Exterior surface reflectivity index, or the capacity of a surface to reflect back light as evaluated across a specified range of frequencies.
The standing dry weight of all vegetation, typically measured in kilograms per square meter.
Coefficient of Conservancy/Floristic Quality Assessment (FQA):
An ecological integrity evaluation tool for NPCs, pioneered by Wilhelm (1977) and later refined by Swink and Wilhelm (1979, 1994). Currently, all 50 states use FQA systems. All plants within a subject community are scored from 0–10, from most to least invasive (e.g., in Minnesota: common buckthorn Rhamnus cathartica = 0; pink and white ladyslipper orchid Cypripedium reginae = 10).
Cultivar or CV:
Named variety of a hybrid plant species e.g., Iris “Caeser’s Brother” is an Iris siberica crossed Iris sanguinea hybrid. CVs are generally more vulnerable to pest infestations and usually lack pollen or nectar in their flowers.
Major ecosystem zones with distinctive physical structures and groupings of plants (trees, shrubs, vines, herbaceous) with unique soil orders, precipitation, climate, and specific stochastic disturbance regimes, such as winds, fire, or floods.
Historical Context or European Presettlement:
Refers to native landcovers in Minnesota prior to 1840.
Large, medium, and small refer to the ultimate mature dimensions of that tree species, not tree size at time of planting. For example, hybrid elm, burr oak, hackberry, American linden, white pine, etc. would be considered large trees.
Primary taxonomic classification, ranking below genus.
Second-level of scientific species classification, (e.g., maples: Acer, oak: Quercus, elms: Ulmus are all tree genera). Note that as multiple species (cultivars) may be of the same genera; if multiple species or cultivars are selected for a site which belong to a single genera, only a single genera is represented by those selections.