Population Distribution & Abundance Flashcards
Defined as a group of individuals of a single species inhabiting a specific area
Population
A species’ […] consists of all the factors necessary for its existence, approximately when, where, and how a species makes its living
niche
Who developed the niched concept?
Joseph Grinnell (1918)
The […] defines the physical conditions under which a species might live, in the absence of interactions with other species
fundamental niche
[…] is the actual niche of a species whose distribution is limited by biotic interactions
Realized niche
Refers to small distances over which there is little environmental change signification to the organism under study
Small Scale
Refers to areas over which there is substantial environmental change
Large Scale
A distribution pattern in which an individual has an equal probability of occurring anywhere in an area
Random
A distribution pattern in which individuals are uniformly spaced through the environment
Regular
A distribution pattern in which individuals live in areas of high local abundance, separated by areas of low abundance
Clumped
What organism was used to study population distribution patterns?
Larrea tridentata
Creosote Bush
Who mapped patterns of bird abundance across North America?
Terry (1988)
Who produced one of the first clear demonstrations of the relationship between body size and population density?
John Damuth (1981)
What is the relationship between population density and organism size?
Negative
