Seawater carbonate chemistry and metabolism of bacterial communities from coastal waters
Fuente:
PANGAEA
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2018
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867171018243571712 |
|---|---|
| author | Fuentes-Lema, Antonio Sanleón-Bartolomé, Henar Lubian, L M Sobrino, Cristina |
| author_facet | Fuentes-Lema, Antonio Sanleón-Bartolomé, Henar Lubian, L M Sobrino, Cristina |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Microcosm experiments to assess the bacterioplankton's response to phytoplankton-derived organic matter obtained under current and future ocean CO2 levels were performed. Surface seawater enriched with inorganic nutrients was bubbled for 8 days with air (current CO2 scenario) or with a 1000ppm CO2 air mixture (future CO2 scenario) under solar radiation. The organic matter produced under the current and future CO2 scenarios was subsequently used as an inoculum. Triplicate 12L flasks filled with 1.2µm of filtered natural seawater enriched with the organic matter inocula were incubated in the dark for 8 days under CO2 conditions simulating current and future CO2 scenarios, to study the bacterial response. The acidification of the media increased bacterial respiration at the beginning of the experiment, while the addition of the organic matter produced under future levels of CO2 was related to changes in bacterial production and abundance. This resulted in a 67% increase in the integrated bacterial respiration under future CO2 conditions compared to present CO2 conditions and 41% higher integrated bacterial abundance with the addition of the acidified organic matter compared to samples with the addition of non acidified organic matter. This study demonstrates that the increase in atmospheric CO2 levels can impact bacterioplankton metabolism directly, by changes in the respiration rate, and indirectly, by changes on the organic matter, which affected bacterial production and abundance. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_912775 |
| institution | PANGAEA |
| language | en |
| publishDate | 2018 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and metabolism of bacterial communities from coastal waters Fuentes-Lema, Antonio Sanleón-Bartolomé, Henar Lubian, L M Sobrino, Cristina Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Bacteria; Bacteria, carbon demand; Bacteria, carbon demand, cumulative; Bacteria, carbon demand, cumulative, standard deviation; Bacteria, carbon demand, standard deviation; Bacteria, growth efficiency; Bacteria, growth efficiency, standard deviation; Bacteria, standard deviation; Bacterial production; Bacterial production, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, organic, dissolved; Carbon, organic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Chlorophyll a; Chlorophyll a, standard deviation; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; EXP; Experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Laboratory experiment; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other; Other metabolic rates; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, standard deviation; pH, total scale; Respiration; Respiration rate, oxygen; Respiration rate, oxygen, cumulative; Respiration rate, oxygen, cumulative, standard deviation; Respiration rate, oxygen, standard deviation; Ria_de_Vigo; Salinity; Salinity, standard deviation; Temperate; Temperature, water; Temperature, water, standard deviation; Treatment; Type Microcosm experiments to assess the bacterioplankton's response to phytoplankton-derived organic matter obtained under current and future ocean CO2 levels were performed. Surface seawater enriched with inorganic nutrients was bubbled for 8 days with air (current CO2 scenario) or with a 1000ppm CO2 air mixture (future CO2 scenario) under solar radiation. The organic matter produced under the current and future CO2 scenarios was subsequently used as an inoculum. Triplicate 12L flasks filled with 1.2µm of filtered natural seawater enriched with the organic matter inocula were incubated in the dark for 8 days under CO2 conditions simulating current and future CO2 scenarios, to study the bacterial response. The acidification of the media increased bacterial respiration at the beginning of the experiment, while the addition of the organic matter produced under future levels of CO2 was related to changes in bacterial production and abundance. This resulted in a 67% increase in the integrated bacterial respiration under future CO2 conditions compared to present CO2 conditions and 41% higher integrated bacterial abundance with the addition of the acidified organic matter compared to samples with the addition of non acidified organic matter. This study demonstrates that the increase in atmospheric CO2 levels can impact bacterioplankton metabolism directly, by changes in the respiration rate, and indirectly, by changes on the organic matter, which affected bacterial production and abundance. |
| title | Seawater carbonate chemistry and metabolism of bacterial communities from coastal waters |
| topic | Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Bacteria; Bacteria, carbon demand; Bacteria, carbon demand, cumulative; Bacteria, carbon demand, cumulative, standard deviation; Bacteria, carbon demand, standard deviation; Bacteria, growth efficiency; Bacteria, growth efficiency, standard deviation; Bacteria, standard deviation; Bacterial production; Bacterial production, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, organic, dissolved; Carbon, organic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Chlorophyll a; Chlorophyll a, standard deviation; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; EXP; Experiment; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Laboratory experiment; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other; Other metabolic rates; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, standard deviation; pH, total scale; Respiration; Respiration rate, oxygen; Respiration rate, oxygen, cumulative; Respiration rate, oxygen, cumulative, standard deviation; Respiration rate, oxygen, standard deviation; Ria_de_Vigo; Salinity; Salinity, standard deviation; Temperate; Temperature, water; Temperature, water, standard deviation; Treatment; Type |
| url | https://doi.org/10.1594/PANGAEA.912775 |