出版社：Arbeitsgemeinschaft Forstliche Standorts- und Vegetationskunde (AFSV)
摘要：For the assessment of biodiversity in agrarian landscapes (here in case of breeding birds) an effective, random sampling based monitoring approach was developed. It was practically tested in the federal state of Brandenburg in the years 2005 and 2006. The number of species at 1 km2 observation sites ranged between 5 and 41 (mean 22.2) and the number of reveres ranged between 21 and 217 (mean 80.3) in the whole Brandenburg above both the years. The enormous variation shows a high potential of species diversity and population abundance on the one hand and extreme poverty on the other hand. The species inventory demonstrates a narrow relation to landscape structure. Methodical experience of this special bird monitoring approach can be also used for creating new survey approaches considering other ecological variables in order to verify the effect of agri-environmental measures as well as to develop new agri-environment programmes at field and landscape level. The approach has proved its usefulness concerning ecological results as well as technical and organizional flexibility.
