Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics
ABSTRACTMacroalgal biomass production models that capture nutrient dynamics, temperature, light and salinity are important for the design and operation of large-scale farms. The goal of this study is to understand how the nitrogen fertilizing regime, relating to dose (µM N week−1), amplitude (µM N)...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Applied Phycology |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/26388081.2023.2224423 |
| _version_ | 1827309033552347136 |
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| author | Meiron Zollmann Alexander Liberzon Alexander Golberg |
| author_facet | Meiron Zollmann Alexander Liberzon Alexander Golberg |
| author_sort | Meiron Zollmann |
| collection | DOAJ |
| description | ABSTRACTMacroalgal biomass production models that capture nutrient dynamics, temperature, light and salinity are important for the design and operation of large-scale farms. The goal of this study is to understand how the nitrogen fertilizing regime, relating to dose (µM N week−1), amplitude (µM N) and duration (hours) of fertilization, affects the dynamics of nitrogen content and biomass production of Ulva sp. We hypothesize that the nitrogen fertilizing regime controls the Ulva Nitrogen Use Efficiency (NUE), defined here as the fraction of fertilizer nitrogen that is utilized and allocated to yield N, and, accordingly, also nitrogen assimilation in the biomass and the growth rate. We test this hypothesis by measuring internal nitrogen and biomass weight and by calculating NUE under various fertilization regimes in controlled photobioreactors. Based on these experimental data, we developed a biomass productivity model that predicts nitrogen and biomass dynamics temporally over three weeks of cultivation. This study highlights efficient fertilizing regimes and enables the development of a comprehensive understanding of the dynamic relationship between external N, internal N and biomass production of Ulva sp. under varying external N levels, which is important for real-world agricultural applications. This study provides a better understanding of the external N-internal N-biomass triangle leading to an improved dynamic cultivation model, enabling better control of nutrient application and biomass production in macroalgal farming for a sustainable marine bioeconomy. |
| first_indexed | 2024-03-08T18:56:03Z |
| format | Article |
| id | doaj.art-ab7ba8ad6ee4463ea17dce281ed746bb |
| institution | Directory Open Access Journal |
| issn | 2638-8081 |
| language | English |
| last_indexed | 2024-04-24T19:22:10Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Applied Phycology |
| spelling | doaj.art-ab7ba8ad6ee4463ea17dce281ed746bb2024-03-25T17:25:36ZengTaylor & Francis GroupApplied Phycology2638-80812023-12-014112114010.1080/26388081.2023.2224423Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamicsMeiron Zollmann0Alexander Liberzon1Alexander Golberg2Porter School of Environmental and Earth Sciences, Tel Aviv University, Tel Aviv, IsraelSchool of Mechanical Engineering, Tel Aviv University, Tel Aviv, IsraelPorter School of Environmental and Earth Sciences, Tel Aviv University, Tel Aviv, IsraelABSTRACTMacroalgal biomass production models that capture nutrient dynamics, temperature, light and salinity are important for the design and operation of large-scale farms. The goal of this study is to understand how the nitrogen fertilizing regime, relating to dose (µM N week−1), amplitude (µM N) and duration (hours) of fertilization, affects the dynamics of nitrogen content and biomass production of Ulva sp. We hypothesize that the nitrogen fertilizing regime controls the Ulva Nitrogen Use Efficiency (NUE), defined here as the fraction of fertilizer nitrogen that is utilized and allocated to yield N, and, accordingly, also nitrogen assimilation in the biomass and the growth rate. We test this hypothesis by measuring internal nitrogen and biomass weight and by calculating NUE under various fertilization regimes in controlled photobioreactors. Based on these experimental data, we developed a biomass productivity model that predicts nitrogen and biomass dynamics temporally over three weeks of cultivation. This study highlights efficient fertilizing regimes and enables the development of a comprehensive understanding of the dynamic relationship between external N, internal N and biomass production of Ulva sp. under varying external N levels, which is important for real-world agricultural applications. This study provides a better understanding of the external N-internal N-biomass triangle leading to an improved dynamic cultivation model, enabling better control of nutrient application and biomass production in macroalgal farming for a sustainable marine bioeconomy.https://www.tandfonline.com/doi/10.1080/26388081.2023.2224423Biorefinery feedstockmacroalgae-based bioeconomyNitrogen Use Efficiencyprecision agricultureproduction modelUlva |
| spellingShingle | Meiron Zollmann Alexander Liberzon Alexander Golberg Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics Applied Phycology Biorefinery feedstock macroalgae-based bioeconomy Nitrogen Use Efficiency precision agriculture production model Ulva |
| title | Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics |
| title_full | Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics |
| title_fullStr | Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics |
| title_full_unstemmed | Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics |
| title_short | Modeling of growth of the macroalga Ulva sp. in a controlled photobioreactor based on nitrogen accumulation dynamics |
| title_sort | modeling of growth of the macroalga ulva sp in a controlled photobioreactor based on nitrogen accumulation dynamics |
| topic | Biorefinery feedstock macroalgae-based bioeconomy Nitrogen Use Efficiency precision agriculture production model Ulva |
| url | https://www.tandfonline.com/doi/10.1080/26388081.2023.2224423 |
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