Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry
The combined consequences of the multi-stressors of pH and nutrient availability upon the growth of a marine diatom were investigated. Thalassiosira weissflogii was grown in N- or P-limited batch culture in sealed systems, with pH commencing at 8.2 (extant conditions) or 7.6 (ocean acidification [OA...
Published in: | Journal of Phycology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2014
|
Subjects: | |
Online Access: | http://plymsea.ac.uk/id/eprint/6204/ https://doi.org/10.1111/jpy.12208 |
id |
ftplymouthml:oai:plymsea.ac.uk:6204 |
---|---|
record_format |
openpolar |
spelling |
ftplymouthml:oai:plymsea.ac.uk:6204 2023-05-15T17:51:35+02:00 Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry Clark, DR Flynn, KJ Fabian, H Mock, T 2014-08 http://plymsea.ac.uk/id/eprint/6204/ https://doi.org/10.1111/jpy.12208 unknown Clark, DR; Flynn, KJ; Fabian, H; Mock, T. 2014 Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry. Journal of Phycology, 50 (4). 640-651. https://doi.org/10.1111/jpy.12208 <https://doi.org/10.1111/jpy.12208> Ecology and Environment Marine Sciences Publication - Article PeerReviewed 2014 ftplymouthml https://doi.org/10.1111/jpy.12208 2022-09-13T05:48:35Z The combined consequences of the multi-stressors of pH and nutrient availability upon the growth of a marine diatom were investigated. Thalassiosira weissflogii was grown in N- or P-limited batch culture in sealed systems, with pH commencing at 8.2 (extant conditions) or 7.6 (ocean acidification [OA] conditions), and then pH was allowed to either drift with growth, or was held fixed. Results indicated that within the pH range tested, the stability of environmental pH rather than its value (i.e., OA vs. extant) fundamentally influenced biomass accumul-ation and C:N:P stoichiometry. Despite large changes in total alkalinity in the fixed pH systems, final biomass production was consistently greater in these systems than that in drifting pH systems. In drift systems, pH increased to exceed pH 9.5, a level of alkalinity that was inhibitory to growth. No statis-tically significant differences between pH treatments were measured for N:C, P:C or N:P ratios during nutrient-replete growth, although the diatom expre-ssed greater plasticity in P:C and N:P ratios than in N:C during this growth phase. During nutrient-deplete conditions, the capacity for uncoupled carbon fixa-tion at fixed pH was considerably greater than that measured in drift pH systems, leading to strong contrasts in C:N:P stoichiometry between these treatments. Whether environmental pH was stable or drifted directly influenced the extent of physiological stress. In contrast, few distinctions could be drawn between extant versus OA conditions for cell physiology. Article in Journal/Newspaper Ocean acidification Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Journal of Phycology 50 4 640 651 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
unknown |
topic |
Ecology and Environment Marine Sciences |
spellingShingle |
Ecology and Environment Marine Sciences Clark, DR Flynn, KJ Fabian, H Mock, T Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
topic_facet |
Ecology and Environment Marine Sciences |
description |
The combined consequences of the multi-stressors of pH and nutrient availability upon the growth of a marine diatom were investigated. Thalassiosira weissflogii was grown in N- or P-limited batch culture in sealed systems, with pH commencing at 8.2 (extant conditions) or 7.6 (ocean acidification [OA] conditions), and then pH was allowed to either drift with growth, or was held fixed. Results indicated that within the pH range tested, the stability of environmental pH rather than its value (i.e., OA vs. extant) fundamentally influenced biomass accumul-ation and C:N:P stoichiometry. Despite large changes in total alkalinity in the fixed pH systems, final biomass production was consistently greater in these systems than that in drifting pH systems. In drift systems, pH increased to exceed pH 9.5, a level of alkalinity that was inhibitory to growth. No statis-tically significant differences between pH treatments were measured for N:C, P:C or N:P ratios during nutrient-replete growth, although the diatom expre-ssed greater plasticity in P:C and N:P ratios than in N:C during this growth phase. During nutrient-deplete conditions, the capacity for uncoupled carbon fixa-tion at fixed pH was considerably greater than that measured in drift pH systems, leading to strong contrasts in C:N:P stoichiometry between these treatments. Whether environmental pH was stable or drifted directly influenced the extent of physiological stress. In contrast, few distinctions could be drawn between extant versus OA conditions for cell physiology. |
format |
Article in Journal/Newspaper |
author |
Clark, DR Flynn, KJ Fabian, H Mock, T |
author_facet |
Clark, DR Flynn, KJ Fabian, H Mock, T |
author_sort |
Clark, DR |
title |
Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
title_short |
Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
title_full |
Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
title_fullStr |
Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
title_full_unstemmed |
Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
title_sort |
variation in elemental stoichiometry of the marine diatomthalassiosira weissflogii(bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry |
publishDate |
2014 |
url |
http://plymsea.ac.uk/id/eprint/6204/ https://doi.org/10.1111/jpy.12208 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Clark, DR; Flynn, KJ; Fabian, H; Mock, T. 2014 Variation in elemental stoichiometry of the marine diatomThalassiosira weissflogii(Bacillariophyceae) in response to combined nutrient stress and changes in carbonate chemistry. Journal of Phycology, 50 (4). 640-651. https://doi.org/10.1111/jpy.12208 <https://doi.org/10.1111/jpy.12208> |
op_doi |
https://doi.org/10.1111/jpy.12208 |
container_title |
Journal of Phycology |
container_volume |
50 |
container_issue |
4 |
container_start_page |
640 |
op_container_end_page |
651 |
_version_ |
1766158791088275456 |