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WorksheetsPopulation Ecology: Age Structure and Survivorship Curves
Total questions: 12
Worksheet time: 18mins
Type 3 graphs show
Some death rates
Death rates through out
Death rates at older ages
High death rates at a young age
Type 1 curve represents what type of group
Birds
Humans
Trees and plants
Marine life
What are survivorship curves?
curves that describe the number of survivors over time
curves that tell us what the limiting factors are
curve that tells us about the carrying capacity
a curve
Type 2 curve shows us
deaths at the end
the graph going down
constant death at all stages
death at the beginning
A graph that shows the number or proportion of individuals surviving to each age for a given species or group.
survivorship curve
exponential
linear
logistic
Tracks organisms that tend to live long lives (low death rate and high survivorship rate); toward the end of their life expectancies, however, there is a dramatic increase in the death rate.
Type I
Type II
Type III
Type IV
Describes organisms with a high death rate (or low survivorship rate) immediately following birth. Examples include bacteria, fishes, and invertebrates.
Type I
Type II
Type III
Type IV
