Cold-water corals in a changing ocean: Effects on their physiological performance
Cold-water corals (CWCs) are abundant worldwide, with their distribution mainly determined by physico-chemical factors and food availability. Despite predominantly occurring in deep waters, CWC habitats are also affected by the impacts of global climate change, such as ocean acidification and warmin...
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Universität Bremen
2022
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/6326 2023-05-15T17:50:56+02:00 Cold-water corals in a changing ocean: Effects on their physiological performance Beck, Kristina Richter, Claudio Wall, Marlene Orejas Saco del Valle, Covadonga Carreiro-Silva, Marina 2022-09-26 application/pdf https://media.suub.uni-bremen.de/handle/elib/6326 https://doi.org/10.26092/elib/1888 https://nbn-resolving.org/urn:nbn:de:gbv:46-elib63266 eng eng Universität Bremen Fachbereich 02: Biologie/Chemie (FB 02) https://media.suub.uni-bremen.de/handle/elib/6326 https://doi.org/10.26092/elib/1888 doi:10.26092/elib/1888 urn:nbn:de:gbv:46-elib63266 info:eu-repo/semantics/openAccess CC BY 4.0 (Attribution) https://creativecommons.org/licenses/by/4.0/ CC-BY cold-water coral climate change ocean acidification warming early life stages physiology growth calcification respiration energy reserves fatty acids lipid classes 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2022 ftsubbremen https://doi.org/10.26092/elib/1888 2023-01-08T23:09:15Z Cold-water corals (CWCs) are abundant worldwide, with their distribution mainly determined by physico-chemical factors and food availability. Despite predominantly occurring in deep waters, CWC habitats are also affected by the impacts of global climate change, such as ocean acidification and warming as well as reduced primary productivity and oxygen concentration. Several previous studies have already investigated the effects of environmental changes on different CWCs species, but mainly focused on laboratory experiments under controlled conditions of a single parameter and the study of adult corals. To date, there is limited information on the effects of environmental changes on different life stages of CWCs, the combined effect of multiple factors, the impact of variable rather than constant conditions and the importance of food availability for the resilience of CWCs to environmental changes. Therefore, this thesis aimed to better understand the physiological response of CWCs to changes in their environment. In both aquarium and in situ experiments, I examined how CWCs cope with changes in single and several combined factors under stable and variable environmental conditions, taking into account the response of different life stages and the influence of differences in food availability. For this purpose, I have investigated the short- and long-term physiological response of three life stages of the CWC Caryophyllia huinayensis to different conditions of aragonite saturation (Ωarag), temperature and feeding in an aquarium experiment, all as individual factors as well as their interactions (manuscript 1). Aragonite undersaturation did not affect the corals, but elevated temperature and reduced feeding showed a clear negative effect. Juvenile and adult corals responded differently to temperature changes and reduced food supply as calcification rates of early juveniles were most affected, while adult corals showed highest mortality rates. The clear feeding effect and the delayed response of corals after more ... Doctoral or Postdoctoral Thesis Ocean acidification Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
cold-water coral climate change ocean acidification warming early life stages physiology growth calcification respiration energy reserves fatty acids lipid classes 570 570 Life sciences biology ddc:570 |
spellingShingle |
cold-water coral climate change ocean acidification warming early life stages physiology growth calcification respiration energy reserves fatty acids lipid classes 570 570 Life sciences biology ddc:570 Beck, Kristina Cold-water corals in a changing ocean: Effects on their physiological performance |
topic_facet |
cold-water coral climate change ocean acidification warming early life stages physiology growth calcification respiration energy reserves fatty acids lipid classes 570 570 Life sciences biology ddc:570 |
description |
Cold-water corals (CWCs) are abundant worldwide, with their distribution mainly determined by physico-chemical factors and food availability. Despite predominantly occurring in deep waters, CWC habitats are also affected by the impacts of global climate change, such as ocean acidification and warming as well as reduced primary productivity and oxygen concentration. Several previous studies have already investigated the effects of environmental changes on different CWCs species, but mainly focused on laboratory experiments under controlled conditions of a single parameter and the study of adult corals. To date, there is limited information on the effects of environmental changes on different life stages of CWCs, the combined effect of multiple factors, the impact of variable rather than constant conditions and the importance of food availability for the resilience of CWCs to environmental changes. Therefore, this thesis aimed to better understand the physiological response of CWCs to changes in their environment. In both aquarium and in situ experiments, I examined how CWCs cope with changes in single and several combined factors under stable and variable environmental conditions, taking into account the response of different life stages and the influence of differences in food availability. For this purpose, I have investigated the short- and long-term physiological response of three life stages of the CWC Caryophyllia huinayensis to different conditions of aragonite saturation (Ωarag), temperature and feeding in an aquarium experiment, all as individual factors as well as their interactions (manuscript 1). Aragonite undersaturation did not affect the corals, but elevated temperature and reduced feeding showed a clear negative effect. Juvenile and adult corals responded differently to temperature changes and reduced food supply as calcification rates of early juveniles were most affected, while adult corals showed highest mortality rates. The clear feeding effect and the delayed response of corals after more ... |
author2 |
Richter, Claudio Wall, Marlene Orejas Saco del Valle, Covadonga Carreiro-Silva, Marina |
format |
Doctoral or Postdoctoral Thesis |
author |
Beck, Kristina |
author_facet |
Beck, Kristina |
author_sort |
Beck, Kristina |
title |
Cold-water corals in a changing ocean: Effects on their physiological performance |
title_short |
Cold-water corals in a changing ocean: Effects on their physiological performance |
title_full |
Cold-water corals in a changing ocean: Effects on their physiological performance |
title_fullStr |
Cold-water corals in a changing ocean: Effects on their physiological performance |
title_full_unstemmed |
Cold-water corals in a changing ocean: Effects on their physiological performance |
title_sort |
cold-water corals in a changing ocean: effects on their physiological performance |
publisher |
Universität Bremen |
publishDate |
2022 |
url |
https://media.suub.uni-bremen.de/handle/elib/6326 https://doi.org/10.26092/elib/1888 https://nbn-resolving.org/urn:nbn:de:gbv:46-elib63266 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/6326 https://doi.org/10.26092/elib/1888 doi:10.26092/elib/1888 urn:nbn:de:gbv:46-elib63266 |
op_rights |
info:eu-repo/semantics/openAccess CC BY 4.0 (Attribution) https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.26092/elib/1888 |
_version_ |
1766157884643606528 |