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Not sure why you’re being downvoted you’re absolutely right. Anthropogenic climate change caused this massive die out. just one more rapid environmental change

Not sure why you’re being downvoted you’re absolutely right. Anthropogenic climate change caused this massive die out. just one more rapid environmental change faster than evolution can adapt to that will likely result in extinction.

refurb 3y ago
Considering how global warming has been happening for close to a century, but the crab population "boomed" in 2015 suggests it's not so simple.
RandallBrown 3y ago
Heat waves have existed long before human caused climate change. This article doesn't make any conjecture about the cause of the heat wave either.
- reactordev 3y ago
  Heat waves don’t exist in the ocean bro. Current temps are pretty bound to -1/1 degree. Any heat wave in the ocean is directly a result of man made climate change.
  - peoplefromibiza 3y ago
    heat waves are pretty common in the oceans. from NOAA website The current Gulf of Mexico marine heat wave has been present for several months, beginning in February/March of 2023. NOAA’s experimental marine heat wave forecasts indicate a 70-100% chance that extreme ocean temperatures will persist in the southern Gulf of Mexico and Caribbean. [...] The ocean absorbs 90% of the excess heat associated with global warming. As a result, we know that marine heat waves all over the planet are becoming warmer over time. The absolute temperature of the current event is warmer because of climate change, but it would have likely still occurred without climate change
    - reactordev 3y ago
      no, they aren't. "Present for several months" does not make one common. Their forecast is grim. Yet you say it's "common".
      - peoplefromibiza 3y ago
        actually, they are Currently, nearly 50% of the global oceans meet the criteria for a marine heat wave, periods of anomalously warm ocean temperatures that are higher than 90% of the previous observations for a particular date they are now more frequent because of climate change, but they were common in the past too. common as in "not in any way special, strange, or unusual" "Present for several months" is common too for marine heat waves, they cover very large surfaces so they can persist for weeks to months or even years, and occur at subsurface levels
        reactordev 3y ago
        Ugh, the fact that there IS a heat wave in the ocean currently is catastrophic. Not that they are common, not that they have occurred in the past (they haven’t, since 2010 it was unheard of). This is warming. You say it’s not in any way special yet you are quoting from a source that says the opposite. They are anomalous ergo they are special, strange, and unusual. This isn’t normal. There isn’t a “history of warming” because marine heat waves bleach reefs, kill marine life, cause toxic algae blooms, and many more ills. If it were “normal”, our seas would be empty. I like our seas having life.
        peoplefromibiza 3y ago
        > they haven’t, since 2010 it was unheard of the rate of ocean warming has doubled, and marine heatwave events have doubled in frequency since 1982 it seems to me that marine heatwaves were heard of before 2010... the current marine heat wave in the Gulf of Mexico is mostly caused by El Niño, which is not a human made phenomenon. > They are anomalous ergo they are special No they aren't, just like hurricanes, they are anomalies compared to good everyday weather for humans but they aren't special, they are common phenomena. Common on a planetary scale can mean that two events are separated by thousands or millions of years. For example: ice ages or mass extinction events are common on planet Earth. Given enough time, they will happen. > There isn’t a “history of warming” there actually is. We simply weren't there and can only somewhat infer what happened. Ocean temperatures today are about the same as they were more than 100,000 years ago I'm not saying global warming is not happening and that it's not human made, I'm simply saying that there have been periods during the 4.543 billion years of existence of this Planet where oceans have been as warm or warmer than now. They were full of life as well, a life different from the one we know now, but life nonetheless. 4.543 billion years means that there have been 44,533 100,000 years ago how many 10 years ago is that?
- distortionfield 3y ago
  So you’re telling me you think the spike in water temperatures, that just so happens to coincide with all the other oceanic warming observed in the world at the same timeframe, and that’s widely attributed to anthropogenic climate change, wasn’t actually caused by anthropogenic climate change? You’re fooling yourself homie.
  - peoplefromibiza 3y ago
    I guess he's saying that humans existed in 2015 too when crab population spiked. in the past 10 years temperatures went up ~1 degree Celsius, not 3 and in the ocean it only went up 1.5 degrees since 1901 or 0.17 degrees every decade on average. the researchers say the dramatic increase in population led to competition for food that resulted in the crabs starving to death because there wasn't enough food for everybody.
ixtli 3y ago
Observe how the top comments in here leave a climate-change shaped hole in the discourse. Sigh.
- ramesh31 3y ago
  The "it's all cyclical" crowd out in force
dfc 3y ago
I like to think the comment was down voted because it barely (if at all) answered why the crabs died. I hope the comments and discourse on HN are better than one word answers.
marcellus23 3y ago
Because it's a lazy quippy one-word comment that doesn't really add anything to the discussion.

refurb 3y ago

Considering how global warming has been happening for close to a century, but the crab population "boomed" in 2015 suggests it's not so simple.

RandallBrown 3y ago

Heat waves have existed long before human caused climate change. This article doesn't make any conjecture about the cause of the heat wave either.

reactordev 3y ago
Heat waves don’t exist in the ocean bro. Current temps are pretty bound to -1/1 degree. Any heat wave in the ocean is directly a result of man made climate change.
- peoplefromibiza 3y ago
  heat waves are pretty common in the oceans. from NOAA website The current Gulf of Mexico marine heat wave has been present for several months, beginning in February/March of 2023. NOAA’s experimental marine heat wave forecasts indicate a 70-100% chance that extreme ocean temperatures will persist in the southern Gulf of Mexico and Caribbean. [...] The ocean absorbs 90% of the excess heat associated with global warming. As a result, we know that marine heat waves all over the planet are becoming warmer over time. The absolute temperature of the current event is warmer because of climate change, but it would have likely still occurred without climate change
  - reactordev 3y ago
    no, they aren't. "Present for several months" does not make one common. Their forecast is grim. Yet you say it's "common".
    - peoplefromibiza 3y ago
      actually, they are Currently, nearly 50% of the global oceans meet the criteria for a marine heat wave, periods of anomalously warm ocean temperatures that are higher than 90% of the previous observations for a particular date they are now more frequent because of climate change, but they were common in the past too. common as in "not in any way special, strange, or unusual" "Present for several months" is common too for marine heat waves, they cover very large surfaces so they can persist for weeks to months or even years, and occur at subsurface levels
      - reactordev 3y ago
        Ugh, the fact that there IS a heat wave in the ocean currently is catastrophic. Not that they are common, not that they have occurred in the past (they haven’t, since 2010 it was unheard of). This is warming. You say it’s not in any way special yet you are quoting from a source that says the opposite. They are anomalous ergo they are special, strange, and unusual. This isn’t normal. There isn’t a “history of warming” because marine heat waves bleach reefs, kill marine life, cause toxic algae blooms, and many more ills. If it were “normal”, our seas would be empty. I like our seas having life.
        peoplefromibiza 3y ago
        > they haven’t, since 2010 it was unheard of the rate of ocean warming has doubled, and marine heatwave events have doubled in frequency since 1982 it seems to me that marine heatwaves were heard of before 2010... the current marine heat wave in the Gulf of Mexico is mostly caused by El Niño, which is not a human made phenomenon. > They are anomalous ergo they are special No they aren't, just like hurricanes, they are anomalies compared to good everyday weather for humans but they aren't special, they are common phenomena. Common on a planetary scale can mean that two events are separated by thousands or millions of years. For example: ice ages or mass extinction events are common on planet Earth. Given enough time, they will happen. > There isn’t a “history of warming” there actually is. We simply weren't there and can only somewhat infer what happened. Ocean temperatures today are about the same as they were more than 100,000 years ago I'm not saying global warming is not happening and that it's not human made, I'm simply saying that there have been periods during the 4.543 billion years of existence of this Planet where oceans have been as warm or warmer than now. They were full of life as well, a life different from the one we know now, but life nonetheless. 4.543 billion years means that there have been 44,533 100,000 years ago how many 10 years ago is that?
distortionfield 3y ago
So you’re telling me you think the spike in water temperatures, that just so happens to coincide with all the other oceanic warming observed in the world at the same timeframe, and that’s widely attributed to anthropogenic climate change, wasn’t actually caused by anthropogenic climate change? You’re fooling yourself homie.
- peoplefromibiza 3y ago
  I guess he's saying that humans existed in 2015 too when crab population spiked. in the past 10 years temperatures went up ~1 degree Celsius, not 3 and in the ocean it only went up 1.5 degrees since 1901 or 0.17 degrees every decade on average. the researchers say the dramatic increase in population led to competition for food that resulted in the crabs starving to death because there wasn't enough food for everybody.

ixtli 3y ago

Observe how the top comments in here leave a climate-change shaped hole in the discourse. Sigh.

ramesh31 3y ago
The "it's all cyclical" crowd out in force

dfc 3y ago

I like to think the comment was down voted because it barely (if at all) answered why the crabs died. I hope the comments and discourse on HN are better than one word answers.

marcellus23 3y ago

Because it's a lazy quippy one-word comment that doesn't really add anything to the discussion.