TY - JOUR TI - Interactive effects of grazing and burning on wind- and water-driven sediment fluxes: Rangeland management implications AU - Field, Jason P. AU - Breshears, David D. AU - Whicker, Jeffrey J. AU - Zou, Chris B. T2 - Ecological Applications AB - Rangelands are globally extensive, provide fundamental ecosystem services, and are tightly coupled human-ecological systems. Rangeland sustainability depends largely on the implementation and utilization of various grazing and burning practices optimized to protect against soil erosion and transport. In many cases, however, land management practices lead to increased soil erosion and sediment fluxes for reasons that are poorly understood. Because few studies have directly measured both wind and water erosion and transport, an assessment of how they may differentially respond to grazing and burning practices is lacking. Here, we report simultaneous, co-located estimates of wind- and water-driven sediment transport in a semiarid grassland in Arizona, USA, over three years for four land management treatments: control, grazed, burned, and burned grazed. For all treatments and most years, annual rates of wind-driven sediment transport exceeded that of water due to a combination of ongoing small but nontrivial wind events and larger, less frequent, wind events that generally preceded the monsoon season. Sediment fluxes by both wind and water differed consistently by treatment: burned + grazed \textgreater burned \textgreater grazed ≥ control, with effects immediately apparent after burning but delayed after grazing until the following growing season. Notably, the wind : water sediment transport ratio decreased following burning but increased following grazing. Our results show how rangeland practices disproportionally alter sediment fluxes driven by wind and water, differences that could potentially help explain divergence between rangeland sustainability and degradataion. © 2011 by the Ecological Society of America. DA - 2011/// PY - 2011 DO - 10.1890/09-2369.1 VL - 21 IS - 1 SP - 22 EP - 32 SN - 10510761 KW - Aeolian transport KW - Erosion KW - Fire KW - Fluvial transport KW - Grassland KW - Livestock KW - Resource redistribution KW - Sediment transport KW - Soil ER -