- Nov 11, 2019
"Almost assuredly"? Such an event has no evidence and little rationale - apart from the large mass extinctions evolution is gradual - so the asserion goes in the other direction.This article ignores lots of scientific facts. The correlation of human migration and the extinction of many large species of Fauna is almost assuredly due to a catastrophic earth event...comet, asteroid, solar radiation event.
Not quite that far back - and I also note that the North American megafauna extinction was unique - but it seems from Wikipedia that I may be wrong and the science has started to come down on one primary forcing for recent megafauna extinction. FWIW:I would add that this theory is the best I've seen and undoubtedly accurate and also suggests that the human impact is responsible for ALL extinctions going back to the newly updated beginning of tool use at 3.2 million years.
The Holocene extinction (see also Quaternary extinction event), occurred at the end of the last ice age glacial period (a.k.a. the Würm glaciation) when many giant ice age mammals, such as woolly mammoths, went extinct in the Americas and northern Eurasia. An analysis of the extinction event in North America found it to be unique among Cenozoic extinction pulses in its selectivity for large animals.(Fig. 10) Various theories have attributed the wave of extinctions to human hunting, climate change, disease, a putative extraterrestrial impact, or other causes. However, this extinction near the end of the Pleistocene was just one of a series of megafaunal extinction pulses that have occurred during the last 50,000 years over much of the Earth's surface, with Africa and southern Asia (where the local megafauna had a chance to evolve alongside modern humans) being comparatively less affected. The latter areas did suffer a gradual attrition of megafauna, particularly of the slower-moving species (a class of vulnerable megafauna epitomized by giant tortoises), over the last several million years.
Outside the mainland of Afro-Eurasia, these megafaunal extinctions followed a highly distinctive landmass-by-landmass pattern that closely parallels the spread of humans into previously uninhabited regions of the world, and which shows no overall correlation with climatic history ...
After ruminating on these posts and the topic, I am compelled to reverse course and agree with @Spike0311 to some extent and consider the possibility that some of the most significant extinction events, at least in the northern hemisphere during the retreat of the glaciers was not primarily driven by human activities. For instance, fires have been cited as a man-made force of extinctions, but surely many of these were formed by lightning strikes if the conditions for massive fires were even right. Most are compelled to believe the native inhabitants would have valued the forests for its bounty of food, and avoided burning them down.There were simply not enough humans on the planet 12,000 years ago to kill off the millions of mammals that died.