The cover by different plant life forms (
forbs, shrubs, or graminoids) was determined by summing covers of plant species belonging to each category within the quadrats and then calculating the mean value for each habitat type.
Further, dense patches of nettles are associated with reduced abundance of summer-reproducing
forbs and graminoids in Minnesota forests, along with increases in sugar maple (Biederman 2000).
The Conference Declaration commits participants to defending and promoting
FoRB as a universal, inalienable and non-derogable human right for all persons, as individuals and in community with others, through their work and respective institutions, by sharing information and mobilizing effective responses.
Fire season and prairie
forb richness in a 21year experiment.
There was also less perennial grass and
forb cover in the Northwest area.
Western ragweed was the dominant
forb in most quadrats (eight quadrats).
Cattle diets in tall
forb communities on mountain rangelands.
Aquatic species accounted for 1.9%,
forbs 1.1%, and grasses at 0.9%.
Look for them before the grass and the
forbs get too tall.
Vegetative features Baird's Chestnut-collared Sparrow Longspur Mean vegetation height (cm) 14-30 15-23 Maximum height (cm) 30-43 unknown Visual obstruction reading (cm) 6-21 6
Forb cover (%) 25 6-18 Shrub cover (%) 1-20 [less than or equal to] 3 Bare ground (%) unknown 1-15 Litter depth (cm) <4 2 Vegetative features Dickcissel Mean vegetation height (cm) 20-98 Maximum height (cm) 150 Visual obstruction reading (cm) 14-82
Forb cover (%) 3-60 Shrub cover (%) [less than or equal to] 11 Bare ground (%) [less than or equal to] 16 Litter depth (cm) [less than or equal to] 5
Individual planted prairie grass and
forb species showed varying establishment successes (Table 2).