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  • Author South Pacific Commission
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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.
Integrated Climate Change Risks in the Agriculture and Health Sectors in Samoa (ICCRAHSS) - Agriculture Component: Geographical Information Systems Activities

GEF

,

Ministry of Agriculture and Fisheries (Government of Samoa)

,

UNDP

2010
In 1989, the Asian Development Bank provided technical assistance to the then Department of Agriculture and the Survey Department through a NZ Consulting Firm - ANZDEC under an ADB Land Resource Planning Survey Project. The Project provided training on mapping and GIS capability for the survey staff who were involved in the mapping work. Electronic GIS data and equipment were handed over to the Department of Agriculture at the end of the project which were later on damaged by Cyclone Ofa in 1990. A decade later, the Integrated Climate Change Risks in Agriculture and Health Sectors (ICCRAHSS) Project funded by the GEF through UNDP contracted the services of a consultant to provide: -improved GIS maps for soil, crops and rainfall distribution under different climatic projections; -review existing GIS systems and possible areas for collaboration; -consider a program to support capacity building on the use of the system and; -some applications that addresses options for climate change adaptation for the agriculture sector. Based on this report, a GIS system for the Ministry of Agriculture was procured to address the need for such a system to be in place with the expectation that the system will be properly utilized and maintained by relevant people.