O. V. Lindqvist

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The sources of carbon for the pelagic fish production in Lake Tanganyika, East Africa, were evaluated in a comprehensive multi-year study. Phytoplankton production was assessed from seasonal in situ 14C and simulated in situ results, using on-board incubator measurements and knowledge of the vertical distributions of chlorophyll and irradiance.(More)
Lake Tanganyika hosts one of the largest inland fisheries in Africa and is a significant source of food and livelihood to millions dwelling inside and outside of its basin. The lake and its environs support a wide array of subsistence and commercial activity as well as a remarkable assemblage of tropical flora and fauna, including highly diverse populations(More)
Medusae predominate the macrozooplankton in the northernmost part of Lake Tanganyika, while shrimps are more abundant towards the south. In the stomach contents of centropomidae Lates stappersii (one of the four nile perch species in the lake), there were more shrimps both in percentage and frequency in Mpulungu area in the south, than in Kigoma area in the(More)
The diel vertical migration and distribution of planktonic copepods were investigated at three localities in Lake Tanganyika. During the day, the surface zone was usually totally devoid of crustacean zooplankton. Even naupliar stages of Copepoda, were often absent in the surface zone in daytime, although they were numerous at night. There were clear(More)
125I uptake by the thyroid was most pronounced in the smelt (Osmerus eperlanus), perch (Perca fluviatilis), rainbow trout (Salmo gairdneri), roach (Rutilus rutilus) and bleak (Alburnus alburnus). Unlike other tissues, only the muscle in the species studied no relative accumulation of 125I as compared to the ambient water. The Crusian carp (Cyprinus(More)
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