Module 7. Populations in ecosystems
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What is a community?
All the populations of different species living in the same place (habitat) at the same time.
What is an ecosystem?
A community and the non-living (abiotic) components of its environment. Ecosystems can range in size from **very small **to very large. They are **dynamic **systems (populations rise / fall over time).
What is a niche?
● The specific role of a species within its habitat, eg. what it eats, where and when it feeds ● Governed by its adaptation to both abiotic (non-living) and biotic(living) conditions
Explain the advantage of species occupying different niches
● Less competition for food / resources ● If two species tried to occupy the same niche, one would **outcompete **the other
What is carrying capacity?
The maximum (stable) population size of a species that an ecosystem can support.