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Title: | Ulva rigida (Ulvales, Chlorophyta) tank culture as biofilters for dissolved inorganic nitrogen from fishpond effluents | Authors: | Jiménez del Río, Miguel Ramazanov, Zayin García-Reina, Guillermo |
UNESCO Clasification: | 241707 Algología (ficología) | Keywords: | Biofilter Nitrogen Sparus Ulvia |
Issue Date: | 1996 | Publisher: | Springer | Journal: | Hydrobiologia | Conference: | 15th International Seaweed Symposium | Abstract: | Ulva rigida was cultivated in 7501 tanks at different densities with direct and continuous inflow (at 2, 4, 8 and 12 volumes d(-1)) of the effluents from a commercial marine fishpond (40 metric tonnes, Tm, of Sparus aurata, water exchange rate of 16 m(3) Tm-1) in order to assess the maximum and optimum dissolved inorganic nitrogen (DIN) uptake rate and the annual stability of the 'Ulva tank biofiltering system'. Maximum yields (40 g DW m(-2) d(-1)) were obtained at a density of 2.5 g FW l(-1) and at a DIN inflow rate of 1.7 g DIN m(-2) d(-1). Maximum DIN uptake rates were obtained during summer (2.2 g DIN m(-2) d(-1)), and minimum in winter (1.1 g DIN m(-2) d(-1)) with a yearly average DIN uptake rate of 1.77 g DIN m(-2) d(-1). At yearly average DIN removal efficiency (2.0 g DIN m(-2) d(-1), if winter period is excluded), 153 m(2) of Ulva tank surface would be needed to recover 100% of the DIN produced by 1 Tm of fish. | URI: | http://hdl.handle.net/10553/73027 | ISBN: | 9401072426 | ISSN: | 0018-8158 | DOI: | 10.1007/BF00047787 | Source: | Hydrobiologia [ISSN 0018-8158], v. 326, p. 61-66, (Julio 1996) |
Appears in Collections: | Actas de congresos |
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