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Satellite imagery helps fight locust plagues in North Africa

DMC International Imaging (DMCii) is helping The Algerian Space Agency (ASAL) to predict the spread of locust plagues across North Africa as part of a pro-active approach to tackle the destructive phenomenon using satellite imagery.

Every year, North Africa is subjected to locust plagues that threaten to decimate crops and endanger countries’ food security. The satellite imagery is used to assess vegetation conditions, which helps to predict the locations of locust breeding grounds. The imagery, from the UK-DMC2 satellite, is used in conjunction with weather data to help create locust forecasts and focus the application of pesticides to prevent the spread of swarms.

Last year, in a six-month summer campaign to fight the spread of locusts, DMCii acquired monthly images of regions in Southern Algeria, Northern Mali and Northern Niger for ASAL. Now, imagery is being acquired before the summer season starts, to predict as well as monitor the threat of locusts.

Mr Karim Houari, International Cooperation Director of the Algerian Space Agency commented: “The use of satellite imagery has helped us in the past, during the invasion period, to identify and control areas at risk of locust swarms. This year, in terms of locust risk prediction in remission period, we used DMCii data for the ecological assessment of locust breeding areas (biotopes). It is an important contribution for the rationalisation of local response and to reduce damage of this destructive phenomenon.”

Paul Stephens, Director of Sales and Marketing at DMCii, said: “The ability to get timely imagery of large areas is vital because locust swarms can develop quickly and travel about 100km a day. Our 650km wide images allow large areas of land, spanning multiple countries, to be rapidly monitored, helping the local authorities combat locust swarms before they can migrate across the continent.”

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DMC images enable regular monitoring of very large areas at high resolution, allowing
detection of small areas of new vegetation after any rainfall. These show up as false colour
red patches in the desert. The circular areas are irrigated crops which, as often the main
source of vegetation in some areas, are put at special risk from locust swarms. Images
which show sudden increases in vegetation can help identify potential hatching and
swarm areas for locusts, enabling preventative action to be taken.
Image credit: Image of Algeria acquired by UK-DMC2 satellite © DMCii, 2013.
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