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...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 https://doi.org/10.3354/meps09551 https://backend.orbit.dtu.dk/ws/files/6631196/m447p087.pdf |
id |
ftdtupubl:oai:pure.atira.dk:publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 2024-04-28T08:15:04+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 Møller, E.F. Markager, S. Hansen, B.W. 2012 application/pdf https://orbit.dtu.dk/en/publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 https://doi.org/10.3354/meps09551 https://backend.orbit.dtu.dk/ws/files/6631196/m447p087.pdf eng eng info:eu-repo/grantAgreement/EC/FP7/264933 https://orbit.dtu.dk/en/publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 info:eu-repo/semantics/openAccess Kjellerup , S , Dünweber , M , Swalethorp , R , Nielsen , T G , Møller , E F , Markager , S & Hansen , B W 2012 , ' Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, Western Greenland ' , Marine Ecology - Progress Series , vol. 447 , pp. 87-108 . https://doi.org/10.3354/meps09551 article 2012 ftdtupubl https://doi.org/10.3354/meps09551 2024-04-03T15:04:39Z 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 Disko Bay Greenland Copepods Technical University of Denmark: DTU Orbit Marine Ecology Progress Series 447 87 108 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
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 Møller, E.F. Markager, S. Hansen, B.W. |
spellingShingle |
Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Nielsen, Torkel Gissel Møller, E.F. Markager, S. Hansen, B.W. Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, Western Greenland |
author_facet |
Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Nielsen, Torkel Gissel Møller, E.F. Markager, S. Hansen, B.W. |
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 |
publishDate |
2012 |
url |
https://orbit.dtu.dk/en/publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 https://doi.org/10.3354/meps09551 https://backend.orbit.dtu.dk/ws/files/6631196/m447p087.pdf |
genre |
Calanus finmarchicus Disko Bay Greenland Copepods |
genre_facet |
Calanus finmarchicus Disko Bay Greenland Copepods |
op_source |
Kjellerup , S , Dünweber , M , Swalethorp , R , Nielsen , T G , Møller , E F , Markager , S & Hansen , B W 2012 , ' Effects of a future warmer ocean on the coexisting copepods Calanus finmarchicus and C. glacialis in Disko Bay, Western Greenland ' , Marine Ecology - Progress Series , vol. 447 , pp. 87-108 . https://doi.org/10.3354/meps09551 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/264933 https://orbit.dtu.dk/en/publications/54e72832-d97d-4f6f-ad4d-2f1ed6bab658 |
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 |
_version_ |
1797580852249493504 |