His main research interests are in environmental dynamics in the tropics, and in particular the human and ecological dimensions of environmental change in central and eastern Africa. Having carried out his PhD in Uganda in the early 1980s, David now has more than 25 years of research experience in the region and in the tropics more widely. Much of this research has focused on wetlands.
Utafiti wake mkuu unahusu mazingira katika nchi zilizo na joto, na hasa kwa kiasi gani mabadiliko ya mazingira katika Afrika ya Kati na Mashariki yanahusu binadamu na ekolojia. Akiwa alifanya shahada ya udaktari wa falsafa nchini Uganda mwanzoni wa miaka ya 80, David sasa ana zaidi ya miaka 25 ya uzoefu wa kufanya utafiti katika sehemu hizi na zingine zenye joto.Utafiti mwingi umehusu sehemu zenye unyevunyevu.