Organochlorine pesticides in mangrove ecosystems in Dar es Salaam, Tanzania

Mangroves are found all along the coastal area of Dar es Salaam in Tanzania. Several mangrove sites are in connection with river mouths, and are heavily affected by anthropogenic pollution. The Kzinga and Mzinga rivers and the Msimbazi river runs through the city of Dar es Salaam, receiving effluents from industry, agriculture, sewage and waste, ending up in estuarine mangrove forests. Mangroves function as pollution “traps” by filtering pollution from rivers and tidal water, but they are also sensitive ecosystems that may be negatively affected by exposure to pollutants. Various types of organic pesticides, including DDT, were imported to Tanzania in the 70s as donations for crop protection and malaria control, and are still residing as stockpiles in the country. As present use of pesticide is characterized with little to no regulation and often low public awareness, both primary (present use) and secondary (from stockpiles) sources of pesticides represent potential threats to the environment. Thus, occurrence of various organic pesticides on coastal mangrove ecosystems is particularly interesting.



The main goal of this master project is to assess accumulation and biomagnification of organochlorine pesticides in sediment and biota from mangrove sites along the coast of Dar es Salaam, Tanzania. The master project will be a part of a large interdisciplinary research group, AnthroTox. AnthroTox is a part of the Life Science initiative and aims at combining natural and social sciences to understand and manage global anthropogenic contaminants.

The master student will take part in a field campaign to Tanzania in winter 2019, together with AnthroTox PhD students and Tanzanian collaborators. Samples of sediment and biota will be collected from the mangrove sites. Analyses of organic contaminants in biota will be conducted by the student at Norwegian University of Life Science (NMBU) at Adamstuen, and sediment at Norwegian Institute of Air Research (NILU) at Kjeller.

For more information, please contact:

Main supervisor - Katrine Borgå

Co-supervisor - Ane Haarr,

Co-supervisor - Jan Ludvig Lyche,


Publisert 3. sep. 2018 12:45 - Sist endret 3. sep. 2018 12:45


Omfang (studiepoeng)