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    [–] Insects could vanish within a century at current rate of decline, says global review k1703 0 points ago in science

    I certainly agree but I provided my evidence when you asked for it. Is there something wrong with saying that there are similarities given the evidence I presented?

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 0 points ago in science

    So then what are your thoughts on the matter and what evidence would you base it on? And what is lacking in the data aside from information that is currently unavailable because our dating techniques aren't precise enough (yet?)?

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 2 points ago in science

    I wouldn't say it's impossible to handle. These things do take a long time to happen and I do think that as a species we'd survive a long time. It would be more of a question of the state of civilization. I'm far from qualified to predict what we'll discover, what we'll do with it and what the results will be. As for life on Earth as a whole - it survived glaciation and all sorts of nastiness we probably currently couldn't so I wouldn't be worried. And the only threat to this hunk of rock as a whole is from space.

    While I agree that there were a lot of factors, there seems to a be a pattern of greenhouse gas driven temperature increases. I can understand arguing that ocean eu/anoxia would be outside this feedback loop since it can be dated to a longer period surrounding the PT boundary. But the rest seems to feed back into itself to increase temperatures past the tipping point for many life forms and a subsequent collapse of food chains.

    I appreciate your point that exaggerating climate change is not helpful, and I would agree. This is just my understanding of the PT event and the current situation. And of course that history has a lot to teach us.

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 0 points ago in science

    Not a continent of lava at once. The Siberian Traps activity released about 3 * 10^6 km^3 of basalt over the ~1 million years. Along with this, an estimated 18000 GtC would have been released. Over a million years this is 0.018 GtC/year [1]. We're at about 10 GtC/ year [2]. Dust and ash leave the atmosphere much faster than CO2 and have an impact on a much shorter time scale. They would have lowered temperatures for a few decades probably.

    [1] https://www.le.ac.uk/gl/ads/SiberianTraps/PDF%20Files/The%20Siberian%20Traps%20and%20the%20End-Permian%20mass.pdf

    [2] https://www.epa.gov/ghgemissions/global-greenhouse-gas-emissions-data

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 0 points ago in science

    Last I read, meteors were considered unlikely to be part of it. As for the volcanic activity, I would compare it to anthropogenic CO2 emissions since, as best as I can tell, CO2 emissions were the major impact of the Siberian Traps activity on life in the end-Permian.

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 17 points ago in science

    Sure, but the P-T event occurred over 10s of thousands of years. I can't say I've seen any predictions for events on that time scale and I don't find it hard to imagine that the processes we may set in motion won't make things just as bad if not worse. We're emitting CO2 far faster than the volcanic activity of the Permian and we have plenty of methane hydrates lying around. And while we may not end up emitting enough CO2 to heat up the environment as much as in the Permian we don't know exactly what caused what in which order. And, ultimately, it's more to do with an abrupt increase in temperature than anything else.

    Do feel free to correct my misconceptions...

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 3 points ago in science

    My point wasn't about how long it would take for life to bounce back. Sorry if that wasn't clear or if I'm missing something though...

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 1 points ago in science

    From what I understand, the consensus is that a number of different things occurred all leading back to a problem of greenhouse gases and global warming.

    • Volcanic activity from the Siberian traps has been dated to around that period. This would have put metric shit tons of CO2 into the atmosphere. But not enough to account for the whole thing (IIRC it could account for about half the increase in temp - I would have to go reread my sources). The thing to note about this volcanic activity is that it occurred frequently enough that it tipped the balance between the rate at which CO2 was sequestered and the rate at which it was being emitted so it built up in the atmosphere.
    • Oceans were running low on oxygen for a ~20 million year period around P-T boundary. I forget the details of how it worked but it's thought to be a combination of increased temperatures causing the oceans to form layers that wouldn't mix and how the currents were laid out around Pangea.
    • Clathrate Gun - Increased temperatures causing methane that was trapped in ice to be released. Methane is more potent than CO2 but fortunately(?) it would react to form CO2. Still more greenhouse gases.
    • Around this time, Methanosarcina evolved a more efficient pathway for the reaction that generated methane. While I don't understand the evidence for the genetics, it supposedly used nickel to catalyze the reaction and an increase in nickel was noted in sediments dated to the P-T event.

    All in all, enough greenhouse gases were emitted that it raised the temperatures to a point where ~95% of all species we know existed in the Permian cannot be found in the Triassic. Hopefully someone who knows more about this will correct me if I'm wrong but that's my understanding of the whole thing.

    tl;dr - greenhouse gases made the world really hot and that fucked shit up.

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 14 points ago in science

    Do we have a record of the change in diversity over the GOE? I would have thought that we'd have a very uncertain picture going that far back especially since life was prokaryotic.

    I would consider myself a layman in this field so I'm happy to be schooled :P

    [–] Insects could vanish within a century at current rate of decline, says global review k1703 209 points ago in science

    The big daddy of mass extinctions was never the dinos. That title goes to the P-T extinction which is unfortunately very similar to what we have today...

    [–] What is something that you think about often but never talk about? k1703 23 points ago in AskReddit

    You would be woken up by cats falling on you from the ceiling every morning?

    [–] Post your MAL and have others tell you which Anime on your PTW to watch next. k1703 2 points ago in anime

    After watching a sad anime like that, I'd say go for gekkan shoujo nozaki-kun for the fun comedy SoL. That or Danshi Koukousei no nichijou since you like nichijou so much.

    [–] Post your MAL and have others tell you which Anime on your PTW to watch next. k1703 2 points ago in anime

    Gotta watch spice and wolf. A bit of a more serious SoL than what's at the top of your list but totally worth the watch. For a darker show, I would say shinsekai yori based on your 10s for madoka and steins;gate.

    [–] Try to sum up a character in a single picture k1703 3 points ago * (lasted edited 2 years ago) in anime

    Madoka Magicka spoilers

    Edit: spoilers my bad T.T

    On a side note, anyone know how to put a hyperlink within a spoiler tag?

    [–] The Boston Major k1703 1 points ago in DotA2

    FeelsWickedSickMan

    FTFY

    [–] [OC-AHFY] Gravity Wraiths (pt 8) k1703 3 points ago in HFY

    Cool! I'm totally happy to do that, especially since it occurred to me that it may be a "things are not as they seem" thing as well. In fact, I almost didn't post because of that but hey, nit-pickers gonna nit-pick.

    I do think that the drama is definitely one of the high points of the series, so I can safely say that, as far as I'm concerned, you're doing a great job :)

    Also I must thank you for taking the time to parse my comment through all the typos and bad english. I just got back, read it, and died a little inside (I'm a native speaker so it's just that much worse) >.>

    anyhoo -- keep up the good work and more importantly, enjoy your vacation!