organism present in the food of a predator divided by the 

 percentage of this prey that is present in the habitat. 



Forage Volume 



(1) The parts of a plant within reach of animals for 

 grazing. (2) A measure of the yield of Forage, the total 

 amount of forage produced on a range area during a year. 



Forb 



An herbaceous plant that is not a grass nor grasslike such 

 as a sedge, e.g., sunflower, geranium. 



Foredune 



A low dune, often occupied by a sand-binding grass, 

 bordering the sandy shore of a sea or lake. 



Foreshore 



The portion of the shore occupied daily by tides. 



Forest 



A stand of trees growing close together with associated 

 plants of various kinds. 



Forest Cover 



The living plants and dead organic material occupying 

 the surface of a forest, often restricted to the woody plants 

 covering the ground, cf. Basal cover. 



Forest Edge 



The border, or Ecotone, of a forest with another kind 

 of vegetation such as grassland. 



Forest Floor 



The deposits of plant material such as leaves and branches 

 on the ground in a forest. 



Forest Influences 



All the effects or Reactions of a forest upon the habitat 

 or the environmental conditions, e.g., aiding in maintenance 

 of uniform stream flow, shading the ground. 



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