DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf
Seagrass meadows are one of the most productive ecosystems on the planet, but their photosynthesis rate may be limited by carbon dioxide but mitigated by exploiting the high concentration of bicarbonate in the ocean using different active processes. Seagrasses are declining worldwide at an accelerat...
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Online Access: | https://doi.org/10.3389/fpls.2022.936716.s001 https://figshare.com/articles/dataset/DataSheet_1_The_differential_ability_of_two_species_of_seagrass_to_use_carbon_dioxide_and_bicarbonate_and_their_modelled_response_to_rising_concentrations_of_inorganic_carbon_pdf/21420351 |
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ftfrontimediafig:oai:figshare.com:article/21420351 2024-09-15T18:28:26+00:00 DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf Stephen Christopher Maberly Andrew W. Stott Brigitte Gontero 2022-10-27T16:35:33Z https://doi.org/10.3389/fpls.2022.936716.s001 https://figshare.com/articles/dataset/DataSheet_1_The_differential_ability_of_two_species_of_seagrass_to_use_carbon_dioxide_and_bicarbonate_and_their_modelled_response_to_rising_concentrations_of_inorganic_carbon_pdf/21420351 unknown doi:10.3389/fpls.2022.936716.s001 https://figshare.com/articles/dataset/DataSheet_1_The_differential_ability_of_two_species_of_seagrass_to_use_carbon_dioxide_and_bicarbonate_and_their_modelled_response_to_rising_concentrations_of_inorganic_carbon_pdf/21420351 CC BY 4.0 Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified climate change CO2 concentrating mechanisms (CCMs) ocean acidification Posidonia oceanica rising CO2 seagrass Zostera marina Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fpls.2022.936716.s001 2024-08-19T06:19:51Z Seagrass meadows are one of the most productive ecosystems on the planet, but their photosynthesis rate may be limited by carbon dioxide but mitigated by exploiting the high concentration of bicarbonate in the ocean using different active processes. Seagrasses are declining worldwide at an accelerating rate because of numerous anthropogenic pressures. However, rising ocean concentrations of dissolved inorganic carbon, caused by increases in atmospheric carbon dioxide, may benefit seagrass photosynthesis. Here we compare the ability of two seagrass from the Mediterranean Sea, Posidonia oceanica (L.) Delile and Zostera marina L., to use carbon dioxide and bicarbonate at light saturation, and model how increasing concentrations of inorganic carbon affect their photosynthesis rate. pH-drift measurements confirmed that both species were able to use bicarbonate in addition to carbon dioxide, but that Z. marina was more effective than P. oceanica. Kinetic experiments showed that, compared to Z. marina, P. oceanica had a seven-fold higher affinity for carbon dioxide and a 1.6-fold higher affinity for bicarbonate. However, the maximal rate of bicarbonate uptake in Z. marina was 2.1-fold higher than in P. oceanica. In equilibrium with 410 ppm carbon dioxide in the atmosphere, the modelled rates of photosynthesis by Z. marina were slightly higher than P. oceanica, less carbon limited and depended on bicarbonate to a greater extent. This greater reliance by Z. marina is consistent with its less depleted 13 C content compared to P. oceanica. Modelled photosynthesis suggests that both species would depend on bicarbonate alone at an atmospheric carbon dioxide partial pressure of 280 ppm. P. oceanica was projected to benefit more than Z. marina with increasing atmospheric carbon dioxide partial pressures, and at the highest carbon dioxide scenario of 1135 ppm, would have higher rates of photosynthesis and be more saturated by inorganic carbon than Z. marina. In both species, the proportional reliance on bicarbonate declined ... Dataset Ocean acidification Frontiers: Figshare |
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Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified climate change CO2 concentrating mechanisms (CCMs) ocean acidification Posidonia oceanica rising CO2 seagrass Zostera marina |
spellingShingle |
Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified climate change CO2 concentrating mechanisms (CCMs) ocean acidification Posidonia oceanica rising CO2 seagrass Zostera marina Stephen Christopher Maberly Andrew W. Stott Brigitte Gontero DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
topic_facet |
Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified climate change CO2 concentrating mechanisms (CCMs) ocean acidification Posidonia oceanica rising CO2 seagrass Zostera marina |
description |
Seagrass meadows are one of the most productive ecosystems on the planet, but their photosynthesis rate may be limited by carbon dioxide but mitigated by exploiting the high concentration of bicarbonate in the ocean using different active processes. Seagrasses are declining worldwide at an accelerating rate because of numerous anthropogenic pressures. However, rising ocean concentrations of dissolved inorganic carbon, caused by increases in atmospheric carbon dioxide, may benefit seagrass photosynthesis. Here we compare the ability of two seagrass from the Mediterranean Sea, Posidonia oceanica (L.) Delile and Zostera marina L., to use carbon dioxide and bicarbonate at light saturation, and model how increasing concentrations of inorganic carbon affect their photosynthesis rate. pH-drift measurements confirmed that both species were able to use bicarbonate in addition to carbon dioxide, but that Z. marina was more effective than P. oceanica. Kinetic experiments showed that, compared to Z. marina, P. oceanica had a seven-fold higher affinity for carbon dioxide and a 1.6-fold higher affinity for bicarbonate. However, the maximal rate of bicarbonate uptake in Z. marina was 2.1-fold higher than in P. oceanica. In equilibrium with 410 ppm carbon dioxide in the atmosphere, the modelled rates of photosynthesis by Z. marina were slightly higher than P. oceanica, less carbon limited and depended on bicarbonate to a greater extent. This greater reliance by Z. marina is consistent with its less depleted 13 C content compared to P. oceanica. Modelled photosynthesis suggests that both species would depend on bicarbonate alone at an atmospheric carbon dioxide partial pressure of 280 ppm. P. oceanica was projected to benefit more than Z. marina with increasing atmospheric carbon dioxide partial pressures, and at the highest carbon dioxide scenario of 1135 ppm, would have higher rates of photosynthesis and be more saturated by inorganic carbon than Z. marina. In both species, the proportional reliance on bicarbonate declined ... |
format |
Dataset |
author |
Stephen Christopher Maberly Andrew W. Stott Brigitte Gontero |
author_facet |
Stephen Christopher Maberly Andrew W. Stott Brigitte Gontero |
author_sort |
Stephen Christopher Maberly |
title |
DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
title_short |
DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
title_full |
DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
title_fullStr |
DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
title_full_unstemmed |
DataSheet_1_The differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
title_sort |
datasheet_1_the differential ability of two species of seagrass to use carbon dioxide and bicarbonate and their modelled response to rising concentrations of inorganic carbon.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fpls.2022.936716.s001 https://figshare.com/articles/dataset/DataSheet_1_The_differential_ability_of_two_species_of_seagrass_to_use_carbon_dioxide_and_bicarbonate_and_their_modelled_response_to_rising_concentrations_of_inorganic_carbon_pdf/21420351 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
doi:10.3389/fpls.2022.936716.s001 https://figshare.com/articles/dataset/DataSheet_1_The_differential_ability_of_two_species_of_seagrass_to_use_carbon_dioxide_and_bicarbonate_and_their_modelled_response_to_rising_concentrations_of_inorganic_carbon_pdf/21420351 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fpls.2022.936716.s001 |
_version_ |
1810469798850592768 |