Studies were conducted with eight tree species in natural grassland for 15 years (July 1988 to June 2003) under semi arid condition to select suitable tree species for introduction in natural grassland/sown pasture for higher production.

Dense plants are taking over grasslands in many areas; researchers in the U.S. Southwest are studying how they tap into water supplies--and how to keep them in check.

The efficacy of spider as indicator of habitat conditions in Tarai Conservation Area was examined. To compare habitat specific spider communities, five vegetation types were sampled from March 2005 to August 2006 by using pitfall traps and other semi-quantitative collection methods along transects.

Overgrazing accelerates soil and vegetation degradation in rangelands. So, Livestock Population Density-i.e. allocated number of sheep per ha can serve as an index for measuring pressure on range environment. For this purpose, Sadra region has been selected as the study area, where it is located in the upper reaches of Maharlu basin, Fars Province, Southern Iran.

Climate shifts over this century are widely expected to alter the structure and functioning of temperate plant communities. However, long-term climate experiments in natural vegetation are rare and largely confined to systems with the capacity for rapid compositional change. In unproductive, grazed grassland at Buxton in