PAM fluorometry monitoring bleaching in the foraminifera Sorites orbiculus
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2026
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| _version_ | 1867168537710166016 |
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| author | Timme, Lukas Theodor Henschen, Helena Puerto Rueda, Diana N Manda, Sneha Parkinson, John Everett Wild, Christian Abramovich, Sigal Morard, Raphael Schmidt, Christiane |
| author_facet | Timme, Lukas Theodor Henschen, Helena Puerto Rueda, Diana N Manda, Sneha Parkinson, John Everett Wild, Christian Abramovich, Sigal Morard, Raphael Schmidt, Christiane |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Sorites orbiculus specimens were subjected to a bleaching treatment in a laboratory experiment. The photosystem II efficiency of the symbiotic algae was monitored using PAM fluorometry with 14 samples containing 8 replicates and 5 samples containing 2 replicates per control / treatment. The treatment involved exposure to 5 µmol L-1 DCMU continuously and 0.19 mmol L-1 menthol during 6-hour incubation periods per day for 5 days per week over 27 days. Specimens were maintained in 120 ml of artificial seawater, with full water exchanges conducted twice daily, five days per week. In the final three days, specimens were incubated in the dark with only DCMU present. During the 18 h incubation periods, the weekends and the last three days, a Nannochloropsis food mixture was added. Control groups underwent identical conditions without the addition of bleaching agents. Environmental parameters were maintained at 26°C temperature, 37.5‰ salinity, and an illumination of 48 µmol photons cm-2 s-1 under a 12:12 h light-dark cycle. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_984041 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | PAM fluorometry monitoring bleaching in the foraminifera Sorites orbiculus Timme, Lukas Theodor Henschen, Helena Puerto Rueda, Diana N Manda, Sneha Parkinson, John Everett Wild, Christian Abramovich, Sigal Morard, Raphael Schmidt, Christiane DATE/TIME; Effective quantum yield of photosystem II; Experimental treatment; Fluorescence; Gulf of Aqaba; Maximum quantum yield of photosystem II; menthol-DCMU bleaching; Method comment; PAM fluorometry; S_orbiculus_2023; Sample ID; Sampling by snorkeling; SNORKELING; Type of study Sorites orbiculus specimens were subjected to a bleaching treatment in a laboratory experiment. The photosystem II efficiency of the symbiotic algae was monitored using PAM fluorometry with 14 samples containing 8 replicates and 5 samples containing 2 replicates per control / treatment. The treatment involved exposure to 5 µmol L-1 DCMU continuously and 0.19 mmol L-1 menthol during 6-hour incubation periods per day for 5 days per week over 27 days. Specimens were maintained in 120 ml of artificial seawater, with full water exchanges conducted twice daily, five days per week. In the final three days, specimens were incubated in the dark with only DCMU present. During the 18 h incubation periods, the weekends and the last three days, a Nannochloropsis food mixture was added. Control groups underwent identical conditions without the addition of bleaching agents. Environmental parameters were maintained at 26°C temperature, 37.5‰ salinity, and an illumination of 48 µmol photons cm-2 s-1 under a 12:12 h light-dark cycle. |
| title | PAM fluorometry monitoring bleaching in the foraminifera Sorites orbiculus |
| topic | DATE/TIME; Effective quantum yield of photosystem II; Experimental treatment; Fluorescence; Gulf of Aqaba; Maximum quantum yield of photosystem II; menthol-DCMU bleaching; Method comment; PAM fluorometry; S_orbiculus_2023; Sample ID; Sampling by snorkeling; SNORKELING; Type of study |
| url | https://doi.org/10.1594/PANGAEA.984041 |