account: Specific information about status, ecology, distribution and management prescription for Identified Wildlife included in this guidebook.
age class: Any interval into which the age ranges of trees, forests, stands or forest types is divided for classification and use; forest inventories commonly group trees into 20-year age class groups.
biological diversity: The diversity of plants, animals and other living organisms in all their forms and levels of organization, including the diversity of genes, species, ecosystems, and the evolutionary and functional processes that link them.
biogeoclimatic units: Units of a hierarchical ecosystem classification system having three levels of integration - regional, local and chronological - and combining climatic, vegetation and site factors.
blue-listed species: Taxa considered to be vulnerable in British Columbia. Vulnerable taxa are of special concern because of characteristics that make them particularly sensitive to human activities or natural events. Blue-listed taxa are at a lower level of risk than red-listed taxa.
broad ecosystem units: A permanent area of the landscape, meaningful to animal use, that supports a distinct kind of dominant vegetative cover, or distinct non-vegetated cover. These units are defined as including potential (climax) vegetation and any associated successional stages (for forests and grasslands).
coarse woody debris (CWD): Decaying wood of a minimum diameter, on the forest floor that provides special micro-climates and breeding habitat for a wide variety of organisms. Size is variable, but larger size pieces are preferable as they provide the greatest longevity and potential for site productivity and wildlife use.
critical wildlife habitat: A feature or area occupied by wildlife which is recognized as being essential for the maintenance of the population or ecosystem.
diameter at breast height (dbh): A measurement taken at approximately breast height (~1.5 m) and used as the standard for describing the diameter of a tree.
ecoprovince: An area with consistent climate or oceanography, relief and plate tectonics.
ecosection: An area with minor physiographic and macroclimatic or oceanographic variation.
endangered: A COSEWIC designation indicating a species facing imminent extirpation or extinction.
indeterminate: A COSEWIC designation for species that have been evaluated, but not enough information is available to determine their status.
large woody debris (LWD): Woody debris in a stream, lake or wetland setting, during at least part of the year, with a diameter of 10 cm or greater and a length of two metres or greater.
not at risk: A COSEWIC designation for species that have been evaluated and deemed not currently at risk.
plant community: The plant community element, used by the Conservation Data Centre and this guidebook, is based on the plant association concept (V.J. Krajina and students): an abstract unit based on sample plots of climax vegetation that possess similar vegetation structure and native species composition, and occur repeatedly on similar habitats.
red-listed species: Taxa being considered for or already designated Extirpated, Endangered or Threatened. Extirpated taxa no longer exist in the wild in British Columbia, but occur elsewhere. Endangered taxa are facing imminent extirpation or extinction. Threatened taxa are likely to become endangered if limiting factors are not reversed.
regionally important wildlife: Native, regularly occuring taxa that are not considered at risk provincially, but are affected by forest practices (includes range practices), and require specific habitat management prescriptions in order to maintain regional populations.
riparian habitat: The area adjacent to a watercourse, lake, swamp or spring that is influenced by the availability of water and is generally critical for wildlife cover, fish food organisms, stream nutrients and large organic debris, and for streambank stability.
seral stages: The stages of ecological succession of a plant community, (e.g., from young stage to old stage). The characteristic sequence of biotic communities that successively occupy and replace each other by which some components of the physical environment becomes altered over time.
structural stage: Structural stage describes current vegetation focusing on the age class of the ecosystem in question. Stuctural stage will depend on subzone designation and vegetative species.
threatened: A COSEWIC designation indicating a species likely to become endangered if limiting factors are not reversed.
vulnerable: A COSEWIC designation indicating a species of special concern because of characteristics that make it particularly sensitive to human activities or natural events.
wildlife tree (WT): A standing live or dead tree with special characteristics that provide valuable habitat for the conservation or enhancement of wildlife. Characteristics include large diameter and height for the site, current use by wildlife, declining or dead condition, value as a species, valuable location and relative scarcity.
wildlife tree patch (WTP): An area specifically identified for the retention and recruitment of suitable wildlife trees. It can contain a single wildlife tree or many. A wildlife tree patch is synonymous with a group reserve.
yellow-listed species: Vertebrates that are considered "not at risk" within the province.