Pwllpeiran

Pwllpeiran, Ceredigion
In 1989 a series of 2ha paddocks were established across Pen y Garn hill with different stocking rates. One aim was to examine the impacts of seasonal stocking density on vegetation composition.

In 1996 a nitrogen addition experiment was created in two of the paddocks (a 'light' and 'heavy' grazed paddock). This involves fortnightly additions of ammonium sulphate and sodium nitrate to replicated plots. The objective of the work is to determine the interaction between grazing pressure and nitrogen deposition on the re-establishment of dwarf shrubs and species richness. Also to determine changes in nitrogen fluxes and critical chemical values in soils, vegetation and waters, which are indicative of changes in species performance.

Pwllpeiran

 

Page last modified: 09/11/2010
Page published: 27/08/2010