In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region
Cold-water corals (CWC) can be found throughout a wide range of latitudes (79°N–78°S). Since they lack the photosymbiosis known for most of their tropical counterparts, they may thrive below the euphotic zone. Consequently, their growth predominantly depends on the prevalent environmental conditions...
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ftawi:oai:epic.awi.de:55455 2024-09-15T18:18:03+00:00 In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region Rossbach, Susann Rossbach, Felix Ivo Häussermann, Verena Försterra, Günter Laudien, Jürgen 2021-12-24 https://epic.awi.de/id/eprint/55455/ https://hdl.handle.net/10013/epic.e4cb8342-c6a3-4c90-837f-924a12006ccb unknown Frontiers Media S.A. Rossbach, S. , Rossbach, F. I. , Häussermann, V. , Försterra, G. and Laudien, J. orcid:0000-0003-2663-4821 (2021) In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region , Frontiers in Marine Science, 8 (757702) . doi:10.3389/fmars.2021.757702 <https://doi.org/10.3389/fmars.2021.757702> , hdl:10013/epic.e4cb8342-c6a3-4c90-837f-924a12006ccb EPIC3Frontiers in Marine Science, Frontiers Media S.A., 8(757702), ISSN: 22967745 Article isiRev 2021 ftawi https://doi.org/10.3389/fmars.2021.757702 2024-06-24T04:27:29Z Cold-water corals (CWC) can be found throughout a wide range of latitudes (79°N–78°S). Since they lack the photosymbiosis known for most of their tropical counterparts, they may thrive below the euphotic zone. Consequently, their growth predominantly depends on the prevalent environmental conditions, such as general food availability, seawater chemistry, currents, and temperature. Most CWC communities live in regions that will face CaCO3 undersaturation by the end of the century and are thus predicted to be threatened by ocean acidification (OA). This scenario is especially true for species inhabiting the Chilean fjord system, where present-day carbonate water chemistry already reaches values predicted for the end of the century. To understand the effect of the prevailing environmental conditions on the biomineralization of the CWC Tethocyathus endesa, a solitary scleractinian widely distributed in the Chilean Comau Fjord, a 12-month in situ experiment was conducted. The in situ skeletal growth of the test corals was assessed at two sites using the buoyant weight method. Sites were chosen to cover the naturally present carbonate chemistry gradient, with pH levels ranging between 7.90 ± 0.01 (mean ± SD) and 7.70 ± 0.02, and an aragonite saturation (Ωarag) between 1.47 ± 0.03 and 0.98 ± 0.05. The findings of this study provide one of the first in situ growth assessments of a solitary CWC species, with a skeletal mass increase of 46 ± 28 mg per year and individual, at a rate of 0.03 ± 0.02% day. They also indicate that, although the local seawater chemistry can be assumed to be unfavorable for calcification, growth rates of T. endesa are comparable to other cold-water scleractinians in less corrosive waters (e.g., Lophelia pertusa in the Mediterranean Sea). Article in Journal/Newspaper Lophelia pertusa Ocean acidification Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Frontiers in Marine Science 8 |
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Open Polar |
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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) can be found throughout a wide range of latitudes (79°N–78°S). Since they lack the photosymbiosis known for most of their tropical counterparts, they may thrive below the euphotic zone. Consequently, their growth predominantly depends on the prevalent environmental conditions, such as general food availability, seawater chemistry, currents, and temperature. Most CWC communities live in regions that will face CaCO3 undersaturation by the end of the century and are thus predicted to be threatened by ocean acidification (OA). This scenario is especially true for species inhabiting the Chilean fjord system, where present-day carbonate water chemistry already reaches values predicted for the end of the century. To understand the effect of the prevailing environmental conditions on the biomineralization of the CWC Tethocyathus endesa, a solitary scleractinian widely distributed in the Chilean Comau Fjord, a 12-month in situ experiment was conducted. The in situ skeletal growth of the test corals was assessed at two sites using the buoyant weight method. Sites were chosen to cover the naturally present carbonate chemistry gradient, with pH levels ranging between 7.90 ± 0.01 (mean ± SD) and 7.70 ± 0.02, and an aragonite saturation (Ωarag) between 1.47 ± 0.03 and 0.98 ± 0.05. The findings of this study provide one of the first in situ growth assessments of a solitary CWC species, with a skeletal mass increase of 46 ± 28 mg per year and individual, at a rate of 0.03 ± 0.02% day. They also indicate that, although the local seawater chemistry can be assumed to be unfavorable for calcification, growth rates of T. endesa are comparable to other cold-water scleractinians in less corrosive waters (e.g., Lophelia pertusa in the Mediterranean Sea). |
format |
Article in Journal/Newspaper |
author |
Rossbach, Susann Rossbach, Felix Ivo Häussermann, Verena Försterra, Günter Laudien, Jürgen |
spellingShingle |
Rossbach, Susann Rossbach, Felix Ivo Häussermann, Verena Försterra, Günter Laudien, Jürgen In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region |
author_facet |
Rossbach, Susann Rossbach, Felix Ivo Häussermann, Verena Försterra, Günter Laudien, Jürgen |
author_sort |
Rossbach, Susann |
title |
In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region |
title_short |
In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region |
title_full |
In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region |
title_fullStr |
In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region |
title_full_unstemmed |
In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region |
title_sort |
in situ skeletal growth rates of the solitary cold-water coral tethocyathus endesa from the chilean fjord region |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55455/ https://hdl.handle.net/10013/epic.e4cb8342-c6a3-4c90-837f-924a12006ccb |
genre |
Lophelia pertusa Ocean acidification |
genre_facet |
Lophelia pertusa Ocean acidification |
op_source |
EPIC3Frontiers in Marine Science, Frontiers Media S.A., 8(757702), ISSN: 22967745 |
op_relation |
Rossbach, S. , Rossbach, F. I. , Häussermann, V. , Försterra, G. and Laudien, J. orcid:0000-0003-2663-4821 (2021) In situ Skeletal Growth Rates of the Solitary Cold-Water Coral Tethocyathus endesa From the Chilean Fjord Region , Frontiers in Marine Science, 8 (757702) . doi:10.3389/fmars.2021.757702 <https://doi.org/10.3389/fmars.2021.757702> , hdl:10013/epic.e4cb8342-c6a3-4c90-837f-924a12006ccb |
op_doi |
https://doi.org/10.3389/fmars.2021.757702 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1810456191372886016 |