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Copy of ECOSYSTEMS- Australian food chains and food webs

Defining terms and providing examples

Taylor Hunter-Boyd

on 23 July 2013

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Transcript of Copy of ECOSYSTEMS- Australian food chains and food webs

b. Describe, using examples of food chains and food webs from Australian ecosystems how producers, consumers and decomposers are related.
What is a Food Chain?
Important Terms
More Terms
A producer is capable of producing their own energy through the process of photosynthesis (using light energy and CO2 they produce Organic compounds). for example plants and algae are producers.
An organism that generally obtains food by feeding on other organisms or organic matter, for example both Insects, Snakes and kookaburras are all consumers
A decomposer organism feeds on dead or decaying organisms, it recycles nutrients by performing the natural process of decomposition. Examples of decomposers are fungi and bacteria. They break down cells of dead plants and animals into simpler substances, which then become organic nutrients available to the ecosystem.
Autotrophs are the producers in a food chain, such as plants on land or algae in water
A herbivore is an animal that consumes only vegetation (plant material) as a source of obtaining energy, such a grasshooper or wombat
An animal or plant that requires a staple diet consisting mainly or exclusively of animal tissue through predation or scavenging. An animal Examples of a carnivores is a dingos. while the Venus flytrap is a well known carnivorous plant.
An omnivore is an animal that feeds on both plants and animals to obtain food energy, for example a crow
is an Ecosystem?
An ecosystem is a community of plants,
animals and smaller organisms that live, feed,
reproduce and interact in the same area or
An Example of an
Australian Food Chain
A Food Chain is feeding hierarchy in which organisms in an ecosystem are grouped and shown in a succession to represent the flow of food energy and the feeding relationships between them.
Note the direction of the food chains arrows.
Food Chain arrows show the directional flow of materials and energy. NOT what eats what!


Brown Snake
Wedge tailed

Producer / Autotroph
Consumer / Herbivore
Consumer / Omnivore
Consumer / Canivore
Consumer / Canivore
An Example of
an Australian
Food Web
What is a
Food Web?
A food web is many food chains linked together to show a more accurate model of all possible feeding relationships of organisms in an ecosystem.
List the following from the Australian food web;
The top carnivores,
The remaining carnivores,
The herbivores,
And the producers.
Whats next?
Construct your own;
Food chain on coloured paper- using a combination of hand drawing and cut outs from handouts.

than when we are in Lab 4 we will create a food web on yourself and your own personal eating habits
Examples of types of ecosystems you can draw your inspiration from inculde;
or even Urban
By Thomas Hartshorn
Something to take away!!
key terms to remember
Full transcript