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Improving invasive ant eradication as a conservation tool : a review
BRB
Available Online

Hoffman, Benjamin ... et al.

2016
While invasive species eradications are at the forefront of biodiversity conservation, ant eradication failures are common. We reviewed ant eradications worldwide to assess the practice and identify knowledge gaps and challenges. We documented 316 eradication campaigns targeting 11 species, with most occurring in Australia covering small areas (b10 ha). Yellow crazy ant was targeted most frequently, while the bigheaded ant has been eradicated most often. Of the eradications with known outcomes, 144 campaigns were successful, totaling approximately 9500 ha, of which 8300 ha were from a single campaign that has since been partially re-invaded. Three active ingredients, often in combination, are most commonly used: fipronil, hydramethylnon, and juvenile hormone mimics. Active ingredient, bait, and method varied considerablywith respect to species targeted,which made assessing factors of eradication success challenging. We did, however, detect effects by active ingredient, number of treatments, and method on eradication success. Implementation costs increased with treatment area, and median costs were high compared to invasive mammal eradications. Ant eradications are in a phase of increased research and development, and a logical next step for practitioners is to develop best practices. A number of research themes that seek to integrate natural history with eradication strategies and methodologies would improve the ability to eradicate ants: increasing natural history and taxonomic knowledge, increasing the efficacy of active ingredients and baits, minimizing and mitigating non-target risks, developing better tools to declare eradication success, and developing alternative eradication methodologies. Invasive ant eradications are rapidly increasing in both size and frequency, and we envisage that eradicating invasive ants will increase in focus in coming decades given the increasing dispersal and subsequent impacts.
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.