Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation
Abstract Global models predict that Antarctica has little suitable habitat for macroalgae and that Antarctic macroalgae therefore make a negligible contribution to global carbon fixation. However, coastal surveys are rare at southern polar latitudes (beyond 71° S), and here we report diverse and abu...
Published in: | Communications Earth & Environment |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Portfolio
2024
|
Subjects: | |
Online Access: | https://doi.org/10.1038/s43247-024-01362-2 https://doaj.org/article/ac2aaa4571c9433883f57da5c22c4907 |
id |
ftdoajarticles:oai:doaj.org/article:ac2aaa4571c9433883f57da5c22c4907 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ac2aaa4571c9433883f57da5c22c4907 2024-09-15T17:48:17+00:00 Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation Leigh W. Tait Caroline Chin Wendy Nelson Steve George Peter Marriott Richard L. O’Driscoll Miles Lamare Victoria S. Mills Vonda J. Cummings 2024-04-01T00:00:00Z https://doi.org/10.1038/s43247-024-01362-2 https://doaj.org/article/ac2aaa4571c9433883f57da5c22c4907 EN eng Nature Portfolio https://doi.org/10.1038/s43247-024-01362-2 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-024-01362-2 2662-4435 https://doaj.org/article/ac2aaa4571c9433883f57da5c22c4907 Communications Earth & Environment, Vol 5, Iss 1, Pp 1-9 (2024) Geology QE1-996.5 Environmental sciences GE1-350 article 2024 ftdoajarticles https://doi.org/10.1038/s43247-024-01362-2 2024-08-05T17:49:33Z Abstract Global models predict that Antarctica has little suitable habitat for macroalgae and that Antarctic macroalgae therefore make a negligible contribution to global carbon fixation. However, coastal surveys are rare at southern polar latitudes (beyond 71° S), and here we report diverse and abundant macroalgal assemblages in un-navigated coastal habitats of the Ross Sea from 71.5°–74.5° S. We found extensive macroalgal assemblages living at depths >70 m and specimens of crustose coralline algae as deep as 125 m. Using global light modelling and published photosynthetic rates we estimate that Antarctic macroalgae may contribute between 0.9–2.8 % of global macroalgal carbon fixation. Combined, this suggests that Antarctic macroalgae may be a greater contributor to global carbon fixation and possibly sequestration than previously thought. The vulnerability of these coastal environments to climate change, especially shifting sea ice extent and persistence, could influence Southern Ocean carbon fixation and rates of long-term sequestration. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Communications Earth & Environment 5 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 Environmental sciences GE1-350 |
spellingShingle |
Geology QE1-996.5 Environmental sciences GE1-350 Leigh W. Tait Caroline Chin Wendy Nelson Steve George Peter Marriott Richard L. O’Driscoll Miles Lamare Victoria S. Mills Vonda J. Cummings Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation |
topic_facet |
Geology QE1-996.5 Environmental sciences GE1-350 |
description |
Abstract Global models predict that Antarctica has little suitable habitat for macroalgae and that Antarctic macroalgae therefore make a negligible contribution to global carbon fixation. However, coastal surveys are rare at southern polar latitudes (beyond 71° S), and here we report diverse and abundant macroalgal assemblages in un-navigated coastal habitats of the Ross Sea from 71.5°–74.5° S. We found extensive macroalgal assemblages living at depths >70 m and specimens of crustose coralline algae as deep as 125 m. Using global light modelling and published photosynthetic rates we estimate that Antarctic macroalgae may contribute between 0.9–2.8 % of global macroalgal carbon fixation. Combined, this suggests that Antarctic macroalgae may be a greater contributor to global carbon fixation and possibly sequestration than previously thought. The vulnerability of these coastal environments to climate change, especially shifting sea ice extent and persistence, could influence Southern Ocean carbon fixation and rates of long-term sequestration. |
format |
Article in Journal/Newspaper |
author |
Leigh W. Tait Caroline Chin Wendy Nelson Steve George Peter Marriott Richard L. O’Driscoll Miles Lamare Victoria S. Mills Vonda J. Cummings |
author_facet |
Leigh W. Tait Caroline Chin Wendy Nelson Steve George Peter Marriott Richard L. O’Driscoll Miles Lamare Victoria S. Mills Vonda J. Cummings |
author_sort |
Leigh W. Tait |
title |
Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation |
title_short |
Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation |
title_full |
Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation |
title_fullStr |
Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation |
title_full_unstemmed |
Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation |
title_sort |
deep-living and diverse antarctic seaweeds as potentially important contributors to global carbon fixation |
publisher |
Nature Portfolio |
publishDate |
2024 |
url |
https://doi.org/10.1038/s43247-024-01362-2 https://doaj.org/article/ac2aaa4571c9433883f57da5c22c4907 |
genre |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Sea ice Southern Ocean |
op_source |
Communications Earth & Environment, Vol 5, Iss 1, Pp 1-9 (2024) |
op_relation |
https://doi.org/10.1038/s43247-024-01362-2 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-024-01362-2 2662-4435 https://doaj.org/article/ac2aaa4571c9433883f57da5c22c4907 |
op_doi |
https://doi.org/10.1038/s43247-024-01362-2 |
container_title |
Communications Earth & Environment |
container_volume |
5 |
container_issue |
1 |
_version_ |
1810289439874744320 |