AM
Australian Food Web
(2019)
SNC 1D
Name: ________________________
An Australian Food Web:
Dingo
Month
The Dingo is a skilled predator - its diet is composed largely
of mammals such as kangaroos, wallabies, wombats, rabbits
and echidnas. Birds, reptiles, insects and fruit may also be
eaten.
Red Kangaroo
Red Kangaroos are a migratory species that move about and
can be found across most areas of Central Australia. They
show a preference for open plains where shade trees are
available such as Mulga and Mallee Shrub. They feed on
grasses and other small plants, mostly at night, but also in
the early morning and late evening. Although considered
common, numbers can drop in times of drought. During
these times they may have to compete with sheep and cattle
for food and may also fall prey to dingoes as rabbit
populations decline.
Problems:
A university student was studying the animals in the Grant
Memorial National Park. Following are the numbers of
kangaroos and dingoes that were recorded visiting a watering
site in the middle of the park over two years.
Kangaroo
Dingo
population population
estimate
estimate
January
111
16
February
109
18
March
93
21
April
91
17
May
90
16
June
86
14
July
89
12
August
94
9
September
98
11
October
105
13
November
121
15
December
125
16
January
130
16
February
124
19
March
113
23
April
108
24
May
99
20
June
95
19
July
97
15
August
100
14
September
106
11
October
109
13
November
113
14
December
111
18
Convert the figures into a line graph by plotting the animal numbers on the vertica l axis against
time on the horizontal axis. Plot the kangaroo numbers and the dingo numbers on the same
graph but use different colours for each line.
1
SNC 1D
Name: ________________________
An Australian Food Web
1. Use the data on the HUB to create a LINE graph for each population. Plot the kangaroo
numbers and the dingo numbers on the same graph but use different colours for each line.
Plot the month along the x- axis, the Kangaroo population along the LEFT Y-axis and the
Dingo population along the RIGHT Y- axis. Use a di fferent scale for the kangaroo and dingo
populations.
2. D esign a food web for this ecosystem. Be sure to include dingos, kangaroos, grass, rabbits,
sheep, cattle, shrubs, wallabies, wombats, echidnas, birds, reptiles, insects, fruit trees.
Refer to the table below to see what eachanimal eats (don’t add any more organisms).
Animal
Dingo
Kangaroo
Rabbit
Sheep
Cattle
Wallabie
Food/Prey
Kangaroo, wallabies, wombats, rabbits, echidnas, birds, reptiles,insects, fruit
Grass, shrubs
Grass, fruit
Grass
Grass
Grass, leaves, fruit
Reflect in ePor!olio
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