What is the difference between clumped random and uniform dispersion?
Clumped dispersion (Figure 1) where individuals are aggregated in certain areas of the sampled space. Uniform dispersion (Figure 2), where individuals are almost equally spaced apart from each other and random dispersion (Figure 3). The average number of individuals per square is 10, and the variance is 4.27.
What are the 3 advantages of clumped dispersal pattern?
Describe three advantages an individual organism might have by living in a population with a clumped dispersal pattern. Individuals do not have to move very much to find mates, organisms have better protection from predators, and there is more access to food resources.
Which is an example of uniform dispersion?
Uniform 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. In a clumped dispersion, individuals are clustered in groups.
What is a benefit of uniform dispersion?
Pros of uniform dispersion: Optimum spacing between the organisms provides them an adequate amount of resources for each individual.
What is uniform population distribution?
Individuals of a population can be distributed in one of three basic patterns: uniform, random, or clumped. In a uniform distribution, individuals are equally spaced apart, as seen in negative allelopathy where chemicals kill off plants surrounding sages.
What causes random dispersion?
Individuals of a population can be spaced in different ways called dispersion patterns. In uniform dispersion, individuals are evenly spaced. In random dispersion, individuals are randomly arranged. This pattern can also be caused by the formation of social groups based on protection or hunting.
What is an example of random dispersion?
An example of random distribution occurs with dandelion and other plants that have wind-dispersed seeds that germinate wherever they happen to fall in favorable environments. Individuals that are equally spaced in the environment have a uniform distribution.
What is an example of uniform dispersion?
Uniform dispersion is observed in plant species that inhibit the growth of nearby individuals. For example, the sage plant, Salvia leucophylla, secretes toxins, a phenomenon called negative allelopathy. Animals that maintain defined territories, such as nesting penguins, also exhibit uniform dispersion.
What are some causes of clumped distribution?
An area with an uneven distribution of food, water, moisture, temperature, or other resources can cause clumped dispersion. This pattern can also be caused by the formation of social groups based on protection or hunting. In plants, clumped dispersion is common when offspring fail to disperse from parent plants.