Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006
Uptake of half of the fossil fuel CO2 into the ocean causes gradual seawater acidification. This has been shown to slow down calcification of major calcifying groups, such as corals, foraminifera, and coccolithophores. Here we show that two of the most productive marine calcifying species, the cocco...
Main Authors: | , , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2006
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.721107 https://doi.org/10.1594/PANGAEA.721107 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.721107 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcidiscus leptoporus Calcification/Dissolution Calculated using CO2SYS Carbon inorganic dissolved particulate per cell organic Carbonate ion Carbon dioxide Carbon organic/inorganic ratio Chromista Coccoliths sphere size Coccolithus pelagicus Element analyser CNS Carlo Erba NA1500 EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification EXP Experiment Experimental treatment Growth/Morphology Growth rate Haptophyta Laboratory experiment Laboratory strains Langer_etal_06 Light:Dark cycle OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Primary production/Photosynthesis |
spellingShingle |
Alkalinity total Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcidiscus leptoporus Calcification/Dissolution Calculated using CO2SYS Carbon inorganic dissolved particulate per cell organic Carbonate ion Carbon dioxide Carbon organic/inorganic ratio Chromista Coccoliths sphere size Coccolithus pelagicus Element analyser CNS Carlo Erba NA1500 EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification EXP Experiment Experimental treatment Growth/Morphology Growth rate Haptophyta Laboratory experiment Laboratory strains Langer_etal_06 Light:Dark cycle OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Primary production/Photosynthesis Langer, Gerald Geisen, Markus Baumann, Karl-Heinz Kläs, Jessica Riebesell, Ulf Thoms, Silke Young, Jeremy Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 |
topic_facet |
Alkalinity total Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcidiscus leptoporus Calcification/Dissolution Calculated using CO2SYS Carbon inorganic dissolved particulate per cell organic Carbonate ion Carbon dioxide Carbon organic/inorganic ratio Chromista Coccoliths sphere size Coccolithus pelagicus Element analyser CNS Carlo Erba NA1500 EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification EXP Experiment Experimental treatment Growth/Morphology Growth rate Haptophyta Laboratory experiment Laboratory strains Langer_etal_06 Light:Dark cycle OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Primary production/Photosynthesis |
description |
Uptake of half of the fossil fuel CO2 into the ocean causes gradual seawater acidification. This has been shown to slow down calcification of major calcifying groups, such as corals, foraminifera, and coccolithophores. Here we show that two of the most productive marine calcifying species, the coccolithophores Coccolithus pelagicus and Calcidiscus leptoporus, do not follow the CO2-related calcification response previously found. In batch culture experiments, particulate inorganic carbon (PIC) of C. leptoporus changes with increasing CO2 concentration in a nonlinear relationship. A PIC optimum curve is obtained, with a maximum value at present-day surface ocean pCO2 levels (?360 ppm CO2). With particulate organic carbon (POC) remaining constant over the range of CO2 concentrations, the PIC/POC ratio also shows an optimum curve. In the C. pelagicus cultures, neither PIC nor POC changes significantly over the CO2 range tested, yielding a stable PIC/POC ratio. Since growth rate in both species did not change with pCO2, POC and PIC production show the same pattern as POC and PIC. The two investigated species respond differently to changes in the seawater carbonate chemistry, highlighting the need to consider species-specific effects when evaluating whole ecosystem responses. Changes of calcification rate (PIC production) were highly correlated to changes in coccolith morphology. Since our experimental results suggest altered coccolith morphology (at least in the case of C. leptoporus) in the geological past, coccoliths originating from sedimentary records of periods with different CO2 levels were analyzed. Analysis of sediment samples was performed on six cores obtained from locations well above the lysocline and covering a range of latitudes throughout the Atlantic Ocean. Scanning electron micrograph analysis of coccolith morphologies did not reveal any evidence for significant numbers of incomplete or malformed coccoliths of C. pelagicus and C. leptoporus in last glacial maximum and Holocene sediments. The ... |
format |
Dataset |
author |
Langer, Gerald Geisen, Markus Baumann, Karl-Heinz Kläs, Jessica Riebesell, Ulf Thoms, Silke Young, Jeremy |
author_facet |
Langer, Gerald Geisen, Markus Baumann, Karl-Heinz Kläs, Jessica Riebesell, Ulf Thoms, Silke Young, Jeremy |
author_sort |
Langer, Gerald |
title |
Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 |
title_short |
Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 |
title_full |
Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 |
title_fullStr |
Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 |
title_full_unstemmed |
Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 |
title_sort |
seawater carbonate chemistry, growth rate and processes during experiments with coccolithus pelagicus and calcidiscus leptoporus, 2006 |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.721107 https://doi.org/10.1594/PANGAEA.721107 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Langer, Gerald; Geisen, Markus; Baumann, Karl-Heinz; Kläs, Jessica; Riebesell, Ulf; Thoms, Silke; Young, Jeremy (2006): Species-specific responses of calcifying algae to changing seawater carbonate chemistry. Geochemistry, Geophysics, Geosystems, 7, Q09006, https://doi.org/10.1029/2005GC001227 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.721107 https://doi.org/10.1594/PANGAEA.721107 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.721107 https://doi.org/10.1029/2005GC001227 |
_version_ |
1766158366861688832 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.721107 2023-05-15T17:51:16+02:00 Seawater carbonate chemistry, growth rate and processes during experiments with Coccolithus pelagicus and Calcidiscus leptoporus, 2006 Langer, Gerald Geisen, Markus Baumann, Karl-Heinz Kläs, Jessica Riebesell, Ulf Thoms, Silke Young, Jeremy 2006-06-19 text/tab-separated-values, 189 data points https://doi.pangaea.de/10.1594/PANGAEA.721107 https://doi.org/10.1594/PANGAEA.721107 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.721107 https://doi.org/10.1594/PANGAEA.721107 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Langer, Gerald; Geisen, Markus; Baumann, Karl-Heinz; Kläs, Jessica; Riebesell, Ulf; Thoms, Silke; Young, Jeremy (2006): Species-specific responses of calcifying algae to changing seawater carbonate chemistry. Geochemistry, Geophysics, Geosystems, 7, Q09006, https://doi.org/10.1029/2005GC001227 Alkalinity total Aragonite saturation state Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcidiscus leptoporus Calcification/Dissolution Calculated using CO2SYS Carbon inorganic dissolved particulate per cell organic Carbonate ion Carbon dioxide Carbon organic/inorganic ratio Chromista Coccoliths sphere size Coccolithus pelagicus Element analyser CNS Carlo Erba NA1500 EPOCA EUR-OCEANS European network of excellence for Ocean Ecosystems Analysis European Project on Ocean Acidification EXP Experiment Experimental treatment Growth/Morphology Growth rate Haptophyta Laboratory experiment Laboratory strains Langer_etal_06 Light:Dark cycle OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Pelagos pH Phytoplankton Primary production/Photosynthesis Dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.721107 https://doi.org/10.1029/2005GC001227 2023-01-20T08:48:21Z Uptake of half of the fossil fuel CO2 into the ocean causes gradual seawater acidification. This has been shown to slow down calcification of major calcifying groups, such as corals, foraminifera, and coccolithophores. Here we show that two of the most productive marine calcifying species, the coccolithophores Coccolithus pelagicus and Calcidiscus leptoporus, do not follow the CO2-related calcification response previously found. In batch culture experiments, particulate inorganic carbon (PIC) of C. leptoporus changes with increasing CO2 concentration in a nonlinear relationship. A PIC optimum curve is obtained, with a maximum value at present-day surface ocean pCO2 levels (?360 ppm CO2). With particulate organic carbon (POC) remaining constant over the range of CO2 concentrations, the PIC/POC ratio also shows an optimum curve. In the C. pelagicus cultures, neither PIC nor POC changes significantly over the CO2 range tested, yielding a stable PIC/POC ratio. Since growth rate in both species did not change with pCO2, POC and PIC production show the same pattern as POC and PIC. The two investigated species respond differently to changes in the seawater carbonate chemistry, highlighting the need to consider species-specific effects when evaluating whole ecosystem responses. Changes of calcification rate (PIC production) were highly correlated to changes in coccolith morphology. Since our experimental results suggest altered coccolith morphology (at least in the case of C. leptoporus) in the geological past, coccoliths originating from sedimentary records of periods with different CO2 levels were analyzed. Analysis of sediment samples was performed on six cores obtained from locations well above the lysocline and covering a range of latitudes throughout the Atlantic Ocean. Scanning electron micrograph analysis of coccolith morphologies did not reveal any evidence for significant numbers of incomplete or malformed coccoliths of C. pelagicus and C. leptoporus in last glacial maximum and Holocene sediments. The ... Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science |