#permafrost — Public Fediverse posts

🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.

These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.

👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists

#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video

🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.

These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.

👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists

#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video

🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.

These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.

👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists

#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video

🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.

These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.

👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists

#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video

🐿️ WATCH: In the #Yukon #permafrost, researchers found 700,000-year-old fossilized #dung from an #extinct ground #squirrel species.

These preserved #burrows contained ancient plant material, #bones, and the oldest #woollymammoth #DNA identified in #NorthAmerica, tracking how #prehistoric #ecosystems shifted over time.

👉 Learn more: https://seethis.tv/post/ancient-ground-squirrel-poop-becomes-a-treasure-trove-for-paleontologists

#animals #archaeology #biology #canada #climate #climatechange #data #discovery #evolution #fossils #genetics #history #paleontology #plants #poop #research #science #technology #tech #mammoth #tksst #video

Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens

Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/

Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens

Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/

Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens

Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/

Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens

Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #Carbon #ClimateChange #GB #Permafrost #UK #UnitedKingdom
https://www.newsbeep.com/uk/771458/

[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/

#ClimateChange #erosion
@nature

[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/

#ClimateChange #erosion
@nature

[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/

#ClimateChange #erosion
@nature

[Science News] Rising global #temperatures are leading, in particular, to the melting of #permafrost . This permanently frozen soil stores a massive amount of organic #carbon (1,300 gigatons across the #arctic ) which rivers carry out to sea. However, a recent analysis of marine sediment cores shows that only 10% of this organic carbon is converted into gas by microorganisms, and thus contributes in turn to #globalwarming : https://scitechdaily.com/thawing-permafrost-is-releasing-carbon-but-something-unexpected-happens/

#ClimateChange #erosion
@nature

Thawing Permafrost Is Releasing Carbon, but Something Unexpected Happens

Permafrost in the Arctic stores large quantities of organic carbon. When the frozen ground thaws or coastal sections…
#NewsBeep #News #Science #AlfredWegenerInstitute #Arctic #CA #Canada #carbon #climatechange #Permafrost
https://www.newsbeep.com/ca/894725/

#Servicetweet #News #Umwelt #Environment #Permafrost
➡️ Stichwort Permafrost
➡️ In nur 10 Jahren hat sich die Methanfreisetzung in Sibirien mehr als verdoppelt
➡️ Reminder: Methan ist klimaschädlicher als CO2
https://www.forschung-und-wissen.de/nachrichten/umwelt/sibirien-setzt-doppelt-so-viel-methan-frei-wie-vor-zehn-jahren-133712121 1/x

Am #Matterhorn ist es nach anhaltender Hitze und einem schneearmen Winter zu einem massiven #Felsabbruch gekommen.

Augenzeugen-Videos zeigen, wie große Mengen Stein und Geröll als Staubwolke ins Tal stürzen. Das Ereignis verdeutlicht die Veränderungen in den #Alpen.

https://www.n-tv.de/mediathek/videos/panorama/Videos-zeigen-massiven-Abbruch-am-Matterhorn-id31168849.html

#Hitze #Klimawandel #Bergwandern #Erderwärmung #climatechange #Permafrost #Bergsturz

Rock Weathering Can Counteract River CO2 Emissions Induced By Permafrost Thaw
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https://doi.org/10.1038/s41586-026-10664-8 <-- shared paper
--
H/T @aaron Bufe
“[The researchers] measured carbon emissions and water chemistry in 50 headwater rivers draining 780,000 km² of the Tibetan Plateau.
The rivers flow in landscapes underlain by continuous permafrost and landscapes in which the permafrost has retreated since the last glacial maximum. They collect[ed] organic carbon from soils and dissolved inorganic carbon that is fixed by rock-weathering.
Where the permafrost cover is continuous, rivers emit CO2 from degrading (permafrost) soil carbon. Weathering reactions in these catchments are relatively slow.
In landscapes with (almost) no permafrost, carbon fluxes from weathering are faster than CO2 emissions from rivers.
Thus, as permafrost landscapes transition to landscapes without permafrost cover, chemical weathering reactions may play an ever more important role in riverine carbon cycling.
Interestingly, weathering can affect the carbon cycle in different ways. Where sulfide minerals are present, weathering reactions can emit CO2. Where silicate minerals dominate, weathering draws down CO2 from the atmosphere…”
--
“Climate-induced permafrost thaw unlocks large stores of organic carbon that are mineralized and emitted as carbon dioxide (CO2) from rivers to the atmosphere. Concurrently, warming and permafrost thaw can increase mineral weathering rates, thus affecting the release and sequestration of inorganic carbon. Yet how these biological and geological carbon cycles interact and jointly affect CO2 dynamics (emission compared with drawdown) in permafrost rivers remains unknown. Here [they] combine[d] CO2 emissions, organic and inorganic solute concentrations, dual carbon isotopes (δ13C–Δ14C) and geochemical modelling to infer how permafrost thaw may affect river biogeochemistry over decades to centuries across the Qinghai–Tibet Plateau. Leveraging a gradient of thermal permafrost degradation, we find that river CO2 emissions decline, whereas solute fluxes from rock weathering increase with decreasing permafrost cover. Across this region, net CO2 drawdown fluxes from rock weathering are about 35% of river CO2 emissions, varying from around 15% in catchments with continuous permafrost to more than 100% in catchments with discontinuous or isolated permafrost. Thus, carbon fluxes from chemical weathering may become increasingly important with ongoing permafrost thaw, potentially even outpacing river CO2 emissions. [Their] findings disentangle the interplay between biological and geological carbon fluxes that are important for the cryosphere and the global carbon cycle…”
#permafrost #melting #thaw #climatechange #warming #Tibet #TibetanPlateau #Qinghai #water #hydrology #carbonemissions #CO2 #emissions #waterchemistry #waterquality #cryosphere #sediment #sedimentation #weathering #rock #carbon #river #riverine #carboncyling #geochemistry #biology #geology #soil

Okay, dann ist die nächste #Pandemie wohl von einer #Bakterie:

Ein 5.000 Jahre eingefrorenes #Bakterium aus einer rumänischen #Eishöhle zeigt Resistenz gegenüber zehn #Antibiotika.

Forschende fanden mehr als 100 #Resistenzgene, die beim Auftauen in die Umwelt gelangen und heutige Erreger stärken könnten.

https://www.scinexx.de/news/biowissen/5-000-jahre-eingefrorenes-bakterium-ist-ein-superkeim/

#Mikrobiologie #Eis #Permafrost #Superkeim #healthcare

5.000 Jahre eingefrorenes Bakterium ist ein „Superkeim“. Aufgetautes Höhlenbakterien erweist sich als immun gegen zehn moderne Antibiotika. #Antibiotika #Antibiotikaresistenz #multiresistent #Bakterien #Permafrost
https://www.scinexx.de/news/biowissen/5-000-jahre-eingefrorenes-bakterium-ist-ein-superkeim/

40.000 Jahre alte Eiszeitmikroben wiedererweckt. Tiefgefrorene Mikroorganismen aus dem Permafrost lassen sich reanimieren. #Permafrost #Mikroben #Eiszeit #Wiedererweckt
https://www.scinexx.de/news/geowissen/40-000-jahre-alte-eiszeitmikroben-wiedererweckt/

Ungewöhnlich hohe #Temperaturen und #Schneearmut haben mglw. einen massiven #Felssturz am #MonteRosa in #Italien verursacht. #Gesteinsmassen rollten hunderte Meter ins Tal.

https://www.fr.de/panorama/verheerender-felssturz-am-monte-rosa-in-italien-bergrettung-warnt-93490638.html

Glücklicherweise geschah das Unglück nachts, sodass keine Verletzten gemeldet wurden. Experten vermuten schmelzenden #Permafrost als Ursache. Die Bergrettung warnt vor weiteren Abstürzen und rät dringend, das Gebiet um die Pedriola-Alm zu meiden. #Klimawandel #Bergsicherheit #Alpen