The dispersion pattern (distribution pattern) of a population
describes the arrangement of individuals within a habitat at a particular point in time
, and broad categories of patterns are used to describe them. The three dispersion patterns are clumped, random, and uniform (figure 5.1. a).
What is the definition of population dispersion?
Dispersion is
a basic characteristic of populations
(Fig. 1), controlling various features of their structure and organization. It determines population density, that is, the number of individuals per unit of area, or volume, and its reciprocal relationship, that is, mean area, or the average area per individual.
What is population dispersion quizlet?
Dispersion. –
A property of populations, pattern of spacing of individuals within the area the population inhabits
. Patterns include clumped, uniform, and random.
What is an example of population dispersion?
In uniform dispersion, individuals of a population are spaced more or less evenly. One example of uniform dispersion comes from
plants that secrete toxins to inhibit growth of nearby individuals
—a phenomenon called allelopathy.
What is population density and dispersion?
Population density refers to the total number of organisms living in a particular environment
. … Population dispersion in ecology describes how the population is distributed into different groups in a particular area.
What is the most common population dispersion?
A clumped distribution
is the most common type of population dispersion.
What are the 3 types of spatial distribution?
Dispersion or distribution patterns show the spatial relationship between members of a population within a habitat. Individuals of a population can be distributed in one of three basic patterns:
uniform, random, or clumped
.
What are the three types of dispersion?
A specific type of organism can establish one of three possible patterns of dispersion in a given area:
a random pattern
; an aggregated pattern, in which organisms gather in clumps; or a uniform pattern, with a roughly equal spacing of individuals.
What is dispersion What are the three types of dispersion?
The dispersion pattern (distribution pattern) of a population describes the arrangement of individuals within a habitat at a particular point in time, and broad categories of patterns are used to describe them. The three dispersion patterns are
clumped, random, and uniform
(figure 5.1. a).
What causes clumped dispersion?
Clumped dispersion is often due to
an uneven distribution of nutrients or other resources in the environment
. It can also be caused by social interactions between individuals. Additionally, in organisms that don’t move, such as plants, offspring might be very close to their parents and show clumped dispersion patterns.
What is distribution of population?
The way in which people are spread across a given area
is known as population distribution. Geographers study population distribution patterns at different scales: local, regional, national, and global. A busy junction in Cairo. Patterns of population distribution tend to be uneven.
What are called population processes?
Population processes are typically characterized by
processes of birth and immigration, and of death, emigration and catastrophe
, which correspond to the basic demographic processes and broad environmental effects to which a population is subject.
Why is population dynamic?
Population dynamics are
directly affected by dispersal through the immigration of individuals into populations and by the emigration of individuals out of populations
. Much of what we understand about dispersal patterns, their causes and effects comes from mathematical models.
What is density of a population?
In the U.S., population density is typically expressed as
the number of people per square mile of land area
. … In a broad sense, this number tells us how many people would live within one square mile if the U.S. population were evenly distributed across its land area.
What is population density example?
Population density is
the average number of individuals in a population per unit of area or volume
. For example, a population of 100 insects that live in an area of 100 square meters has a density of 1 insect per square meter.
What can cause a population to be in a uniform distribution?
Uniform patterns of dispersion are generally a
result of interactions between individuals like competition and territoriality
. Clumped patterns usually occur when resources are concentrated in small areas within a larger habitat or because of individuals forming social groups.
