New research by CABI reveals that just five invasive alien species are causing US$0.9 – 1.1 billion in economic losses to smallholder farmers across six eastern African countries each year, equating to 1.8% – 2.2% of total agricultural GDP for the region. These losses are expected to grow to $1.0 – 1.2 billion per year over the next 5-10 years, highlighting the urgent need for coordinated responses at regional, national and international levels. Continue reading
After habitat destruction, invasive alien species are the second biggest threat to biodiversity worldwide. It has a significant impact on livelihoods and the economy, incurring losses of USD$1.4 trillion a year. Prior to 2012 many South-East Asian countries lacked the policies and information on the presence, distribution and impact of invasive species to properly manage this increasingly urgent threat. Continue reading
It is the end of December 2016, with clear skies over Niger. But as 2017 draws near prospects are grim for some 500 residents in Bani Kosseye, a village 80km from the capital Niamey. Agricultural production has been poor here, and families’ meagre stocks are expected to run out within a few weeks. People already fear famine. Continue reading
New research shows rates of alien species’ introduction are higher than ever. The increase in numbers of alien species does not show any sign of saturation at a global level, an international team of 45 researchers led by scientists from Senckenberg, Germany, and University of Vienna, Austria, has discovered. CABI’s Dr Marc Kenis, based in Switzerland, participated in the study as an expert in insect invasions in Europe, and the CABI Invasive Species Compendium was used as one of the main information sources for biological invasions worldwide. Continue reading
The fall armyworm, Spodoptera frugiperda, is making headlines worldwide for all the wrong reasons. The caterpillar crop pest, native to the Americas, was reported in Africa for the first time last year and is now rapidly marching across the continent. It is a voracious pest of maize and other staple crops and has already destroyed tens of thousands of hectares of farmland. As such, it risks devastating smallholder livelihoods throughout Africa. Given that CABI scientists predict it could reach Europe and Asia in a matter of years, it looks set to quickly become a global problem.
The case for action against fall armyworm is overwhelming. On the ground, CABI will support national extension services to help farmers identify the pest quickly and accurately, contribute to awareness-raising and conduct studies to work out the best ways to control it that are not overly dependent on insecticides. Alongside these efforts, CABI also has a range of freely-available materials to help people understand and manage fall armyworm. Continue reading
In this video, scientists and local people explain the dangers of Opuntia stricta, an invasive cactus weed covering large tracts of land in Kenya’s semi-arid Laikipia County, and efforts in place to tame its spread and adverse impacts. Continue reading
New research announced today by scientists at CABI confirms that a recently introduced crop-destroying armyworm caterpillar is now spreading rapidly across Mainland Africa and could spread to tropical Asia and the Mediterranean in the next few years, becoming a major threat to agricultural trade worldwide.