Parasitism on a salmon farm in Iceland
The business model of “salmon farming” is heavily criticized by regular reports of parasite outbreaks and their impact on the environment.
Adélie penguins lead mercury survey around Antarctica
Produced by human and volcanic activity or melting ice, mercury concentrations are increasing in Antarctic food chains, particularly in the Ross Sea, according to a study by Fanny Cusset and her colleagues.
Searching for the origin of the dog sled
The mystery of the arrival of dog sleds in Greenland is set to be solved by Emma Vitale who, in a recently published study, has defined a methodology to improve the interpretation of items found during archaeological digs linked to this mode of transport.
Orcas’ contaminant levels depend on their diet
A new study shows that the level of contamination in orcas depends mainly on which prey they specialise in, rather than the region in which they live.
Bird Island fur seals down 7% since 2009
A lack of krill is thought to be the main reason for the decline in fur seals observed in the north of South Georgia. Researchers are concerned that this symptom could spread to the archipelago and the Southern Ocean.
Loss of sea ice negatively impacts breastfeeding of cubs
Due to the increased time spent on land fasting, female polar bears have difficulty producing milk for their cubs, study shows.
Lacking beds in McMurdo leads to canceling research projects
In Antarctica, 67 research projects were canceled or cut back at US McMurdo Station due to a lack of beds for researchers.
Cruise ships, a potential observation platform in Antarctica?
Cruise ships in Antarctica represent a non-negligible scientific platform for monitoring bird communities, according to British and Norwegian scientists who experimented with this mode of observation between 2019 and 2020.
Fur seals and fishing boats in the Falklands – a close relationship under study
Fewer fish and more otaries could be behind the growing number of fur seals dying as a result of collisions or drowning in fishing nets. The South Atlantic Institute for Environmental Research has published the initial results of its scientific investigation in the hope of improving fisheries management.
Giants to watch over Antarctica
Like the albatross, the giant petrel could be used to monitor fisheries in the Antarctic. Opportunistic, its home range allows it to cover a vast territory.
A beetle introduced in Kerguelen, perpetually voracious
A beetle introduced to Kerguelen, Merizodus soledadinus, is so active that it is thought to be capable of eradicating the archipelago’s native flies. Scientists at the French Polar Institute have discovered that its predatory activity does not diminish as its population grows and its prey diminishes.
Zooplankton production may diminish under the ice pack
The results of a study published in Nature suggest that more attention should be paid to Arctic zooplankton. Sea ice retreat could reduce the productivity of these invertebrates that are at the base of the food chain.
Increased risk of avian influenza H5 in the Falklands
The arrival of spring in the southern hemisphere is raising concerns about the resurgence of the H5N1 virus and the risk of it entering the Antarctic.
Does it pay for a penguin to be a Major General?
The Royal Norwegian Guard and Band visited the king penguin Sir Nils Olav III, whom they promoted to Major General, at Edinburgh Zoo last week, as part of their performance at the Edinburgh Military Tattoo 2023.
Tiny teeth point to rare paleo Arctic mammal
A team of paleontologists has excavated the tooth of an extinct mammal, a contemporary of the Arctic dinosaurs, from a Cretaceous coniferous forest.
More protection from enemies despite neighbor dispute in king penguins
Since more eyes detect aggressors earlier, king penguins are better protected in very dense groups, despite more hostilities with neighbors.
Krill – “The true cost of sustainable fishing should include investment in research”
Krill is fished by five countries in Antarctica, and other countries could have their sights on this enormous source of protein. Philip N. Philip N. Trathan, a biologist with 30 years’ experience in international committees dealing with this subject, shows how to maintain the principle of precaution, the cornerstone of this activity.
A sea lily snatches a ride on a crab in the Svalbard fjords
From the deck of their magnificent sailing boat, in a breathtaking natural scenery, researchers are studying an opportunistic sea lily that hitchhikes on the back of a crab.
1,300 dead penguins on Uruguay’s coastline
Dozens of dead Magellanic penguins have been found daily on Uruguay’s beaches since the beginning of this month. It is estimated that a total of up to 2,000 animals could wash up.
World largest gadfly petrel is endangered by cats and rats
On Mayes Island in the Kerguelen archipelago, white-headed petrels fall into two categories: those that breed every year and those that only return every other year.
Encouraging signs of belugas returning to the Kara Sea
Satellite imagery of the Russian coastline in summer 2016 enabled scientists to identify beluga whale populations in the far south of the Kara Sea.
Study says recovery of Cook Inlet belugas is seen as economically valuable
Alaska’s distinct — and endangered — beluga whale population faces numerous threats to its recovery. A lack of public support is not one of them
Shy or bold – Wandering albatrosses have personality and strategies
Albatrosses have different personalities, and these “characters” influence their fishing strategies, which are intimately linked to wind strength.
South Orkneys fertilized by a midge larva
The soil of an island, not far from the Antarctic Peninsula, is the scene of a powerful metamorphosis. An insect larva introduced by humans produces minerals useful to fungi and plants.
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