From Limnology to Fisheries: Lake Tanganyika and Other Large Lakes 1999
DOI: 10.1007/978-94-017-1622-2_15
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Trophic structure of Lake Tanganyika: carbon flows in the pelagic food web

Abstract: 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 14 C and simulated in situ results, using on-board incubator measurements and knowledge of the vertical distributions of chlorophyll and irradiance. Bacterioplankton production was measured on two cruises with the leucine incorporation method. Zooplankton production was calculated from seasonal population samples, … Show more

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Cited by 40 publications
(82 citation statements)
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“…By combining published data on seston stoichiometry (C : N : P , 168 : 19 : 1; Jarvinen et al 1999) and biomass-specific phytoplankton productivity (0.18-0.27 mmol C mg Chl a 21 h 21 ; Sarvala et al 1999) with our measurements of littoral phytoplankton biomass during this study (mean 5 0.98 mg Chl a L 21 ), we estimate average nutrient demand by littoral phytoplankton as 0.02-0.03 mmol N L 21 h 21 and 0.001-0.002 mmol P L 21 h 21 . Thus, phytoplankton production would consume an average of 29-44% of usual DIN concentrations and 3-5% of SRP per hour (Table 1).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…By combining published data on seston stoichiometry (C : N : P , 168 : 19 : 1; Jarvinen et al 1999) and biomass-specific phytoplankton productivity (0.18-0.27 mmol C mg Chl a 21 h 21 ; Sarvala et al 1999) with our measurements of littoral phytoplankton biomass during this study (mean 5 0.98 mg Chl a L 21 ), we estimate average nutrient demand by littoral phytoplankton as 0.02-0.03 mmol N L 21 h 21 and 0.001-0.002 mmol P L 21 h 21 . Thus, phytoplankton production would consume an average of 29-44% of usual DIN concentrations and 3-5% of SRP per hour (Table 1).…”
Section: Discussionmentioning
confidence: 99%
“…Its surface waters have low nutrient concentrations that are augmented by biological nitrogen fixation and upwelling of hypolimnetic nutrients (Hecky et al 1991), with only minor dependence on external loading (Langenberg et al 2003a). Despite the scarcity of nutrients, pelagic phytoplankton in Lake Tanganyika are productive in the upper 50 m of the water column (0.5-2.8 g carbon [C] m 22 d 21 ; Hecky and Fee 1981;Sarvala et al 1999). Phytoplankton production is closely tied to nutrient upwelling on both seasonal (Hecky and Fee 1981;Hecky and Kling 1981;Langenberg et al 2003b) and multiyear time scales (O'Reilly et al 2003;Verburg et al 2003).…”
mentioning
confidence: 99%
“…Examples of this approach can be found in Lewis (1974) in Lake Lanao (Philippines), in Talling (1965) for several East African lakes, in Hecky and Fee (1981), Sarvala et al (1999) and Stenuite et al (2007) for Lake Tanganyika, in Guildford et al (2007) for Lake Malawi and in Silsbe et al (2006) for Lake Victoria. Such studies derived photosynthetic parameters (P Bm , the maximum specific photosynthetic rate, and Ik or α, a measure of the photosynthetic efficiency) from in situ incubations.…”
Section: Introductionmentioning
confidence: 99%
“…While nutrient recycling in the upper euphotic layer takes place throughout the year, the supply of nutrients is often a limiting factor for algal growth (Edmond et al, 1993;Hecky et al, 1993;Järvinen et al, 1999). The nutrient loading is mainly internal nutrients from within the lake; riverine or atmospheric input of nutrients is considered negligible for Lake Tanganyika (Hecky and Fee, 1981;Sarvala et al, 1999;Langenberg et al, 2003a). Because of its great depth, Lake Tanganyika is like the ocean in that most of the nutrients in the system are in the deep water, and nutrient supply to the mixed layer, where photosynthesis can occur, is dependent on vertical mixing processes (Hecky and Fee, 1981;Hecky et al, 1991).…”
Section: Introductionmentioning
confidence: 99%