41620
Description
Mind Map by olivia.paddock, updated more than 1 year ago
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Created by olivia.paddock
about 11 years ago
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Biotic/Abiotic Factors
- Abiotic Factors
- Definition
- Non-living parts of an
ecosystem which are important
in determining the type of
organisms found in habitats.
- Non-living parts of an
ecosystem which are important
in determining the type of
organisms found in habitats.
- Examples of Abiotic Factors
- Temperature
- Use a thermometer to find this out.
- Use a thermometer to find this out.
- pH soil
- Use a pH meter to find this out.
- Use a pH meter to find this out.
- Light Intensity
- Use a light meter to find this out.
- Instructions on
how to use a light
meter.
- 1. Push the switch onto the light position.
- 2. Place the light meter on the surface of the ground so that the
light sensor is pointing towards the brightest light source.
- 3. Make sure that you shadow isn't covering the light meter.
- 4. Examine the meter readings while the
meter is in this position. Use the bottom
scale (A-H).
- 1. Push the switch onto the light position.
- Precautions
you must take
when using a
light meter.
- Take recordings at the same time of the day.
- Make sure that the light meter is not under a
tree or in the shadow of a building.
- Take more than one reading.
- Take recordings at the same time of the day.
- Instructions on
how to use a light
meter.
- Use a light meter to find this out.
- Moisture Levels
- Use a moisture meter to find this out.
- Instructions on how to use
a moisture meter.
- 1. Push the switch onto the moisture position.
- 2. Carefully place the probe vertically into the soil so it is about 4cm deep.
- 3. If you hit a stone, take out the probe and put it in a slightly different position.
- 4. Examine the readings whilst the probe is in the soil. Use the top scale (1-8)
- 1. Push the switch onto the moisture position.
- Precautions
you must take
when using a
moisture meter.
- Don't force the probe into the ground if it is really dry.
Use a tent peg to create a hole if this happens.
- Make sure that the probe is in the ground at the correct depth.
- Keep the probe in the ground when reading the scale.
- Take more than one reading.
- Don't force the probe into the ground if it is really dry.
Use a tent peg to create a hole if this happens.
- Instructions on how to use
a moisture meter.
- Use a moisture meter to find this out.
- Temperature
- Definition
- Biotic Factors
- Definition
- Living parts of an organism
which are important in
determining the type of
organisms found in habitats.
- Living parts of an organism
which are important in
determining the type of
organisms found in habitats.
- Examples of Biotic Factors
- Quadrat
- Marks off a small piece on the ground so
that different plants in the sample can be
identified and counted.
- A quadrat can also measure abundance.
- The quadrat must be dropped randomly.
- Marks off a small piece on the ground so
that different plants in the sample can be
identified and counted.
- Pitfall Trap
- Instructions on how to use
- 1. Dig a hole in the ground deep enough
to hold an empty yoghurt carton.
- 2. Place an empty carton into the hole, making sure that
the top of the carton is level with the ground.
- 3. Leave until the next day to look at it.
- 1. Dig a hole in the ground deep enough
to hold an empty yoghurt carton.
- Small animals living on
the ground surface can
be sampled using a
pitfall trap.
- Instructions on how to use
- Quadrat
- Definition
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