There's no question of what agriculture and aggressive resource exploitation have done to human populations, but that has nothing to do with natural patterns, that's just a weird glitch in the history of our planet, relatively very short term, as the population growth graph below show clearly enough. The resemblance to the behavior of a cancer has been often and I think correctly made, a cancer isn't fitting into a niche, it's a genetic misfiring, a failed experiment, more or less. Ie, it expands, grows, consumes, without consideration of the overall system that supports it, some kind of life form, and then kills it, but it's not a part of that system or niche, it's a disease, consuming the system, and will never result into any cancer successfully occupying its niche long term in an evolutionary sense.
IHuman population was fairly stable for a long while with a much higher death rate than we currently enjoy. We were growing somewhat, along with expanding our range, but it is only the last few hundred years, maybe a dozen generations or two that our population has really exploded. The reason is simply that our niche has changed and we haven't caught up.
You'll note that what you say there is basically completely wrong, which is kind of funny if you think about it, I know that's the doomer peak oil story, but it takes only a few minutes to find that it's wrong using google, took me only 3 tries on google images to find a good graph since I knew I was looking for a logarithmic growth chart, not an arithmetic one (scroll down to see a fine chart, logarithmic). We weren't 'growing somewhat' we were engaging in frequent doublings of global population starting around 5000 BC, not a few hundred years ago, just as we do today, we do it faster today of course, but the overall pattern is the same. I suspect that realizing this issue is much longer term than a few hundred years makes the doomer in us somewhat grouchy and unsatisfied, since, as Greere notes all the time lately, if you want to know our future, just look at our past.
We are destroying niches all over the planet now, there's nothing there to catch up to, we've actually left the natural system that created us, and you can see how much we've left it in the chart below, and how long ago (and once the site software is corrected, you'll even see the population counts at the right side of the chart!!). When you talk about ecological niches, you are talking about essentially local systems, to which the inhabitants adapt. The Inuit for example lived in and adapted very well to their niche, which was similar to the niche occupied by the Siberians they came from, who themselves had adapted well to that type of system. They serve as a good example of humans who were successful at filling a PART of their ecological niche, along with the other creatures around them. In other words, that's an example of living inside a niche, which you can also call sustainable in the true sense of that word, something humans have repeatedly proven themselves in some forms to be totally capable of, despite the myths we create to suggest that's not the case.
Fixing this will involve letting nature rebuild itself, with us as part of it. There's no rule that says this has to happen, if we insist on destroying all the niches we are using up in the end there will be very little left to work with, the more destruction we engage in, the less there will be left to restore to some more sustainable state. And this type of thing doesn't have to be organized or global, and it won't be I would suspect strongly, all that is required is that some people some places do it where they live, just like we did before the modern era, the world was filled with empires that ebbed and flowed, huge regions that were fairly sustainably occupied in other areas, and that's how I suspect our future will look, it will become increasingly regional again, though since we know now roughly where everything is globally, there won't be any real mysteries like we had before the great ages of exploration. I suspect we won't fix it, and will push things as far as they can go before we start running out of resources to build up walls against natural systems, which is going to happen pretty soon.
The bright side is if you have empty spaces in a niche that is recovering, evolution will fill them VERY quickly, it will just take the stuff available and modify it to work better, that happens incredibly quickly, for example, I just saw a nova episode about the coyote/wolf hybrid that is spreading in the US/Canada east coast, it's extremely adaptable to human presence, and can function in a wild state living in urban areas, in fact, they suggested it's not a question of if, but when, that newly evolved species will start to live in new york city itself. The mule deer, I think it was, likewise was an adaptation to human presence in North America, it's much smarter then regular deer, which lets it survive better around a very smart predator like us.
A niche is a web of interdependent parts, you can't actually pull one part out and say, oh, this part would do x if it wasn't in this niche, it's part of the system. Talking about a rabbit out of context to its actual full niche is a pure abstraction that would never happen in nature, that's something science has made up because it's a useful tool if you want to try to exploit nature more, ie, further the non sustainable abuse of our environment, just as talking about a human out of context of human culture and language, and of course, the underlying ecosystems, has no actual referent in the real world.
Modern industrial / agricultural humans seem to have a lot of problems understanding this, since not understanding it is sadly essential if you want to function/prosper in our system, so we've evolved these silly ideas about growth, expansion, etc, which really are just mirrors we can stare into so we can admire ourselves without thinking about what we are actually doing. Not all humans do this, or have done it, but we certainly do.
It's not just burning carbon fuels, however, we were doing fantastically great damage just using wood sailboats, and before that, rowboats (aka, galleys). History is a good thing to learn and read, it's useful to avoid some of the blinders the peak oil doomer stuff imposes as a sort of odd offshoot, that's I think because very few people who follow peak oil stuff actually read much else, particularly not much else that's serious. Some do. This is why I recommend people follow and read John Michael Greere, he at least tries to get the stuff into real contexts, and he usually does a pretty good job of it, within the areas he has time to really delve into.
The over focus on oil, while popular in peak oil sites and circles, ignores what phenomenal damage we did without it, really astounding when you think about it actually. Using basically no coal, the Roman Empire, the Chinese empires, expanded into massive geographical regions, creating empires that changed forms but never really went away, Rome occupied Europe, and Europe is still here today, same with China. Cultures in Egypt and the Americas created massive networks and structures without any modern tools or resources, just labor, animal pulling power, and stone, plus a tiny bit of metal I guess in some cases, not in the Americas though, i believe they made all those cities without metal tools, stone, amazing, not sure about that, I think that's right.
A picture is nice, this is a logarithmic scale of human populations:
thanks:
http://melyawatyrenggayya.blogspot.com/ ... chive.html (original url location gone)
The standard graphs used flatten out too much the early phases because when you have a spike to 7 billion, and ignore all the previous doublings, everything before that looks flat just as the income of 10k or 20k looks flat compared to the income of 100 million, but as you can see clearly in this better scaled one, we've been spiking up LONG before oil or coal. That one suggests 5000 BCE but it's worth remembering population estimates from that long ago are pretty inaccurate, just until the last decades we liked to pretend that the Americas were relatively unpopulated, but latest estimates based on better research suggest at least an order of magnitude higher population in the Americas pre euro contact than we thought before.
Once oil diminishes, and coal gets too hard to extract, ie, probably in the next 100 years or so, the oil / coal fueled population expansion will vanish, but we'll still be hovering around a bit below where we started that phase, since we will have damaged our environment so badly in the process it won't have the same carrying capacity it did before fossil fuel extraction/consumption started.
Once you clarify terms, explain the actual growth, you'll realize that oil isn't the problem, and without oil, we'll still be living in cultures we would recognize, at least anyone who seen any part of the older non suburban US world anyway. Old town parts of Barcelona were made before fossil fuel use became prevalent, and can exist just fine without them, it's amazing what you can do with a craftsman, wood, and stone, why people think that is going to be some horrible fate is beyond me, I suggest a walk down any freeway or suburban street or shopping center, a long walk, before assuming losing that is bad in anyway.
I know Desumaiden is collecting info for some reason on this, not sure why exactly, but just on the off chance he/she is serious, it's worth realizing that we aren't going to 'fix' ourselves, and the problem isn't oil, it's much deeper than that.