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Carrying capacity:
The limit to the number of individuals that can be supported by an existing habitat or ecosystem, and is denoted as K.
Dieback (Die-off):
A rapid decline in a population due to death.
Overshoot:
When a population becomes larger than the environments carrying capacity.
Life expectancy:
The average number of years that an infant born in a particular year in a particular country can be expected to live, given the current average life span and death rate in that country.
I ran out of info, so how many quarters are in $10?
40🎉🪙
Biotic potential:
Under ideal conditions with unlimited resources available, every population has a maximum potential for growth.
Limiting resource:
A resource that a population cannot live without and that occurs in quantities lower than the population would require to increase in size.
Survivorship curve:
A graph that represents the distinct patterns of species survival as a function of age.
What is an example of a k-selected species?
Kangaroo, humans, elephants, etc.
When your writing an FRQ, do you put the independent or dependent variable first?
Independent variable.
K-selected species:
A species with a low intrinsic growth rate that causes the population to increase slowly until it reaches the carrying capacity of the environment. (Few offspring, heavy parental care, longer lifespan, low biotic potential, higher competition)
R-selected species:
A species that has high intrinsic growth rate, and their population typically increases rapidly.(Many offspring, little to no parental care, shorter lifespan, high biotic potential, low competition)
Population growth models:
Mathematical equations that can be used to predict population size at any moment in time.
What is an example of an r-selected species?
Roach, fish, plants, etc.
When the resources needed by a population for growth are abundant, population growth usually____.
Accelerates/increases.
A factor that influences an individuals probability of survival and reproduction in a manner that depends on the size of the population.
Density dependent factor.
A factor that has the same effect on an individuals probability of survival and the amount of reproduction at any population size.
Density independent factor.
The number of offspring an individual can produce in a given time period, minus the deaths of the individual or its offspring during the same period.
Population or intrinsic growth rate.
The ability to produce an abundance of offspring.
Fecundity.
____ species are typically more adversely affected by invasive species than ___ species, which are minimally affected by invasive species. Most invasive species are ___ species.
K-selected, r-selected, r-selected.
A growth model that estimates a populations future size after a period of time based on the biotic potential and the number of reproducing individuals currently in the population.
Exponential growth model.
A growth model that describes a population whose growth is initially exponential, but slows as the population approaches the carrying capacity of the environment.
Logistic growth model.
The curve of the exponential growth model when graphed.
J-shaped curve.
The shape of the logistic growth model when graphed.
S-shaped curve.
_____ species tend to be advantaged in habitats that remain constant, while _____ species tend to be advantaged in habitats that are changing.
Specialists, generalist.