Although unlovely and unloved, cockroaches do have a niche. They are scavengers. They eat dead and decaying matter. They rid the world of ecological trash. And their waste is good for the soil.
The ecological role of a quagga is almost identical to a zebra. They are considered a consumer in our ecosystem.
It is a ecological function.
India
gouchie gouchie
The quagga is a consumer.
A niche I think
That is an organism's ecological niche.
Based on the article I've read, it has two main significance: Ecological Significance and Significance in Medical Research.Ecological Significance - cockroaches breakdown nutrients of decaying matters. They play a major role as decomposers too.References:http://yougotme.hubpages.com/hub/Why-Do-Cockroaches-Topple-Over-When-They-Die
There does not seem to be any reason to expect cockroaches to die out; they are a very successful species, however, if they were unexpectedly to die out, their ecological niche would be quickly filled by other scavenging insects, of which there are many.
Thae enviroment
The niche, or ecological role of the Emperor penguin is that they eat fish.
The role of the organism would be a producer.