The ASTER Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global digital elevation model (DEM) of land areas on Earth at a spatial resolution of 1 arc second (approximately 30 meter horizontal posting at the equator).
The development of the ASTER GDEM data products is a collaborative effort between National Aeronautics and Space Administration (NASA) and Japan’s Ministry of Economy, Trade, and Industry (METI). The ASTER GDEM data products are created by the Sensor Information Laboratory Corporation (SILC) in Tokyo.
SENTINEL-2 is a wide-swath, high-resolution, multi-spectral imaging mission, supporting Copernicus Land Monitoring studies, including the monitoring of vegetation, soil and water cover, as well as observation of inland waterways and coastal areas.
The SENTINEL-2 Multispectral Instrument (MSI) samples 13 spectral bands: four bands at 10 metres, six bands at 20 metres and three bands at 60 metres spatial resolution.
This report outlined the current realities observed the catchment area and the noted area grained from the various implemented activities.
National Invasive Species Strategy and Action Plan 2013-2020
This is a plan for the forests in Tonga.
The objectives of this study were as follows:
1. Resurvey and delineation of the sand resource of eight beaches on Tongatapu
2. Evaluation of the extent of recent coastal changes on Tongatapu including changes effected by cyclones and other natural events, beach sand extraction, and interaction between the two.
3. Investigation of the rate of sand production and implications for the sustainability of beach mining.
Status of Fanga'uta in 2015
This is a report of the terminal evaluation
Environmental conditions and anthropogenic impacts are key influences on ecological processes and associated ecosystem services. Effective management of Tonga’s marine ecosystems therefore depends on accurate and up-to-date knowledge of environmental and anthropogenic variables. Although many types of environmental and anthropogenic data are now available in global layers, they are often inaccessible to end users, particularly in developing countries with limited accessibility and analytical training.
As environmental problems continue to increase at an ever more rapid rate, exacerbated by the major threat of global climate change, the need for widespread remedial action is becoming ever more pressing. Scientific consensus on both the root causes of these problems and the measures required to tackle them is growing, while mass media and public interest has reached fever pitch.
This report is mainly focused on a research to find out the importance of Integrated Coastal Management to the coastline of Tongatapu. It aims to notify the changes of coastal areas and to what extent; identify these changes cause issues on the sustainability of the coastline in terms of social, economic and environmentally; and to evaluate the procedures of coastal monitoring and resource management in Tonga.
Invasive species are the primary cause of extinction on islands (IUCN Red List 2020, SPREP 2016, SOCO 2017). Invasive species have been formally identified as a threat for 1,531 species in the Pacific islands region to date (IUCN Red List, 2020). Pacific leaders have established two core regional indicators for invasive species management. Efforts for invasive management are ongoing in almost all Pacific island countries and territories.
Pacific islands are hotspots of unique biodiversity. Our ancestral traditions are linked
to nature. However, these traditions, the natural environment, and biodiversity are
threatened by changing global and regional environmental pressures, ecological
degradation, growing human populations, changing demands of our societies, and the
impacts of climate change and sea level rise.
Call Number: [EL]
ISBN/ISSN: 978-982-04-0905-7,978-982-04-0906-4
Physical Description: 156 p. 29 cm.
Marine protected areas (MPAs) have gained wide acceptance among coastal planners,
managers, researchers, and scientists as an effective tool that can be utilized to protect
threatened marine and coastal ecosystems. MPAs allow depleted breeding stocks of
important food fish and invertebrate species to regenerate and become re-established,
providing a foundation for sustainable fisheries. Typically, the MPA model comprises a core
no-take conservation area, within which harvest of fish and other consumable resources is
Here, we focus on the production of electricity from renewable sources. As such, we focus on a statistic distinct from SDG 7.2.1 “Renewable energy share in the total final energy consumption”. Data for this Pacific regional indicator are relevant for SDG 7.b.1 “Installed renewable energy-generating capacity in developing countries (in watts per capita)”.
Call Number: [EL]
Physical Description: 5 p.