Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient
Cold-water corals (CWC) are thought to be especially vulnerable to ocean acidification. However, in situ studies on the response of CWC to low aragonite saturation (Ωar) are still scarce. The Comau Fjord in southern Patagonia (Chile) is naturally stratified with vertical and horizontal pH gradients...
Main Authors: | , , , , , , , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2017
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/46077/ https://epic.awi.de/id/eprint/46077/1/Poster_ECRS2017_final.pdf https://hdl.handle.net/10013/epic.1529aef5-a48c-492d-a974-f161127ca8e4 https://hdl.handle.net/ |
id |
ftawi:oai:epic.awi.de:46077 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:46077 2023-05-15T17:51:08+02:00 Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient Beck, Kristina K. Nehrke, Gernot Steinhöfel, Grit Laudien, Jürgen Vossen, Kathrin Reichardt, Aurelia Happel, Lea Jung, E. Maria U. Häussermann, Vreni Richter, Claudio Schmidt, Gertraud M. 2017-12 application/pdf https://epic.awi.de/id/eprint/46077/ https://epic.awi.de/id/eprint/46077/1/Poster_ECRS2017_final.pdf https://hdl.handle.net/10013/epic.1529aef5-a48c-492d-a974-f161127ca8e4 https://hdl.handle.net/ unknown https://epic.awi.de/id/eprint/46077/1/Poster_ECRS2017_final.pdf https://hdl.handle.net/ Beck, K. K. orcid:0000-0003-3153-1341 , Nehrke, G. orcid:0000-0002-2851-3049 , Steinhöfel, G. , Laudien, J. orcid:0000-0003-2663-4821 , Vossen, K. , Reichardt, A. , Happel, L. , Jung, E. M. U. , Häussermann, V. , Richter, C. orcid:0000-0002-8182-6896 and Schmidt, G. M. (2017) Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient , European Coral Reef Symposium 2017, Oxford, United Kingdom, 13 December 2017 - 16 December 2017 . hdl:10013/epic.1529aef5-a48c-492d-a974-f161127ca8e4 EPIC3European Coral Reef Symposium 2017, Oxford, United Kingdom, 2017-12-13-2017-12-16 Conference notRev 2017 ftawi 2021-12-24T15:43:31Z Cold-water corals (CWC) are thought to be especially vulnerable to ocean acidification. However, in situ studies on the response of CWC to low aragonite saturation (Ωar) are still scarce. The Comau Fjord in southern Patagonia (Chile) is naturally stratified with vertical and horizontal pH gradients and high abundances of the cosmopolitan CWC Desmophyllum dianthus at Ωar ≤ 1. Previous studies reveal high growth rates of D. dianthus in summer but it is not known if skeletal growth and the ability of internal pH up-regulation show seasonal fluctuations due to changes in Ωar and/or food supply. In the present study, we compare D. dianthus skeletal carbonate accretion (buoyant weight technique) and linear extension rates (fluorescent microscopy) with the physico-chemical conditions in the water column (T, Ωar) in austral summer 2016/2017 and winter 2017. Corals were sampled at six stations at 20m water depth along the presumed horizontal pH gradient of Comau Fjord. Conference Object Ocean acidification Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Austral Patagonia |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Cold-water corals (CWC) are thought to be especially vulnerable to ocean acidification. However, in situ studies on the response of CWC to low aragonite saturation (Ωar) are still scarce. The Comau Fjord in southern Patagonia (Chile) is naturally stratified with vertical and horizontal pH gradients and high abundances of the cosmopolitan CWC Desmophyllum dianthus at Ωar ≤ 1. Previous studies reveal high growth rates of D. dianthus in summer but it is not known if skeletal growth and the ability of internal pH up-regulation show seasonal fluctuations due to changes in Ωar and/or food supply. In the present study, we compare D. dianthus skeletal carbonate accretion (buoyant weight technique) and linear extension rates (fluorescent microscopy) with the physico-chemical conditions in the water column (T, Ωar) in austral summer 2016/2017 and winter 2017. Corals were sampled at six stations at 20m water depth along the presumed horizontal pH gradient of Comau Fjord. |
format |
Conference Object |
author |
Beck, Kristina K. Nehrke, Gernot Steinhöfel, Grit Laudien, Jürgen Vossen, Kathrin Reichardt, Aurelia Happel, Lea Jung, E. Maria U. Häussermann, Vreni Richter, Claudio Schmidt, Gertraud M. |
spellingShingle |
Beck, Kristina K. Nehrke, Gernot Steinhöfel, Grit Laudien, Jürgen Vossen, Kathrin Reichardt, Aurelia Happel, Lea Jung, E. Maria U. Häussermann, Vreni Richter, Claudio Schmidt, Gertraud M. Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient |
author_facet |
Beck, Kristina K. Nehrke, Gernot Steinhöfel, Grit Laudien, Jürgen Vossen, Kathrin Reichardt, Aurelia Happel, Lea Jung, E. Maria U. Häussermann, Vreni Richter, Claudio Schmidt, Gertraud M. |
author_sort |
Beck, Kristina K. |
title |
Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient |
title_short |
Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient |
title_full |
Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient |
title_fullStr |
Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient |
title_full_unstemmed |
Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient |
title_sort |
seasonal growth of the cold-water coral desmophyllum dianthus along an in situ aragonite saturation gradient |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/46077/ https://epic.awi.de/id/eprint/46077/1/Poster_ECRS2017_final.pdf https://hdl.handle.net/10013/epic.1529aef5-a48c-492d-a974-f161127ca8e4 https://hdl.handle.net/ |
geographic |
Austral Patagonia |
geographic_facet |
Austral Patagonia |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
EPIC3European Coral Reef Symposium 2017, Oxford, United Kingdom, 2017-12-13-2017-12-16 |
op_relation |
https://epic.awi.de/id/eprint/46077/1/Poster_ECRS2017_final.pdf https://hdl.handle.net/ Beck, K. K. orcid:0000-0003-3153-1341 , Nehrke, G. orcid:0000-0002-2851-3049 , Steinhöfel, G. , Laudien, J. orcid:0000-0003-2663-4821 , Vossen, K. , Reichardt, A. , Happel, L. , Jung, E. M. U. , Häussermann, V. , Richter, C. orcid:0000-0002-8182-6896 and Schmidt, G. M. (2017) Seasonal growth of the cold-water coral Desmophyllum dianthus along an in situ aragonite saturation gradient , European Coral Reef Symposium 2017, Oxford, United Kingdom, 13 December 2017 - 16 December 2017 . hdl:10013/epic.1529aef5-a48c-492d-a974-f161127ca8e4 |
_version_ |
1766158190160904192 |