What is normal distribution in biology?
normal distribution. Any of a family of bell-shaped frequency curves whose relative position and shape are defined on the basis of the mean and standard deviation. Tags: Molecular Biology.
What is the definition of distribution in biology?
In biology, the range of a species is the geographical area within which that species can be found. Within that range, distribution is the general structure of the species population, while dispersion is the variation in its population density. Range is often described with the following qualities: Sometimes a distinction is made between a species' natural, endemic, indigenous, or native range ...
What is uniform distribution in biology?
What is Uniform Distribution?
- Examples of Uniform Distribution. Uniform distribution is the simplest statistical distribution. ...
- Types of Uniform Distribution. Uniform distribution can be grouped into two categories based on the types of possible outcomes. ...
- More Resources. ...
What is random distribution in biology?
There are three main types of abiotic factors:
- climatic factors consist of sunlight, atmosphere, humidity, temperature, and salinity;
- edaphic factors are abiotic factors regarding soil, such as the coarseness of soil, local geology, soil pH, and aeration; and
- social factors include land use and water availability.
What is distribution in an ecosystem?
“Distribution” includes the pattern or arrangement of ecological systems. Distribution depends on the scale of analysis. For example: At a national scale, most of the forests are located in the eastern United States, with the distribution of forests in the West being in the mountains.
What are distributions in science?
Term “distribution ” in data science or statistics usually mean a probability distribution . Distribution is nothing but a function which provide the possible value of variable and how often they occur.
What is population distribution in biology?
Population distribution describes how the individuals are distributed, or spread throughout their habitat.
What is distribution and example?
Distribution is defined as the process of getting goods to consumers. An example of distribution is rice being shipped from Asia to the United States. noun.
What is types of distribution?
The three types of distribution channels are wholesalers, retailers, and direct-to-consumer sales.
What is distribution in biostatistics?
The distribution is a mathematical function that describes the relationship of observations of different heights. A distribution is simply a collection of data, or scores, on a variable. Usually, these scores are arranged in order from smallest to largest and then they can be presented graphically.
What is population and distribution?
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 is random distribution in biology?
In a random distribution, individuals are spaced at unpredictable distances from each other, as seen among plants that have wind-dispersed seeds. In a clumped distribution, individuals are grouped together, as seen among elephants at a watering hole.
What is the difference between density and distribution?
The main difference between population density and population distribution is that the population density is the number of individuals per unit land whereas the population distribution is the spreading of people over an area of land.
What is distribution in simple words?
Definition: Distribution means to spread the product throughout the marketplace such that a large number of people can buy it.
What is distribution process?
Distribution is the process of making a product or service available for the consumer or business user who needs it. This can be done directly by the producer or service provider or using indirect channels with distributors or intermediaries.
What is distribution in chemistry?
A representation of the frequency of occurrence of a characteristic; a way of describing the output of a common-cause system of variation in which individual values are not predictable, but the outcomes as a group form a pattern described in terms of location, spread, and shape. [ EIA 557]
What does distribution mean in plants?
Species distribution —or species dispersion — is the manner in which a biological taxon is spatially arranged. The geographic limits of a particular taxon's distribution is its range, often represented as shaded areas on a map.
What is the definition of distribution in medicine?
Drug distribution is the disbursement of an unmetabolized drug as it moves through the body's blood and tissues. The efficacy or toxicity of a drug depends on the distribution in specific tissues and in part explains the lack of correlation between plasma levels and the effects that are seen.
What is data distribution?
Data distribution is a function that specifies all possible values for a variable and also quantifies the relative frequency (probability of how often they occur). Distributions are considered any population that has a scattering of data.
How do you read data distribution?
Using Probability Plots to Identify the Distribution of Your Data. Probability plots might be the best way to determine whether your data follow a particular distribution. If your data follow the straight line on the graph, the distribution fits your data. This process is simple to do visually.
What is a species distribution model?
Species distribution models are statistical models of species–environment relationships based on species location (abundance, occurrence) data and measures of environmental variables limiting species distributions. They are usually used to make spatial predictions. SDMs have been developed for marine, terrestrial, and freshwater species at a wide range of scales. In spite of the growing availability of bioinformatics databases and geospatial data, the accuracy and usefulness of SDMs are often limited by data availability, though limitations can be addressed through additional survey and sampling, as well as geospatial data processing.
What is gradient analysis of species distribution?
Whereas gradient analysis of species distributions is “holistic” —including all members of the species regardless of age of individuals, population approaches to quantifying a species distribution on the landscape may be more informative in examining the age-specific population-level response to resources and stressors in a fluvial environment. Tolerance of plants to inundation, fluvial processes (scour and burial), anoxia, and drought often varies as a function of developmental stage (and age) for many species adapted to riverine environments—different requirements and tolerances at various ages or stages of development (Smith et al., 1998; Friedman and Auble, 1999 ). The same environmental factor may pose a different risk to individuals at each stage in development, influencing the rates of birth, growth, maturation, fertility and mortality. The risk of transition from one stage to the next in this cycle depends on the environment and the tools for dealing with the environment provided to the individual by its phenotype ( Caswell, 2001 ).
Why is it important to know the autecology of a species?
Knowledge of the autecology (individual life history) of a species relative to the physical environment is necessary for developing cause-and-effect relationships between attributes of hydrology and fluvial geomorphology and life-stages of that species.
What are the factors that affect meiofauna diversity?
Meiofaunal diversity has scarcely been investigated, although the same considerations apply as in the macrofaunal world. Variation in physical variables, species interactions, patchiness, dispersal, and the other factors relevant to larger organisms must also affect the meiofauna.
How are mangroves related to their distribution?
The distribution of species of mangrove animals may also be related to patch size and the distance between neighboring patches, on a smaller spatial scale than applies to the distribution of mangrove species themselves, corresponding to the more limited dispersal ability of the species in question.
Is the composition of root epibiont communities stable?
Here, too, the composition of root epibiont communities appears relatively stable in terms of functional groups. The actual species present are much more unpredictable and particularly affected by physical variables and by the supply of colonizing larvae.
Examples of distribution in a Sentence
The group collects food and clothing for distribution to needy families. The distribution of paychecks will happen every other Friday.
Kids Definition of distribution
2 : the way things are divided or spread out She studies the distribution of wildcats in the area.
Legal Definition of distribution
Note: The laws dealing with intestate succession are often called laws of descent and distribution.
What is distribution in business?
Definition: Distribution means to spread the product throughout the marketplace such that a large number of people can buy it. Distribution involves doing the following things: 1. A good transport system to take the goods into different geographical areas.
Why is distribution important?
Distribution is critical for any type of industry or service. The best price product, promotion and people come to nothing if the product is not available for sale at the points at which consumers can buy.
Is direct marketing a distribution channel?
Nowadays, even direct marketing is considered a feasible distribution channel. Definition: Customer Lifetime Value or CLTV is the present value of the future cash flows or the value of business attributed to the customer during his or her entire relationship with the company.
What is the mode of dispersion of a species?
Modes of Dispersion. A species distribution spans the entire area that is used by individuals of the species. Organisms can be equally spaced apart, clustered in groups or dispersed randomly throughout the landscape. In species that exhibit uniform dispersion, individuals are spaced equidistantly from one another.
What is uniform dispersion?
In species that exhibit uniform dispersion, individuals are spaced equidistantly from one another. Plants that release chemicals into the ground to prevent the growth of other individuals nearby display uniform distributions. Territorial species also tend to be more uniformly distributed.
What is a highly territorial species?
Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a clumped distribution pattern.
What is the study of how species interact with their environment called?
To understand the way that species interact with their environment and other species, a study called ecology. Scientists must know information about its distribution, the entire geographic range that individuals within this species inhabit. Within this distribution, they can be spaced equidistant from one another which is called a uniform ...
Do shearwaters have uniform distributions?
For example, within a population of reproducing shearwaters (a species of seabird), individuals display a uniform distribution. However, at the level of the entire species, populations show a clumped distribution, clustered on islands that are suitable for nest-building and protected from predators. Suggested Reading.
Practical Biology
A collection of experiments that demonstrate biological concepts and processes.
Distribution of organisms
Discovering environmental preferences could start by making observations of existing distributions in nature, or by giving organisms choices and observing how they distribute themselves over time.
Overview
Range
In biology, the range of a species is the geographical area within which that species can be found. Within that range, distribution is the general structure of the species population, while dispersion is the variation in its population density.
Range is often described with the following qualities:
• Sometimes a distinction is made between a species' natural, endemic, indigenous, or native rang…
Factors affecting species distribution
Distribution patterns may change by season, distribution by humans, in response to the availability of resources, and other abiotic and biotic factors.
There are three main types of abiotic factors:
1. climatic factors consist of sunlight, atmosphere, humidity, temperature, and salinity;
2. edaphic factors are abiotic factors regarding soil, such as the coarseness of soil, local geology, soil pH, a…
Patterns on large scales
On large scales, the pattern of distribution among individuals in a population is clumped.
One common example of bird species' ranges are land mass areas bordering water bodies, such as oceans, rivers, or lakes; they are called a coastal strip. A second example, some species of bird depend on water, usually a river, swamp, etc., or water related forest and live in a river corridor. A separate example of a river corridor would be a river corridor that includes the entire drainage, h…
Patterns on small scales
On large scales, the pattern of distribution among individuals in a population is clumped. On small scales, the pattern may be clumped, regular, or random.
Clumped distribution, also called aggregated distribution, clumped dispersion or patchiness, is the most common type of dispersion found in nature. In clumped distribution, the distance between neighboring individuals is minimized. This t…
Statistical determination of distribution patterns
There are various ways to determine the distribution pattern of species. The Clark–Evans nearest neighbor method can be used to determine if a distribution is clumped, uniform, or random. To utilize the Clark–Evans nearest neighbor method, researchers examine a population of a single species. The distance of an individual to its nearest neighbor is recorded for each individual in the sample. For two individuals that are each other's nearest neighbor, the distance is recorded twic…
Species distribution models
Species distribution can be predicted based on the pattern of biodiversity at spatial scales. A general hierarchical model can integrate disturbance, dispersal and population dynamics. Based on factors of dispersal, disturbance, resources limiting climate, and other species distribution, predictions of species distribution can create a bio-climate range, or bio-climate envelope. The envelope can range from a local to a global scale or from a density independence to dependenc…
Species Distribution Grids Project
The Species Distribution Grids Project is an effort led out of the University of Columbia to create maps and databases of the whereabouts of various animal species. This work is centered on preventing deforestation and prioritizing areas based on species richness. As of April 2009, data are available for global amphibian distributions, as well as birds and mammals in the Americas. The map gallery Gridded Species Distribution contains sample maps for the Species Grids data s…