Abstract
Blue-green algal communities formed an extensive cover on soils at five deepwater rice-growing locations in Bangladesh during the month before the arrival of floodwater. The principal taxa wereAnabaena, Cylindrospermum, Lyngbya, Microcoleus, Nostoc, Prophyrosiphon notarisii, Scytonema mirabile andTolypothrix byssoidea. One of two locations studied after the floodwaters had receded also had an extensive cover, mainlyScytonema mirabile. Nitrogenase activity assayed at mid-day was from one to three orders of magnitude higher per unit area of community than bare soil. Nostoc showed higher activity than Tolypothrix, whether expressed per unit area or biomass. Whole field estimates of N2 fixed by blue-green algal communities during the pre-flood period ranged from 1.0 to 10.2 kg N ha−1. Much of this is probably not recycled until floodwaters cover the fields. However N2 fixed after floodwaters have receded is probably recycled rapidly due to ploughing.
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References
Eisenreich S J, Bannerman R T and Armstrong D E 1975 A simplified phosphorus analysis technique. Environ. Lett. 9, 43–53.
Mague T H 1978 Nitrogen fixation. In Handbook of Phycological Methods. Physiological and Biochemical Methods. pp 363–378. Eds J A Hellebust and J S Craigie. Cambridge U P, Cambridge.
Marker A F H, Nusch E A, Rai H and Reimann B 1980 The measurement of photosynthetic pigments in freshwaters and standardization of methods: Conclusions and recommendations. Arch. Hydrobiol., Suppl. 14, 91–196.
Peterson R B and Burris R H 1976 Conversion of acetylene reduction rates to nitrogen fixation rates in natural populations of blue-green algae. Anal. Biochem. 73, 404–410.
Potts M and Whitton B A 1977 Nitrogen fixation by blue-green algal communities in the intertidal zone of the lagoon of Aldabra Atoll. Oecologia (Berlin) 27, 275–283.
Roger P A and Kulasooriya S A 1980 Blue-green Algae and Rice. International Rice Research Institute, Los Baños, Philippines, 112 pp.
Roger P A and Watanabe I 1986 3. Technologies for utilizing biological nitrogen fixation in wetland rice: Potentialities, current usage, and limiting factors. Fertil. Res. 9, 39–77.
Rother J A, Aziz A, Hye Karim N and Witton B A 1988 Ecology of deepwater rice-fields in Bangladesh. 4. Nitrogen fixation by blue-green algal communities. Hydrobiologia 169, 43–56.
Smart M M, Rada R G and Dormermeyer G N 1983 Determination of total nitrogen in sediments and plants using persulfate digestion: An evaluation and comparison with the Kjeldahl process. Wat. Res. 17, 1207–1211.
Whitton B A, Aziz A, Francis P, Rother J A, Simon J W and Tahmida Z N 1988a Ecology of deepwater rice-fields in Bangladesh. 1. Physical and chemical environment. Hydrobiologia 169, 3–22.
Whitton B A, Aziz A, Kawecka B and Rother J A 1988b Ecology of deepwater rice-fields in Bangladesh. 3. Associated algae and macrophytes. Hydrobiologia 169, 31–42.
Witty J F 1979 Acetylene reduction assay can overestimate nitrogen-fixation in soil. Soil Biol. Biochem. 11, 209–210.
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Rother, J.A., Whitton, B.A. Nitrogenase activity of blue-green algae on seasonally flooded soils in Bangladesh. Plant Soil 113, 47–52 (1989). https://doi.org/10.1007/BF02181920
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DOI: https://doi.org/10.1007/BF02181920