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Population Size (Limited resources (Include "essential resources"…
Population Size
Limited resources
any natural areas have a limited number of resources to consume
Therefore, an increase in population (individuals)
increases "intraspecific competition"
Competition for resources among individuals within the same species
Carrying capacity (K)
Maximum number of individuals of a species that an environment can sustain...
Particular environment
Can change over time
Include "essential resources"
Food, water, hiding places, nesting sites "homes"
Plants essential resources for which they compete are: nutrients, water and sunlight
Ecological footprint
"area" of Earths surface required to sustain development and consumption
Total number of individuals in a population
Crowding of a population
increase in parasites and contagious disease
Due to individuals proximity to one another
Pathogens spread and parasites spread easier
Predation increases with density increase as well
Predators concentrate where prey is abundant
age structure
distribution of populations ages
Fertility
Population "future" growth
Least developed countries have "broad reproductive base"
will increase population size for some time
Birth rates can slow or increase based on environment and population
Decrease population size
Death
Emigration
departure of individuals from one population to another
Arises as resources decline and crowding increases
Increase in population size
Birth
Immigration
Movement of individuals into a population
the arrival of new residents that previously belonged to another population
factors that influence
Density Distribution
Density Dependent
Limiting Factors
Predation
Parasitism
disease
competition for resources in environment "limited resources"
Density Independent
Chance
Biotic Potential
The max possible population growth under optimal conditions