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    Variation in specific composition and cover in grassland exposed to various grazing pressures in the Monte Rionegrino

    Peter G1,2, FA Funk3, A Loydi4, AI Casalini5, CV Leder4

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 233-237, 2012, DOI:10.32604/phyton.2012.81.233

    Abstract In the western Monte Phytogeographical Province of Rio Negro, vegetation is a shrubby-grassland steppe, where plants are interspersed within a bare soil matrix forming “phytogenic islands”. The objective of this study was to evaluate the specific composition and cover of the study ecological system under different grazing pressures. We selected areas with high, moderate and low grazing intensity at three sites. In each area we established five linear transects, where basal cover and all intercepted species were registered. Sites were arranged through a Principal Component Analysis using the Infostat software. We analyzed similarity between sites, considering basal cover and species… More >

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