Systems Affected (standardized):
cropland/pastureland, disturbed/waste areas
Regions(s) present (updated by AB):
potential to form biodiversity-inhibiting monocultures that can transform grassland vegetation at the community and ecosystem levels of organization. OWB monocultures lack the necessary variety in structure, seasonality of growth, and nutritional availability required to sustain a diverse fauna. Floral diversity may be impacted directly by OWBs through physical displacement, competition, etc. Habitats of some Threatened and Endangered (T&E) species in particular can be threatened by OWBs. In combination with other less desirable non-native grass species such as Lehmann lovegrass (Eragrostis lehmanniana), OWBs may form a complex that can act similarly to a monoculture.
Source? likely to be reintroduced:
Sites planted or invaded by OWBs serve as the primary source for further spread onto disturbed and non-disturbed sites. In the Southwest, OWBs generally migrate away from infested roadsides or other disturbed areas in an advancing front across pastures or native grasslands. If unassisted, OWB seed has relatively limited dispersion and will mostly establish seedlings close to parent plants. However, seeds readily disperse via mowing operations in ROWs, vehicular traffic, flowing water, animals, and winds moving across open terrain. Growth of stolons and rhizomes may also contribute to spread on a local basis.
Can form monocultures that transform grasslands at the community and ecosystem levels. Diversity may be impacted through physical displacement and competition. In the Southwest will migrate away from infested areas in an advancing front across pastures or native grasslands. Seeds readily disperse , and growth of stolons and rhizomes may also contribute to spread on a local basis.
Native Regions in OK:
Current and past designations:
Present in OK?
Present in Bordering States?
Has Legal Status in BS?