Decapod 



An animal in the order Decapoda, class Crustacea, e. g., 

 lobster, crab, shrimp. 



Decidulignosa 



Communities consisting of trees or shrubs with deciduous 

 leaves. 



Deciduous 



Refers to the losing of parts of an organism such as leaves 

 of trees or antlers of deer at certain seasons. 



Decomposer Organism 



An organism, usually a bacterium or a fungus, that 

 breaks down the bodies or parts of dead plants and animals 

 into simpler compounds. 



Decreaser 



A species that decreases in Population density or Cover 

 under continued grazing, cf. Increaser. 



Deferred Grazing 



The postponement in the grazing of vegetation after 

 growth has started until a certain stage of development has 

 been attained in order to promote vigor of the plants, cf. 

 Continuous grazing, Rotation grazing. 



Deficiency Disease 



A disease or malfunctioning of an organism caused by the 

 lack or insufficiency of some food substance such as a certain 

 vitamin or a mineral. 



Deflocculation 



The separation of soil aggregates containing clay into 

 individual particles. 



Degradation (Soil) 



The change in a soil that occurs in leaching, e. g., a 

 Chernozem into a Podzol. 



104 



