Seawater carbonate chemistry and growth rate of a bloom forming macroalga
Introduction: The coastal macroalgal genus, Ulva, is found worldwide and is considered a nuisance algal genus due to its propensity for forming vast blooms. The response of Ulva to ocean acidification (OA) is of concern, particularly with nutrient enrichment, as these combined drivers may enhance al...
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PANGAEA
2023
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.956864 https://doi.org/10.1594/PANGAEA.956864 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.956864 |
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openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total standard error Ammonium Ammonium uptake rate Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates in extract per fresh mass Carbon inorganic dissolved per tissue dry mass Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Chlorophyta Coast and continental shelf EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Laboratory experiment |
spellingShingle |
Alkalinity total standard error Ammonium Ammonium uptake rate Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates in extract per fresh mass Carbon inorganic dissolved per tissue dry mass Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Chlorophyta Coast and continental shelf EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Laboratory experiment Reidenbach, Leah B Dudgeon, Steve R Kübler, Janet E Seawater carbonate chemistry and growth rate of a bloom forming macroalga |
topic_facet |
Alkalinity total standard error Ammonium Ammonium uptake rate Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates in extract per fresh mass Carbon inorganic dissolved per tissue dry mass Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Chlorophyta Coast and continental shelf EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Laboratory experiment |
description |
Introduction: The coastal macroalgal genus, Ulva, is found worldwide and is considered a nuisance algal genus due to its propensity for forming vast blooms. The response of Ulva to ocean acidification (OA) is of concern, particularly with nutrient enrichment, as these combined drivers may enhance algal blooms because of increased availability of dissolved inorganic resources. Methods: We determined how a suite of physiological parameters were affected by OA and ammonium (NH4+) enrichment in 22-day laboratory experiments to gain a mechanistic understanding of growth, nutrient assimilation, and photosynthetic processes. We predicted how physiological parameters change across a range of pCO2 and NH4+ scenarios to ascertain bloom potential under future climate change regimes. Results: During the first five days of growth, there was a positive synergy between pCO2 and NH4+ enrichment, which could accelerate initiation of an Ulva bloom. After day 5, growth rates declined overall and there was no effect of pCO2, NH4+, nor their interaction. pCO2 and NH4+ acted synergistically to increase NO3– uptake rates, which may have contributed to increased growth in the first five days. Under the saturating photosynthetically active radiation (PAR) used in this experiment (500 μmol photon/m**2/s), maximum photosynthetic rates were negatively affected by increased pCO2, which could be due to increased sensitivity to light when high CO2 reduces energy requirements for inorganic carbon acquisition. Activity of CCMs decreased under high pCO2 and high NH4+ conditions indicating that nutrients play a role in alleviating photodamage and regulating CCMs under high-light intensities. Discussion: This study demonstrates that OA could play a role in initiating or enhancing Ulva blooms in a eutrophic environment and highlights the need for understanding the potential interactions among light, OA, and nutrient enrichment in regulating photosynthetic processes. |
format |
Dataset |
author |
Reidenbach, Leah B Dudgeon, Steve R Kübler, Janet E |
author_facet |
Reidenbach, Leah B Dudgeon, Steve R Kübler, Janet E |
author_sort |
Reidenbach, Leah B |
title |
Seawater carbonate chemistry and growth rate of a bloom forming macroalga |
title_short |
Seawater carbonate chemistry and growth rate of a bloom forming macroalga |
title_full |
Seawater carbonate chemistry and growth rate of a bloom forming macroalga |
title_fullStr |
Seawater carbonate chemistry and growth rate of a bloom forming macroalga |
title_full_unstemmed |
Seawater carbonate chemistry and growth rate of a bloom forming macroalga |
title_sort |
seawater carbonate chemistry and growth rate of a bloom forming macroalga |
publisher |
PANGAEA |
publishDate |
2023 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.956864 https://doi.org/10.1594/PANGAEA.956864 |
op_coverage |
LATITUDE: 34.041300 * LONGITUDE: -118.567500 |
long_lat |
ENVELOPE(-118.567500,-118.567500,34.041300,34.041300) |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Reidenbach, Leah B; Dudgeon, Steve R; Kübler, Janet E (2022): Ocean acidification and ammonium enrichment interact to stimulate a short-term spike in growth rate of a bloom forming macroalga. Frontiers in Marine Science, 9, 980657, https://doi.org/10.3389/fmars.2022.980657 Reidenbach, Leah B; Kübler, Janet E; Dudgeon, Steve R (2021): Results from a study of physiological responses of Ulva lactuca to ocean acidification and nutrient enrichment [dataset]. Biological and Chemical Oceanography Data Management Office (BCO-DMO), https://doi.org/10.26008/1912/bco-dmo.861111.1 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2022): seacarb: seawater carbonate chemistry with R. R package version 3.3.1. https://cran.r-project.org/web/packages/seacarb/index.html https://doi.pangaea.de/10.1594/PANGAEA.956864 https://doi.org/10.1594/PANGAEA.956864 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.95686410.3389/fmars.2022.98065710.26008/1912/bco-dmo.861111.1 |
_version_ |
1810469830957989888 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.956864 2024-09-15T18:28:28+00:00 Seawater carbonate chemistry and growth rate of a bloom forming macroalga Reidenbach, Leah B Dudgeon, Steve R Kübler, Janet E LATITUDE: 34.041300 * LONGITUDE: -118.567500 2023 text/tab-separated-values, 1175 data points https://doi.pangaea.de/10.1594/PANGAEA.956864 https://doi.org/10.1594/PANGAEA.956864 en eng PANGAEA Reidenbach, Leah B; Dudgeon, Steve R; Kübler, Janet E (2022): Ocean acidification and ammonium enrichment interact to stimulate a short-term spike in growth rate of a bloom forming macroalga. Frontiers in Marine Science, 9, 980657, https://doi.org/10.3389/fmars.2022.980657 Reidenbach, Leah B; Kübler, Janet E; Dudgeon, Steve R (2021): Results from a study of physiological responses of Ulva lactuca to ocean acidification and nutrient enrichment [dataset]. Biological and Chemical Oceanography Data Management Office (BCO-DMO), https://doi.org/10.26008/1912/bco-dmo.861111.1 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2022): seacarb: seawater carbonate chemistry with R. R package version 3.3.1. https://cran.r-project.org/web/packages/seacarb/index.html https://doi.pangaea.de/10.1594/PANGAEA.956864 https://doi.org/10.1594/PANGAEA.956864 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Alkalinity total standard error Ammonium Ammonium uptake rate Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates in extract per fresh mass Carbon inorganic dissolved per tissue dry mass Carbon/Nitrogen ratio Carbonate ion Carbonate system computation flag Carbon dioxide Chlorophyll a Chlorophyta Coast and continental shelf EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Growth/Morphology Growth rate Identification Laboratory experiment dataset 2023 ftpangaea https://doi.org/10.1594/PANGAEA.95686410.3389/fmars.2022.98065710.26008/1912/bco-dmo.861111.1 2024-07-24T02:31:35Z Introduction: The coastal macroalgal genus, Ulva, is found worldwide and is considered a nuisance algal genus due to its propensity for forming vast blooms. The response of Ulva to ocean acidification (OA) is of concern, particularly with nutrient enrichment, as these combined drivers may enhance algal blooms because of increased availability of dissolved inorganic resources. Methods: We determined how a suite of physiological parameters were affected by OA and ammonium (NH4+) enrichment in 22-day laboratory experiments to gain a mechanistic understanding of growth, nutrient assimilation, and photosynthetic processes. We predicted how physiological parameters change across a range of pCO2 and NH4+ scenarios to ascertain bloom potential under future climate change regimes. Results: During the first five days of growth, there was a positive synergy between pCO2 and NH4+ enrichment, which could accelerate initiation of an Ulva bloom. After day 5, growth rates declined overall and there was no effect of pCO2, NH4+, nor their interaction. pCO2 and NH4+ acted synergistically to increase NO3– uptake rates, which may have contributed to increased growth in the first five days. Under the saturating photosynthetically active radiation (PAR) used in this experiment (500 μmol photon/m**2/s), maximum photosynthetic rates were negatively affected by increased pCO2, which could be due to increased sensitivity to light when high CO2 reduces energy requirements for inorganic carbon acquisition. Activity of CCMs decreased under high pCO2 and high NH4+ conditions indicating that nutrients play a role in alleviating photodamage and regulating CCMs under high-light intensities. Discussion: This study demonstrates that OA could play a role in initiating or enhancing Ulva blooms in a eutrophic environment and highlights the need for understanding the potential interactions among light, OA, and nutrient enrichment in regulating photosynthetic processes. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-118.567500,-118.567500,34.041300,34.041300) |