#anoxia — Public Fediverse posts

Anoxic events have a buildup to them, notably in the early days of land plants, with nutrient flow from land slowly rising as wet areas expand over ~800 kyr prior to the main event.

Link: https://www.sciencedirect.com/science/article/pii/S0012821X26004139

#Devonian #Ocean #Anoxia

Anoxic events have a buildup to them, notably in the early days of land plants, with nutrient flow from land slowly rising as wet areas expand over ~800 kyr prior to the main event.

Link: https://www.sciencedirect.com/science/article/pii/S0012821X26004139

#Devonian #Ocean #Anoxia

#WeekendReading: Chen et al. on how marine anoxia develops under high atmospheric O2 and icehouse conditions (as you guessed, it has something to do with rapid rises in CO2).

Link: https://www.pnas.org/doi/10.1073/pnas.2420505122

#Anoxia #Ocean #Geology #IceHouse

#WeekendReading: Chen et al. on how marine anoxia develops under high atmospheric O2 and icehouse conditions (as you guessed, it has something to do with rapid rises in CO2).

Link: https://www.pnas.org/doi/10.1073/pnas.2420505122

#Anoxia #Ocean #Geology #IceHouse

#WeekendReading: Dodd et al. about recurring marine phosphorus spikes during major Paleozoic mass extinctions, and how they might be driving anoxia.

Link: https://www.nature.com/articles/s41467-026-70701-y

#MassExtinction #Ocean #Anoxia #Paleozoic

#WeekendReading: Dodd et al. about recurring marine phosphorus spikes during major Paleozoic mass extinctions, and how they might be driving anoxia.

Link: https://www.nature.com/articles/s41467-026-70701-y

#MassExtinction #Ocean #Anoxia #Paleozoic

ANOXIA (Austràlia) presenta nou àlbum: "Revel in Sin" #Anoxia #DeathMetal #Abril2025 #Austràlia #NouÀlbum #Metall #Metal #MúsicaMetal #MetalMusic

#WeekendReading: Krewer et al. on the end and recovering of the ocean from #anoxia events.
https://ajsonline.org/article/118797

#WeekendReading: Krewer et al. on the end and recovering of the ocean from #anoxia events.
https://ajsonline.org/article/118797

Travel down the rab...er...#corn hole with John Oliver as he reveals the financial & environmental [& social] impacts / costs of corn-ication in the U.S. [Probably, elsewhere, too.] https://youtu.be/MI78WOW_u-Q #comedy #pollution #agriculture #heath #CorporateWelfare #ToxicAlgae #inequity #crime #racism #monopoly #monocrop #erosion #AntibioticResistantBacteria #CAFOs #water #DeadZones #anoxia #nitrates #BlueBabies #DustStorms #ClimateChange #BirdFlu

Travel down the rab...er...#corn hole with John Oliver as he reveals the financial & environmental [& social] impacts / costs of corn-ication in the U.S. [Probably, elsewhere, too.] https://youtu.be/MI78WOW_u-Q #comedy #pollution #agriculture #heath #CorporateWelfare #ToxicAlgae #inequity #crime #racism #monopoly #monocrop #erosion #AntibioticResistantBacteria #CAFOs #water #DeadZones #anoxia #nitrates #BlueBabies #DustStorms #ClimateChange #BirdFlu

Researchers use #genetic #engineering to create #flood-tolerant #plants.

#CAX1 #calcium #anoxia

https://phys.org/news/2024-03-genetic-tolerant.html

First paper out of Nina Wichern's PhD (w/ other good people, also me) explores how weathering, #anoxia, and orbital forcing interacted during the Kellwasser Crisis of the Late Devonian #extinction (ca. 372 Ma).
https://cp.copernicus.org/articles/20/415/2024/

Marine #anoxia is characterized by the oceans being severely depleted in dissolved #oxygen, making them toxic and thus having devastating impacts on the organisms inhabiting them.

Global warming caused widespread #ocean anoxia 93 million years ago.

Persistent low-oxygen layers increase in number and size with enhanced warming of the oceans, forming a thick zone at depth below a highly productive thin surface layer that is oxygen-rich.

#climate
https://phys.org/news/2024-01-global-widespread-ocean-anoxia-million.html

Marine #anoxia is characterized by the oceans being severely depleted in dissolved #oxygen, making them toxic and thus having devastating impacts on the organisms inhabiting them.

Global warming caused widespread #ocean anoxia 93 million years ago.

Persistent low-oxygen layers increase in number and size with enhanced warming of the oceans, forming a thick zone at depth below a highly productive thin surface layer that is oxygen-rich.

#climate
https://phys.org/news/2024-01-global-widespread-ocean-anoxia-million.html

#GlobalWarming caused widespread ocean #anoxia 93 million years ago, #DeepSea sediments research suggests
https://phys.org/news/2024-01-global-widespread-ocean-anoxia-million.html

#Warming drove the expansion of #MarineAnoxia in the equatorial #Atlantic during the #Cenomanian leading up to Oceanic #Anoxic Event 2 https://cp.copernicus.org/articles/19/2569/2023/

"During such scenarios, organic matter is buried at an elevated rate, producing distinctive layers of black #shale in the #geological record, which are depleted in the isotopically-heavier #carbon-13"

#GlobalWarming caused widespread ocean #anoxia 93 million years ago, #DeepSea sediments research suggests
https://phys.org/news/2024-01-global-widespread-ocean-anoxia-million.html

#Warming drove the expansion of #MarineAnoxia in the equatorial #Atlantic during the #Cenomanian leading up to Oceanic #Anoxic Event 2 https://cp.copernicus.org/articles/19/2569/2023/

"During such scenarios, organic matter is buried at an elevated rate, producing distinctive layers of black #shale in the #geological record, which are depleted in the isotopically-heavier #carbon-13"

#Permian marine #MassExtinction linked to #volcanism-induced anoxia https://phys.org/news/2023-12-permian-marine-mass-extinction-linked.html

Coupled #volcanic activity and marine #anoxia in the Upper #Yangtze region prior to the #Capitanian mass #extinction https://www.sciencedirect.com/science/article/abs/pii/S0009254123005399

"The geochemical data and decline in calcareous #algae and fusulinacean #foraminifera... indicates #MarineAnoxia and more pronounced stratification... In such conditions, #OxygenMinimumZones likely developed... that would have inhibited the survival of organisms."

#Permian marine #MassExtinction linked to #volcanism-induced anoxia https://phys.org/news/2023-12-permian-marine-mass-extinction-linked.html

Coupled #volcanic activity and marine #anoxia in the Upper #Yangtze region prior to the #Capitanian mass #extinction https://www.sciencedirect.com/science/article/abs/pii/S0009254123005399

"The geochemical data and decline in calcareous #algae and fusulinacean #foraminifera... indicates #MarineAnoxia and more pronounced stratification... In such conditions, #OxygenMinimumZones likely developed... that would have inhibited the survival of organisms."

Study challenges assumption that higher #oxygen levels led to rise of multicellular organisms in Earth's oceans https://phys.org/news/2023-07-assumption-higher-oxygen-multicellular-earth.html

Widespread #seafloor #anoxia during generation of the #Ediacaran Shuram carbon isotope excursion https://onlinelibrary.wiley.com/doi/10.1111/gbi.12557

"there was no major increase in the amount of oxygen when more advanced #fauna began to evolve and dominate Earth. In fact, there was somewhat of a slight decrease"

Study challenges assumption that higher #oxygen levels led to rise of multicellular organisms in Earth's oceans https://phys.org/news/2023-07-assumption-higher-oxygen-multicellular-earth.html

Widespread #seafloor #anoxia during generation of the #Ediacaran Shuram carbon isotope excursion https://onlinelibrary.wiley.com/doi/10.1111/gbi.12557

"there was no major increase in the amount of oxygen when more advanced #fauna began to evolve and dominate Earth. In fact, there was somewhat of a slight decrease"

Geologists find evidence of dual #MassExtinctions 260 million years ago https://phys.org/news/2023-04-geology-experts-evidence-dual-mass.html

Global oceanic #anoxia linked with the Capitanian (Middle #Permian) marine #MassExtinction https://www.sciencedirect.com/science/article/abs/pii/S0012821X23001413

Oxygen-deprived oceans precipitated two mass extinctions around 259 million and 262 million years ago during the Middle Permian Period.

Geologists find evidence of dual #MassExtinctions 260 million years ago https://phys.org/news/2023-04-geology-experts-evidence-dual-mass.html

Global oceanic #anoxia linked with the Capitanian (Middle #Permian) marine #MassExtinction https://www.sciencedirect.com/science/article/abs/pii/S0012821X23001413

Oxygen-deprived oceans precipitated two mass extinctions around 259 million and 262 million years ago during the Middle Permian Period.

Ocean currents, agricultural runoff, landscape, and a variety of other local and regional conditions mean that our oceans have just as diverse an array of habitats as dry land, if not more. Consequently, while we know that, overall oceanic oxygen levels are decreasing, that doesn’t actually tell us how that is progressing in different ecosystems. For that, we actually need to pay people to go check. Fortunately, while I think we don’t spend enough on that, we do spend quite a bit on it, as a species, and so we have some new information about how the ocean’s deoxygenation is progressing in what may be the single most “charismatic” set of oceanic ecosystems – coral reefs.

#GlobalWarming #ClimateChange #ClimateCrisis #Hypoxia #Anoxia #DeadZone #Coral #Reef

https://freethoughtblogs.com/oceanoxia/2023/03/17/coral-reefs-are-losing-oxygen-as-the-planet-warms-and-we-should-do-socialism-about-it/