Your search for keyword(s) "ecotypic differentiation" resulted in 2 record(s).

Title: Plant morphology and grazing history: Relationships between native grasses and herbivores: Journal: Plant Ecology; Authors: E. L. Painter, J. K. Detling, and D. A. Steingraeber; Date: 1993; Summary: Painter et al examined four co-occurring perennial grass species: Bouteloua gracilis, Agropyron smithii, Schizachyrium scoparium, and Andropogon gerardii from eight locales in South Dakota. Active-colony plants were more frequently and more heavily grazed than those at other grazed locales. In situ, plants from heavily grazed populations were smaller and more prostrate than those from populations with little to no grazing (including the extinct colony) and interpopulation variation corresponded to current gr ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Clipping and long-term grazing effects on biomass and carbohydrate reserves of Indian ricegrass: Journal: Journal of Range Management; Authors: A. B. Orodho, and M. J. Trlica; Date: 1990; Summary: Long-term heavy grazing had little effect on root and crown biomass of Indian ricegrass (Oryzopsis hymenoides), nor did it significantly affect the total nonstructural carbohydrate (TNC) reserve levels or the seasonal cycle of reserves in this grass. Orodho and Trlica conclude that 50 years of protection from livestock use had not resulted in ecotypic differentiation in Indian ricegrass for these variables. Clipping reduced crown biomass more than root biomass and removal of 90% of aboveground biomass resulted in more than a 50% reduction in crown biomass and reserve car ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article