Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries
Abstract Ocean acidification and warming are expected to disproportionately affect high‐latitude calcifying species, such as crustose coralline algae. Clathromorphum nereostratum and Clathromorphum compactum are the primary builders of carbonate‐hardgrounds in the Aleutians Islands of Alaska and Nor...
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ftdoajarticles:oai:doaj.org/article:188e0356c6594573912a3f5d17713c04 2023-12-03T10:27:01+01:00 Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries Isaac Westfield John Gunnell Douglas B. Rasher Branwen Williams Justin B. Ries 2022-05-01T00:00:00Z https://doi.org/10.1029/2021GC009942 https://doaj.org/article/188e0356c6594573912a3f5d17713c04 EN eng Wiley https://doi.org/10.1029/2021GC009942 https://doaj.org/toc/1525-2027 1525-2027 doi:10.1029/2021GC009942 https://doaj.org/article/188e0356c6594573912a3f5d17713c04 Geochemistry, Geophysics, Geosystems, Vol 23, Iss 5, Pp n/a-n/a (2022) crustose coralline algae ocean acidification calcification climate change high latitude mesocosm Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.1029/2021GC009942 2023-11-05T01:35:59Z Abstract Ocean acidification and warming are expected to disproportionately affect high‐latitude calcifying species, such as crustose coralline algae. Clathromorphum nereostratum and Clathromorphum compactum are the primary builders of carbonate‐hardgrounds in the Aleutians Islands of Alaska and North Atlantic shelf, respectively, providing habitat and settlement substrates for a large number of species. We exposed wild‐collected specimens to 12 pCO2/T treatments (344–3322 μatm; 6.38–12.40°C) for 4 months in a factorially crossed, replicated laboratory experiment. Impacts of pCO2/T on algal calcification were quantified from linear extension and buoyant weight. Here we show that, despite belonging to the same genus, C. nereostratum exhibited greater sensitivity to thermal stress, while C. compactum exhibited greater sensitivity to pH stress. Furthermore, multivariate models of algal calcification derived from the experiment indicate that both C. nereostratum and C. compactum will commence net dissolution as early as 2120 and 2200 AD, respectively. Our results therefore indicate that near‐term climate change may lead to substantial degradation of these species and loss of the critical hardground habitats that they form. Article in Journal/Newspaper North Atlantic Ocean acidification Alaska Directory of Open Access Journals: DOAJ Articles Geochemistry, Geophysics, Geosystems 23 5 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
crustose coralline algae ocean acidification calcification climate change high latitude mesocosm Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 |
spellingShingle |
crustose coralline algae ocean acidification calcification climate change high latitude mesocosm Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 Isaac Westfield John Gunnell Douglas B. Rasher Branwen Williams Justin B. Ries Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries |
topic_facet |
crustose coralline algae ocean acidification calcification climate change high latitude mesocosm Geophysics. Cosmic physics QC801-809 Geology QE1-996.5 |
description |
Abstract Ocean acidification and warming are expected to disproportionately affect high‐latitude calcifying species, such as crustose coralline algae. Clathromorphum nereostratum and Clathromorphum compactum are the primary builders of carbonate‐hardgrounds in the Aleutians Islands of Alaska and North Atlantic shelf, respectively, providing habitat and settlement substrates for a large number of species. We exposed wild‐collected specimens to 12 pCO2/T treatments (344–3322 μatm; 6.38–12.40°C) for 4 months in a factorially crossed, replicated laboratory experiment. Impacts of pCO2/T on algal calcification were quantified from linear extension and buoyant weight. Here we show that, despite belonging to the same genus, C. nereostratum exhibited greater sensitivity to thermal stress, while C. compactum exhibited greater sensitivity to pH stress. Furthermore, multivariate models of algal calcification derived from the experiment indicate that both C. nereostratum and C. compactum will commence net dissolution as early as 2120 and 2200 AD, respectively. Our results therefore indicate that near‐term climate change may lead to substantial degradation of these species and loss of the critical hardground habitats that they form. |
format |
Article in Journal/Newspaper |
author |
Isaac Westfield John Gunnell Douglas B. Rasher Branwen Williams Justin B. Ries |
author_facet |
Isaac Westfield John Gunnell Douglas B. Rasher Branwen Williams Justin B. Ries |
author_sort |
Isaac Westfield |
title |
Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries |
title_short |
Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries |
title_full |
Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries |
title_fullStr |
Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries |
title_full_unstemmed |
Cessation of Hardground Accretion by the Cold‐Water Coralline Algae Clathromorphum Compactum and Clathromorphum Nereostratum Predicted Within Two Centuries |
title_sort |
cessation of hardground accretion by the cold‐water coralline algae clathromorphum compactum and clathromorphum nereostratum predicted within two centuries |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1029/2021GC009942 https://doaj.org/article/188e0356c6594573912a3f5d17713c04 |
genre |
North Atlantic Ocean acidification Alaska |
genre_facet |
North Atlantic Ocean acidification Alaska |
op_source |
Geochemistry, Geophysics, Geosystems, Vol 23, Iss 5, Pp n/a-n/a (2022) |
op_relation |
https://doi.org/10.1029/2021GC009942 https://doaj.org/toc/1525-2027 1525-2027 doi:10.1029/2021GC009942 https://doaj.org/article/188e0356c6594573912a3f5d17713c04 |
op_doi |
https://doi.org/10.1029/2021GC009942 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
23 |
container_issue |
5 |
_version_ |
1784276556006293504 |