Topic 2 Distribution Of Organisms Flashcards
What is an Abiotic factor ?
A non-living factor
What is a Biotic factor ?
A living factor
3 examples of abiotic factors :
1 : light intensity
2 : moisture
3 : temperature
3 examples of biotic factors:
1 : disease
2 : competition
3 : grazing
How to measure light intensity ?
With a light meter
Errors with a light meter ?
A shadow could be cast
Make sure it’s the same time of day
How to measure moisture?
Moisture meter
Errors with a moisture meter ?
Could be dap already
Could not have been cleaned
How to measure temperature ?
With a thermometer
Errors with a thermometer?
Not left long enough
Errors when using a quadrant ?
Not thrown randomly
Not enough samples
Errors with a pitfall trap ?
Not at ground level
Not camouflaged well
What is an indicator species ?
Their presence, abundance or absence indicated the level of pollution in the near environment
