Distribution of Organisms Flashcards
1
Q
What is an indicator species?
A
Species whose presence or absence can indicate the environment quality/levels of pollution in an area
2
Q
Define abiotic factor and give examples
A
Non-living factors which affect biodiversity e.g. Temperature and light intensity
3
Q
Define biotic factor and give examples
A
Factors relating directly to Liv organisms e.g. Disease and predation
4
Q
What are pitfall traps used for?
A
To sample small invertebrate animals that live on the soil surface
5
Q
What is a source of error when using a pitfall trap and what’s the problem with it?
A
Trap not level with soil surface, organisms don’t fall in
