Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates
High-latitude oceans have been identified as particularly vulnerable to ocean acidification if anthropogenic CO2 emissions continue. Marine microbes are an essential part of the marine food web and are a critical link in biogeochemical processes in the ocean, such as the cycling of nutrients and car...
Main Authors: | , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2020
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.926447 https://doi.pangaea.de/10.1594/PANGAEA.926447 |
id |
ftdatacite:10.1594/pangaea.926447 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Antarctic Community composition and diversity Containers and aquaria 20-1000 L or < 1 m**2 Entire community Laboratory experiment Pelagos Polar Type Date Duration, number of days Fugacity of carbon dioxide water at sea surface temperature wet air Identification Replicate Picophytoplankton Nanophytoplankton Nanoflagellates, heterotrophic Prokaryotes Treatment Position Irradiance Chlorophyll a Light attenuation, vertical Species Cell density Cell density, standard error Carbon, inorganic, dissolved pH Salinity Temperature, water Alkalinity, total Aragonite saturation state Calcite saturation state Nitrogen oxide Phosphate Silicate Ammonium Carbonate system computation flag Carbon dioxide Partial pressure of carbon dioxide water at sea surface temperature wet air Bicarbonate ion Carbonate ion Experiment Calculated using seacarb after Nisumaa et al. 2010 Ocean Acidification International Coordination Centre OA-ICC |
spellingShingle |
Antarctic Community composition and diversity Containers and aquaria 20-1000 L or < 1 m**2 Entire community Laboratory experiment Pelagos Polar Type Date Duration, number of days Fugacity of carbon dioxide water at sea surface temperature wet air Identification Replicate Picophytoplankton Nanophytoplankton Nanoflagellates, heterotrophic Prokaryotes Treatment Position Irradiance Chlorophyll a Light attenuation, vertical Species Cell density Cell density, standard error Carbon, inorganic, dissolved pH Salinity Temperature, water Alkalinity, total Aragonite saturation state Calcite saturation state Nitrogen oxide Phosphate Silicate Ammonium Carbonate system computation flag Carbon dioxide Partial pressure of carbon dioxide water at sea surface temperature wet air Bicarbonate ion Carbonate ion Experiment Calculated using seacarb after Nisumaa et al. 2010 Ocean Acidification International Coordination Centre OA-ICC Deppeler, Stacy Schulz, Kai Georg Hancock, Alyce M Pascoe, Penelope McKinlay, John Davidson, Andrew T Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates |
topic_facet |
Antarctic Community composition and diversity Containers and aquaria 20-1000 L or < 1 m**2 Entire community Laboratory experiment Pelagos Polar Type Date Duration, number of days Fugacity of carbon dioxide water at sea surface temperature wet air Identification Replicate Picophytoplankton Nanophytoplankton Nanoflagellates, heterotrophic Prokaryotes Treatment Position Irradiance Chlorophyll a Light attenuation, vertical Species Cell density Cell density, standard error Carbon, inorganic, dissolved pH Salinity Temperature, water Alkalinity, total Aragonite saturation state Calcite saturation state Nitrogen oxide Phosphate Silicate Ammonium Carbonate system computation flag Carbon dioxide Partial pressure of carbon dioxide water at sea surface temperature wet air Bicarbonate ion Carbonate ion Experiment Calculated using seacarb after Nisumaa et al. 2010 Ocean Acidification International Coordination Centre OA-ICC |
description |
High-latitude oceans have been identified as particularly vulnerable to ocean acidification if anthropogenic CO2 emissions continue. Marine microbes are an essential part of the marine food web and are a critical link in biogeochemical processes in the ocean, such as the cycling of nutrients and carbon. Despite this, the response of Antarctic marine microbial communities to ocean acidification is poorly understood. We investigated the effect of increasing fCO2 on the growth of heterotrophic nanoflagellates (HNFs), nano- and picophytoplankton, and prokaryotes (heterotrophic Bacteria and Archaea) in a natural coastal Antarctic marine microbial community from Prydz Bay, East Antarctica. At CO2 levels ≥634 µatm, HNF abundance was reduced, coinciding with increased abundance of picophytoplankton and prokaryotes. This increase in picophytoplankton and prokaryote abundance was likely due to a reduction in top-down control of grazing HNFs. Nanophytoplankton abundance was elevated in the 634 µatm treatment, suggesting that moderate increases in CO2 may stimulate growth. The taxonomic and morphological differences in CO2 tolerance we observed are likely to favour dominance of microbial communities by prokaryotes, nanophytoplankton, and picophytoplankton. Such changes in predator–prey interactions with ocean acidification could have a significant effect on the food web and biogeochemistry in the Southern Ocean, intensifying organic-matter recycling in surface waters; reducing vertical carbon flux; and reducing the quality, quantity, and availability of food for higher trophic levels. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2020-12-25. |
format |
Dataset |
author |
Deppeler, Stacy Schulz, Kai Georg Hancock, Alyce M Pascoe, Penelope McKinlay, John Davidson, Andrew T |
author_facet |
Deppeler, Stacy Schulz, Kai Georg Hancock, Alyce M Pascoe, Penelope McKinlay, John Davidson, Andrew T |
author_sort |
Deppeler, Stacy |
title |
Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates |
title_short |
Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates |
title_full |
Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates |
title_fullStr |
Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates |
title_full_unstemmed |
Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates |
title_sort |
seawater carbonate chemistry and growth and grazing impact of antarctic heterotrophic nanoflagellates |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2020 |
url |
https://dx.doi.org/10.1594/pangaea.926447 https://doi.pangaea.de/10.1594/PANGAEA.926447 |
geographic |
Antarctic Southern Ocean East Antarctica Prydz Bay |
geographic_facet |
Antarctic Southern Ocean East Antarctica Prydz Bay |
genre |
Antarc* Antarctic Antarctica East Antarctica Ocean acidification Prydz Bay Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ocean acidification Prydz Bay Southern Ocean |
op_relation |
https://CRAN.R-project.org/package=seacarb https://dx.doi.org/10.5194/bg-17-4153-2020 https://dx.doi.org/10.4225/15/599a7dfe9470a https://dx.doi.org/10.4225/15/5b234e4bb9313 https://dx.doi.org/10.4225/15/592b83a5c7506 https://CRAN.R-project.org/package=seacarb |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.926447 https://doi.org/10.5194/bg-17-4153-2020 https://doi.org/10.4225/15/599a7dfe9470a https://doi.org/10.4225/15/5b234e4bb9313 https://doi.org/10.4225/15/592b83a5c7506 |
_version_ |
1766257797242028032 |
spelling |
ftdatacite:10.1594/pangaea.926447 2023-05-15T13:52:56+02:00 Seawater carbonate chemistry and growth and grazing impact of Antarctic heterotrophic nanoflagellates Deppeler, Stacy Schulz, Kai Georg Hancock, Alyce M Pascoe, Penelope McKinlay, John Davidson, Andrew T 2020 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.926447 https://doi.pangaea.de/10.1594/PANGAEA.926447 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://CRAN.R-project.org/package=seacarb https://dx.doi.org/10.5194/bg-17-4153-2020 https://dx.doi.org/10.4225/15/599a7dfe9470a https://dx.doi.org/10.4225/15/5b234e4bb9313 https://dx.doi.org/10.4225/15/592b83a5c7506 https://CRAN.R-project.org/package=seacarb Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Antarctic Community composition and diversity Containers and aquaria 20-1000 L or < 1 m**2 Entire community Laboratory experiment Pelagos Polar Type Date Duration, number of days Fugacity of carbon dioxide water at sea surface temperature wet air Identification Replicate Picophytoplankton Nanophytoplankton Nanoflagellates, heterotrophic Prokaryotes Treatment Position Irradiance Chlorophyll a Light attenuation, vertical Species Cell density Cell density, standard error Carbon, inorganic, dissolved pH Salinity Temperature, water Alkalinity, total Aragonite saturation state Calcite saturation state Nitrogen oxide Phosphate Silicate Ammonium Carbonate system computation flag Carbon dioxide Partial pressure of carbon dioxide water at sea surface temperature wet air Bicarbonate ion Carbonate ion Experiment Calculated using seacarb after Nisumaa et al. 2010 Ocean Acidification International Coordination Centre OA-ICC dataset Dataset 2020 ftdatacite https://doi.org/10.1594/pangaea.926447 https://doi.org/10.5194/bg-17-4153-2020 https://doi.org/10.4225/15/599a7dfe9470a https://doi.org/10.4225/15/5b234e4bb9313 https://doi.org/10.4225/15/592b83a5c7506 2021-11-05T12:55:41Z High-latitude oceans have been identified as particularly vulnerable to ocean acidification if anthropogenic CO2 emissions continue. Marine microbes are an essential part of the marine food web and are a critical link in biogeochemical processes in the ocean, such as the cycling of nutrients and carbon. Despite this, the response of Antarctic marine microbial communities to ocean acidification is poorly understood. We investigated the effect of increasing fCO2 on the growth of heterotrophic nanoflagellates (HNFs), nano- and picophytoplankton, and prokaryotes (heterotrophic Bacteria and Archaea) in a natural coastal Antarctic marine microbial community from Prydz Bay, East Antarctica. At CO2 levels ≥634 µatm, HNF abundance was reduced, coinciding with increased abundance of picophytoplankton and prokaryotes. This increase in picophytoplankton and prokaryote abundance was likely due to a reduction in top-down control of grazing HNFs. Nanophytoplankton abundance was elevated in the 634 µatm treatment, suggesting that moderate increases in CO2 may stimulate growth. The taxonomic and morphological differences in CO2 tolerance we observed are likely to favour dominance of microbial communities by prokaryotes, nanophytoplankton, and picophytoplankton. Such changes in predator–prey interactions with ocean acidification could have a significant effect on the food web and biogeochemistry in the Southern Ocean, intensifying organic-matter recycling in surface waters; reducing vertical carbon flux; and reducing the quality, quantity, and availability of food for higher trophic levels. : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2020-12-25. Dataset Antarc* Antarctic Antarctica East Antarctica Ocean acidification Prydz Bay Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean East Antarctica Prydz Bay |