Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Aeolian dust in a saline playa environment, Nevada, U.S.A.

Abstract

The transport of aqueous-soluble solutes in dust was investigated along a transect from a barren salt-encrusted playa surface, a pluvial lake beach and dune-mantle upland in the Eagle Valley, Nevada, USA, between July 1994 and June 1996. There was a significant interaction (P≥0.05) between the solute in aeolian dust and trap location (playa, beach, dune) and time of collection. On the playa surface the collectors contained considerably more solutes, and their flux was much greater than on beach or dune locations. The solutes content of aeolian dust was greatest in the surface 5 cm of soil, probably because of the playa hydrology. Increases in potassium, nitrate, ammonium, S and salt content of aeolian dust were likely to be responsible for the invasion of Salsola paulsenii.