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- Tyrer, Sarah J.; Hild, Ann L.; Mealor, Brian A.; Munn, Larry C.
- Rangeland ecology & management 2007 v.60 no.6 pp. 604-612
- Rhaponticum repens; invasive species; introduced plants; noxious weeds; forbs; perennials; allelopathy; zinc; soil fertility; weed control; soil ecology; indigenous species; plant establishment; seedling emergence; shrubs; plant growth; seedling growth; cation exchange capacity; soil organic matter; electrical conductivity; soil pH; Wyoming; Colorado
- ... Russian knapweed (Acroptilon repens [[L.]] DC.), an exotic perennial forb, has invaded many native ecosystems in western North America. Russian knapweed's success is attributed to allelopathy, extensive tap rooting, zinc accumulation in soils, and a lack of North American predators. Revegetation following chemical control slows exotic reestablishment, but the impacts of Russian knapweed-invaded so ...
- Wells, Floye H.; Lauenroth, William K.
- Rangeland ecology & management 2007 v.60 no.6 pp. 574-577
- invasive species; ecological invasion; seed dispersal; horses; trails; feces; botanical composition; seeds; species diversity; seedlings; grasses; forbs; shrubs; trees; indigenous species; weeds; seedling emergence; working animals; Colorado
- ... Plant invasions are rapidly becoming an important threat to the conservation of wildlands. Understanding how potentially invasive plants are dispersed to new habitats is a critical step in the process of understanding such invasions. Our objective was to characterize the potential for long-distance transport of plant species in the digestive tract of horses along recreational trails. We sampled ho ...