The use of sentinel-2 imagery to generate vegetations maps for the Northern Antarctic peninsula and offshore islands

FONSECA, ELIANA L. DA; SANTOS, EDVAN C. DOS; FIGUEIREDO, ANDERSON R. DE; SIMÕES, JEFFERSON C.

doi:10.1590/0001-3765202320230710

An. Acad. Bras. Ciênc.

2023

DOI: 10.1590/0001-3765202320230710

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The use of sentinel-2 imagery to generate vegetations maps for the Northern Antarctic peninsula and offshore islands

ELIANA L. DA FONSECA,

EDVAN C. DOS SANTOS,

ANDERSON R. DE FIGUEIREDO

et al.

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2024

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A satellite-derived baseline of photosynthetic life across Antarctica

Walshaw,

Gray,

Fretwell

et al. 2024

Nat. Geosci.

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Terrestrial vegetation communities across Antarctica are characteristically sparse, presenting a challenge for mapping their occurrence using remote sensing at the continent scale. At present there is no continent-wide baseline record of Antarctic vegetation, and large-scale area estimates remain unquantified. With local vegetation distribution shifts now apparent and further predicted in response to environmental change across Antarctica, it is critical to establish a baseline to document these changes. Here we present a 10 m-resolution map of photosynthetic life in terrestrial and cryospheric habitats across the entire Antarctic continent, maritime archipelagos and islands south of 60° S. Using Sentinel-2 imagery (2017–2023) and spectral indices, we detected terrestrial green vegetation (vascular plants, bryophytes, green algae) and lichens across ice-free areas, and cryospheric green snow algae across coastal snowpacks. The detected vegetation occupies a total area of 44.2 km2, with over half contained in the South Shetland Islands, altogether contributing just 0.12% of the total ice-free area included in the analysis. Due to methodological constraints, dark-coloured lichens and cyanobacterial mats were excluded from the study. This vegetation map improves the geospatial data available for vegetation across Antarctica, and provides a tool for future conservation planning and large-scale biogeographic assessments.

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A satellite-derived baseline of photosynthetic life across Antarctica

Walshaw,

Gray,

Fretwell

et al. 2024

Nat. Geosci.

View full text Add to dashboard Cite

show abstract

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The use of sentinel-2 imagery to generate vegetations maps for the Northern Antarctic peninsula and offshore islands

Cited by 1 publication

References 25 publications

A satellite-derived baseline of photosynthetic life across Antarctica

A satellite-derived baseline of photosynthetic life across Antarctica

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