Abstract :
[en] Background
In Havelange (Belgium), two farms are experiencing an ecological transition. We aimed to
evaluate the impact of their agricultural activities on insect pollinator communities. This
article depicts the situation at the very early stage of the farm transition. This study
supports the fact that the maintenance of farm-level natural habitats provides
environmental benefits, such as the conservation of two important pollinator communities:
wild bees and hoverflies. New information
Over two years (2018-2019), by using nets and coloured pan-traps, we collected 6301 bee
and hoverfly specimens amongst contrasting habitats within two farmsteads undergoing
ecological transition in Havelange (Belgium). We reported 101 bee species and
morphospecies from 15 genera within six families and 31 hoverfly species and
morphospecies from 18 genera. This list reinforces the national pollinator database by
providing new distribution data for extinction-threatened species, such as Andrena
schencki Morawitz 1866, Bombus campestris (Panzer 1801), Eucera longicornis (L.) and
Halictus maculatus Smith 1848 or for data deficient species, such as A. semilaevis Pérez
1903, A. fulvata (Müller 1766), A. trimmerana (Kirby 1802) and Hylaeus brevicornis
Nylander 1852.
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