Funding for the study of grasses and forbs
was provided by a grant from the National Fish and Wildlife Foundation, and we received additional funding from the United States Fish and Wildlife Service, New Mexico Department of Game and Fish, Oklahoma Department of Wildlife Conservation, and Trygger Foundation, as well as from various private donations to the Sutton Avian Research Center.
(three annuals and 11 perennials), three grasses (perennials), three shrubs (one evergreen and two deciduous), and mesquite beans were analyzed.
Within vegetation quadrats, species richness, height, percent grass, forbs
, woody, and bare ground were examined.
1973) reported bite count methods estimated more use of shrubs as a class and less use of grass and forbs
than actually occurred for mule deer (Odocoileus hemionus).
were counted individually, but for grasses, tillers were counted as one individual.
The more competitive dominant forb
species did not appear to be abundant.
Generally, this area was regarded as being a part of the tallgrass prairie due to the predominance of tallgrass prairie grasses and forbs
(Transeau 1935; Thompson 1975; Risser et al.
The first canonical variable was significantly and positively correlated with percent forb
cover, woody height, vegetation density 0 - 90 cm, and vegetation density 91 - 180 cm (Table 1).
We used Spearman's rank correlations (Zar, 1996) to identify relationships between precipitation and production of forbs
are broomweed (Gutierrezia texana), hog potato (Hoffmannsegia glauca).
Schultes (yellow foxtail) and the forb
Hibiscus trionum L.
Real native prairie might contain over a hundred grass and forb