AS Population Dynamics Flashcards
1
Q
Birth rate
A
the number of offspring per 1000 population per year
2
Q
Carrying capacity
A
The greatest population that can be supported sustainably in an area.
3
Q
Death rate
A
the number of deaths per 1000 population per year
4
Q
Density dependent factors
A
factors where the chances of survival are dependent on the density of the populations, eg disease, food supply
5
Q
Density independent factors
A
factors where the density of the population has no effect on the chances of survival, eg flood, volcanic eruptions
6
Q
K-selected species
A
Species that have a relatively low breeding capacity: they often mature at a later age and have few young.
7
Q
r-selected species
A
Species that have a relatively high breeding capacity: they often mature at a young age and have large numbers of young.
