Helena Öberg

A diatom record of recent environmental change in Lake Duluti, northern Tanzania

K. Holmgren, T. J. Andersen, J. Risberg, 2012, Journal of Paleolimnology.

The development of the ancient irrigation system at Engaruka, northern Tanzania: physical and societal factors

K. Holmgren, Maria Ryner, Helena Öberg, 2010 .

MORPHOLOGY, VALVE ULTRASTRUCTURE AND STRATIGRAPHICAL VARIABILITY OF DISCOSTELLA TAXA IN A TROPICAL CRATER LAKE, NORTHERN TANZANIA

J. Risberg, B. Stabell, Helena Öberg, 2009 .

Vegetation dynamics within the savanna biome in southern Mozambique during the late Holocene

A. Ekblom, J. Risberg, E. Norström, 2018 .

Climate Change in Southern and Eastern Africa During the Past Millennium and its Implications for Societal Development

K. Holmgren, Helena Öberg, 2006 .

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

K. Holmgren, A. Muzuka, T. J. Andersen, 2013 .