Why is it so difficult for species to leave their ecological niche?

Despite this, it has a similar size and ecological niche.

They have their ecological niche there and make out fine until summer returns.

It is often the largest predator in its ecological niche.

Their ecological niche appears to be that of an insect.

It is perfectly capable of living in its ecological niche.

The majority of species exist in a standard ecological niche.

Old ecological niches were destroyed in the process and new ones opened up.

If there is an open ecological niche, some organism will move to fill it.

They have evolved to fill a number of different ecological niches.

The interactions between the person and environment result in the construction of the individual ecological niches.

It occupied the same ecological niche as dogs and cats today.

This gives them access to a whole ecological niche with minimal competition from other groups.

In the most unlikely ecological niche, on almost every world, we find something that qualifies as living matter.

Well, it turns out that we're the ecological niche for dogs, and exploit us they do.

Unfortunately, during the middle part of the twentieth century, this important ecological niche was destroyed.

The relationship between animals and their ecological niches has been firmly established.

They seem to occupy a similar ecological niche to hares.

Rather, they were a sister group that remained in the ecological niche of their common ancestor.

Species restricted to one ecological niche would also pose no threat.

This type of competition is only found when two different species share an ecological niche that they must compete over.

The two species fill the same Ecological niche in their respective ranges.

Evolution had filled ecological niches not yet dreamed of on Earth.

Our would-be visitor may have evolved for too specific an ecological niche.

Its ecological niche is frequently compared to that of a flying squirrel.