Animal Populations. What is a population of animals?. Population: _____________. What is a population of animals?. Population: group of individuals from the same species that live in the same area at the same time (that are capable of interbreeding and producing fertile offspring).
What is an example of clumping?
Can you think of animals who exhibit this type of population behaviors?
Ability to compete for resources
Ability to avoid predators
Ability to resist diseases
Ability to migrate
Ability to adapt to environmental change
Biotic Decrease Cont’d
Unable to compete for resources
Inability to avoid predators
Inability to resist diseases
Inability to migrate
Inability to adapt to environmental change
r = (births + immigrations) - (deaths + emigrations)
R= (gaining) – (losing)
2 births + 2 Immigrates
2 Emigrates + 1 Death
Snowshoe hares are preyed upon by lynx. Both species show pronounced population cycles. The cycles are roughly synchronized, although the rise and fall of lynx populations slightly lags the rise and fall of hare populations
What are the pros and cons to using each of these types of sample counting?
What are types of organisms that could be used in each of these counts?
3. Can you use actual counting techniques for some of these populations?
Total Captured Total Population
This is what field researchers are trying to find
Capture, Mark, & Recapture Lab
Count this box twice!!!