3.2 Distribution of Organisms Flashcards
1
Q
Describe biotic factors
A
the living factors in an ecosystem
e.g disease, competition for resources, predation, grazing, food availability
2
Q
how to measure populations
A
sampling is carried out to allow estimates to be made of the population size in a habitat.
e.g quadrats, pitfall traps, small mammal traps
3
Q
Describe abiotic factors
A
the non-living factots present in an ecosystem.
e.g light intensity, moisture,pH, temperature
4
Q
how to measure abiotic factors
A
light meter, moisture, pH, temperature
