Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland
The effects of temperature and food was examined for Calanus finmarchicus and C. glacialis during 3 phases of the phytoplankton spring bloom in Disko Bay, western Greenland. The 2 species were collected during pre-bloom, bloom, and post-bloom and exposed to temperatures from 0 to 10°C, combined with...
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Language: | English |
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Online Access: | https://doi.org/10.3354/meps09551 |
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ftzenodo:oai:zenodo.org:6925 2024-09-15T18:00:38+00:00 Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Nielsen, Torkel Gissel Moller, Eva Friis Markager, Stiig Hansen, Benni Winding 2012-02-01 https://doi.org/10.3354/meps09551 eng eng Zenodo https://zenodo.org/communities/euro-basin https://zenodo.org/communities/eu https://doi.org/10.3354/meps09551 oai:zenodo.org:6925 info:eu-repo/semantics/openAccess Marine ecology progress series, (2012-02-01) Calanus finmarchicus Calanus glacialis Egg production Fecal pellet production Global warming Population dynamics info:eu-repo/semantics/article 2012 ftzenodo https://doi.org/10.3354/meps09551 2024-07-26T03:59:41Z The effects of temperature and food was examined for Calanus finmarchicus and C. glacialis during 3 phases of the phytoplankton spring bloom in Disko Bay, western Greenland. The 2 species were collected during pre-bloom, bloom, and post-bloom and exposed to temperatures from 0 to 10°C, combined with deficient or excess food. Fecal pellet and egg production were measured as indices for grazing and secondary production, respectively. Furthermore, changes in body carbon, nitrogen, and lipid content were measured. C. glacialis sampled before the bloom and incubated with excess food exhibited high specific egg production at temperatures between 0 and 2.5°C. Higher temperatures did not increase egg production considerably, whereas egg production for C. finmarchicus more than tripled between 2.5 and 5°C. Starved C. glacialis produced eggs at all temperatures stimulated by increasing temperatures, whereas starved C. finmarchicus needed temperatures above 5°C to produce eggs fueled by their lipid stores. Few C. finmarchicus had mature gonads at the initiation of the pre-bloom and bloom experiment, and egg production of C. finmarchicus therefore only increased as the ratio of individuals with mature gonads increased. During the bloom, both C. glacialis and C. finmarchicus used the high food availability for egg production, while refueling or exhausting their lipid stores, respectively. Finally, during the post-bloom experiment, production was low by C. finmarchicus, whereas C. glacialis had terminated production. Our results suggest that a future warmer ocean will reduce the advantage of early spawning by C. glacialis and that C. finmarchicus will become increasingly prevalent. Article in Journal/Newspaper Calanus finmarchicus Calanus glacialis Disko Bay Greenland Copepods Zenodo Marine Ecology Progress Series 447 87 108 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Calanus finmarchicus Calanus glacialis Egg production Fecal pellet production Global warming Population dynamics |
spellingShingle |
Calanus finmarchicus Calanus glacialis Egg production Fecal pellet production Global warming Population dynamics Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Nielsen, Torkel Gissel Moller, Eva Friis Markager, Stiig Hansen, Benni Winding Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland |
topic_facet |
Calanus finmarchicus Calanus glacialis Egg production Fecal pellet production Global warming Population dynamics |
description |
The effects of temperature and food was examined for Calanus finmarchicus and C. glacialis during 3 phases of the phytoplankton spring bloom in Disko Bay, western Greenland. The 2 species were collected during pre-bloom, bloom, and post-bloom and exposed to temperatures from 0 to 10°C, combined with deficient or excess food. Fecal pellet and egg production were measured as indices for grazing and secondary production, respectively. Furthermore, changes in body carbon, nitrogen, and lipid content were measured. C. glacialis sampled before the bloom and incubated with excess food exhibited high specific egg production at temperatures between 0 and 2.5°C. Higher temperatures did not increase egg production considerably, whereas egg production for C. finmarchicus more than tripled between 2.5 and 5°C. Starved C. glacialis produced eggs at all temperatures stimulated by increasing temperatures, whereas starved C. finmarchicus needed temperatures above 5°C to produce eggs fueled by their lipid stores. Few C. finmarchicus had mature gonads at the initiation of the pre-bloom and bloom experiment, and egg production of C. finmarchicus therefore only increased as the ratio of individuals with mature gonads increased. During the bloom, both C. glacialis and C. finmarchicus used the high food availability for egg production, while refueling or exhausting their lipid stores, respectively. Finally, during the post-bloom experiment, production was low by C. finmarchicus, whereas C. glacialis had terminated production. Our results suggest that a future warmer ocean will reduce the advantage of early spawning by C. glacialis and that C. finmarchicus will become increasingly prevalent. |
format |
Article in Journal/Newspaper |
author |
Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Nielsen, Torkel Gissel Moller, Eva Friis Markager, Stiig Hansen, Benni Winding |
author_facet |
Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Nielsen, Torkel Gissel Moller, Eva Friis Markager, Stiig Hansen, Benni Winding |
author_sort |
Kjellerup, Sanne |
title |
Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland |
title_short |
Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland |
title_full |
Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland |
title_fullStr |
Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland |
title_full_unstemmed |
Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, western Greenland |
title_sort |
effects of a future warmer ocean on the coexisting copepods calanus finmarchicus and c. glacialis in disko bay, western greenland |
publisher |
Zenodo |
publishDate |
2012 |
url |
https://doi.org/10.3354/meps09551 |
genre |
Calanus finmarchicus Calanus glacialis Disko Bay Greenland Copepods |
genre_facet |
Calanus finmarchicus Calanus glacialis Disko Bay Greenland Copepods |
op_source |
Marine ecology progress series, (2012-02-01) |
op_relation |
https://zenodo.org/communities/euro-basin https://zenodo.org/communities/eu https://doi.org/10.3354/meps09551 oai:zenodo.org:6925 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps09551 |
container_title |
Marine Ecology Progress Series |
container_volume |
447 |
container_start_page |
87 |
op_container_end_page |
108 |
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1810437819293761536 |