Avian assemblages associated with different grasslands managements in cattle production systems in the pampas of Argentina

Modifications in the structure of grasslands have been responsible for decline several avian species due to a reduced quality available habitat. Currently, applications herbicide glyphosate introduced promote winter forage production Flooding Pampas Argentina. Rotational grazing has another technique used production. Here, we evaluated different managements cattle systems on richness, composition, and abundance bird assemblages Pampas. We put emphasis responses two neartic migratory shorebirds, Buff-breasted Sandpiper (Calidris subruficollis) American Golden Plover (Pluvialis dominica). The three treatments natural grassland were: (1) paddocks Ryegrass growth promotion through application glyphosate; (2) managed with grazing, 3) Continuous grazing. considered periods breeding cycle birds (early, late, post-breeding) years (2011/2012, 2012/2013). Vegetation cover lower than 10 cm was greater both sites comparison ryegrass sites. A NMDS analysis revealed clear separation communities among treatments. total short promotion. An indicator associations shorebirds Grassland management had an effect Pampas, which negative particularly Nearctic migrants conservation importance.