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Investigations on the soft bottom benthos in a Southwest Pacific atoll lagoon (Uvea, New Caledonia)
Biodiversity Conservation
Available Online

Chevillon Christophe

,

Clavier Jacques

,

Garrigue Claire

1998
Microbenthos and macrobenthos were quantitatively studied at 62 stations distributed regularly over the Uvea Atoll lagoon (850 km2). Sampling was performed using both SCUBA and a 0.1 m2 Smith Mclntyre grab. Mean estimates of ATP, chlorophyll a and phaeopigments were 297.3ng/cm2, 77.01 mg/m2 and 35.28 mg/m2 respectively. The mean macrobenthic biomass was 4.14 gAFDW/m2 of which the macrophytobenthos accounts for 39%. The benthic biomass decreased from the coast to the deepest parts of the lagoon. Macrophytes were most abundant in the coastal area and became progressively scarcer with increasing depth. By comparison, sessile species dominated on hard substrates in intermediate and deep zones. The abundance of the surface-deposit feeder group, that dominated the trophic structure of zoobenthos (33% of the macrofauna biomass), could be explained by a microphytic biomass six times higher than macrophytobenthic one in terms of carbon. Carnivores (32%) were mainly represented by necrophagous species, and filter-feeders (27%) by bivalves. Herbivores were rare. Four main benthic communities were identified on the basis of their macrobenthic assemblages using a Detrended Correspondence analysis. They corresponded to (1) a coastal zone, with the highest mud percentage in sediments, (2) an intermediate zone, with moderate depth and dominated by hard substrates, (3) a back reef zone, with thick sand layers, and (4) a deep zone dominated by hard substrates. Relative distribution of the trophic groups varied according to the different zones and suggests distinct functional characteristics for the different benthic assemblages. From a biogeographic point of view, this study highlighted the richness of the Uvea Atoll lagoon in terms of benthic species and biomass, compared to other central Pacific atoll lagoons.
Environmental Media Training for Representatives from Nine Pacific Island Countries Held in Suva
Environmental Governance, Biodiversity Conservation, Anamua: Treasures of the Pacific Environment
Available Online

Court, Caroline

A regional workshop was organized in Suva, Fiji, aimed at bolstering environmental journalism among media professionals from nine Pacific Island nations. Hosted by prominent environmental organizations, including the Secretariat of the Pacific Regional Environment Programme (SPREP), the event aimed to strengthen reporters’ ability to cover complex environmental issues, with an initial focus on climate change The Pacific is acutely vulnerable to environmental threats such as intensifying cyclones, sea-level rise, and coastal flooding, yet regional media remain under-equipped to report these dangers effectively. Better-informed journalism is seen as essential to influence policy, raise community awareness, and support climate adaptation strategies . The curriculum encompassed: Simplifying scientific and technical environmental information for broader audiences, Investigating and sourcing credible data, Crafting impactful narratives for print, radio, digital, and broadcast formats, Networking with climate and environmental experts to deepen reporting quality . Outcomes & Goals Journalists left the training inspired and better prepared, equipped with tools to translate complex climate issues into compelling public stories. The workshop aimed to foster a durable network of informed environmental correspondents across the Pacific, strengthening regional media collaboration and coverage.
Impact of Pesticides in the South Pacific: “Poisoned Paradise” – Case Studies from Tonga’s Megapode and Rarotonga’s Fly
Biodiversity Conservation, Waste Management and Pollution Control, Anamua: Treasures of the Pacific Environment
Available Online

Court, Caroline

1. Overview & Concerns A regional report titled “Poisoned Paradise” examines the environmental consequences of pesticide use across South Pacific islands, highlighting the ecological risks of toxic chemicals in agriculture and disease control . 2. Tonga – Tongan Megapode (“Malau”) The report raises concerns about pesticide exposure in Tonga’s fragile ecosystems, including impacts on unique species like the endangered Tongan megapode (Megapodius pritchardii). While direct studies are limited, ongoing threats include habitat degradation and potential chemical contamination in breeding grounds—often geothermal nests on volcanic soils. 3. Rarotonga – Indigenous Fly Species In Rarotonga (Cook Islands), pesticide usage to control agricultural pests and disease vectors (e.g., fruit flies, mosquitoes) threatens endemic insect populations, disrupting local food webs and ecological balance. Residues may accumulate in soils, water, and non-target wildlife—posing risks to biodiversity and human communities. 4. Broader Regional Themes The report indicates South Pacific nations increasingly rely on pesticides without sufficient regulation, labelling, monitoring, or disposal systems, leading to misuse and environmental contamination Over half of these countries report negative impacts from toxic chemicals in agriculture and public health initiatives, raising the need for stronger governance on chemical management. 5. Recommendations & Path Forward Strengthen regulatory frameworks: Licensing, proper labelling, safe use protocols. Build local capacity: Training for farmers, pest control operatives, and environmental officers. Promote integrated pest management and safer alternatives like biological controls. Enhance monitoring and waste disposal infrastructure to prevent environmental build-up. Foster regional cooperation to share research, best practices, and regulatory support.