Weighing species in tall grass vegetation

Abstract

Usual methods of survey cannot be used in tall grass vegetation (over 2 m high). The authors recommand that 33 quadrats be analysed with a 1 m x 1 m U-frame. For each one of them a Iist of the species is written up, whose abundance-dominance weight is given by using a simplified grade ranging from 0 to 3. For each species, the 33 grades are added in order to obtain the final weight grade ranging from 0 to 99.