Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat
The West Antarctic Peninsula (WAP) is a hotspot of physical climate change, especially glacial retreat, particularly in its northern South Shetland Islands (SSI) region. Along coastlines, this process is opening up new ice-free areas, for colonization by a high biodiversity of flora and fauna. At Po...
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Elsevier
2023
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ftnerc:oai:nora.nerc.ac.uk:535064 2024-06-02T07:56:02+00:00 Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat Deregibus, Dolores Campana, Gabriela L. Neder, Camila Barnes, David K.A. Zacher, Katharina Piscicelli, Juan Manuel Jerosch, Kerstin Quartino, María Liliana 2023-07 text http://nora.nerc.ac.uk/id/eprint/535064/ https://nora.nerc.ac.uk/id/eprint/535064/1/1-s2.0-S0141113623001848-main.pdf https://www.sciencedirect.com/science/article/abs/pii/S0141113623001848 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/535064/1/1-s2.0-S0141113623001848-main.pdf Deregibus, Dolores; Campana, Gabriela L.; Neder, Camila; Barnes, David K.A. orcid:0000-0002-9076-7867 Zacher, Katharina; Piscicelli, Juan Manuel; Jerosch, Kerstin; Quartino, María Liliana. 2023 Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat. Marine Environmental Research, 189, 106056. 12, pp. https://doi.org/10.1016/j.marenvres.2023.106056 <https://doi.org/10.1016/j.marenvres.2023.106056> cc_by_nc_nd_4 Publication - Article PeerReviewed 2023 ftnerc https://doi.org/10.1016/j.marenvres.2023.106056 2024-05-07T23:32:29Z The West Antarctic Peninsula (WAP) is a hotspot of physical climate change, especially glacial retreat, particularly in its northern South Shetland Islands (SSI) region. Along coastlines, this process is opening up new ice-free areas, for colonization by a high biodiversity of flora and fauna. At Potter Cove, in the SSI (Isla 25 de Mayo/King George Island), Antarctica, colonization by macroalgae was studied in two newly ice-free areas, a low glacier influence area (LGI), and a high glacier influence area (HGI) differing in the presence of sediment run-off and light penetration, which are driven by levels of glacial influence. We installed artificial substrates (tiles) at 5 m depth to analyze benthic algal colonization and succession for four years (2010–2014). Photosynthetic active radiation (PAR, 400–700 nm), temperature, salinity, and turbidity were monitored at both sites in spring and summer. The turbidity and the light attenuation (Kd) were significantly lower at LGI than at HGI. All tiles were colonized by benthic algae, differing in species identity and successional patterns between areas, and with a significantly higher richness at LGI than HGI in the last year of the experiment. We scaled up a quadrat survey on the natural substrate to estimate benthic algal colonization in newly deglaciated areas across Potter Cove. Warming in recent decades has exposed much new habitat, with macroalgae making up an important part of colonist communities ‘chasing’ such glacier retreat. Our estimation of algal colonization in newly ice-free areas shows an expansion of ∼0.005–0.012 km2 with a carbon standing stock of ∼0.2–0.4 C tons, per year. Life moving into new space in such emerging fjords has the potential to be key for new carbon sinks and export. In sustained climate change scenarios, we expect that the processes of colonization and expansion of benthic assemblages will continue and generate significant transformations in Antarctic coastal ecosystems by increasing primary production, providing new structures, food ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Isla 25 de Mayo King George Island South Shetland Islands Natural Environment Research Council: NERC Open Research Archive 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Antarctic Antarctic Peninsula isla 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) King George Island Potter Cove South Shetland Islands Marine Environmental Research 189 106056 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The West Antarctic Peninsula (WAP) is a hotspot of physical climate change, especially glacial retreat, particularly in its northern South Shetland Islands (SSI) region. Along coastlines, this process is opening up new ice-free areas, for colonization by a high biodiversity of flora and fauna. At Potter Cove, in the SSI (Isla 25 de Mayo/King George Island), Antarctica, colonization by macroalgae was studied in two newly ice-free areas, a low glacier influence area (LGI), and a high glacier influence area (HGI) differing in the presence of sediment run-off and light penetration, which are driven by levels of glacial influence. We installed artificial substrates (tiles) at 5 m depth to analyze benthic algal colonization and succession for four years (2010–2014). Photosynthetic active radiation (PAR, 400–700 nm), temperature, salinity, and turbidity were monitored at both sites in spring and summer. The turbidity and the light attenuation (Kd) were significantly lower at LGI than at HGI. All tiles were colonized by benthic algae, differing in species identity and successional patterns between areas, and with a significantly higher richness at LGI than HGI in the last year of the experiment. We scaled up a quadrat survey on the natural substrate to estimate benthic algal colonization in newly deglaciated areas across Potter Cove. Warming in recent decades has exposed much new habitat, with macroalgae making up an important part of colonist communities ‘chasing’ such glacier retreat. Our estimation of algal colonization in newly ice-free areas shows an expansion of ∼0.005–0.012 km2 with a carbon standing stock of ∼0.2–0.4 C tons, per year. Life moving into new space in such emerging fjords has the potential to be key for new carbon sinks and export. In sustained climate change scenarios, we expect that the processes of colonization and expansion of benthic assemblages will continue and generate significant transformations in Antarctic coastal ecosystems by increasing primary production, providing new structures, food ... |
format |
Article in Journal/Newspaper |
author |
Deregibus, Dolores Campana, Gabriela L. Neder, Camila Barnes, David K.A. Zacher, Katharina Piscicelli, Juan Manuel Jerosch, Kerstin Quartino, María Liliana |
spellingShingle |
Deregibus, Dolores Campana, Gabriela L. Neder, Camila Barnes, David K.A. Zacher, Katharina Piscicelli, Juan Manuel Jerosch, Kerstin Quartino, María Liliana Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat |
author_facet |
Deregibus, Dolores Campana, Gabriela L. Neder, Camila Barnes, David K.A. Zacher, Katharina Piscicelli, Juan Manuel Jerosch, Kerstin Quartino, María Liliana |
author_sort |
Deregibus, Dolores |
title |
Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat |
title_short |
Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat |
title_full |
Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat |
title_fullStr |
Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat |
title_full_unstemmed |
Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat |
title_sort |
potential macroalgal expansion and blue carbon gains with northern antarctic peninsula glacial retreat |
publisher |
Elsevier |
publishDate |
2023 |
url |
http://nora.nerc.ac.uk/id/eprint/535064/ https://nora.nerc.ac.uk/id/eprint/535064/1/1-s2.0-S0141113623001848-main.pdf https://www.sciencedirect.com/science/article/abs/pii/S0141113623001848 |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.000,-58.000,-62.083,-62.083) |
geographic |
25 de Mayo Antarctic Antarctic Peninsula isla 25 de Mayo King George Island Potter Cove South Shetland Islands |
geographic_facet |
25 de Mayo Antarctic Antarctic Peninsula isla 25 de Mayo King George Island Potter Cove South Shetland Islands |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Isla 25 de Mayo King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Isla 25 de Mayo King George Island South Shetland Islands |
op_relation |
https://nora.nerc.ac.uk/id/eprint/535064/1/1-s2.0-S0141113623001848-main.pdf Deregibus, Dolores; Campana, Gabriela L.; Neder, Camila; Barnes, David K.A. orcid:0000-0002-9076-7867 Zacher, Katharina; Piscicelli, Juan Manuel; Jerosch, Kerstin; Quartino, María Liliana. 2023 Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat. Marine Environmental Research, 189, 106056. 12, pp. https://doi.org/10.1016/j.marenvres.2023.106056 <https://doi.org/10.1016/j.marenvres.2023.106056> |
op_rights |
cc_by_nc_nd_4 |
op_doi |
https://doi.org/10.1016/j.marenvres.2023.106056 |
container_title |
Marine Environmental Research |
container_volume |
189 |
container_start_page |
106056 |
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1800753004539805696 |