Add to ORKGInternational audienceUrbanisation is one of the main drivers of landscape modification, as vegetation andopen lands are replaced by paved surfaces, roads and buildings. These changes imply thephenomenon of urban heat islands – urban and suburban areasshow increased temperaturescompared to their rural surroundings. However, its influences on flowering period and polli-nator activity remains poorly investigated.We surveyed 12 meadows managed by local practitioners with standardised native seed mixesin the M ́etropole Europ ́eenne de Lille (northern France). Sites were selected according to anurban gradient (three urbanisation levels, based on the proportion of impervious areas withina 500m radius), and were visited bi-weekly ...