RT Journal Article T1 Short-term nutrient removal efficiency by Ulva pseudorotundata (Chlorophyta): potential use for Integrated Multi-Trophic Aquaculture (IMTA) A1 Massocato, Thais Fávero A1 Robles-Carnero, Victor A1 Vega, Julia A1 Bastos, Eduardo A1 Avilés-Benítez, Antonio A1 Bonomi-Barufi, José A1 Rubi Rörig, Leonardo A1 López-Figueroa, Félix K1 Nitrógeno K1 Fotosíntesis AB Short-term N-NH4+ and N-NO3− removal by Ulva pseudorotundata under different initial nutrient concentrations and biomass stocking densities were investigated, monitoring in parallel photosynthetic parameters obtained by Pulse-Amplitude-Modulation (PAM) fluorometry of chlorophyll-a and evaluating biomass characteristics (CHN, proteins, carbohydrates). The results showed that U. pseudorotundata cultivated under solar radiation in a land-based outdoor pilot scale system was efficient in removing N-NH4+ and N-NO3− even in concentrations as high as 500 μmol L–1 ensuring complete water remediation in a period of 24 h and in all experimental conditions tested, however differences were observed depending on the stocking density and type of N-source. reatments with N-NH4+ showed faster N removal than those with N-NO3−, whilst treatments with N-NO3− required more photosynthetic energy. Part of the ammonium removed in the respective treatmentsmay have been volatilized as a combined effect of the pH increase related to photosynthesis and aeration in the tanks. Theresults presented here establish the fundamental parameters for the use of U. pseudorotundata as a biofiltering organism foreffluents with high concentrations of N-NH4+ and N-NO3− PB Springer Nature YR 2022 FD 2022-12-17 LK https://hdl.handle.net/10630/45366 UL https://hdl.handle.net/10630/45366 LA eng NO T. Fávero Massocato, V. Robles‑Carnero, J. Vega, E. Bastos, A. Avilés, J. Bonomi-Barufi, L. Rubi Rörig y F. L. Figueroa (2023). ‘Short‑term nutrient removal efficiency and photosynthetic performance of Ulva pseudorotundata (Chlorophyta): potential use for Integrated Multi‑Trophic Aquaculture (IMTA)’. Journal of Applied Phycology. 35 (1): 233-250 NO FACCO- UMA18-FEDER JA-162 and NAZCA-PY20-00458 NO Santa Catarina State Foundation for Research and Innovation Support (FAPESC process no 03/2017, Brazil) NO Coordination for the Improvement of Higher Education Personnel (CAPES/PRINT process nos. 88887.470102/2019-00, Brazil) DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 4 mar 2026