Farmland bird monitoring in North-east Germany from 1999-2002

Farmland birds are used as an indicator for the overall biodiversity on agricultural lands summarizing the effects over the whole food pyramide. The composition, frequency and diversity of the bird communities at 117 sample points, representative for a whole landscape have been monitored over a periode of 4 years in 1999-2002. The monitoring was carried out over 5 month per year according to the stop-count-method, differntiated between two distances from the counting point.