Supplemental data for: Dominant wild pollinators of Moroccan crops are soil nesting and pollen generalist bees

Crop pollination by animals is a crucial ecosystem service that enhances
the yield and the quality of 75 % of major food crops worldwide. Wild bees
play a significant role in this process as they are diverse and abundant
visitors to crops and are known for their efficiency. However, in many
parts of the world, including Morocco, there is no available commented
list of wild bee species responsible for crop pollination. Here, we
investigated the presence of wild bees associated with agricultural
landscapes and described key trait characteristics of these bee species.
Pollinator communities were sampled by sweep net and pan trapping across a
total of 263 fields containing nine flowering main crops in 2018-2019. Key
crop-pollinating species were identified as those species which made up 5%
or more of the individuals visiting the flowers of each crop. 
Out of the 359 pollinator species occurring in agroecosystems, 156 were
crop-associated bee species and only 26 bee species were classified as key
crop-pollinating species. The bee communities observed in the crops were
predominantly composed of widespread, solitary, pollen generalist,
ground-nesting bees with an extended flight season. Our findings provide
essential baseline data on crop pollinators which can contribute to the
enhancement of the regional understanding of wild bee diversity and
functional traits associated with crop pollination. Moreover, this
information can facilitate the implementation of conservation strategies
to improve wild-bee habitats within agricultural landscapes.