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Glossary


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


R

Red Data species

 

Classified endangered species threatened with extinction.

 
Renewable energy

 

Energy from renewable resources such as wind power, solar energy or biomass.

 
Renewable Resources

 

Raw materials that can be replaced by natural processes.

 
Resource management

 

Controlling and running resources in a planned and responsible way .

 
Reforestation

 

Planting of forests on lands that have previously contained forest, but have since been converted to some other use.

 
Renewable energy source

 

An energy source that does not rely on finite stocks of fuels. The most widely known renewable source is hydropower; other renewable sources are biomass, solar, tidal, wave and wind energy.

 
Reservoir

 

A component of the climate system, other than the atmosphere, which has the capacity to store, accumulate or release a substance of concern, e.g. carbon, a greenhouse gas or a precursor. Oceans, soils, and forests are examples of reservoirs of carbon. Pool is an equivalent term (note that the definition of pool often includes the atmosphere). The absolute quantity of substance of concerns, held within a reservoir at a specified time, is called the stock.

 
Restoration ecology

 

The science concerned with the deliberate colonization and revegetation of derelict land, especially after major damage from activities such as mining and waste disposal and after land has been released from agricultural use.

 
River basin

 

The portion of land drained by a river and the streams that flow into it. The quality of a river basin affects the quality of water, so efforts to protect and improve water quality must often include plans for managing river basins.

 
Run-off

 

A portion of rainfall, melted snow or irrigation water that flows across the ground’s surface and is eventually returned to streams. Run-off can pick up pollutants from air or land and carry them to receiving waters .