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://forskning.ruc.dk/da/publications/e9e76c6c-a526-487f-80bc-e7781d81ffeb https://doi.org/10.3354/meps09551 https://hdl.handle.net/1800/e9e76c6c-a526-487f-80bc-e7781d81ffeb |
id |
fturoskildefispu:oai:pure.atira.dk:publications/e9e76c6c-a526-487f-80bc-e7781d81ffeb |
---|---|
record_format |
openpolar |
spelling |
fturoskildefispu:oai:pure.atira.dk:publications/e9e76c6c-a526-487f-80bc-e7781d81ffeb 2023-05-15T15:47:53+02:00 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 Gissel Nielsen, Torkel Friis Møller, Eva Markager, Stiig Hansen, Benni Winding 2012 https://forskning.ruc.dk/da/publications/e9e76c6c-a526-487f-80bc-e7781d81ffeb https://doi.org/10.3354/meps09551 https://hdl.handle.net/1800/e9e76c6c-a526-487f-80bc-e7781d81ffeb eng eng info:eu-repo/semantics/restrictedAccess Kjellerup , S , Dünweber , M , Swalethorp , R , Gissel Nielsen , T , Friis Møller , E , 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 Calanus finmarchicus Calanus glacialis Global warming Egg production Fecal pellet production Population dynamics article 2012 fturoskildefispu https://doi.org/10.3354/meps09551 2022-12-11T06:56:35Z 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. 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 ... Article in Journal/Newspaper Calanus finmarchicus Calanus glacialis Disko Bay Greenland Copepods Roskilde University Research Portal (RUC) Greenland Marine Ecology Progress Series 447 87 108 |
institution |
Open Polar |
collection |
Roskilde University Research Portal (RUC) |
op_collection_id |
fturoskildefispu |
language |
English |
topic |
Calanus finmarchicus Calanus glacialis Global warming Egg production Fecal pellet production Population dynamics |
spellingShingle |
Calanus finmarchicus Calanus glacialis Global warming Egg production Fecal pellet production Population dynamics Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Gissel Nielsen, Torkel Friis Møller, Eva 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 Global warming Egg production Fecal pellet production 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. 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 ... |
format |
Article in Journal/Newspaper |
author |
Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Gissel Nielsen, Torkel Friis Møller, Eva Markager, Stiig Hansen, Benni Winding |
author_facet |
Kjellerup, Sanne Dünweber, Michael Swalethorp, Rasmus Gissel Nielsen, Torkel Friis Møller, Eva 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 |
publishDate |
2012 |
url |
https://forskning.ruc.dk/da/publications/e9e76c6c-a526-487f-80bc-e7781d81ffeb https://doi.org/10.3354/meps09551 https://hdl.handle.net/1800/e9e76c6c-a526-487f-80bc-e7781d81ffeb |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Calanus finmarchicus Calanus glacialis Disko Bay Greenland Copepods |
genre_facet |
Calanus finmarchicus Calanus glacialis Disko Bay Greenland Copepods |
op_source |
Kjellerup , S , Dünweber , M , Swalethorp , R , Gissel Nielsen , T , Friis Møller , E , 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_rights |
info:eu-repo/semantics/restrictedAccess |
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_ |
1766382844947464192 |