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| Main Authors: | , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Marine environmental research
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40494092/ |
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| _version_ | 1868266193675091969 |
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| author | Resende, Julia Fanny de Jesus Bezerra, Jadna Nayara de Souza Borburema, Henrique D S Oliveira, Vinícius Peruzzi de |
| author_facet | Resende, Julia Fanny de Jesus Bezerra, Jadna Nayara de Souza Borburema, Henrique D S Oliveira, Vinícius Peruzzi de Resende, Julia Fanny de Jesus Bezerra, Jadna Nayara de Souza Borburema, Henrique D S Oliveira, Vinícius Peruzzi de |
| collection | PubMed - marine biology |
| contents | Future environmental scenarios favor the performance of Ulva lactuca - Implications for the intensification of green tides. Resende, Julia Fanny de Jesus Bezerra, Jadna Nayara de Souza Borburema, Henrique D S Oliveira, Vinícius Peruzzi de Ulva Eutrophication Climate Change Salinity Temperature Photosynthesis Seawater Seaweed Environmental Monitoring Edible Seaweeds Climate change has increased ocean temperature and salinity, and increasing nutrient inputs into the sea have intensified coastal eutrophication worldwide. These factors directly affect ephemeral marine macroalgae, whose excessive blooms raise significant ecological and economic concerns. Based on climate scenarios, this study analyzed the combined effects of temperature (23, 25, 26, and 28 °C), salinity (36 and 38), and nutrient availability on the growth, photosynthetic performance, and biochemical composition of the bloom-forming green macroalga Ulva lactuca. Thalli were cultured in fully crossed factorial experiments of warming and increased salinity and nutrients. Current conditions (23 and 25 °C, salinity of 36) and RCP8.5 future scenarios (26 and 28 °C, salinity of 38) were evaluated. Three nutrient levels were defined by adding von Stosch nutrient solution (VSES) to the seawater (control: 0 % VSES, natural eutrophication: 10 % VSES, and anthropogenic eutrophication: 50 % VSES). The highest macroalgal performance occurred under higher salinity and nutrient conditions at 25 °C. In contrast, the macroalgal growth reduced at 23 °C, salinity of 36, and lowest availability of nutrients. Under warming conditions (26 and 28 °C), U. lactuca showed thermal tolerance, stable growth rates, and high photosynthetic performance. Increasing nutrient availability enhanced photosynthetic pigments and N content of U. lactuca, as well as decreased the C:N ratio. These findings suggest that U. lactuca has a high potential to thrive under future environmental scenarios, potentially intensifying green tides and their negative ecological and economic impacts. |
| format | Artículo científico |
| id | pubmed_40494092 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Marine environmental research |
| record_format | pubmed |
| spellingShingle | Future environmental scenarios favor the performance of Ulva lactuca - Implications for the intensification of green tides. Resende, Julia Fanny de Jesus Bezerra, Jadna Nayara de Souza Borburema, Henrique D S Oliveira, Vinícius Peruzzi de Ulva Eutrophication Climate Change Salinity Temperature Photosynthesis Seawater Seaweed Environmental Monitoring Edible Seaweeds Future environmental scenarios favor the performance of Ulva lactuca - Implications for the intensification of green tides. Resende, Julia Fanny de Jesus Bezerra, Jadna Nayara de Souza Borburema, Henrique D S Oliveira, Vinícius Peruzzi de Ulva Eutrophication Climate Change Salinity Temperature Photosynthesis Seawater Seaweed Environmental Monitoring Edible Seaweeds Climate change has increased ocean temperature and salinity, and increasing nutrient inputs into the sea have intensified coastal eutrophication worldwide. These factors directly affect ephemeral marine macroalgae, whose excessive blooms raise significant ecological and economic concerns. Based on climate scenarios, this study analyzed the combined effects of temperature (23, 25, 26, and 28 °C), salinity (36 and 38), and nutrient availability on the growth, photosynthetic performance, and biochemical composition of the bloom-forming green macroalga Ulva lactuca. Thalli were cultured in fully crossed factorial experiments of warming and increased salinity and nutrients. Current conditions (23 and 25 °C, salinity of 36) and RCP8.5 future scenarios (26 and 28 °C, salinity of 38) were evaluated. Three nutrient levels were defined by adding von Stosch nutrient solution (VSES) to the seawater (control: 0 % VSES, natural eutrophication: 10 % VSES, and anthropogenic eutrophication: 50 % VSES). The highest macroalgal performance occurred under higher salinity and nutrient conditions at 25 °C. In contrast, the macroalgal growth reduced at 23 °C, salinity of 36, and lowest availability of nutrients. Under warming conditions (26 and 28 °C), U. lactuca showed thermal tolerance, stable growth rates, and high photosynthetic performance. Increasing nutrient availability enhanced photosynthetic pigments and N content of U. lactuca, as well as decreased the C:N ratio. These findings suggest that U. lactuca has a high potential to thrive under future environmental scenarios, potentially intensifying green tides and their negative ecological and economic impacts. |
| title | Future environmental scenarios favor the performance of Ulva lactuca - Implications for the intensification of green tides. |
| topic | Ulva Eutrophication Climate Change Salinity Temperature Photosynthesis Seawater Seaweed Environmental Monitoring Edible Seaweeds |
| url | https://pubmed.ncbi.nlm.nih.gov/40494092/ |