Antarctica’s Looming Threat • The Revelator - Deepstash

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Exploring Antarctica's Fragile Ecosystem

Exploring Antarctica's Fragile Ecosystem

  • Antarctica, a pristine wilderness attracting scientists and tourists alike, faces an unexpected threat – invasive species.
  • This peril stems from the increasing human activity in the region, posing a risk to the unique ecology and wildlife.


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Current Scenario

Current Scenario

  • While 11 nonnative invertebrates have established in warmer regions, the coastal waters have seen a minor influx of nonnative species, such as Chilean mussels and crabs.
  • However, scientists emphasize the importance of vigilance to prevent these newcomers from forming permanent populations.


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Human Activity and Climate Change

Human Activity and Climate Change

  • Human traffic, including tourists, fishing boats, and research vessels, is identified as a primary source of potential invaders.
  • The number of ships in the area has significantly risen, with over 180 involved in more than 500 voyages between 2017 and 2018.
  • Additionally, climate change is compromising Antarctica's natural defenses, with warming waters weakening the once formidable barriers.


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Growing Risks and Impact on Ecosystem

Growing Risks and Impact on Ecosystem

  • The arrival of non-native marine species could have catastrophic effects on the Antarctic food web.
  • Invasive species like mytilid bivalves may outcompete native species, causing declines in their abundances.
  • Voracious predators like Northern Pacific seastars and crabs, absent for millions of years, pose additional concerns.


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Mitigating the Threat

Mitigating the Threat

Efforts to stave off invaders include:

  • utilizing underwater drones and submersibles for research,
  • employing machine learning to analyze collected data,
  • and leveraging environmental DNA to detect the presence of nonnative species.

Biosecurity measures, particularly in invasion hotspots like the Antarctic Peninsula and South Shetland Islands, are crucial.


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“For now, Antarctica and the Southern Ocean remain the least invaded marine regions on the planet and represent humanity’s last chance to demonstrate that we can manage and mitigate the risks of invasive species at a continental scale”



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Absurdist. Failed musician. Successful pessimist. Gamer.


Ocean waters warmed by climate change could open the door for marine invasive species in one of the world’s most pristine ecosystems.


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