Dissolved and gaseous nitrogen losses in forests controlled by soil nutrient stoichiometry

Aqueous And Gaseous Nitrogen Losses Induced By Fertilizer Application

Gaseous Losses of Nitrogen from Green Plants. Ii. Studies with Excised Leaves in Nutrient Media.

In the previous paper (1) of this series, studies to determine whether gaseous losses of nitrogen occur from cultures of Chlorella and Lemna when grown on various sources of nitrogen, showed that no losses occurred except for one minor exception. In this one case slight losses of nitrogen from Chlorella cultures, grown on ammonium nitrate, did occur. The significance of this finding is somewhat...

Consequences of Nitrogen Additions for Soil Processes and Solution Losses from Wet Tropical Forests

Wet tropical forests growing on highly weathered soil, depleted in rockderived nutrients, yet rich in nitrogen (N), may respond quite differently to anthropogenic N inputs than those growing on younger soils low in N. We evaluated the effects of firsttime and long-term N additions on the pattern and regulation of hydrologic N losses from wet tropical forests located at the extreme ends of a soi...

Isotopic evidence for large gaseous nitrogen losses from tropical rainforests.

The nitrogen isotopic composition (15N/14N) of forested ecosystems varies systematically worldwide. In tropical forests, which are elevated in 15N relative to temperate biomes, a decrease in ecosystem 15N/14N with increasing rainfall has been reported. This trend is seen in a set of well characterized Hawaiian rainforests, across which we have measured the 15N/14N of inputs and hydrologic losse...

Postfire Effects on Soil Properties and Nutrient Losses

The effects of a wildfire, occurred in August 1992, on nutrient losses by water erosion have been studied. The fire affected an area of 9498 ha of Pine forest and shrub, located in Sierra Calderona (Valencia, Spain). In the burned area, six stations of erosion measurement were set up immediately after the end of the fire. The results obtained in these stations are reported. Topographical, edaph...