Life-history traits

Reproductive strategies

r-selected species

Large numbers of offspring with little parental care and small proportion of offspring expected to survive

K-selected species

Small numbers of offspring with substantial parental care and large proportion of offspring expected to survive

Survivorship types

Metapopulations

Metapopulations

• Source: Number of births higher than number of deaths
• Sink: Numbers of deaths higher than number of births
• See Levins and Culver (1971)