Population Distribution
This term refers to the range of environmental conditions in which a particular species actually lives.
Realized niche or post-competitive niche
These strips of favorable habitat, located between larger patches of habitat, facilitate dispersal.
Habitat corridors
The population parameter represented by the following mathematical equation: GR=[(B+I)-(D+E)]/T
GR - Growth Rate
When referring to source-sink habitat selection dynamics, what is mean by an ecological trap?
When organisms prefer sink habitat to source habitats
Species that live in a single, often isolated location.
Endemic species
This term refers to the range of environmental conditions in which a particular species can live.
Fundamental niche or pre-competitive niche
Across taxa, population density correlates with individual body size in this direction.
Negative correlation
This population growth model compares population sizes at regular time intervals.
Geometric growth model
In this class of survivorship curve, most individuals within the population survive to old age.
Class I
Species with very large geographic ranges that can span several continents.
Cosmopolitan species
This law states that an organism's success depends on a complex of environmental conditions, with each species having minimum, maximum, and optimal thresholds for factors like temperature, sunlight, and salinity.
Shelford’s Law of Tolerance
Across taxa, population abundance correlates with geographic range in this direction.
Positive correlation
The exponential growth model is characterized by this type of curve.
J-shaped
Generation time (T) is the average time between the birth of an individual and the birth of its offspring. In general, how do species growth rates correlate with their generation times?
Faster growth rate = Shorter generation time
The spacing of individuals with respect to one another within the geographic range of a population.
Dispersion
In 1957, Hutchinson provided ecology with this still-relevant definition of the term “niche”.
The total range of conditions under which an individual or a population lives and replaces itself
Intrinsic Growth Rate differs from the general Growth Rate calculation in that it excludes these two variables.
Immigrants and emigrants
This value can be determined by dividing population abundance by unit area.
Population Density
The total number of female offspring we expect an average female to produce over the course of her life.
Net reproductive rate
The total number of individuals in a population that exist within a defined area. Abundance
Abundance
In an ecological niche modeling framework, parameterization depends on these three types of data.
Occurrence data, environmental data, algorithm data
In the geometric growth model, this variable represents a ratio of a population’s size in one year to its size in the preceding year (or some other time interval).
Lambda λ
You capture and mark 50 lizards (M). You later return to the same site and capture 40 lizards (C). Of the 40 in this second round of catching, 10 are recaptures (R). Using this information, determine the estimated population size (N) for the lizards.
R/C = M/N
200
A population of prairie voles is made up of 25% young individuals, 35% middle aged individuals, and 40% elderly individuals. How should we expect population size to change in the near future?
The population should decrease
When individuals distribute themselves among different habitats in a way that allows them to have the same per capita benefit.
Ideal free distribution