Night-flying insects over UK in decline, weather radar study reveals

Scientists from the University of Leeds utilized UK Met Office radar data to track nocturnal insects over the UK between 2014 and 2021, revealing a significant decline in night-flying insect populations, particularly in northern regions. Daytime insect numbers remained stable or increased slightly in southern areas. The study analyzed data from 15 weather surveillance radars across the country, detecting approximately 11.2 trillion insects during daytime hours and over 5 trillion at night between 500 to 700 meters above ground. Insect abundance was higher in woodlands, grasslands, and urban areas but decreased in intensively farmed regions and areas with high artificial lighting. This research highlights the differential impact on day- and night-flying insects and underscores the importance of targeted conservation efforts.

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