Yr 10 EB Notes 6, 2013
1
Coghlan
Earth and Beyond Notes 6
Ecosystems
View the video Introducing
ecosystems and write your
understanding of the
following terms whilst the
video plays.
After the introductory video,
use Science Aspects 1 text
book, page 190 -191 to give
accurate definitions for the
following terms:
Term
Ecosystem
Habitat
Population
Community
Environment
Biotic Factors
Abiotic
factors
Ecology
My understanding from
video
Accurate book
definition
Yr 10 EB Notes 6, 2013
2
Coghlan
Biotic vs. Abiotic
Abiotic Factors
Abiotic factors are those non-living ____________ and ____________factors which
affect the ability of ____________to ____________and ____________.
Some abiotic factors include:
1.
2.
3.
4.
5.
6.
7.
Abiotic factors ____________in the environment and determining the
____________and ____________of organisms that exist in that
environment. Factors which determine the types and numbers of organisms of a
species in an ecosystem are called ____________factors. Many limiting factors
restrict the ____________of populations in nature. An example of this would include
the low annual average ____________common to the Arctic which restricts the
____________of trees, as the subsoil is permanently ____________ .
Biotic Factors
Biotic factors are all the ____________things or their materials that
____________or indirectly affect an organism in its environment. This would
include organisms, their ____________, parts, ____________, and wastes.
Some biotic factors include:
1.
2.
3.
Yr 10 EB Notes 6, 2013
3
Coghlan
Biomes
Ecosystems can be small, covering an area such
as a pond or a beach or covering a much larger
area such as a jarrah forest. The world is divided
up into five major ecosystems – these are called biomes.
The 5 biomes of the world are:
You are to choose one biome from the list and write notes on it under the following
headings.
Biome Name
Biome location
Names of two habitats in your biome
Names of two communities in your
biome
Names of two populations in your biome
List of biotic factors in your biome
List of abiotic factors in your biome
Yr 10 EB Notes 6, 2013
4
Now move on and find the same information about another two biomes.
Biome 2 Name
Biome 2 location
Names of two habitats in biome 2
Names of two communities in biome 2
Names of two populations in biome 2
List of biotic factors in biome 2
List of abiotic factors in biome 2
Biome 3 Name
Biome 3 location
Names of two habitats in biome 3
Names of two communities in biome 3
Names of two populations in biome 3
List of biotic factors in biome 3
List of abiotic factors in biome 3
Australian biomes are similar
Ctrl click on the title or diagram to find out what they are.
Different biomes have different populations and
communities
Coghlan
Yr 10 EB Notes 6, 2013
5
Coghlan
The importance of abiotic factors in a freshwater ecosystem
1.
(a) List the chemical abiotic factors tested in the freshwater ecosystem.
(b) List the physical abiotic factors in the freshwater ecosystem.
2.
Comment on the biological significance of each of the abiotic factors listed (i.e.
how each factor affects the biology and hence survival of a pond organism).
(a) light availability
(b) pH
(c) temperature (oC)
(d) mineral ions
(e) dissolved oxygen (D. O2)
(f) turbidity/currents
Yr 10 EB Notes 6, 2013
3.
6
Coghlan
Data collected from the freshwater ecosystem was graphed as shown.
(a) Why does dissolved O2 increase as light increases?
(b) Why does the pH of the water increase (i.e. become less acidic) as light
intensity increases?
(c) (i) Describe the relationship between pH and dissolved O2.
(ii) How does the activity of organisms in the freshwater ecosystem
influence this relationship between pH and dissolved O2?
(d) On the graph above draw a line to represent the metabolic rate of the coldblooded animals sharing this freshwater ecosystem.
Habitat quiz Choose the Google Earth Species Quiz