Fig. 1: The Robert Island ice cap.
From: Surface darkening by abundant and diverse algae on an Antarctic ice cap

Imagery of bloom extent and in-situ community composition from the austral summer 2022/23 field sampling campaign. a Location of Robert Island (South Shetland Islands, north-west of the Antarctic Peninsula in the maritime Antarctic). b Drone photograph showing red snow algae and purple glacier algae blooming on the Robert Island ice cap on 8 February 2023. c Dino-Lite micrography of the glacial ice surface algal community taken on weathering crust near the ice cap margin on 18 February 2023. Scale bar ~50 µm, based on the average large dark-purple Ancylonema cell dimensions.