Seasonal and inter-annual variability in the heatwave tolerance of the kelp Saccharina latissima
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2022
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| _version_ | 1867168218435551232 |
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| author | Niedzwiedz, Sarina Diehl, Nora Fischer, Philipp Bischof, Kai |
| author_facet | Niedzwiedz, Sarina Diehl, Nora Fischer, Philipp Bischof, Kai |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Temperature is a major driver for the geographical distribution of organisms, such as the foundation kelp species Saccharina latissima. Globally rising sea surface temperatures and intensification of marine heatwaves have already led to local loss of kelp populations. We investigated temporal variations in the thermal susceptibility of S. latissima. Therefore, we assessed the stress responses of field sporophytes sampled from Helgoland (German Bight) to an experimental heat wave scenario in June 2018, August 2018, and August 2019. The experiment in June 2018 was conducted by Diehl et al. (2021a) and the respective dataset (Diehl et al. 2021b, https://doi.org/10.1594/PANGAEA.931637) was re-evaluated for this study. Treatment temperatures (18, 20, 22, 24 °C) were based on 18 °C summer mean sea surface temperature on Helgoland as control, and Δ+2, Δ+4, Δ+6 °C as temperature-amplitude treatments, mimicking marine heatwaves. After a three-days wound healing phase, seven days of temperature acclimation (day 0-7) and seven days of temperature treatment (day 8-14) followed. The survival, growth and maximum photosynthetic quantum yield (Fv/Fm; June 2018/August 2018: ImagingPAM, Walz Imaging PAM Maxi Version M-series; August 2019: Portable Chlorophyll Fluorometer PAM-2100, Heinz Walz GmbH, Effeltrich, Germany) were measured on day 0 and day 14. To highlight changes as response to the experimental heat wave, physiological parameters were shown as percentage of the initial values. Absolute concentrations of pigments were analyzed using a HPLC. Afterwards, accessory pigment (Acc) and xanthophyll cycle pigment (VAZ) concentration, as well as the de-epoxidation state of the xanthophyll cycle (DPS) and ratios were calculated. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_949740 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seasonal and inter-annual variability in the heatwave tolerance of the kelp Saccharina latissima Niedzwiedz, Sarina Diehl, Nora Fischer, Philipp Bischof, Kai Acclimation; after Colombo-Pallotta et al. (2006); Antheraxanthin, per dry mass; Area, algal disc, relative; Calculated; Chlorophyll a, per dry mass; Chlorophyll c, per dry mass; Climate change; DATE/TIME; De-expoxidation state of xanthophyll cycle; DIVER; Event label; Experiment day; Family; Fucoxanthin, per dry mass; Fv/Fm; Genus, unique identification (Semantic URI); Genus, unique identification (URI); growth; Helgoland_Slatissima_2018a; Helgoland_Slatissima_2018b; Helgoland_Slatissima_2019; Helgoland, North Sea; High Performance Liquid Chromatography (HPLC); Laboratory experiment; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, relative; Measured using software ImageJ; Pigments; Pigments, accessory, per dry mass; Pigments, accessory/Chlorophyll a ratio; Pigments, violaxanthin-xanthophyll-cycle/Chlorophyll a ratio; Pulse amplitude modulation (PAM) fluorometry; Replicate; Saccharina latissima; Sampling by diver; Size, algal disc; Species; Survival; Temperature, water; Temperature tolerance; Type of study; Violaxanthin, per dry mass; Violaxanthin + Antheraxanthin + Zeaxanthin, per dry mass; Visual observation; Zeaxanthin, per dry mass Temperature is a major driver for the geographical distribution of organisms, such as the foundation kelp species Saccharina latissima. Globally rising sea surface temperatures and intensification of marine heatwaves have already led to local loss of kelp populations. We investigated temporal variations in the thermal susceptibility of S. latissima. Therefore, we assessed the stress responses of field sporophytes sampled from Helgoland (German Bight) to an experimental heat wave scenario in June 2018, August 2018, and August 2019. The experiment in June 2018 was conducted by Diehl et al. (2021a) and the respective dataset (Diehl et al. 2021b, https://doi.org/10.1594/PANGAEA.931637) was re-evaluated for this study. Treatment temperatures (18, 20, 22, 24 °C) were based on 18 °C summer mean sea surface temperature on Helgoland as control, and Δ+2, Δ+4, Δ+6 °C as temperature-amplitude treatments, mimicking marine heatwaves. After a three-days wound healing phase, seven days of temperature acclimation (day 0-7) and seven days of temperature treatment (day 8-14) followed. The survival, growth and maximum photosynthetic quantum yield (Fv/Fm; June 2018/August 2018: ImagingPAM, Walz Imaging PAM Maxi Version M-series; August 2019: Portable Chlorophyll Fluorometer PAM-2100, Heinz Walz GmbH, Effeltrich, Germany) were measured on day 0 and day 14. To highlight changes as response to the experimental heat wave, physiological parameters were shown as percentage of the initial values. Absolute concentrations of pigments were analyzed using a HPLC. Afterwards, accessory pigment (Acc) and xanthophyll cycle pigment (VAZ) concentration, as well as the de-epoxidation state of the xanthophyll cycle (DPS) and ratios were calculated. |
| title | Seasonal and inter-annual variability in the heatwave tolerance of the kelp Saccharina latissima |
| topic | Acclimation; after Colombo-Pallotta et al. (2006); Antheraxanthin, per dry mass; Area, algal disc, relative; Calculated; Chlorophyll a, per dry mass; Chlorophyll c, per dry mass; Climate change; DATE/TIME; De-expoxidation state of xanthophyll cycle; DIVER; Event label; Experiment day; Family; Fucoxanthin, per dry mass; Fv/Fm; Genus, unique identification (Semantic URI); Genus, unique identification (URI); growth; Helgoland_Slatissima_2018a; Helgoland_Slatissima_2018b; Helgoland_Slatissima_2019; Helgoland, North Sea; High Performance Liquid Chromatography (HPLC); Laboratory experiment; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, relative; Measured using software ImageJ; Pigments; Pigments, accessory, per dry mass; Pigments, accessory/Chlorophyll a ratio; Pigments, violaxanthin-xanthophyll-cycle/Chlorophyll a ratio; Pulse amplitude modulation (PAM) fluorometry; Replicate; Saccharina latissima; Sampling by diver; Size, algal disc; Species; Survival; Temperature, water; Temperature tolerance; Type of study; Violaxanthin, per dry mass; Violaxanthin + Antheraxanthin + Zeaxanthin, per dry mass; Visual observation; Zeaxanthin, per dry mass |
| url | https://doi.org/10.1594/PANGAEA.949740 |