The impact of different nutrient sources in the of different Ulva strains

• Main Authors: Cardoso, Isabel, Meissner, Anneke, Sawicki, Anja, Bartsch, Inka, Valentin, Klaus, Steinhagen, Sophie, Buck, Bela Hieronymus, Hofmann, Laurie C
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Accession number; genetics; Algae cultivation; Antioxidant activity; Artificial seawater; AWI_Bremerhaven_FunctEcologyLab; Biological sample; Biomass; wet mass; BIOS; Bremerhaven; Germany; Concentration; DATE/TIME; Date/time end; Date/time start; DEPTH; water; Event label; Experiment duration; Industrietaugliche Verfahrensoptimierung zur Herstellung einer nachhaltigen Verpackungslösung aus Makroalgen für den Lebensmittel-Handel; Laboratory; Laboratory experiment; LATITUDE; Light intensity; LONGITUDE; Mak-Pak_Scale-Up; Mediterranean Sea; MedSea_Ulva_1986; MedSea_Ulva_1987; NEAtlantic_Ulva_2021; North East Atlantic; Number of measurements; Origin; Recirculating Aquaculture System; Replicate; Salinity; Sample code/label; Sampling date; Species; Treatment: light:dark cycle; Treatment: nutrients; Treatment: salinity; Treatment: temperature; Type of study; Ulva sp; Mak
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.956989; https://doi.org/10.1594/PANGAEA.956989

In the paper "Salinity as a tool for strain selection in recirculating land-based production of Ulva spp. from germlings to adults" (Cardoso et al. 2023) it was evaluated the impact of different nutrient sources on the relative growth rates (RELATIVE GROWTH RATE) of four different Ulva strains during their adult stage. Previously to this experiment, two experiments were performed to evaluate the of germlings and adults of the four Ulva strains. Because the aim of these experiments was to reproduce the conditions of a large-scale production and a small-scale nursery, the adult material was supplemented with a cheaper commercial fertilizer Blaukorn (COMPO SANA®, Germany) while the germlings (in the nursery set-up) were supplemented with half-strength Provasoli (PES; Provasoli 1968; modifications: HEPES-buffer instead of TRIS, double concentration of Na₂Glycerophosphate; iodine enrichment following Tatewaki, 1966). Therefore, this experiment was performed to guarantee that the use of different nutrient sources would not impact the results of the former experiments. Four strains were tested (U. lacinulata and U. linza from the NE-Atlantic and U. lacinulata and U. flexuosa from the Mediterranean). The NE- Atlantic strains were collected in the Óbidos Lagoon, Portugal in January 2021 and it was cultivated in laboratory conditions in the Alfred Wegener Institute (AWI), Bremerhaven, Germany from that moment on. The Mediterranean strains belong to an AWI collection and were isolated in 1986 and 1987 (U. flexuosa and U. lacinulata, respectively). The cultivation of the Mediterranean species with the purpose of using them for experiments started in June 2021. Fresh thalli from each species and population were placed into 1 L glass beakers and subjected to one of the two treatments: water enriched with commercial fertilizer Blaukorn or with half-strength Provasoli (n = 3). The experiment ran for 3 weeks. The fresh weight was measured once a week by collecting the seaweed and removing the excess water with absorbent paper ...