APPENDIX ONE 



Glossary 



ABIOTIC DISEASES 



Diseases caused by environmental conditions or factors such as 

 atmospheric deposition and pollution, nutrient imbalance, 

 adverse temperatures, lightning, soil compaction, and flooding. 



BIOTIC DISEASES 



Diseases caused by pathogens. 



ECOSYSTEM MANAGEMENT 



Ecosystem management is the operating philosophy of the Forest 

 Service for stewardship of lands and resources to achieve environ- 

 mentally sound multiple-use management of the National Forest 

 System. Ecosystem management means using an ecological 

 approach to achieve the multiple-use management of national 

 forests and grasslands by blending the needs of people and envi- 

 ronmental values in such a way that these lands represent diverse, 

 healthy, productive, and sustainable ecosystems. 



EXOTIC FOREST PESTS 



Those forest pests not native to the North American continent. 



FOREST PESTS 



Insects and related organisms and pathogens that damage trees 

 and have the potential to be detrimental to ecosystem integrity or 

 to achievement of resoiuxe management objectives. Many organ- 

 isms, though detrimental to individual trees, do not necessarily 

 have serious effects on the health of the forest. 



INTEGRATED PEST MANAGEMENT 



Decision-making and action process incorporating biological, 

 economic, and environmental evaluation of pest-host systems to 

 manage pest popidations. 



INTRODUCED FOREST PESTS 



Exotic pests that have become established on the North 



American continent. 



PATHOGENS 



Biotic agents capable of causing disease, usually parasitic fungi, 

 bacteria, viruses, and other microorganisms, and parasitic seed 

 plants (e.g., mistletoes) but not insects and related organisms. 



Healthy Forests for America 's Future — A Strategic Plan 49 



