HABITATS AND NICHES
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HABITATS AND NICHES. Aim: What are habitats and niChes ?. Habitat:. The area or natural environment in which an organism or population normally lives. humans. animals. living species. plants. A habitat is made of the following:. physical environment. biotic environment.

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Habitat:

The area or natural environment in which an organism or population normally lives.

humans

animals

living species

plants


A habitat is made of the following:

physical environment

biotic environment


A habitat’s physical environment includes the following:

soil

moisture

range of

temperature

availability

of light


A habitat’s biotic environment includes:

availability of food

presence of predators


food

In a habitat, an organism must find…

water

shelter

space



Example of a habitat:

UNDER THE SEA



Ice land

A habitat can be very large or very small. A polar bear’s habitat covers the annual sea ice (vast area of land) and they can be found 200 miles offshore. A barnacle’s habitat can be found on a simple rock, shell or whale.


microhabitat

The term microhabitat is often used to describe small-scale physical requirements of a particular organism or population.


Example of microhabitat:

Log rotting in a forest



What is a niche?

  • A niche is an organism’s role (job) in the ecosystem.

  • It includes what the organism eats, where it lives, and what it does.


Types of niches:

Fundamental niche

Realized niche


FUNDAMENTAL NICHE

can be defined as the range of environmental conditions in which each of the species survives.


REALIZED NICHE

can be termed as the range of environmental conditions in which a species is really found.



Example:

naturally live in forests and eats insects, fruits, and other small creatures

Fundamental niche

raccoons


Example:

An encroachment by humans changes their habitat to an urban environment and they start to live off of our trash and other waste

Realized niche

raccoons



What is the niche of a beaver?

  • A beavers niche in the ecosystem includes:

  • cutting down trees

  • building a dam to flood an area and make a pond

  • building a lodge to live in

  • raising a family of beavers

  • chewing bark and wood


Red-Tailed Hawk & Barred Owl

  • Birds of prey

  • Live in forests on the edge of fields

  • Eat mice and other rodents

  • Nest in trees

Barred owl

Red-tailed hawk



  • If they do, or try to, two species do the exact same thing.there will be competition between the two organisms. One organism will have to change or become extinct.


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