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Survivorship Curve
shows relative survival rates from birth to max age
Type 1
high survivorship (low mortality) in early (high parental care) & middle life (large size and defensive behavior)
rapid decline in survivorship (high mortality) in late life
species: K selected
ex: most mammals
Type 2
constant survivorship / mortality rate
steadily decreasing survivorship throughout life
species: K selected
Type 3
low survivorship (high mortality) in early life due to little to no parental care
few make it to midlife; slow, steady decline in survivorship in mid life
high survivorship (low mortality) for individuals who survive early life, slow decline in survivorship in old age
species: R selected
ex: insects, fish, plants
Faster Drop in Line
quicker die-off of individuals
Slower Drop in Line
longer average lifespan