Apes Mod 15: Generalists & Specialists, K- & r- Selected Species, & Survivoriship Curves
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11 Terms
Population growth rate
The number of offspring an individual can produce in a given time period, minus the deaths of the individual or its offspring during the same period. Also known as intrinsic growth rate
Biotic potential
Under ideal conditions with unlimited resources available, every population has a maximum potential for growth.
Carrying capacity
The limit to the number of individuals that can be supported by an existing habitat or ecosystem, and is denoted as K.
K-selected species
A species with a low intrinsic growth rate that causes the population to increase slowly until it reaches the carrying capacity of the environment.
r-selected species
A species that has a high intrinsic growth rate, and their population typically increases rapidly.
Overshoot
When a population becomes larger than the environment’s carrying capacity.
Dieback
A rapid decline in a population due to death. Also known as die-off.
Survivorship curve
A graph that represents the distinct patterns of species survival as a function of age.
Type I survivorship curve
A pattern of survival over time in which there is high survival throughout most of the life span, but then individuals start to die in large numbers as they approach old age.
Type II survivorship curve
A pattern of survival over time in which there is a relatively constant decline in survivorship throughout most of the life span.
Type III survivorship curve
A pattern of survival over time in which there is low survivorship (a high death rate) early in life with few individuals reaching adulthood.