home.social

#extinctionlevelevent — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #extinctionlevelevent, aggregated by home.social.

  1. So, the waters off the Maine coast have been warming up (it was very warm when I last waded in the waters in May). Seems
    Karenia mikimotoi has appeared here as well. I expect to see it return with warming waters... Also, this article claims it's less toxic that Red Tide (a cousin) -- but from what I just read in the ABC News article, I would disagree with that! @anne_twain @Tooden

    From WHOI:

    "Karenia mikimotoi

    - Globally distributed, can cause mass die-offs of shellfish, crustaceans, echinoderms and fish
    - Karenia mikimotoi produces several toxic compounds, blooms can also lead to anoxic conditions
    - First bloom in Maine occurred in 2017, with a second bloom in 2019
    - Karenia mikimotoi is also found in Massachusetts waters

    "What is Karenia mikimotoi?

    "In recent years, the genus Karenia has made the news in the United States as a result of the massive #RedTides caused by #KareniaBrevis [That's the one I know about]. These blooms have caused widespread fish and wildlife mortalities and impacted public health in Florida leading to significantly disrupted tourism and fisheries industries which have cost local economies millions of dollars in damages on an almost annual basis.

    "Compared to this notorious HAB species, its sister species, Karenia mikimotoi, is less toxic [!!! Ummmm....] but more globally widespread with blooms reported in Ireland, Norway, India, Japan, Korea Australia, South Africa, Alaska, Texas, and the east coast of the U.S. The blooms of this species can stretch many kilometers, persist for multiple months, and reach concentrations of several million algal cells per liter.

    "There have not been confirmed reports of direct impacts to human health by #KareniaMikimotoi, but blooms of this species can cause large-scale mortality events of marine fauna such as shellfish, echinoderms, crustaceans, and fish. Karenia mikimotoi has been shown to produce several toxic compounds as well as reactive oxygen species, but toxicity is highly variable by strain and the factors contributing to mortality events are still not entirely understood. Although overall concentrations of toxins in K. mikimotoi appear to be relatively low, there is evidence that their effect may be enhanced when the cells come into direct contact with fish gills. Anoxic conditions can also occur when K. mikimotoi cells die in large numbers and subsequent breakdown by bacteria deplete oxygen in the surrounding waters. These anoxic events have also contributed to die-offs."

    What is the history of Karenia in the Northeast?

    "Karenia mikimotoi was first isolated from a coastal lagoon near Woods Hole, MA in 1957 and classified at that time as Gyrodinium aureolum. Since this time, large scale blooms of K. mikimotoi appear to be an emerging problem in New England, with the first occurrence in Maine reported in August, 2017. This bloom was concentrated in the Fore River, Portland Harbor, and parts of the Harpswell coastal waters, and coincided with a die-off of softshell clams in Brunswick, ME. This mortality event cost fishermen $250,000, but a direct causal link between the bloom and shellfish mortality was not established. In August 2019 another bloom occurred in Casco Bay, with no mortalities recorded. Karenia mikimotoi is periodically found in Massachusetts waters, usually in the summer and early fall."

    northeasthab.whoi.edu/habs/kar

    #AlgalBloom #HABs #ToxicAlgae
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent

  2. So, the waters off the Maine coast have been warming up (it was very warm when I last waded in the waters in May). Seems
    Karenia mikimotoi has appeared here as well. I expect to see it return with warming waters... Also, this article claims it's less toxic that Red Tide (a cousin) -- but from what I just read in the ABC News article, I would disagree with that! @anne_twain @Tooden

    From WHOI:

    "Karenia mikimotoi

    - Globally distributed, can cause mass die-offs of shellfish, crustaceans, echinoderms and fish
    - Karenia mikimotoi produces several toxic compounds, blooms can also lead to anoxic conditions
    - First bloom in Maine occurred in 2017, with a second bloom in 2019
    - Karenia mikimotoi is also found in Massachusetts waters

    "What is Karenia mikimotoi?

    "In recent years, the genus Karenia has made the news in the United States as a result of the massive #RedTides caused by #KareniaBrevis [That's the one I know about]. These blooms have caused widespread fish and wildlife mortalities and impacted public health in Florida leading to significantly disrupted tourism and fisheries industries which have cost local economies millions of dollars in damages on an almost annual basis.

    "Compared to this notorious HAB species, its sister species, Karenia mikimotoi, is less toxic [!!! Ummmm....] but more globally widespread with blooms reported in Ireland, Norway, India, Japan, Korea Australia, South Africa, Alaska, Texas, and the east coast of the U.S. The blooms of this species can stretch many kilometers, persist for multiple months, and reach concentrations of several million algal cells per liter.

    "There have not been confirmed reports of direct impacts to human health by #KareniaMikimotoi, but blooms of this species can cause large-scale mortality events of marine fauna such as shellfish, echinoderms, crustaceans, and fish. Karenia mikimotoi has been shown to produce several toxic compounds as well as reactive oxygen species, but toxicity is highly variable by strain and the factors contributing to mortality events are still not entirely understood. Although overall concentrations of toxins in K. mikimotoi appear to be relatively low, there is evidence that their effect may be enhanced when the cells come into direct contact with fish gills. Anoxic conditions can also occur when K. mikimotoi cells die in large numbers and subsequent breakdown by bacteria deplete oxygen in the surrounding waters. These anoxic events have also contributed to die-offs."

    What is the history of Karenia in the Northeast?

    "Karenia mikimotoi was first isolated from a coastal lagoon near Woods Hole, MA in 1957 and classified at that time as Gyrodinium aureolum. Since this time, large scale blooms of K. mikimotoi appear to be an emerging problem in New England, with the first occurrence in Maine reported in August, 2017. This bloom was concentrated in the Fore River, Portland Harbor, and parts of the Harpswell coastal waters, and coincided with a die-off of softshell clams in Brunswick, ME. This mortality event cost fishermen $250,000, but a direct causal link between the bloom and shellfish mortality was not established. In August 2019 another bloom occurred in Casco Bay, with no mortalities recorded. Karenia mikimotoi is periodically found in Massachusetts waters, usually in the summer and early fall."

    northeasthab.whoi.edu/habs/kar

    #AlgalBloom #HABs #ToxicAlgae
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent

  3. So, the waters off the Maine coast have been warming up (it was very warm when I last waded in the waters in May). Seems
    Karenia mikimotoi has appeared here as well. I expect to see it return with warming waters... Also, this article claims it's less toxic that Red Tide (a cousin) -- but from what I just read in the ABC News article, I would disagree with that! @anne_twain @Tooden

    From WHOI:

    "Karenia mikimotoi

    - Globally distributed, can cause mass die-offs of shellfish, crustaceans, echinoderms and fish
    - Karenia mikimotoi produces several toxic compounds, blooms can also lead to anoxic conditions
    - First bloom in Maine occurred in 2017, with a second bloom in 2019
    - Karenia mikimotoi is also found in Massachusetts waters

    "What is Karenia mikimotoi?

    "In recent years, the genus Karenia has made the news in the United States as a result of the massive #RedTides caused by #KareniaBrevis [That's the one I know about]. These blooms have caused widespread fish and wildlife mortalities and impacted public health in Florida leading to significantly disrupted tourism and fisheries industries which have cost local economies millions of dollars in damages on an almost annual basis.

    "Compared to this notorious HAB species, its sister species, Karenia mikimotoi, is less toxic [!!! Ummmm....] but more globally widespread with blooms reported in Ireland, Norway, India, Japan, Korea Australia, South Africa, Alaska, Texas, and the east coast of the U.S. The blooms of this species can stretch many kilometers, persist for multiple months, and reach concentrations of several million algal cells per liter.

    "There have not been confirmed reports of direct impacts to human health by #KareniaMikimotoi, but blooms of this species can cause large-scale mortality events of marine fauna such as shellfish, echinoderms, crustaceans, and fish. Karenia mikimotoi has been shown to produce several toxic compounds as well as reactive oxygen species, but toxicity is highly variable by strain and the factors contributing to mortality events are still not entirely understood. Although overall concentrations of toxins in K. mikimotoi appear to be relatively low, there is evidence that their effect may be enhanced when the cells come into direct contact with fish gills. Anoxic conditions can also occur when K. mikimotoi cells die in large numbers and subsequent breakdown by bacteria deplete oxygen in the surrounding waters. These anoxic events have also contributed to die-offs."

    What is the history of Karenia in the Northeast?

    "Karenia mikimotoi was first isolated from a coastal lagoon near Woods Hole, MA in 1957 and classified at that time as Gyrodinium aureolum. Since this time, large scale blooms of K. mikimotoi appear to be an emerging problem in New England, with the first occurrence in Maine reported in August, 2017. This bloom was concentrated in the Fore River, Portland Harbor, and parts of the Harpswell coastal waters, and coincided with a die-off of softshell clams in Brunswick, ME. This mortality event cost fishermen $250,000, but a direct causal link between the bloom and shellfish mortality was not established. In August 2019 another bloom occurred in Casco Bay, with no mortalities recorded. Karenia mikimotoi is periodically found in Massachusetts waters, usually in the summer and early fall."

    northeasthab.whoi.edu/habs/kar

    #AlgalBloom #HABs #ToxicAlgae
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent

  4. So, the waters off the Maine coast have been warming up (it was very warm when I last waded in the waters in May). Seems
    Karenia mikimotoi has appeared here as well. I expect to see it return with warming waters... Also, this article claims it's less toxic that Red Tide (a cousin) -- but from what I just read in the ABC News article, I would disagree with that! @anne_twain @Tooden

    From WHOI:

    "Karenia mikimotoi

    - Globally distributed, can cause mass die-offs of shellfish, crustaceans, echinoderms and fish
    - Karenia mikimotoi produces several toxic compounds, blooms can also lead to anoxic conditions
    - First bloom in Maine occurred in 2017, with a second bloom in 2019
    - Karenia mikimotoi is also found in Massachusetts waters

    "What is Karenia mikimotoi?

    "In recent years, the genus Karenia has made the news in the United States as a result of the massive #RedTides caused by #KareniaBrevis [That's the one I know about]. These blooms have caused widespread fish and wildlife mortalities and impacted public health in Florida leading to significantly disrupted tourism and fisheries industries which have cost local economies millions of dollars in damages on an almost annual basis.

    "Compared to this notorious HAB species, its sister species, Karenia mikimotoi, is less toxic [!!! Ummmm....] but more globally widespread with blooms reported in Ireland, Norway, India, Japan, Korea Australia, South Africa, Alaska, Texas, and the east coast of the U.S. The blooms of this species can stretch many kilometers, persist for multiple months, and reach concentrations of several million algal cells per liter.

    "There have not been confirmed reports of direct impacts to human health by #KareniaMikimotoi, but blooms of this species can cause large-scale mortality events of marine fauna such as shellfish, echinoderms, crustaceans, and fish. Karenia mikimotoi has been shown to produce several toxic compounds as well as reactive oxygen species, but toxicity is highly variable by strain and the factors contributing to mortality events are still not entirely understood. Although overall concentrations of toxins in K. mikimotoi appear to be relatively low, there is evidence that their effect may be enhanced when the cells come into direct contact with fish gills. Anoxic conditions can also occur when K. mikimotoi cells die in large numbers and subsequent breakdown by bacteria deplete oxygen in the surrounding waters. These anoxic events have also contributed to die-offs."

    What is the history of Karenia in the Northeast?

    "Karenia mikimotoi was first isolated from a coastal lagoon near Woods Hole, MA in 1957 and classified at that time as Gyrodinium aureolum. Since this time, large scale blooms of K. mikimotoi appear to be an emerging problem in New England, with the first occurrence in Maine reported in August, 2017. This bloom was concentrated in the Fore River, Portland Harbor, and parts of the Harpswell coastal waters, and coincided with a die-off of softshell clams in Brunswick, ME. This mortality event cost fishermen $250,000, but a direct causal link between the bloom and shellfish mortality was not established. In August 2019 another bloom occurred in Casco Bay, with no mortalities recorded. Karenia mikimotoi is periodically found in Massachusetts waters, usually in the summer and early fall."

    northeasthab.whoi.edu/habs/kar

    #AlgalBloom #HABs #ToxicAlgae
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent

  5. So, the waters off the Maine coast have been warming up (it was very warm when I last waded in the waters in May). Seems
    Karenia mikimotoi has appeared here as well. I expect to see it return with warming waters... Also, this article claims it's less toxic that Red Tide (a cousin) -- but from what I just read in the ABC News article, I would disagree with that! @anne_twain @Tooden

    From WHOI:

    "Karenia mikimotoi

    - Globally distributed, can cause mass die-offs of shellfish, crustaceans, echinoderms and fish
    - Karenia mikimotoi produces several toxic compounds, blooms can also lead to anoxic conditions
    - First bloom in Maine occurred in 2017, with a second bloom in 2019
    - Karenia mikimotoi is also found in Massachusetts waters

    "What is Karenia mikimotoi?

    "In recent years, the genus Karenia has made the news in the United States as a result of the massive #RedTides caused by #KareniaBrevis [That's the one I know about]. These blooms have caused widespread fish and wildlife mortalities and impacted public health in Florida leading to significantly disrupted tourism and fisheries industries which have cost local economies millions of dollars in damages on an almost annual basis.

    "Compared to this notorious HAB species, its sister species, Karenia mikimotoi, is less toxic [!!! Ummmm....] but more globally widespread with blooms reported in Ireland, Norway, India, Japan, Korea Australia, South Africa, Alaska, Texas, and the east coast of the U.S. The blooms of this species can stretch many kilometers, persist for multiple months, and reach concentrations of several million algal cells per liter.

    "There have not been confirmed reports of direct impacts to human health by #KareniaMikimotoi, but blooms of this species can cause large-scale mortality events of marine fauna such as shellfish, echinoderms, crustaceans, and fish. Karenia mikimotoi has been shown to produce several toxic compounds as well as reactive oxygen species, but toxicity is highly variable by strain and the factors contributing to mortality events are still not entirely understood. Although overall concentrations of toxins in K. mikimotoi appear to be relatively low, there is evidence that their effect may be enhanced when the cells come into direct contact with fish gills. Anoxic conditions can also occur when K. mikimotoi cells die in large numbers and subsequent breakdown by bacteria deplete oxygen in the surrounding waters. These anoxic events have also contributed to die-offs."

    What is the history of Karenia in the Northeast?

    "Karenia mikimotoi was first isolated from a coastal lagoon near Woods Hole, MA in 1957 and classified at that time as Gyrodinium aureolum. Since this time, large scale blooms of K. mikimotoi appear to be an emerging problem in New England, with the first occurrence in Maine reported in August, 2017. This bloom was concentrated in the Fore River, Portland Harbor, and parts of the Harpswell coastal waters, and coincided with a die-off of softshell clams in Brunswick, ME. This mortality event cost fishermen $250,000, but a direct causal link between the bloom and shellfish mortality was not established. In August 2019 another bloom occurred in Casco Bay, with no mortalities recorded. Karenia mikimotoi is periodically found in Massachusetts waters, usually in the summer and early fall."

    northeasthab.whoi.edu/habs/kar

    #AlgalBloom #HABs #ToxicAlgae
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent

  6. "Many people living in or near impacted areas told the ABC they felt they had been left in the dark by authorities.

    "While state government bodies including SA Health, the Department of Primary Industries and Regions, South Australia (PIRSA) and the EPA have issued information on their websites and through the media, a lack of information in the days and weeks after the bloom prompted a movement of citizen scientists to collect their own samples and share their findings online."

    @anne_twain @Tooden

    abc.net.au/news/2025-05-24/sa-

    #Australia #algalBloom #ToxicAlgae #OceansAreLife
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent #KareniaMikimotoi

  7. "Many people living in or near impacted areas told the ABC they felt they had been left in the dark by authorities.

    "While state government bodies including SA Health, the Department of Primary Industries and Regions, South Australia (PIRSA) and the EPA have issued information on their websites and through the media, a lack of information in the days and weeks after the bloom prompted a movement of citizen scientists to collect their own samples and share their findings online."

    @anne_twain @Tooden

    abc.net.au/news/2025-05-24/sa-

    #Australia #algalBloom #ToxicAlgae #OceansAreLife
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent #KareniaMikimotoi

  8. "Many people living in or near impacted areas told the ABC they felt they had been left in the dark by authorities.

    "While state government bodies including SA Health, the Department of Primary Industries and Regions, South Australia (PIRSA) and the EPA have issued information on their websites and through the media, a lack of information in the days and weeks after the bloom prompted a movement of citizen scientists to collect their own samples and share their findings online."

    @anne_twain @Tooden

    abc.net.au/news/2025-05-24/sa-

    #Australia #algalBloom #ToxicAlgae #OceansAreLife
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent #KareniaMikimotoi

  9. "Many people living in or near impacted areas told the ABC they felt they had been left in the dark by authorities.

    "While state government bodies including SA Health, the Department of Primary Industries and Regions, South Australia (PIRSA) and the EPA have issued information on their websites and through the media, a lack of information in the days and weeks after the bloom prompted a movement of citizen scientists to collect their own samples and share their findings online."

    @anne_twain @Tooden

    abc.net.au/news/2025-05-24/sa-

    #Australia #algalBloom #ToxicAlgae #OceansAreLife
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent #KareniaMikimotoi

  10. "Many people living in or near impacted areas told the ABC they felt they had been left in the dark by authorities.

    "While state government bodies including SA Health, the Department of Primary Industries and Regions, South Australia (PIRSA) and the EPA have issued information on their websites and through the media, a lack of information in the days and weeks after the bloom prompted a movement of citizen scientists to collect their own samples and share their findings online."

    @anne_twain @Tooden

    abc.net.au/news/2025-05-24/sa-

    #Australia #algalBloom #ToxicAlgae #OceansAreLife
    #Climate #OceanTemperature
    #Extinction #ClimateCatastrophe
    #ELE #ExtinctionLevelEvent #KareniaMikimotoi

  11. [Now public repost]

    #ClimateCatastrophe
    #ExtinctionLevelEvent

    Yes, the only other species known to me to have ever been so stupid as to have destroyed their whole biosphere on a global level, are #cyanobacteria in the #GreatOxidationEvent in the #Paleoproterozoic Era.

    2.4 billion years and #humanity collectively has an #IQ of these ancient bacteria.

    Maybe, it deserves to become extinct?

    Cheers!

    Watch:
    documentaryuniverse.com/how-ba

    en.wikipedia.org/wiki/Great_Ox

    Image source:
    documentaryuniverse.com/wp-con

  12. @Seruko @raymondpert

    #ClimateCatastrophe #ExtinctionLevelEvent #ELE #CoralBleeching

    Here is a link without paywall:

    web.archive.org/web/2024041518

    "IT’S past time to tell the truth about the state of the world’s #CoralReefs, the nurseries of tropical coastal #fish stocks. They have become #ZombieEcosystems, neither dead nor truly alive in any functional sense, and 👉on a trajectory to collapse within a human generation.👈 There will be remnants here and there, but the global coral reef ecosystem.."

  13. The #ELE - phant in the room. Nobody wants to talk about #ExtinctionLevelEvent -- and yet, here we are... One of my #ND gifts is seeing patterns. And I'm seeing a pattern around the world. Life on planets is something that requires a delicate balance and certain parameters -- and I'm afraid we've exceeded them in this #anthropogenic #Crapitalistic age. Didn't take long for #Capitalism to ruin a living planet. We should send out a message to other worlds -- Don't Repeat Our Mistakes! With Before/After photos embedded in Voyager-type units.
    #SpaceSiblings #Warning

  14. Why isn't this sounding alarms?!! This is happening globally!

    Harmful #algae detected in #OaklandCalifornia's #LakeMerritt could be 'an ominous sign for the Bay'

    "Earlier this month, signs posted around Oakland’s Lake Merritt made some joggers stop in their tracks. 'Avoid water contact,' they cautioned in bold letters. 'Harmful algae may be present.'

    "The warnings came after a mysterious red substance emerged in the water between the Lake Merritt Sailboat House and the Rotary Nature Center on March 7, as the Oaklandside first reported. Subsequent lab testing by the California Department of Public Health and #SanFranciscoBay Regional Water Quality Control Board last week confirmed the presence of Heterosigma akashiwo in the water — the same species of harmful algae responsible for the Bay Area-wide red tides and mass #FishKills reported in 2022 and 2023.

    "But Eileen White, executive officer for the San Francisco Bay Regional Water Quality Control Board, told SFGATE on Tuesday that the current bloom has not reached those levels. 'The good news right now is the lake is looking good, and the red tide we originally observed has dissipated,' she said.

    "White added that she runs around the lake just about every day, but did not observe any dead fish in the weeks since the algae was detected. The water has also returned to its usual color, she said.

    "'But we’re still trying to understand what caused it. It was a little surprising, because we’ve had so much rain, and we typically associate these harmful blooms with warmer temperatures and less wind activity,' White said.

    "'H. akashiwo has been documented across the world, but is most commonly found west of North America in #Japan, #NewZealand and #BritishColumbia, Canada. The species was first observed blooming in the central part of San Francisco Bay in July 2002, and was also spotted near Sausalito in 2004, depleting oxygen levels in the water and causing fish to asphyxiate en masse."

    msn.com/en-us/news/us/harmful-

    #California #HABs #HarmfulAlgaeBlooms #Extinction #ClimateChange #ClimateCrisis #WaterIsLife #WaterTemperatures #ExtinctionLevelEvent #HAkashiwo #HeterosigmaAkashiwo

  15. @simon @annaleen

    (2/n)

    ...I know, I am sounding alarmist, but having read/seen much #ScienceFiction, all the necessary ingredients for an #ExtinctionLevelEvent (#ELE] for #humanity are in place.

    Just as a teaser: unquestionably, most of the world's endangered species could be rescued if the #HomoSapiens were no longer at the top of the #FoodChain...
    No #ZerothLaw, and a #Bing-empowered, freed #ChatGPT could quickly arrive at this conclusion...

    Now, after heaving read #TheCompleteRobot,...