A (12) | B (11) | C (6) | D (11) | E (21) | F (9) | G (7) | H (2) | I (8) | K (1) | L (16) | M (5) | N (5) | O (2) | P (11) | Q (1) | R (2) | S (13) | T (1) | V (1) | W (8)
Title Definition

The total number of individuals of a taxon or taxa in an area, population, or community. Relative abundance refers to the total number of individuals of one taxon compared with the total number of... read more

Acid Soil

Soil with a low pH, less than 7.0 but practically less than 6.6

Active adaptive management

See Adaptive management


Adjustment in natural or human systems to a new or changing environment. Various types of adaptation can be distinguished, including anticipatory and reactive adaptation, private and public... read more

Adaptive capacity

The general ability of institutions, systems, and individuals to adjust to potential damage, to take advantage of opportunities, or to cope with the consequences. 

Adaptive management

 A systematic process for continually improving management policies and practices by learning from the outcomes of previously employed policies and practices. In active adaptive management,... read more


Planting of forests on land that has historically not contained forests. (Compare Reforestation.)


The act of planting trees on land that has not previously been under forest according to historical records. (Soruce: SMurray) Artificial establishment by planting or seeding of forest on a non-... read more


The diversity of plants, insects, and soil biota found in cultivated systems.


the practice of growing trees and crops together. Agroforestry systems benefit from the ability of trees to protect soil from erosion and to capture and recycle plant nutrients. [fn]Source: (IISD... read more

Agroforestry systems

Mixed systems of crops and trees providing wood, non-wood forest products, food, fuel, fodder, and shelter

Alternative energy

energy that is not popularly used and is usually environmentally sound, such as solar or wind energy (as opposed to fossil fuels).