An increase in management actions has compensated for past climate change effects on desert locust gregarization in western Africa.

However, the lack of a positive trend in gregarization over the last 40 years in these low mountain areas suggests that it might be linked to the observed increase in management treatments. 4.2.

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Of those with enough data, 249 grid cells (58%) showed a significant trend in management among the 426 in total.

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