Glossary R

The Environmental Glossary. Letter R +++ Popular Articles: 'Range', 'Renewable energy', 'Range of tolerance'

Deutsch: Region / Español: Región / Português: Região - / Italiano: Regione geografica

A region is a geographical area broadly divided by phsyical characteristics (physical geography), human-impact characteristics (human geography), and the interactions between humanity and the environment (environmental geography).

A Regionalization or Ecoregionalization is procedure for subdividing a geographic area into regions of relative homogeneity in ecological systems or in relationship between organisms

A regression is any of a number of statistical techniques in which the relationship of one (or more) variable(s) is (are) estimated as a function of another variable or variables.

A Regression Analysis is a statistical procedure used to determine the relationship between one or more independent variables and a dependent variable; a measurement of change in one variable as the result of changes in other variables.

A relation is the concept of function, correlation, or association between or among attributes,

Relative Abundances are measure of the population of one species in an ecosystem as compared to other species within that same ecosystem; number of individuals in any given species compared to the total number of individuals in the community

Deutsch: Relative Prozentdifferenz (RPD) / Español: Diferencia porcentual relativa (DPR) / Português: Diferença percentual relativa (DPR) / Français: Différence pourcentage relative (DPR) / Italiano: Differenza percentuale relativa (DPR) /

A Relative percent difference (RPD) is a measure of precision, calculated by the following formula:

Relative standard deviation see Coefficient of variation.

Deutsch: Freisetzung / Español: Liberación / Português: Liberação / Français: Libération / Italiano: Rilascio /

A Release is when a hazardous substance goes from a controlled condition (for example, inside a truck, barrel, storage tank, or landfill) to an uncontrolled condition in the air, water, or land.

The Reliability is the ability of a system, process, or parameter to do what is expected or specified under set conditions and designated time interval without failure.

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