Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata
Ecophysiological studies looking at the combined effects of ocean acidification (OA) and iron (Fe) availability on Southern Ocean (SO) phytoplankton are still limited. To gain a better mechanistic understanding of how the two ecologically important SO phytoplankton groups cope with OA and Fe limitat...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.943573 2024-09-15T17:42:16+00:00 Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata Camoying, Marianne Thoms, Silke Geuer, Jana K Koch, Boris P Bischof, Kai Trimborn, Scarlett 2022 text/tab-separated-values, 3068 data points https://doi.pangaea.de/10.1594/PANGAEA.943573 https://doi.org/10.1594/PANGAEA.943573 en eng PANGAEA Camoying, Marianne; Thoms, Silke; Geuer, Jana K; Koch, Boris P; Bischof, Kai; Trimborn, Scarlett (2022): In contrast to diatoms, cryptophytes are susceptible to iron limitation, but not to ocean acidification. Physiologia Plantarum, 174(1), e13614, https://doi.org/10.1111/ppl.13614 https://doi.pangaea.de/10.1594/PANGAEA.943573 https://doi.org/10.1594/PANGAEA.943573 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Alloxanthin standard deviation Carbon organic particulate Carbon/Nitrogen ratio Chlorophyll a Chlorophyll c2 Cobalt/Carbon ratio Connectivity between photosystem II Copper/Carbon ratio cryptophytes culture experiment Diadinoxanthin diatoms Electron transport rate absolute Elemental analyzer HEKAtechGmbH Euro EA Fluorometer fast repetition rate FRRF Fucoxanthin Functional absorption cross sections of photosystem II reaction centers dataset 2022 ftpangaea https://doi.org/10.1594/PANGAEA.94357310.1111/ppl.13614 2024-07-24T02:31:34Z Ecophysiological studies looking at the combined effects of ocean acidification (OA) and iron (Fe) availability on Southern Ocean (SO) phytoplankton are still limited. To gain a better mechanistic understanding of how the two ecologically important SO phytoplankton groups cope with OA and Fe limitation, we conducted laboratory incubation experiments on the Antarctic cryptophyte Geminigera cryophila and the diatom Pseudo‐nitzschia subcurvata. Geminigera cryophila (CCMP 2564) was isolated from the Southern Ocean and obtained from Matt Johnson's Laboratory of Protistan Ecology at the Woods Hole Oceanography Institute, United States. Pseudo-nitzschia subcurvata was isolated from the Southern Ocean by P. Assmy during Polarstern expedition ANT- XXI/4. Both species were grown at 2°C under different pCO2 (400 vs. 900 μatm) and Fe (0.6 vs. 1.2 nM) conditions. For P. subcurvata, an additional high pCO2 level was applied (1400 μatm). For both species, growth, photophysiology, cellular quotas of particulate organic carbon, trace metals and pigments were assessed. Our study reveals that Fe limitation was detrimental for the growth of G. cryophila and suppressed the positive OA effect. The diatom was efficient in coping with low Fe, but was stressed by OA while both factors together strongly impacted its growth. The distinct physiological response of both species to OA and Fe limitation explains their occurrence in the field. Based on our results, Fe availability is an important modulator of OA effects on SO phytoplankton, with different implications on the occurrence of cryptophytes and diatoms in the future. Dataset Antarc* Antarctic Ocean acidification Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alloxanthin standard deviation Carbon organic particulate Carbon/Nitrogen ratio Chlorophyll a Chlorophyll c2 Cobalt/Carbon ratio Connectivity between photosystem II Copper/Carbon ratio cryptophytes culture experiment Diadinoxanthin diatoms Electron transport rate absolute Elemental analyzer HEKAtechGmbH Euro EA Fluorometer fast repetition rate FRRF Fucoxanthin Functional absorption cross sections of photosystem II reaction centers |
spellingShingle |
Alloxanthin standard deviation Carbon organic particulate Carbon/Nitrogen ratio Chlorophyll a Chlorophyll c2 Cobalt/Carbon ratio Connectivity between photosystem II Copper/Carbon ratio cryptophytes culture experiment Diadinoxanthin diatoms Electron transport rate absolute Elemental analyzer HEKAtechGmbH Euro EA Fluorometer fast repetition rate FRRF Fucoxanthin Functional absorption cross sections of photosystem II reaction centers Camoying, Marianne Thoms, Silke Geuer, Jana K Koch, Boris P Bischof, Kai Trimborn, Scarlett Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata |
topic_facet |
Alloxanthin standard deviation Carbon organic particulate Carbon/Nitrogen ratio Chlorophyll a Chlorophyll c2 Cobalt/Carbon ratio Connectivity between photosystem II Copper/Carbon ratio cryptophytes culture experiment Diadinoxanthin diatoms Electron transport rate absolute Elemental analyzer HEKAtechGmbH Euro EA Fluorometer fast repetition rate FRRF Fucoxanthin Functional absorption cross sections of photosystem II reaction centers |
description |
Ecophysiological studies looking at the combined effects of ocean acidification (OA) and iron (Fe) availability on Southern Ocean (SO) phytoplankton are still limited. To gain a better mechanistic understanding of how the two ecologically important SO phytoplankton groups cope with OA and Fe limitation, we conducted laboratory incubation experiments on the Antarctic cryptophyte Geminigera cryophila and the diatom Pseudo‐nitzschia subcurvata. Geminigera cryophila (CCMP 2564) was isolated from the Southern Ocean and obtained from Matt Johnson's Laboratory of Protistan Ecology at the Woods Hole Oceanography Institute, United States. Pseudo-nitzschia subcurvata was isolated from the Southern Ocean by P. Assmy during Polarstern expedition ANT- XXI/4. Both species were grown at 2°C under different pCO2 (400 vs. 900 μatm) and Fe (0.6 vs. 1.2 nM) conditions. For P. subcurvata, an additional high pCO2 level was applied (1400 μatm). For both species, growth, photophysiology, cellular quotas of particulate organic carbon, trace metals and pigments were assessed. Our study reveals that Fe limitation was detrimental for the growth of G. cryophila and suppressed the positive OA effect. The diatom was efficient in coping with low Fe, but was stressed by OA while both factors together strongly impacted its growth. The distinct physiological response of both species to OA and Fe limitation explains their occurrence in the field. Based on our results, Fe availability is an important modulator of OA effects on SO phytoplankton, with different implications on the occurrence of cryptophytes and diatoms in the future. |
format |
Dataset |
author |
Camoying, Marianne Thoms, Silke Geuer, Jana K Koch, Boris P Bischof, Kai Trimborn, Scarlett |
author_facet |
Camoying, Marianne Thoms, Silke Geuer, Jana K Koch, Boris P Bischof, Kai Trimborn, Scarlett |
author_sort |
Camoying, Marianne |
title |
Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata |
title_short |
Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata |
title_full |
Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata |
title_fullStr |
Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata |
title_full_unstemmed |
Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata |
title_sort |
acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the antarctic phytoplankton geminigera cryophila and pseudo‐nitzschia subcurvata |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.943573 https://doi.org/10.1594/PANGAEA.943573 |
genre |
Antarc* Antarctic Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctic Ocean acidification Southern Ocean |
op_relation |
Camoying, Marianne; Thoms, Silke; Geuer, Jana K; Koch, Boris P; Bischof, Kai; Trimborn, Scarlett (2022): In contrast to diatoms, cryptophytes are susceptible to iron limitation, but not to ocean acidification. Physiologia Plantarum, 174(1), e13614, https://doi.org/10.1111/ppl.13614 https://doi.pangaea.de/10.1594/PANGAEA.943573 https://doi.org/10.1594/PANGAEA.943573 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.94357310.1111/ppl.13614 |
_version_ |
1810488776246427648 |