close
  • Ar chevron_right

    Microplastics and baby fish are drawn to the same spots in the ocean

    news.movim.eu / ArsTechnica – Thursday, 14 November - 14:07

A scribbled filefish in a sea of plastics sampled in surface slicks off Hawai

Enlarge / A scribbled filefish in a sea of plastics sampled in surface slicks off Hawai'i Island. (credit: David Liittschwager)

For a brief moment at the start of their lives, fish from different ocean ecosystems live side by side in gigantic fish nurseries, where surface waters converge and the prey is abundant.

Prey isn’t the only thing that’s abundant here. According to a paper published in PNAS this week, the same currents that make these regions appealing as nurseries mean that they’re awash with plastics. The consequences for commercial fisheries and the ocean's food webs are difficult to discern but could be significant.

Fish nurseries

Oceanographer Jamison Gove and his colleagues set out to understand more about how the features of the ocean affect the survival of larval fish—crucial information for the world’s fisheries. They didn’t expect to find a soup of microplastics in what looked like clear water.

Read 10 remaining paragraphs | Comments

index?i=WPnoG_-MGgQ:OSZaKWDT6uc:V_sGLiPBpWUindex?i=WPnoG_-MGgQ:OSZaKWDT6uc:F7zBnMyn0Loindex?d=qj6IDK7rITsindex?d=yIl2AUoC8zA
  • Ar chevron_right

    One of the world’s “most wanted” mammals has been rediscovered

    news.movim.eu / ArsTechnica – Wednesday, 13 November - 11:45

Camera-trap photo of silver-backed chevrotain (Tragulus versicolor).

Enlarge / Camera-trap photo of silver-backed chevrotain (Tragulus versicolor). (credit: SIE/GWC/Leibniz-IZW/NCNP )

Every time field biologist An Nguyen finds a mammal in the wild that he's never seen before, he adds a line to the tally count tattoo on his left wrist.

The silver-backed chevrotain , a tiny "mouse-deer" native to Vietnam, is a sighting significant for more than just Nguyen's personal tally. There has been only one confirmed record of the elusive mammal since 1910—a specimen obtained from a hunter in 1990—until Nguyen and his team set camera traps that recorded 280 sightings within nine months.

The news, reported this week in Nature Ecology & Evolution, is more than just confirmation that the silver-backed chevrotain is not yet extinct. It means that researchers can start studying it more comprehensively, trying to get a sense of how many are left and what kinds of protections it needs. And protecting the chevrotain also means protecting the less cute, but equally essential, species that share its habitat.

Read 14 remaining paragraphs | Comments

index?i=GtPLIE8iLHc:d9D1GVDf0cc:V_sGLiPBpWUindex?i=GtPLIE8iLHc:d9D1GVDf0cc:F7zBnMyn0Loindex?d=qj6IDK7rITsindex?d=yIl2AUoC8zA
  • Ar chevron_right

    As the Arctic heats up, what’s in store for its food webs?

    news.movim.eu / ArsTechnica – Saturday, 26 October - 16:30

Dwindling sea ice next to a mostly snowless cliff shore.

Enlarge / Arctic sea ice is declining as waters heat up. (credit: Allan Hopkins / Flickr )

The view from Kongsfjorden, Svalbard, is endless snow-covered mountains and glassy, frigid water. You need to travel roughly 400 miles west from the remote Norwegian archipelago to reach the northeast coast of Greenland.

Kongsfjorden, home to one of the few human settlements on Svalbard, has been studied intensively. It's a "natural laboratory" of Arctic climate change, one that has suggests that the ecosystems living in these icy water have so far managed a surprising amount of resilience in the face of rising temperatures, according to a paper in Nature Climate Change. But the long-term picture suggests a future that is probably not so rosy.

Layers of complexity

As the sea ice melts in the Arctic—which is warming substantially faster than the global average—the food webs living in these icy waters are in peril.

Read 14 remaining paragraphs | Comments

index?i=f01ynjH3mrg:1ghVafQGBNY:V_sGLiPBpWUindex?i=f01ynjH3mrg:1ghVafQGBNY:F7zBnMyn0Loindex?d=qj6IDK7rITsindex?d=yIl2AUoC8zA
  • chevron_right

    Rebellyons-nous, occupation du pont Wilson à #Lyon

    Timothée Jaussoin – Monday, 16 September - 07:46 edit

Le dimanche 15 septembre 2019, sous un soleil de plomb nous avons bloqué avec succès le pont Wilson en plein centre de #Lyon.

Cet évènement coup de poing, non-violent et festif nous a permis de dénoncer la gravité de la situation face aux chamboulements écologiques et climatiques que nous vivons présentement et à venir très prochainement.

Cet évènement a été relayé dans la presse par Rue89 et a fait l'ouverture du journal du soir France3 Rhône-Alpes.

De nombreuses actions de désobéissance civiles non-violentes sont à prévoir prochainement. Plus d'informations sur le site officiel de XR France et sur le site international.

#ecology #climate #france #extinctionrebellion #xr #action #movement #bridge #pont

  • Extinction Rebellion

    Nous faisons face à une urgence mondiale sans précédent. Les gouvernements ont échoué à nous protéger malgré les solutions connues et préconisées. Il est don...

  • image
  • favorite

    2 Like

    Christine Ho , debacle