The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea
The assimilation and regeneration of dissolved inorganic nitrogen, and the concentration of N 2 O, was investigated at stations located in the NW European shelf sea during June/July 2011. These observational measurements within the photic zone demonstrated the simultaneous regeneration and assimilat...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | http://plymsea.ac.uk/id/eprint/6195/ http://plymsea.ac.uk/id/eprint/6195/2/2014%20Clark%20et%20al%20Biogeosciences.pdf http://www.biogeosciences.net/11/4985/2014/bg-11-4985-2014.pdf https://doi.org/10.5194/bg-11-4985-2014 |
id |
ftplymouthml:oai:plymsea.ac.uk:6195 |
---|---|
record_format |
openpolar |
spelling |
ftplymouthml:oai:plymsea.ac.uk:6195 2023-05-15T17:51:06+02:00 The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea Clark, DR Brown, IJ Rees, AP Somerfield, PJ Miller, PI 2014-09-18 text http://plymsea.ac.uk/id/eprint/6195/ http://plymsea.ac.uk/id/eprint/6195/2/2014%20Clark%20et%20al%20Biogeosciences.pdf http://www.biogeosciences.net/11/4985/2014/bg-11-4985-2014.pdf https://doi.org/10.5194/bg-11-4985-2014 en eng http://plymsea.ac.uk/id/eprint/6195/2/2014%20Clark%20et%20al%20Biogeosciences.pdf Clark, DR; Brown, IJ; Rees, AP; Somerfield, PJ; Miller, PI. 2014 The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea. Biogeosciences, 11. 4985-5005. https://doi.org/10.5194/bg-11-4985-2014 <https://doi.org/10.5194/bg-11-4985-2014> cc_by_nd CC-BY-ND Chemistry Ecology and Environment Marine Sciences Publication - Article PeerReviewed 2014 ftplymouthml https://doi.org/10.5194/bg-11-4985-2014 2022-09-13T05:48:35Z The assimilation and regeneration of dissolved inorganic nitrogen, and the concentration of N 2 O, was investigated at stations located in the NW European shelf sea during June/July 2011. These observational measurements within the photic zone demonstrated the simultaneous regeneration and assimilation of NH 4 + , NO 2 − and NO 3 − . NH 4 + was assimilated at 1.82–49.12 nmol N L −1 h −1 and regenerated at 3.46–14.60 nmol N L −1 h −1 NO 2 - was assimilated at 0–2.08 nmol N L −1 h −1 and regenerated at 0.01–1.85 nmol N L −1 h −1 NO 3 − was assimilated at 0.67–18.75 nmol N L −1 h −1 and regenerated at 0.05–28.97 nmol N L −1 h −1 . Observations implied that these processes were closely coupled at the regional scale and that nitrogen recycling played an important role in sustaining phytoplankton growth during the summer. The [N 2 O], measured in water column profiles, was 10.13 ± 1.11 nmol L −1 and did not strongly diverge from atmospheric equilibrium indicating that sampled marine regions were neither a strong source nor sink of N 2 O to the atmosphere. Multivariate analysis of data describing water column biogeochemistry and its links to N-cycling activity failed to explain the observed variance in rates of N-regeneration and N-assimilation, possibly due to the limited number of process rate observations. In the surface waters of five further stations, ocean acidification (OA) bioassay experiments were conducted to investigate the response of NH 4 + oxidising and regenerating organisms to simulated OA conditions, including the implications for [N 2 O]. Multivariate analysis was undertaken which considered the complete bioassay data set of measured variables describing changes in N-regeneration rate, [N 2 O] and the biogeochemical composition of seawater. While anticipating biogeochemical differences between locations, we aimed to test the hypothesis that the underlying mechanism through which pelagic N-regeneration responded to simulated OA conditions was independent of location. Our objective was to develop a ... Article in Journal/Newspaper Ocean acidification Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Biogeosciences 11 18 4985 5005 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
topic |
Chemistry Ecology and Environment Marine Sciences |
spellingShingle |
Chemistry Ecology and Environment Marine Sciences Clark, DR Brown, IJ Rees, AP Somerfield, PJ Miller, PI The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea |
topic_facet |
Chemistry Ecology and Environment Marine Sciences |
description |
The assimilation and regeneration of dissolved inorganic nitrogen, and the concentration of N 2 O, was investigated at stations located in the NW European shelf sea during June/July 2011. These observational measurements within the photic zone demonstrated the simultaneous regeneration and assimilation of NH 4 + , NO 2 − and NO 3 − . NH 4 + was assimilated at 1.82–49.12 nmol N L −1 h −1 and regenerated at 3.46–14.60 nmol N L −1 h −1 NO 2 - was assimilated at 0–2.08 nmol N L −1 h −1 and regenerated at 0.01–1.85 nmol N L −1 h −1 NO 3 − was assimilated at 0.67–18.75 nmol N L −1 h −1 and regenerated at 0.05–28.97 nmol N L −1 h −1 . Observations implied that these processes were closely coupled at the regional scale and that nitrogen recycling played an important role in sustaining phytoplankton growth during the summer. The [N 2 O], measured in water column profiles, was 10.13 ± 1.11 nmol L −1 and did not strongly diverge from atmospheric equilibrium indicating that sampled marine regions were neither a strong source nor sink of N 2 O to the atmosphere. Multivariate analysis of data describing water column biogeochemistry and its links to N-cycling activity failed to explain the observed variance in rates of N-regeneration and N-assimilation, possibly due to the limited number of process rate observations. In the surface waters of five further stations, ocean acidification (OA) bioassay experiments were conducted to investigate the response of NH 4 + oxidising and regenerating organisms to simulated OA conditions, including the implications for [N 2 O]. Multivariate analysis was undertaken which considered the complete bioassay data set of measured variables describing changes in N-regeneration rate, [N 2 O] and the biogeochemical composition of seawater. While anticipating biogeochemical differences between locations, we aimed to test the hypothesis that the underlying mechanism through which pelagic N-regeneration responded to simulated OA conditions was independent of location. Our objective was to develop a ... |
format |
Article in Journal/Newspaper |
author |
Clark, DR Brown, IJ Rees, AP Somerfield, PJ Miller, PI |
author_facet |
Clark, DR Brown, IJ Rees, AP Somerfield, PJ Miller, PI |
author_sort |
Clark, DR |
title |
The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea |
title_short |
The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea |
title_full |
The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea |
title_fullStr |
The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea |
title_full_unstemmed |
The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea |
title_sort |
influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest european shelf sea |
publishDate |
2014 |
url |
http://plymsea.ac.uk/id/eprint/6195/ http://plymsea.ac.uk/id/eprint/6195/2/2014%20Clark%20et%20al%20Biogeosciences.pdf http://www.biogeosciences.net/11/4985/2014/bg-11-4985-2014.pdf https://doi.org/10.5194/bg-11-4985-2014 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://plymsea.ac.uk/id/eprint/6195/2/2014%20Clark%20et%20al%20Biogeosciences.pdf Clark, DR; Brown, IJ; Rees, AP; Somerfield, PJ; Miller, PI. 2014 The influence of ocean acidification on nitrogen regeneration and nitrous oxide production in the northwest European shelf sea. Biogeosciences, 11. 4985-5005. https://doi.org/10.5194/bg-11-4985-2014 <https://doi.org/10.5194/bg-11-4985-2014> |
op_rights |
cc_by_nd |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.5194/bg-11-4985-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
18 |
container_start_page |
4985 |
op_container_end_page |
5005 |
_version_ |
1766158129322524672 |