Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis
The Arctic experiences rapid environmental changes and to date, we cannot predict to what extent calanoid copepods can adapt to shifts in environmental conditions. On the Arctic shelf, the large species Calanus glacialis accumulates energy reserves in surface waters during the productive season and...
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Universität Bremen
2015
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/876 2023-05-15T14:48:15+02:00 Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis Saisonale Veränderungen in der Physiologie von Calanus glacialis in einer sich wandelnden Arktis Freese, Daniela Niehoff, Barbara Hagen, Wilhelm 2015-05-13 application/pdf https://media.suub.uni-bremen.de/handle/elib/876 https://nbn-resolving.org/urn:nbn:de:gbv:46-00104605-13 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/876 urn:nbn:de:gbv:46-00104605-13 info:eu-repo/semantics/openAccess Arctic Svalbard calanoid copepods Calanus glacialis overwintering citrate synthase malate dehydrogenase 3-hydroxyacyl CoA dehydrogenase aminoacyl- tRNA-synthetase extracellular pH ion concentration haemolymph substrate SDS-PAGE lipase/esterase proteinase biochemical composition 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2015 ftsubbremen 2022-11-09T07:09:27Z The Arctic experiences rapid environmental changes and to date, we cannot predict to what extent calanoid copepods can adapt to shifts in environmental conditions. On the Arctic shelf, the large species Calanus glacialis accumulates energy reserves in surface waters during the productive season and overwinters in diapause in deep waters. This thesis aims to investigate the physiology of C. glacialis in a comprehensive approach during activity and diapause in relation to environmental factors. This study revealed clear seasonal patterns in the physiology of C. glacialis. Enzymatic activities and extracellular pH (pHe) were high during the productive season, while catabolic activities were high and pHe low in winter. The usage of internal energy reserves was high in the end of overwintering. The timing of diapause is adjusted to the prevailing environmental conditions, which suggests that C. glacialis may be able to adjust to future climate driven changes in the environment. Doctoral or Postdoctoral Thesis Arctic Arktis Arktis* Calanus glacialis Svalbard Copepods Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic Svalbard |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Arctic Svalbard calanoid copepods Calanus glacialis overwintering citrate synthase malate dehydrogenase 3-hydroxyacyl CoA dehydrogenase aminoacyl- tRNA-synthetase extracellular pH ion concentration haemolymph substrate SDS-PAGE lipase/esterase proteinase biochemical composition 570 570 Life sciences biology ddc:570 |
spellingShingle |
Arctic Svalbard calanoid copepods Calanus glacialis overwintering citrate synthase malate dehydrogenase 3-hydroxyacyl CoA dehydrogenase aminoacyl- tRNA-synthetase extracellular pH ion concentration haemolymph substrate SDS-PAGE lipase/esterase proteinase biochemical composition 570 570 Life sciences biology ddc:570 Freese, Daniela Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis |
topic_facet |
Arctic Svalbard calanoid copepods Calanus glacialis overwintering citrate synthase malate dehydrogenase 3-hydroxyacyl CoA dehydrogenase aminoacyl- tRNA-synthetase extracellular pH ion concentration haemolymph substrate SDS-PAGE lipase/esterase proteinase biochemical composition 570 570 Life sciences biology ddc:570 |
description |
The Arctic experiences rapid environmental changes and to date, we cannot predict to what extent calanoid copepods can adapt to shifts in environmental conditions. On the Arctic shelf, the large species Calanus glacialis accumulates energy reserves in surface waters during the productive season and overwinters in diapause in deep waters. This thesis aims to investigate the physiology of C. glacialis in a comprehensive approach during activity and diapause in relation to environmental factors. This study revealed clear seasonal patterns in the physiology of C. glacialis. Enzymatic activities and extracellular pH (pHe) were high during the productive season, while catabolic activities were high and pHe low in winter. The usage of internal energy reserves was high in the end of overwintering. The timing of diapause is adjusted to the prevailing environmental conditions, which suggests that C. glacialis may be able to adjust to future climate driven changes in the environment. |
author2 |
Niehoff, Barbara Hagen, Wilhelm |
format |
Doctoral or Postdoctoral Thesis |
author |
Freese, Daniela |
author_facet |
Freese, Daniela |
author_sort |
Freese, Daniela |
title |
Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis |
title_short |
Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis |
title_full |
Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis |
title_fullStr |
Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis |
title_full_unstemmed |
Life history traits of copepods in a changing Arctic : seasonal patterns in the physiology of Calanus glacialis |
title_sort |
life history traits of copepods in a changing arctic : seasonal patterns in the physiology of calanus glacialis |
publisher |
Universität Bremen |
publishDate |
2015 |
url |
https://media.suub.uni-bremen.de/handle/elib/876 https://nbn-resolving.org/urn:nbn:de:gbv:46-00104605-13 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arktis Arktis* Calanus glacialis Svalbard Copepods |
genre_facet |
Arctic Arktis Arktis* Calanus glacialis Svalbard Copepods |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/876 urn:nbn:de:gbv:46-00104605-13 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766319342925905920 |