Chapter 53 Flashcards
Population density
Is the number of individuals of a species per unit area a species per unit area or volume
The dispersion pattern
Clumped: individuals are grouped in patches
1. Resources are clumped
2. Safety in numbers
3. Cooperative hunting I Social structures
Uniform: individual are equally spaced in environment resource partitioning
Random
Life tables
Track survivorship over the life span of individuals In a population or a cohort
Survivorship curves
Plot the proportion of individuals alive at each age these curves do not change for a species / there are three types
Exponential growth models
Intraspecific competition
Density independent factors
Caused by:
Natural disasters
Human infrastructures
Pollution
Oil spills
Demographic transition
Age structure
Has three age groupings
• pre reproduce - 0-14
• reproductive - 14-44
• Post reproductive - 44+
Age structure
Ecological footprint
Is an estimated of the amount of land required to provide the raw materials