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Nitrogenous nutrient uptake by phytoplankton and ammonium regeneration by microbial assemblage in Lake Biwa

Takahashi, M.; Hama, T.; Matsunaga, K.; Handa, N.

Journal of Plankton Research 17.5

1995

ISSN/ISBN: 0142-7873
DOI: 10.1093/plankt/17.5.1027
Accession: 009100365
In situ rates of nitrate, ammonium and urea uptake by the phytoplankton assemblage, and the regeneration rate of ammonium by the microbial assemblage, in Lake Biwa were measured using the nitrogen 15 tracer method from 1985 to 1987. The rate of total nitrogen (sum of ammonium, nitrate and urea) uptake was in the range of 62-594 ng N l-1 h-1. The percentage contribution of ammonium uptake was 41-92%, that of urea 4-58% and that of nitrate lt 1-28% of total uptake.

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Related References

Takahashi, M.; Hama, T.; Matsunaga, K.; Handa, N. 1995: Nitrogenous nutrient uptake by photoplankton and ammonium regeneration by microbial assemblage in Lake Biwa Journal of Plankton Research 17(5): 1027-1037
Haga, H.; Nagata, T.; Sakamoto, M. 2001: Microbial nitrogen metabolism c Ammonium regeneration within the euphotic zone Significance of ammonium regeneration on phytoplankton nutrition Martens, K Biology of Inland Waters Lake Kizaki: Limnology and ecology of a Japanese lake 207-215
Fisher, T.R.; Doyle, R.D.; Peele, E.R. 1988: Size-fractionated uptake and regeneration of ammonium and phosphate in a tropical lake - Etude du fractionnement des particulés et de la regénération de l'ammonium et du phosphate dans un lac tropical - Grössenfraktinierte Aufnahme und Regeneration von Ammonium und Phosphat in einem tropischen See Congress in New Zealand (1987) 23/2(2): 637-641
Kanda, J.; Hattori, A. 1988: Ammonium uptake and synthesis of cellular nitrogenous macromolecules in phytoplankton Limnology and Oceanography 33(6 Part 2): 1568-1579
Frenette, J.J.; Vincent, W.F.; Legendre, L.; Nagata, T. 1996: Size-dependent changes in phytoplankton C and N uptake in the dynamic mixed layer of Lake Biwa Freshwater Biology 36(2): 221-236
Tezuka, Y. 1984: Seasonal variations of dominant phytoplankton, chlorophyll and nutrient levels in the pelagic regions of Lake Biwa Japanese Journal of Limnology 451: 26-37
Ibanez, MSR.; Nakanishi, M.; Tezuka, Y. 1984: The effect of nutrient enrichment on the natural phytoplankton community of Lake Biwa maintained in glass bottles Japanese Journal of Limnology 453: 231-239
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Tsugeki, N.K.; Urabe, J.; Hayami, Y.; Kuwae, M.; Nakanishi, M. 2010: Phytoplankton dynamics in Lake Biwa during the 20th century; complex responses to climate variation and changes in nutrient status Journal of Paleolimnology 44.1
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