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Hunter-gatherers introduced fish to a mountain lake 7000 years ago

newscientist.com

11–20 of 130 posts

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#11
post #8

Earlier quoted context omitted.

I've had a pond for 11 years that has not acquired fish. It existed before that, too, but I'm not sure for how long (I think several decades). It has lots of amphibians and snakes. Rarely any birds.

Maybe the snakes have been eating the fish eggs / baby fish?

The bullfrogs are the big carnivores, and sure, maybe.

Snakes are active but I doubt they eat nearly as much as the bullfrogs.

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#12
post #6

I thought bird poop was the commonly accepted explanation 7000 years ago is the edge of recorded human civilization (well 8000 years, I remember this because it's also the edge of a gamma ray burst in light years that could destroy all life on earth after traveling all that time)

> 7000 years ago is the edge of recorded human civilization (well 8000 years

The earliest pre-pottery Neolithic complexes are nearly 4000 years older than that.

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#14
post #9

Yes. One thing that becomes very obvious if you go along "native" human villages in Africa is the reason civilization develops. When you look at villages that don't grow, but do the normal human thing. Grow, war (2 kinds: young vs old and village/tribe vs village/tribe), grow. It's not because of agriculture. They have agriculture (they grow maniok, and you don't need much. They have fire, weapons, ... Also the entir…

[deleted]

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#15
post #6

I thought bird poop was the commonly accepted explanation 7000 years ago is the edge of recorded human civilization (well 8000 years, I remember this because it's also the edge of a gamma ray burst in light years that could destroy all life on earth after traveling all that time)

> 7000 years ago is the edge of recorded human civilization (well 8000 years The earliest pre-pottery Neolithic complexes are nearly 4000 years older than that.

Did they have writing and kept records that we've found? That's the "recorded" part.

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#16
post #2

> That is the only possible explanation for how fish could have populated isolated mountain lakes isn't that a common question? "How do fish appear in landlocked lakes/ponds/etc"? After digging a pond and letting it fill with rainwater/groundwater, fish appear. I don't think its because people carried them there. (don't really know the common answer though)

Mountain lakes are completely different.

There’s fish eggs being washed everywhere during rain storms. The eggs come from upstream and wash into random places.

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#17
post #9

Yes. One thing that becomes very obvious if you go along "native" human villages in Africa is the reason civilization develops. When you look at villages that don't grow, but do the normal human thing. Grow, war (2 kinds: young vs old and village/tribe vs village/tribe), grow. It's not because of agriculture. They have agriculture (they grow maniok, and you don't need much. They have fire, weapons, ... Also the entir…

Great point until the end. None of your descriptions imply a lack of morality for living isolated from a greater civilization. If anything, such small societies inhabit a neutral position, in that they don't care, which is something you already stated.

I think the only people arguing that the North Sentinelese are immoral are religious, for instance (hence why most attempts to visit are done by missions). The general consensus is otherwise awe for being separated from the rest of us, relatively unmolested.

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#19
post #17
post #9

Yes. One thing that becomes very obvious if you go along "native" human villages in Africa is the reason civilization develops. When you look at villages that don't grow, but do the normal human thing. Grow, war (2 kinds: young vs old and village/tribe vs village/tribe), grow. It's not because of agriculture. They have agriculture (they grow maniok, and you don't need much. They have fire, weapons, ... Also the entir…

Great point until the end. None of your descriptions imply a lack of morality for living isolated from a greater civilization. If anything, such small societies inhabit a neutral position, in that they don't care, which is something you already stated. I think the only people arguing that the North Sentinelese are immoral are religious, for instance (hence why most attempts to visit are done by missions). The general…

I do not think anyone is arguing the Sentinelese are immoral?

Re: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

#20
post #16
post #2

> That is the only possible explanation for how fish could have populated isolated mountain lakes isn't that a common question? "How do fish appear in landlocked lakes/ponds/etc"? After digging a pond and letting it fill with rainwater/groundwater, fish appear. I don't think its because people carried them there. (don't really know the common answer though)

Mountain lakes are completely different. There’s fish eggs being washed everywhere during rain storms. The eggs come from upstream and wash into random places.

How did they appear upstream?
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