in the Marshall Islands.