Seawater carbonate chemistry and mesozooplankton abundances of KOSMOS 2014 mesocosm study
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2019
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| _version_ | 1867171875231105024 |
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| author | Algueró-Muñiz, Maria Horn, Henriette G Alvarez-Fernandez, Santiago Spisla, Carsten Aberle, Nicole Bach, Lennart Thomas Guan, WanChun Achterberg, Eric Pieter Riebesell, Ulf Boersma, Maarten |
| author_facet | Algueró-Muñiz, Maria Horn, Henriette G Alvarez-Fernandez, Santiago Spisla, Carsten Aberle, Nicole Bach, Lennart Thomas Guan, WanChun Achterberg, Eric Pieter Riebesell, Ulf Boersma, Maarten |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on a subtropical zooplankton community during oligotrophic, bloom, and post-bloom phases under a range of different pCO2 levels (from 400 to 1480 μatm). Furthermore, we simulated an upwelling event by adding 650 m-depth nutrient-rich water to the mesocosms, which initiated a phytoplankton bloom. No effects of pCO2 on the zooplankton community were visible in the oligotrophic conditions before the bloom. The zooplankton community responded to phytoplankton bloom by increased abundances in all treatments, although the response was delayed under high-pCO2 conditions. Microzooplankton was dominated by small dinoflagellates and aloricate ciliates, which were more abundant under medium- to high-pCO2 conditions. The most abundant mesozooplankters were calanoid copepods, which did not respond to CO2 treatments during the oligotrophic phase of the experiment but were found in higher abundance under medium- and high-pCO2 conditions toward the end of the experiment, most likely as a response to increased phyto- and microzooplankton standing stocks. The second most abundant mesozooplankton taxon were appendicularians, which did not show a response to the different pCO2 treatments. Overall, CO2 effects on zooplankton seemed to be primarily transmitted through significant CO2 effects on phytoplankton and therefore indirect pathways. We conclude that elevated pCO2 can change trophic cascades with significant effects on zooplankton, what might ultimately affect higher trophic levels in the future. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_931217 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and mesozooplankton abundances of KOSMOS 2014 mesocosm study Algueró-Muñiz, Maria Horn, Henriette G Alvarez-Fernandez, Santiago Spisla, Carsten Aberle, Nicole Bach, Lennart Thomas Guan, WanChun Achterberg, Eric Pieter Riebesell, Ulf Boersma, Maarten Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Community composition and diversity; DATE/TIME; Day of experiment; Depth, top/min; DEPTH, water; Entire community; Event label; Field experiment; Fish larvae; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); KOSMOS_2014; KOSMOS_2014_Atlantic-Reference; KOSMOS_2014_Mesocosm-M1; KOSMOS_2014_Mesocosm-M2; KOSMOS_2014_Mesocosm-M3; KOSMOS_2014_Mesocosm-M4; KOSMOS_2014_Mesocosm-M5; KOSMOS_2014_Mesocosm-M6; KOSMOS_2014_Mesocosm-M7; KOSMOS_2014_Mesocosm-M8; KOSMOS_2014_Mesocosm-M9; Macro-nutrients; MESO; Mesocosm experiment; Mesocosm or benthocosm; Mesozooplankton; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Salinity; Subtropical North Atlantic; Temperate; Temperature, water; Treatment; Type Ocean acidification (OA) is affecting marine ecosystems through changes in carbonate chemistry that may influence consumers of phytoplankton, often via trophic pathways. Using a mesocosm approach, we investigated OA effects on a subtropical zooplankton community during oligotrophic, bloom, and post-bloom phases under a range of different pCO2 levels (from 400 to 1480 μatm). Furthermore, we simulated an upwelling event by adding 650 m-depth nutrient-rich water to the mesocosms, which initiated a phytoplankton bloom. No effects of pCO2 on the zooplankton community were visible in the oligotrophic conditions before the bloom. The zooplankton community responded to phytoplankton bloom by increased abundances in all treatments, although the response was delayed under high-pCO2 conditions. Microzooplankton was dominated by small dinoflagellates and aloricate ciliates, which were more abundant under medium- to high-pCO2 conditions. The most abundant mesozooplankters were calanoid copepods, which did not respond to CO2 treatments during the oligotrophic phase of the experiment but were found in higher abundance under medium- and high-pCO2 conditions toward the end of the experiment, most likely as a response to increased phyto- and microzooplankton standing stocks. The second most abundant mesozooplankton taxon were appendicularians, which did not show a response to the different pCO2 treatments. Overall, CO2 effects on zooplankton seemed to be primarily transmitted through significant CO2 effects on phytoplankton and therefore indirect pathways. We conclude that elevated pCO2 can change trophic cascades with significant effects on zooplankton, what might ultimately affect higher trophic levels in the future. |
| title | Seawater carbonate chemistry and mesozooplankton abundances of KOSMOS 2014 mesocosm study |
| topic | Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Community composition and diversity; DATE/TIME; Day of experiment; Depth, top/min; DEPTH, water; Entire community; Event label; Field experiment; Fish larvae; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); KOSMOS_2014; KOSMOS_2014_Atlantic-Reference; KOSMOS_2014_Mesocosm-M1; KOSMOS_2014_Mesocosm-M2; KOSMOS_2014_Mesocosm-M3; KOSMOS_2014_Mesocosm-M4; KOSMOS_2014_Mesocosm-M5; KOSMOS_2014_Mesocosm-M6; KOSMOS_2014_Mesocosm-M7; KOSMOS_2014_Mesocosm-M8; KOSMOS_2014_Mesocosm-M9; Macro-nutrients; MESO; Mesocosm experiment; Mesocosm or benthocosm; Mesozooplankton; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Salinity; Subtropical North Atlantic; Temperate; Temperature, water; Treatment; Type |
| url | https://doi.org/10.1594/PANGAEA.931217 |