Global extinctions and the fate of native peoples in degraded ecosystems

When talking about extinctions of species or ecosystems, as it is now being done dramatically  and globally, it is useful to resort to geology that shows us how these processes occur throughout the history of the planet.
First of all you have to understand the immense dimension of geological time, species emerge and become extinct in processes that can last thousands or millions of years. 
The same goes for ecosystems. When natural conditions change, for example climatic conditions, entire ecosystems disappear and others take their place.
Secondly, it should be noted that extinctions occur periodically. Sometimes they affect a few species, at other times in geological history many species become extinct simultaneously. In most cases we do not know for sure what were the causes that caused them.
On the other hand, extinctions can be regional, that is, they can affect certain geographical areas, excluding others that were left out of the extinction process.
An example is the development and disappearance of forests. Forests perished several times in geological history. Now it is human action, before they were natural causes.
For example, the ferrified sandstones of the Palace in Uruguay (formation of the Upper Cretaceous modified by the tropicalization in the Eocene) formed under jungle approximately 60 million years ago and stopped forming and /or disappeared about 55 million years ago. This happened many times and in different places.
In other words, for terrestrial ecosystems, extinctions are not a novelty and the Earth, as a supra-biological organism, recovers as soon as the circumstances or aggressions end (these "aggressions are characteristic of human societies and which are currently the product of wild capitalism operating in countries that are called "Third World").
In the last three millennia, 10 or 15% of the global forests were eliminated (for example, the forests of the Mediterranean region that suffered degradation processes from 1,000 BC and the Modern Age).
However, the great destruction of forests and jungles began much more recently.
In Europe it happened in the 19th century, in North America at the end of the 19th century and the beginning of the 20th century. Then it was the turn of the rainforests that are being felled or burned at a great pace (tropical Africa, Amazonia, New Guinea, Malaysia, etc.).
At the same time, it must be borne in mind that for Earth the ecological changes are not a drama but for many species and peoples that inhabit it they can be.
Often, with the jungles and forests, the elimination of the existence and native cultures of the forestry peoples occurs at the same time, as many Amazonian native communities or Papuans in New Guinea are experiencing.
At the same time, it is good to remember that many forests, for example, boreal forests, have survived with few modifications due to their lower agricultural potential or economic utility, in them the degradation is usually caused by mining operations, hydroelectric dams and logging companies. 
In that context, native peoples of the boreal forests are also being attacked in various ways, sometimes in a more subtle way (as is the case of the indigenous peoples of Canada or Siberia).
For this reason, we consider that in addition to the environmental effects, the degradation, disappearance or productive reformulation of forests affects mainly peoples who live there, and that in those places have developed their identity and cultures. The process have dramatic effects on their quality of life and often end causing their effective physical and cultural extinction.