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The density of Pteronia pallens (Asteraceae), a shrub toxic to sheep, increased in Karoo rangeland at the expense of a congeneric palatable shrub, P. ...
Read moreThe long term effects of sheep grazing were investigated by comparing soil chemistry, the distribution of nutrients in vegetation and the nutrient sup...
Read morePlague, introduced from Eurasia around 1900, today affects many animal species in the western part of North America, including black-tailed prairie do...
Read moreNumerous studies describe thresholds at which transitions between alternate ecosystem states occur but few quantitatively delimit these conditions and...
Read moreIdentifying the mechanisms that facilitate invasion is crucial for the design of preventative measures and understanding the invasion process, but not...
Read moreEfforts to restore water quality in Chesapeake Bay and its tributaries often include extensive Best Management Practice (BMP) implementation on agricu...
Read moreLivestock grazing has degraded many arid and semi-arid rangelands around the world, and the drier climate predicted by climate change scenarios may am...
Read moreHuman modification of landscapes and associated disturbances may facilitate the emergence and spread of zoonotic diseases. Policy-makers need better u...
Read moreDroughts are projected to increase in magnitude, frequency and duration in the near future. In rangelands, the provision of valuable ecosystem service...
Read moreWhile abiotic drivers of yields represent important limiting factors to crop productivity, the role of biotic drivers that could be directly managed b...
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