Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis
Abstract It is currently under debate whether organisms that regulate their acid–base status under environmental hypercapnia demand additional energy. This could impair animal fitness, but might be compensated for via increased ingestion rates when food is available. No data are yet available for do...
Published in: | ICES Journal of Marine Science |
---|---|
Main Authors: | , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1093/icesjms/fsv226 http://academic.oup.com/icesjms/article-pdf/73/3/927/31231705/fsv226.pdf |
id |
croxfordunivpr:10.1093/icesjms/fsv226 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1093/icesjms/fsv226 2024-09-15T18:00:39+00:00 Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis Hildebrandt, Nicole Sartoris, Franz J. Schulz, Kai G. Riebesell, Ulf Niehoff, Barbara the Federal Ministry of Education and Research 2015 http://dx.doi.org/10.1093/icesjms/fsv226 http://academic.oup.com/icesjms/article-pdf/73/3/927/31231705/fsv226.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 73, issue 3, page 927-936 ISSN 1095-9289 1054-3139 journal-article 2015 croxfordunivpr https://doi.org/10.1093/icesjms/fsv226 2024-08-05T04:33:46Z Abstract It is currently under debate whether organisms that regulate their acid–base status under environmental hypercapnia demand additional energy. This could impair animal fitness, but might be compensated for via increased ingestion rates when food is available. No data are yet available for dominant Calanus spp. from boreal and Arctic waters. To fill this gap, we incubated Calanus glacialis at 390, 1120, and 3000 µatm for 16 d with Thalassiosira weissflogii (diatom) as food source on-board RV Polarstern in Fram Strait in 2012. Every 4 d copepods were subsampled from all CO2 treatments and clearance and ingestion rates were determined. During the SOPRAN mesocosm experiment in Bergen, Norway, 2011, we weekly collected Calanus finmarchicus from mesocosms initially adjusted to 390 and 3000 µatm CO2 and measured grazing at low and high pCO2. In addition, copepods were deep frozen for body mass analyses. Elevated pCO2 did not directly affect grazing activities and body mass, suggesting that the copepods did not have additional energy demands for coping with acidification, neither during long-term exposure nor after immediate changes in pCO2. Shifts in seawater pH thus do not seem to challenge these copepod species. Article in Journal/Newspaper Calanus finmarchicus Calanus glacialis Fram Strait Ocean acidification Copepods Oxford University Press ICES Journal of Marine Science 73 3 927 936 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract It is currently under debate whether organisms that regulate their acid–base status under environmental hypercapnia demand additional energy. This could impair animal fitness, but might be compensated for via increased ingestion rates when food is available. No data are yet available for dominant Calanus spp. from boreal and Arctic waters. To fill this gap, we incubated Calanus glacialis at 390, 1120, and 3000 µatm for 16 d with Thalassiosira weissflogii (diatom) as food source on-board RV Polarstern in Fram Strait in 2012. Every 4 d copepods were subsampled from all CO2 treatments and clearance and ingestion rates were determined. During the SOPRAN mesocosm experiment in Bergen, Norway, 2011, we weekly collected Calanus finmarchicus from mesocosms initially adjusted to 390 and 3000 µatm CO2 and measured grazing at low and high pCO2. In addition, copepods were deep frozen for body mass analyses. Elevated pCO2 did not directly affect grazing activities and body mass, suggesting that the copepods did not have additional energy demands for coping with acidification, neither during long-term exposure nor after immediate changes in pCO2. Shifts in seawater pH thus do not seem to challenge these copepod species. |
author2 |
the Federal Ministry of Education and Research |
format |
Article in Journal/Newspaper |
author |
Hildebrandt, Nicole Sartoris, Franz J. Schulz, Kai G. Riebesell, Ulf Niehoff, Barbara |
spellingShingle |
Hildebrandt, Nicole Sartoris, Franz J. Schulz, Kai G. Riebesell, Ulf Niehoff, Barbara Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis |
author_facet |
Hildebrandt, Nicole Sartoris, Franz J. Schulz, Kai G. Riebesell, Ulf Niehoff, Barbara |
author_sort |
Hildebrandt, Nicole |
title |
Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis |
title_short |
Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis |
title_full |
Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis |
title_fullStr |
Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis |
title_full_unstemmed |
Ocean acidification does not alter grazing in the calanoid copepods Calanus finmarchicus and Calanus glacialis |
title_sort |
ocean acidification does not alter grazing in the calanoid copepods calanus finmarchicus and calanus glacialis |
publisher |
Oxford University Press (OUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1093/icesjms/fsv226 http://academic.oup.com/icesjms/article-pdf/73/3/927/31231705/fsv226.pdf |
genre |
Calanus finmarchicus Calanus glacialis Fram Strait Ocean acidification Copepods |
genre_facet |
Calanus finmarchicus Calanus glacialis Fram Strait Ocean acidification Copepods |
op_source |
ICES Journal of Marine Science volume 73, issue 3, page 927-936 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsv226 |
container_title |
ICES Journal of Marine Science |
container_volume |
73 |
container_issue |
3 |
container_start_page |
927 |
op_container_end_page |
936 |
_version_ |
1810437826662105088 |