Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline
Ocean warming and acidification are two of the main factors driving current ecosystem changes. Yet, the combined impacts on marine organisms are insufficiently understood and the stress response may differ at the population level across climate gradients. This thesis investigates the combined effect...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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Universität Bremen
2017
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/1521 https://nbn-resolving.org/urn:nbn:de:gbv:46-00106863-13 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/1521 2023-05-15T15:09:29+02:00 Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline Auswirkungen synergistischer Effekte von Ozeanversauerung und Temperaturerhöhung auf die Physiologie mariner Invertebraten im latitudinalen Gradienten Zittier, Zora Pörtner, Hans-Otto Buck, Bela 2017-11-24 application/pdf https://media.suub.uni-bremen.de/handle/elib/1521 https://nbn-resolving.org/urn:nbn:de:gbv:46-00106863-13 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/1521 urn:nbn:de:gbv:46-00106863-13 info:eu-repo/semantics/openAccess Hyas araneus Mytilus edulis global warming ocean acidification acid-base regulation thermal tolerance righting response oxygen consumption anaerobiosis metabolic depression NMR spectroscopy Artic North Sea White Sea 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2017 ftsubbremen 2022-11-09T07:09:37Z Ocean warming and acidification are two of the main factors driving current ecosystem changes. Yet, the combined impacts on marine organisms are insufficiently understood and the stress response may differ at the population level across climate gradients. This thesis investigates the combined effects of rising temperature and CO2 level on energy metabolism, acid-base regulation capacity and thermal tolerance of Mytilus edulis populations along a latitudinal cline and, in combination with exercise capacity, in the Arctic population of Hyas araneus. All organisms exposed to acute temperature rise suffered from reduced animal performance likely mediated by an involvement of acid-base disturbances. The population comparison revealed a reduced heat tolerance of subarctic M. edulis in contrast to temperate ones. Apart from a lowered blood pH, moderate hypercapnia itself had only minor impacts. However, hypercapnia reduced heat tolerance and associated performance in H. araneus and M. edulis from high latitudes but not in temperate M. edulis. The findings indicate that populations living at high latitudes exhibit features of cold adaptation resulting in reduced thermal tolerance and resilience to environmental challenges, which needs to be considered in future projections. Doctoral or Postdoctoral Thesis Arctic Arctic Population Global warming Ocean acidification Subarctic White Sea Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic White Sea |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Hyas araneus Mytilus edulis global warming ocean acidification acid-base regulation thermal tolerance righting response oxygen consumption anaerobiosis metabolic depression NMR spectroscopy Artic North Sea White Sea 570 570 Life sciences biology ddc:570 |
spellingShingle |
Hyas araneus Mytilus edulis global warming ocean acidification acid-base regulation thermal tolerance righting response oxygen consumption anaerobiosis metabolic depression NMR spectroscopy Artic North Sea White Sea 570 570 Life sciences biology ddc:570 Zittier, Zora Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
topic_facet |
Hyas araneus Mytilus edulis global warming ocean acidification acid-base regulation thermal tolerance righting response oxygen consumption anaerobiosis metabolic depression NMR spectroscopy Artic North Sea White Sea 570 570 Life sciences biology ddc:570 |
description |
Ocean warming and acidification are two of the main factors driving current ecosystem changes. Yet, the combined impacts on marine organisms are insufficiently understood and the stress response may differ at the population level across climate gradients. This thesis investigates the combined effects of rising temperature and CO2 level on energy metabolism, acid-base regulation capacity and thermal tolerance of Mytilus edulis populations along a latitudinal cline and, in combination with exercise capacity, in the Arctic population of Hyas araneus. All organisms exposed to acute temperature rise suffered from reduced animal performance likely mediated by an involvement of acid-base disturbances. The population comparison revealed a reduced heat tolerance of subarctic M. edulis in contrast to temperate ones. Apart from a lowered blood pH, moderate hypercapnia itself had only minor impacts. However, hypercapnia reduced heat tolerance and associated performance in H. araneus and M. edulis from high latitudes but not in temperate M. edulis. The findings indicate that populations living at high latitudes exhibit features of cold adaptation resulting in reduced thermal tolerance and resilience to environmental challenges, which needs to be considered in future projections. |
author2 |
Pörtner, Hans-Otto Buck, Bela |
format |
Doctoral or Postdoctoral Thesis |
author |
Zittier, Zora |
author_facet |
Zittier, Zora |
author_sort |
Zittier, Zora |
title |
Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
title_short |
Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
title_full |
Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
title_fullStr |
Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
title_full_unstemmed |
Synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
title_sort |
synergistic impacts of ocean acidification and temperature rise on the physiology of marine invertebrates in a latitudinal cline |
publisher |
Universität Bremen |
publishDate |
2017 |
url |
https://media.suub.uni-bremen.de/handle/elib/1521 https://nbn-resolving.org/urn:nbn:de:gbv:46-00106863-13 |
geographic |
Arctic White Sea |
geographic_facet |
Arctic White Sea |
genre |
Arctic Arctic Population Global warming Ocean acidification Subarctic White Sea |
genre_facet |
Arctic Arctic Population Global warming Ocean acidification Subarctic White Sea |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/1521 urn:nbn:de:gbv:46-00106863-13 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766340675292364800 |