Hello my dear friend @lemouth, sorry to leave my answer late but present some problems with my computer. Getting into the issue, it is true that the biodiversity in our ecosystems has been reduced due to the environmental imbalance that we have spoken about. In agricultural ecosystems are funadamentales, you managed to observe that it helps the process of pollination among other benefits.
Thank you for your valuable contribution, have a great weekend, blessings for your family.
RE: Functional biodiversity: Bumblebee and its presence in agro-ecosystems