Environmental variability in northern Tanzania from AD 1000 to 1800, as inferred from diatoms and pollen in Lake Duluti

► A multiproxy record of environmental change in northern Tanzania ► Reconstruction of hydrological and vegetation changes during the last millennium ► Our data indicate generally dry conditions from c. AD 1040 to 1640. ► From c. AD 1640 to 1790 there is a continuous increase in wetness.