Distribution of Organisms Flashcards
1
Q
Sample
A
a representative part of a larger quantity
2
Q
Sources of Error
A
a mistake made when sampling abiotic/biotic factors
e. g temp - not holding properly
- not waiting for temp to settle
3
Q
Tullgren Funnel
A
can be used to catch small invertebrates in soil
4
Q
Quadrats
A
used to estimate a population in an area like a field + used to measure density + frequency
5
Q
Limitations
A
when a resource is in short supply
6
Q
Pitfall Trap
A
a trap for small moving animals
e. g. - insects
- amphibians
- reptiles
7
Q
Biotic Factors
A
living factors that effect the population of an organism or environment e.g. - food supply
- disease
- temp
- animal polination
- competition
- predators
8
Q
Abiotic Factors
A
non living chemical parts of the environment that effect organisms e.g. - sunlight
- water
- soil PH
- oxygen concentration
