Fig. 2. Time series of the degree of landscape fragmentation in Baden-Württemberg since 1930, obtained by using the effective mesh size (meff; in km²); e.m.r. = excluding municipal roads (upper curve), i.m.r. = including municipal roads (lower curve); with and without noise bands (data on traffic volume were available for only three points in time). The lower the value of the meff the higher the degree of landscape fragmentation.