Track 1-1-2: Biodiversity, Growth and Management of Temperate and Mediterranean Grasslands
Description
The vegetation in the ecotone of mid valley in Río Negro (Argentina) varies in community composition and plant cover depending on the annual precipitation regime and on the temperature requirements of the plants species. The megathermic forage grasses are characterized by a C4 photosynthetic metabolism, their production is concentrated in summer, they are tolerant to drought, efficient in the use of water and nitrogen, they have a high potential for dry matter production and the nutritional quality necessary to meet the demands of cattle. North Patagonia is a semiarid temperate region with hot, dry summers and with forage resources ranging from plenteous to scarce from the river valleys to the plateau. The characteristics of Trichloris crinita, Distichlis spicata, Distichlis scoparia and Aristida mendocina were described and their consumption by cattle and forage quality were evaluated with the aim of finding a grazing schedule suitable for preserving and improving the valuable spontaneous grass populations in the ecotone area between the valley and the plateau.
Included in
Megathermic Spontaneous Grasses in the Mid Valley Ecotone, Rio Negro of Argentina
The vegetation in the ecotone of mid valley in Río Negro (Argentina) varies in community composition and plant cover depending on the annual precipitation regime and on the temperature requirements of the plants species. The megathermic forage grasses are characterized by a C4 photosynthetic metabolism, their production is concentrated in summer, they are tolerant to drought, efficient in the use of water and nitrogen, they have a high potential for dry matter production and the nutritional quality necessary to meet the demands of cattle. North Patagonia is a semiarid temperate region with hot, dry summers and with forage resources ranging from plenteous to scarce from the river valleys to the plateau. The characteristics of Trichloris crinita, Distichlis spicata, Distichlis scoparia and Aristida mendocina were described and their consumption by cattle and forage quality were evaluated with the aim of finding a grazing schedule suitable for preserving and improving the valuable spontaneous grass populations in the ecotone area between the valley and the plateau.
