40.3-40.4

• Population Ecology- How abiotic and biotic factors influence the density, distribution, and size of population
• Density- numbers of individuals per unit area of volume
• Dispersion- patters of spacing among the individual within boundaries of population
• Immigration- Influx of new individuals from other areas
• Emigration- The Movement of individuals out of a population and into another location
• Patterns of Dispersion- (3) types

  Clumped- All in certain clumps or groups

  Uniform- Uniforms preform territoriality the of a bounded space against an encouragement of other individuals

  Random- random
• Demography- study of these key characteristics of a population (and how they change over time)
• Life Table- Summarizes the survival and reproductive rates of individuals in a specific age-group within a population
• Cohort- A group of Individuals near the same age in a population
• Survivorship Curve- A pilot of Proportions of numbers in a cohort still alive at each age
• Population density - the number of individuals per unit area of volume reflects the interplay of births, deaths, immigration, and emmigration
• Environmental and social factors influence the dispersion of individuals