| forest health | A condition of ecosystem sustainability and attainment of management objectives for a given forest area. Usually considered to include green trees, snags, resilient stands growing at a moderate rate, and endemic levels of insects and disease. Natural processes still function or are duplicated through management intervention. (05 Dec 1998) |
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| forest plan | The document that sets goals, objectives, desired future condition, standards and guidelines, and overall programmatic direction for a National Forest. Required by the National Forest Management act of 1976. (05 Dec 1998) |
| forest residue | Material not harvested or removed from logging sites in commercial hardwood and softwood stands as well as material resulting from forest management operations such as precommercial thinnings and removal of dead and dying trees. (05 Dec 1998) |
| forest yaws | A form of New World cutaneous leishmaniasis caused by Leishmania braziliensis guyanensis in the Amazon delta; a small proportion of cases are said to metastasize to the nasal mucosa with espundia-like involvement. Synonym: bosch yaws, bush yaws, forest yaws. (05 Mar 2000) |
| late-successional forest | Forest seral stages which include mature and old- growth age classes. (05 Dec 1998) |
| acute haemorrhagic encephalitis | Encephalitis of apoplectoid character due to blood extravasation. Synonym: encephalitis haemorrhagica. (05 Mar 2000) |
| acute inclusion body encephalitis | The most common acute encephalitis, caused by HSV-1; affects persons of any age; preferentially involves the inferomedial portions of the temporal lobe and the orbital portions of the frontal lobes; pathologically, severe haemorrhagic necrosis is present along with, in the acute stages, intranuclear eosinophilic inclusion bodies in the neurons and glial cells. Synonym: acute inclusion body encephalitis, herpes encephalitis. (05 Mar 2000) |
| acute necrotizing encephalitis | An acute form of encephalitis, characterised by destruction of brain parenchyme. (05 Mar 2000) |
| arthritis-encephalitis virus, caprine | A species of lentivirus, subgenus ovine-caprine lentiviruses (lentiviruses, ovine-caprine), closely related to visna-maedi virus and causing acute encephalomyelitis, chronic arthritis, pneumonia, mastitis, and glomerulonephritis in goats. It is transmitted mainly in the colostrum and milk. (12 Dec 1998) |
| Australian X encephalitis | A severe encephalitis with a high mortality rate occurring in the Murray Valley of Australia; the disease is most severe in children and is characterised by headache, fever, malaise, drowsiness or convulsions, and rigidity of the neck; extensive brain damage may result; it is caused by the Murray Valley encephalitis virus (genus Flavivirus). Synonym: Australian X disease, Australian X encephalitis. (05 Mar 2000) |
| bacterial encephalitis | Encephalitis of bacterial aetiology. Synonym: encephalitis pyogenica, purulent encephalitis, suppurative encephalitis. (05 Mar 2000) |
| bovine spongiform encephalitis | <pathology> A neuro-degenerative disease found in domestic cattle which is related to a number of other similar diseases found in other animal species, including humans. The most well-known of these other diseases are scrapie, found in sheep, and Creutzfeldt-Jakob Disease, found in humans. The family of diseases is caused by an abnormally-configured protein called a prion. The function of the protein in its normal configuration is not certain. The diseases are similar to Alzheimer's disease in humans, except the progressive loss of brain function is more rapid. (09 Oct 1997) |
| bunyavirus encephalitis | Encephalitis of abrupt onset, with severe frontal headache and low-grade to moderate fever, caused by members of the genus Bunyavirus (Bunyaviridae family); infections also occur in rodents, lagomorphs, and domestic animals. Synonym: California encephalitis. (05 Mar 2000) |
| California encephalitis | Encephalitis of abrupt onset, with severe frontal headache and low-grade to moderate fever, caused by members of the genus Bunyavirus (Bunyaviridae family); infections also occur in rodents, lagomorphs, and domestic animals. Synonym: California encephalitis. (05 Mar 2000) |
| van Bogaert encephalitis | <neurology> Chronic progressive illness seen in children a few years after measles infection and involving demyelination of the cerebral cortex. Virus apparently persists in brain cells: usually considered a slow virus disease. (18 Nov 1997) |