Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/72325
DC Field | Value | Language |
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dc.contributor.author | Tames Espinosa, Maria Teresa | en_US |
dc.contributor.author | Martínez Sánchez, Ico | en_US |
dc.contributor.author | Romero Kutzner, Vanesa | en_US |
dc.contributor.author | Coca Saenz De Albéniz, Josep | en_US |
dc.contributor.author | Algueró-Muñiz, María | en_US |
dc.contributor.author | Horn, Henriette G. | en_US |
dc.contributor.author | Ludwig, Andrea | en_US |
dc.contributor.author | Taucher, Jan | en_US |
dc.contributor.author | Bach, Lennart | en_US |
dc.contributor.author | Riebesell, Ulf | en_US |
dc.contributor.author | Packard, Theodore Train | en_US |
dc.contributor.author | Gómez Cabrera, María Milagrosa | en_US |
dc.date.accessioned | 2020-05-13T09:43:52Z | - |
dc.date.available | 2020-05-13T09:43:52Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 2296-7745 | en_US |
dc.identifier.uri | http://hdl.handle.net/10553/72325 | - |
dc.description.abstract | In the autumn of 2014, nine large mesocosms were deployed in the oligotrophic subtropical North-Atlantic coastal waters off Gran Canaria (Spain). Their deployment was designed to address the acidification effects of CO2 levels from 400 to 1,400 μatm, on a plankton community experiencing upwelling of nutrient-rich deep water. Among other parameters, chlorophyll a (chl-a), potential respiration (Φ), and biomass in terms of particulate protein (B) were measured in the microplankton community (0.7–50.0 μm) during an oligotrophic phase (Phase I), a phytoplankton-bloom phase (Phase II), and a post-bloom phase (Phase III). Here, we explore the use of the Φ/chl-a ratio in monitoring shifts in the microplankton community composition and its metabolism. Φ/chl-a values below 2.5 μL O2 h−1 (μg chl-a)−1 indicated a community dominated by photoautotrophs. When Φ/chl-a ranged higher, between 2.5 and 7.0 μL O2 h−1 (μg chl-a)−1, it indicated a mixed community of phytoplankton, microzooplankton and heterotrophic prokaryotes. When Φ/chl-a rose above 7.0 μL O2 h−1 (μg chl-a)−1, it indicated a community where microzooplankton proliferated (>10.0 μL O2 h−1 (μg chl-a)−1), because heterotrophic dinoflagellates bloomed. The first derivative of B, as a function of time (dB/dt), indicates the rate of protein build-up when positive and the rate of protein loss, when negative. It revealed that the maximum increase in particulate protein (biomass) occurred between 1 and 2 days before the chl-a peak. A day after this peak, the trough revealed the maximum net biomass loss. This analysis did not detect significant changes in particulate protein, neither in Phase I nor in Phase III. Integral analysis of Φ, chl-a and B, over the duration of each phase, for each mesocosm, reflected a positive relationship between Φ and pCO2 during Phase II [α = 230·10−5 μL O2 h−1 L−1 (μatm CO2)−1 (phase-day)−1, R2 = 0.30] and between chl-a and pCO2 during Phase III [α = 100·10−5 μg chl-a L−1 (μ atmCO2)−1 (phase-day)−1, R2 = 0.84]. At the end of Phase II, a harmful algal species (HAS), Vicicitus globosus, bloomed in the high pCO2 mesocosms. In these mesocosms, microzooplankton did not proliferate, and chl-a retention time in the water column increased. In these V. globosus-disrupted communities, the Φ/chl-a ratio [4.1 ± 1.5 μL O2 h−1 (μg chl-a)−1] was more similar to the Φ/chl-a ratio in a mixed plankton community than to a photoautotroph-dominated one. | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | Frontiers in Marine Science | en_US |
dc.source | Frontiers in marine science [ISSN 2296-7745], Mayo (2020) | en_US |
dc.subject | 251001 Oceanografía biológica | en_US |
dc.subject.other | Ocean acidification | en_US |
dc.subject.other | Mesocosms | en_US |
dc.subject.other | Nutrient fertilization | en_US |
dc.subject.other | Subtropical North-Atlantic | en_US |
dc.subject.other | Potential respiration | en_US |
dc.subject.other | Plankton metabolism | en_US |
dc.subject.other | Mixotrophy | en_US |
dc.title | Metabolic Responses of Subtropical Microplankton After a Simulated Deep-Water Upwelling Event Suggest a Possible Dominance of Mixotrophy Under Increasing CO2 Levels | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.3389/fmars.2020.00307 | en_US |
dc.investigacion | Ciencias | en_US |
dc.type2 | Artículo | en_US |
dc.utils.revision | Sí | en_US |
dc.date.coverdate | Mayo 2020 | en_US |
dc.identifier.ulpgc | Sí | en_US |
dc.identifier.ulpgc | Sí | en_US |
dc.identifier.ulpgc | Sí | en_US |
dc.identifier.ulpgc | Sí | en_US |
dc.contributor.buulpgc | BU-BAS | en_US |
dc.description.sjr | 1,558 | |
dc.description.jcr | 4,912 | |
dc.description.sjrq | Q1 | |
dc.description.jcrq | Q1 | |
dc.description.scie | SCIE | |
item.fulltext | Con texto completo | - |
item.grantfulltext | open | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | GIR ECOAQUA: Biodiversidad y Conservación | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | GIR ECOAQUA: Ecofisiología de Organismos Marinos | - |
crisitem.author.dept | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.dept | Departamento de Biología | - |
crisitem.author.orcid | 0000-0003-0607-5321 | - |
crisitem.author.orcid | 0000-0002-7676-2066 | - |
crisitem.author.orcid | 0000-0001-7167-2662 | - |
crisitem.author.orcid | 0000-0003-0625-8240 | - |
crisitem.author.orcid | 0000-0002-5880-1199 | - |
crisitem.author.orcid | 0000-0002-7396-6493 | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.parentorg | IU de Investigación en Acuicultura Sostenible y Ec | - |
crisitem.author.fullName | Tames Espinosa, Maria Teresa | - |
crisitem.author.fullName | Martínez Sánchez, Ico | - |
crisitem.author.fullName | Romero Kutzner,Vanesa | - |
crisitem.author.fullName | Saenz De Albeniz,Josep Coca | - |
crisitem.author.fullName | Packard, Theodore Train | - |
crisitem.author.fullName | Gómez Cabrera, María Milagrosa | - |
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