I often see the idea being spread that according to nature-focused religious traditions everything everything exists for an essential role, be it ecological, spiritual or otherwise. And that this causes nature to be harmonic and good because everything lives according to that role. This idea assumes a top-down teleological plan imposed by a creator on the world to create a greater system for some purpose. This idea may be present in some such worldviews, but it's often generalized to all indigenous cosmologies.
These ideas are often ascribed to an indigenous tradition in ethnographies written by predominantly Cristian scholars or scholars from a Christian cultural background during the last few centuries. This is ascribed to those worldviews based on assumptions; an inability to imagine a worldview that is too different from what they know; or from an (imperialistic) idea in which they believe that the people whose culture they describe are actually mistaken about their own worldview, and that the scholars know better. So, they 'correct' or punctuate their ethnographies with their own ideas .
The ideas of essential roles is often given more prominence in modern reinterpretations under influence of said ethnographies and people returning or coming to an indigenous tradition from a Christian background, taking teleological ideas with them.
In Tengerism, and other North and Inner Asian traditions, many people will say that they belong to the place they live and play a role in nature. They cut wood, hunt, herd reindeer, etc. in turn in the clearings new plants will grow, their reindeer graze. Their actions ripple across the ecosystem.
When the local humans leave the local nature will change, different plants grow, other animals increase in numbers, and this too ripples across the ecosystem. This change is often catastrophic and causes strife for many beings.
The balance is called tegsh. All actions even out, so that they don't take more than they return; sometimes directly, often through cycles and a web of connections. Trees grow with nutrients from the soil; fungi break down trees and return the nutrients to the soil. Grouse is hunted by humans; humans herd reindeer; reindeer clear brush and grass; young plants can grow; plants feed Grouse.
So that there is a cycle and the system can exist in perpetuity.
Tegsh is not because every being lives according to a essential role or purpose, but because that's the equilibrium the world has settled in. A disruption of tegsh leads to strife and turbulence, but in that turbulence eventually a new equilibrium will be settled. But there is no guarantee that this equilibrium is found while preserving all beings that were there before. A slower change will allow the location's tegsh to adjust gradually.
If humans decide to abandon a region and move to another region, they'll disrupt both the regions they leave and enter. So such a move should be done carefully, but it's not impossible, humans are not essential to a region, only essential to an equilibrium at that moment. If humans decide to pump up a lot of oil and burn it without thinking of a way to leave things as they found them, the climate and ecosystems will change leading to strife.