Filters: Tags: Deserts (X)484 results (57ms)
We examined the content and isotopic composition of nitrogen within soils of a juniper woodland and found that a cryptobiotic crust composed of cyanobacteria, lichens, and mosses was the predominant source of nitrogen for this ecosystem. Disturbance of the crust has resulted in considerable spatial variability in soil nitrogen content and isotopic composition; intercanopy soils were significantly depleted in nitrogen and had greater abundance of 15N compared to intra-canopy soils. Variations in the 15N\14N ratio for inter- and intracanopy locations followed similar Rayleigh distillation curves, indicating that the greater 15N/14N ratios for inter-canopy soils were due to relatively greater net nitrogen loss. Coverage...
Benefits of protective fencing to plant and rodent communities of the western Mojave Desert, California
Population constraints associated with the use of black rhinos as an umbrella species for desert herbivores
Effects of cement-kiln dust pollution on the vegetation and seed-bank species diversity in the eastern desert of Egypt
Runoff and erosion from a mosaic tobosagrass and burrograss community in the northern Chihuahuan Desert grassland
Latitudinal trends, population size and habitat preferences of the Damara Tern Sterna balaenarum on Namibia's desert coast
Mercury speciation and distribution in a polar desert lake (Lake Hoare, Antarctica) and two glacial meltwater streams