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Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms by Adil Y. Al-Handal; Anders Torstensson; Angela Wulff is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract Continuous observations of Antarctic benthic diatoms are necessary to detect changes in species composition and biodiversity that may result from environmental changes. The present work provides a systematic list of benthic diatoms from Potter Cove (62.03°S 58.35°W) collected during summer 2015. The new findings are compared with observations made 12 years ago (summer 2003). In total, 80 taxa were found, similar to that encountered earlier, but 17 species (21% of the total species number) were not observed in 2003, and 26 species (31%) of those reported in 2003 did not appear in 2015. The dominant species in 2003 and 2015 was the large epipelic and cosmopolitan Gyrosigma fasciola. Most of the species either newly observed in the present study, or absent in the present study but observed previously, occurred either rarely or very rarely. Gyrosigma arcuatum and Pleurosigma diversestriatum were newly observed in 2015 and not previously reported from polar regions. This study provides systematic and ecological information on all taxa encountered and is illustrated with light microscopy and scanning electron microscopy (SEM) images. We emphasize that ice-inhabiting and other

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Author

Adil Y. Al-Handal; Anders Torstensson; Angela Wulff

Publisher

Walter de Gruyter GmbH

Published

2022

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)