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dc.contributor.author
Deregibus, Dolores
dc.contributor.author
Campana, Gabriela Laura
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Neder, Camila
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Barnes, David K.A.
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Zacher, Katharina
dc.contributor.author
Piscicelli, Juan Manuel
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Jerosch, Kerstin
dc.contributor.author
Quartino, Maria Liliana
dc.date.available
2023-12-27T14:51:22Z
dc.date.issued
2023-07
dc.identifier.citation
Deregibus, Dolores; Campana, Gabriela Laura; Neder, Camila; Barnes, David K.A.; Zacher, Katharina; et al.; Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat; Elsevier; Marine Environmental Research; 189; 106056; 7-2023; 1-12
dc.identifier.issn
0141-1136
dc.identifier.uri
http://hdl.handle.net/11336/221655
dc.description.abstract
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 and refuge to fauna, and capturing and storing more carbon.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
BENTHOS
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BIOMASS
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CLIMATE CHANGE
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COLONIZATION
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GLACIER RETREAT
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Biología Marina, Limnología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Potential macroalgal expansion and blue carbon gains with northern Antarctic Peninsula glacial retreat
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-12-27T12:23:48Z
dc.journal.volume
189
dc.journal.number
106056
dc.journal.pagination
1-12
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Deregibus, Dolores. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
dc.description.fil
Fil: Campana, Gabriela Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
dc.description.fil
Fil: Neder, Camila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina. Universidad Nacional de Córdoba. Facultad de Cs.exactas Fisicas y Naturales. Departamento de Diversidad Biologica y Ecologica. Cat.de Ecologia Marina; Argentina. Helmholtz Centre for Polar and Marine Research; Alemania
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Fil: Barnes, David K.A.. British Antarctic Survey; Reino Unido
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Fil: Zacher, Katharina. Helmholtz Centre for Polar and Marine Research; Alemania
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Fil: Piscicelli, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia". Estación Hidrobiológica de Puerto Quequén (sede Quequén); Argentina
dc.description.fil
Fil: Jerosch, Kerstin. Helmholtz Centre for Polar and Marine Research; Alemania
dc.description.fil
Fil: Quartino, Maria Liliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
dc.journal.title
Marine Environmental Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0141113623001848
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.marenvres.2023.106056
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