![\"Antarctic](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/07\/GettyImages-1392114742.jpg\")
Signy Island is located within the South Orkney Islands. The British Antarctic Survey runs a small summer-only research facility on Signy Island, where Emily was based when collecting samples – PeterHermesFurian\/Getty Images<\/p>\n
\u201cThese landscapes are changing fast, and Arctic and alpine glaciers might be some of the first habitats lost completely to climate change,\u201d explains Broadwell.<\/p>\n
During spring and summer melt seasons, extensive algal blooms form on Signy Island. The snow and glacier algae act as ecosystem engineers<\/a>: algae can capture significant amounts of carbon through the process of photosynthesis.<\/p>\n However, algal blooms can exacerbate snow and ice melt. By darkening the surface of the snow and ice, less sunlight is reflected and is instead absorbed, melting the ice and releasing sequestered carbon.<\/p>\n Snow and glacier algae face habitat loss as global temperatures continue to rise, which means it\u2019s vital for scientists to further understand these organisms \u2013 particularly as many of them are likely to be endemic to these isolated regions.<\/p>\n Over six weeks of the austral summer of 2024, snow and ice samples were collected from various locations on Signy Island. They were then transported back to the University of Bristol, UK, for DNA extraction.<\/p>\n Antarctic algae<\/p>\n The study, which was published in the journal ISME Communications<\/a>, uncovered a surprisingly rich and habitat-specific diversity of snow and glacier algal species.<\/p>\n \u201cOur work identified a novel form of the glacier alga called Ancylonema\u00a0that has never been recorded in the Northern Hemisphere,\u201d says Broadwell.<\/p>\n \u201cDifferent ice surfaces and snowpacks also hosted unique algal communities. Notably, we found red snow algae dominating the ice cap, where\u00a0Ancylonema\u00a0glacier algae would normally be expected to prevail.\u201d<\/p>\n These findings indicate that Antarctic glacier ecosystems won\u2019t respond uniformly to climate change, as had been previously assumed, and likely won\u2019t follow the same trajectory as more well-studied glaciers such as the Greenland Ice Sheet<\/a>. \u00a0<\/p>\n \u201cThe hidden diversity discovered in the snow and glacier algae from this remote Antarctic Island highlights how we need more expeditions to sample further, in particular around the Southern Hemisphere,\u201d added Chris Williamson, the study\u2019s co-author, and associate professor in polar microbiology at the University of Bristol.<\/p>\n \u201cThere is much more potential to expand our knowledge on the diversity and distribution of these unique microbes.\u201d<\/p>\n![\"Snowbloom](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2026\/07\/Snowbloom-and-seals-scaled.jpg\")
Coastal red and green snow algal bloom at Cummings Cove on Signy Island. Signy Island is home to significant populations of seabirds, as well as penguins (including chinstrap and Ad\u00e9lie), Antarctic fur seals and Weddell seals – Emily Broadwell<\/p>\n