On the bioremediation efficiency of Mastocarpus stellatus (Stackhouse) Guiry, in an integrated multi-trophic aquaculture system

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• 作者：Bernardo Domingues ; Maria H. Abreu ; Isabel Sousa-Pinto
• 关键词：IMTA ; Growth rates ; Yields ; Mastocarpus ; Rhodophyta ; nutrient uptake ; Stocking density
• 刊名：Journal of Applied Phycology
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：27
• 期：3
• 页码：1289-1295
• 全文大小：311 KB
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  Mata L, Schue
• 作者单位：Bernardo Domingues (1)
  Maria H. Abreu (1) (2)
  Isabel Sousa-Pinto (1)
  
  1. ALGAplus, Produ??o e Comercializa??o de Algas e seus derivados Lda (ALGA+), Rua António Castilho, 3850-405, Angeja, Portugal
  2. CIIMAR/CIMAR, and Department of Biology, Faculty of Sciences University of Porto, Rua dos Bragas, 289, 4050-123, Porto, Portugal
  
• 刊物主题：Plant Sciences; Freshwater & Marine Ecology; Plant Physiology; Ecology;
• 出版者：Springer Netherlands
• ISSN：1573-5176

文摘

The potential of rearing the red seaweed Mastocarpus stellatus (Stackhouse) Guiry, a carrageenophyte, as a biofilter in a pilot-scale, integrated multi-trophic aquaculture (IMTA) system was investigated. From April to June, M. stellatus, collected from a population in the north of Portugal was cultivated in 1200-L tanks in two consecutive, 4-week experiments with nutrient-enriched waters derived from fish tanks. The stocking density of 3?kg?m? provided the best yields, ranging from 29.6?g dw m??day? in April–May to 38.9?g dw m??day? in June. In the April–May period, a linear increase in the yields was found at higher densities. M. stellatus growth rates during April–May period did not diverge significantly between stocking densities and reached a mean relative growth rate of 3.09?±-.90?%?day? in April–May and 4.02?±-.43?%?day? in June at 3?kg?m?. In June, the increase in stocking density negatively affected the growth rates (3-lt;--lt;-?kg?m?). M. stellatus used ammonium (TAN) as the main N source and the nutrient uptake efficiency was found to be similar between stocking densities, but highest in June. The seaweeds removed an average of 66.29?±-.57?μmol TAN L- in May and 84.49?±-.00?μmol TAN L- in June, which corresponded to the mitigation of 43.19?±-.61 and 49.00?±-.59?% of NH₃ from the system, respectively. This study demonstrated the potential to effectively cultivate M. stellatus in an IMTA system.