Michael UsherMICHAEL B. USHER is retired. For more than 40 years he has had a research interest in the soil biota, especially the Collembola (springtails), Isoptera (termites) and Mesostigmata (mostly predatory mites). He also has a strong interest in nature coservation, and is currently working on a number of aspects of the conservation of biodiversity. Read More Read Less