Responses of three tropical seagrass species to CO2 enrichment
Increased atmospheric carbon dioxide leads to ocean acidification and carbon dioxide (CO2) enrichment of seawater. Given the important ecological functions of seagrass meadows, understanding their responses to CO2 will be critical for the management of coastal ecosystems. This study examined the phy...
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Language: | English |
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PANGAEA
2015
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.859062 https://doi.org/10.1594/PANGAEA.859062 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.859062 |
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openpolar |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total standard error Ammonium Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates non structural solube in tissue Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Charophyta Chlorophyll a Chlorophyll b Coast and continental shelf Cockle_Bay Colorimetric Cymodocea serrulata EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis/respiration ratio Growth/Morphology Growth rate Halodule uninervis Identification Irradiance Laboratory experiment Light saturation Maximum potential capacity of photosynthesis |
spellingShingle |
Alkalinity total standard error Ammonium Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates non structural solube in tissue Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Charophyta Chlorophyll a Chlorophyll b Coast and continental shelf Cockle_Bay Colorimetric Cymodocea serrulata EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis/respiration ratio Growth/Morphology Growth rate Halodule uninervis Identification Irradiance Laboratory experiment Light saturation Maximum potential capacity of photosynthesis Ow, Yan X Collier, C J Uthicke, Sven Responses of three tropical seagrass species to CO2 enrichment |
topic_facet |
Alkalinity total standard error Ammonium Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates non structural solube in tissue Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Charophyta Chlorophyll a Chlorophyll b Coast and continental shelf Cockle_Bay Colorimetric Cymodocea serrulata EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis/respiration ratio Growth/Morphology Growth rate Halodule uninervis Identification Irradiance Laboratory experiment Light saturation Maximum potential capacity of photosynthesis |
description |
Increased atmospheric carbon dioxide leads to ocean acidification and carbon dioxide (CO2) enrichment of seawater. Given the important ecological functions of seagrass meadows, understanding their responses to CO2 will be critical for the management of coastal ecosystems. This study examined the physiological responses of three tropical seagrasses to a range of seawater pCO2 levels in a laboratory. Cymodocea serrulata, Halodule uninervis and Thalassia hemprichii were exposed to four different pCO2 treatments (442-1204 µatm) for 2 weeks, approximating the range of end-of-century emission scenarios. Photosynthetic responses were quantified using optode-based oxygen flux measurements. Across all three species, net productivity and energetic surplus (PG:R) significantly increased with a rise in pCO2 (linear models, P < 0.05). Photosynthesis-irradiance curve-derived photosynthetic parameters-maximum photosynthetic rates (P max) and efficiency (alpha) also increased as pCO2 increased (linear models, P < 0.05). The response for productivity measures was similar across species, i.e. similar slopes in linear models. A decrease in compensation light requirement (Ec) with increasing pCO2 was evident in C. serrulata and H. uninervis, but not in T. hemprichii. Despite higher productivity with pCO2 enrichment, leaf growth rates in C. serrulata did not increase, while those in H. uninervis and T. hemprichii significantly increased with increasing pCO2 levels. While seagrasses can be carbon-limited and productivity can respond positively to CO2 enrichment, varying carbon allocation strategies amongst species suggest differential growth response between species. Thus, future increase in seawater CO2 concentration may lead to an overall increase in seagrass biomass and productivity, as well as community changes in seagrass meadows. |
format |
Dataset |
author |
Ow, Yan X Collier, C J Uthicke, Sven |
author_facet |
Ow, Yan X Collier, C J Uthicke, Sven |
author_sort |
Ow, Yan X |
title |
Responses of three tropical seagrass species to CO2 enrichment |
title_short |
Responses of three tropical seagrass species to CO2 enrichment |
title_full |
Responses of three tropical seagrass species to CO2 enrichment |
title_fullStr |
Responses of three tropical seagrass species to CO2 enrichment |
title_full_unstemmed |
Responses of three tropical seagrass species to CO2 enrichment |
title_sort |
responses of three tropical seagrass species to co2 enrichment |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.859062 https://doi.org/10.1594/PANGAEA.859062 |
op_coverage |
LATITUDE: -19.181000 * LONGITUDE: 146.844000 * DATE/TIME START: 2013-03-01T00:00:00 * DATE/TIME END: 2013-03-01T00:00:00 |
long_lat |
ENVELOPE(146.844000,146.844000,-19.181000,-19.181000) |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Ow, Yan X; Collier, C J; Uthicke, Sven (2015): Responses of three tropical seagrass species to CO2 enrichment. Marine Biology, 162(5), 1005-1017, https://doi.org/10.1007/s00227-015-2644-6 |
op_relation |
Ow, Yan X; Collier, C J; Uthicke, Sven: Photosynthetic and growth responses in three tropical seagrass species to pCO2 enrichment (440, 700, 890, 1204 µatm) (NERP TE 5.2, AIMS). Australia's Tropical Land And Seas, https://eatlas.org.au/geonetwork/srv/eng/catalog.search#/metadata/0fd70612-a07a-492a-bacf-8e0b7951da4d Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.859062 https://doi.org/10.1594/PANGAEA.859062 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.85906210.1007/s00227-015-2644-6 |
_version_ |
1810469825025146880 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.859062 2024-09-15T18:28:27+00:00 Responses of three tropical seagrass species to CO2 enrichment Ow, Yan X Collier, C J Uthicke, Sven LATITUDE: -19.181000 * LONGITUDE: 146.844000 * DATE/TIME START: 2013-03-01T00:00:00 * DATE/TIME END: 2013-03-01T00:00:00 2015 text/tab-separated-values, 4178 data points https://doi.pangaea.de/10.1594/PANGAEA.859062 https://doi.org/10.1594/PANGAEA.859062 en eng PANGAEA Ow, Yan X; Collier, C J; Uthicke, Sven: Photosynthetic and growth responses in three tropical seagrass species to pCO2 enrichment (440, 700, 890, 1204 µatm) (NERP TE 5.2, AIMS). Australia's Tropical Land And Seas, https://eatlas.org.au/geonetwork/srv/eng/catalog.search#/metadata/0fd70612-a07a-492a-bacf-8e0b7951da4d Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.859062 https://doi.org/10.1594/PANGAEA.859062 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Ow, Yan X; Collier, C J; Uthicke, Sven (2015): Responses of three tropical seagrass species to CO2 enrichment. Marine Biology, 162(5), 1005-1017, https://doi.org/10.1007/s00227-015-2644-6 Alkalinity total standard error Ammonium Aragonite saturation state Benthos Bicarbonate ion Biomass/Abundance/Elemental composition Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbohydrates non structural solube in tissue Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Charophyta Chlorophyll a Chlorophyll b Coast and continental shelf Cockle_Bay Colorimetric Cymodocea serrulata EXP Experiment Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis/respiration ratio Growth/Morphology Growth rate Halodule uninervis Identification Irradiance Laboratory experiment Light saturation Maximum potential capacity of photosynthesis dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.85906210.1007/s00227-015-2644-6 2024-07-24T02:31:33Z Increased atmospheric carbon dioxide leads to ocean acidification and carbon dioxide (CO2) enrichment of seawater. Given the important ecological functions of seagrass meadows, understanding their responses to CO2 will be critical for the management of coastal ecosystems. This study examined the physiological responses of three tropical seagrasses to a range of seawater pCO2 levels in a laboratory. Cymodocea serrulata, Halodule uninervis and Thalassia hemprichii were exposed to four different pCO2 treatments (442-1204 µatm) for 2 weeks, approximating the range of end-of-century emission scenarios. Photosynthetic responses were quantified using optode-based oxygen flux measurements. Across all three species, net productivity and energetic surplus (PG:R) significantly increased with a rise in pCO2 (linear models, P < 0.05). Photosynthesis-irradiance curve-derived photosynthetic parameters-maximum photosynthetic rates (P max) and efficiency (alpha) also increased as pCO2 increased (linear models, P < 0.05). The response for productivity measures was similar across species, i.e. similar slopes in linear models. A decrease in compensation light requirement (Ec) with increasing pCO2 was evident in C. serrulata and H. uninervis, but not in T. hemprichii. Despite higher productivity with pCO2 enrichment, leaf growth rates in C. serrulata did not increase, while those in H. uninervis and T. hemprichii significantly increased with increasing pCO2 levels. While seagrasses can be carbon-limited and productivity can respond positively to CO2 enrichment, varying carbon allocation strategies amongst species suggest differential growth response between species. Thus, future increase in seawater CO2 concentration may lead to an overall increase in seagrass biomass and productivity, as well as community changes in seagrass meadows. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(146.844000,146.844000,-19.181000,-19.181000) |