process through which the balance among species within a natural community changes over time (R4)


a measured, designated land area used in a scientific study such as a vegetation survey (R4)

Montane bog

a permanently saturated opening of low vegetation in the rain forest situated on relatively level sites at upper elevations (R4)


long-term studies involving repeated surveys done in the same sites over time (C4, R4)


in vegetation studies, the number of plots a particular plant species or type appears in, expressed as a percentage of the total number of plots (R4)


a wild animal descended from domestic animals (R3, R4, IS1)


in vegetation studies, the area of ground overlain by a plant species or type, expressed as a percentage of the total ground area within a plot (R4)