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Population trends of birds across the iron curtain: Brain matters

Jiri Reif, Auteur ; Katrin Boehning-Gaese, Auteur ; Martin Flade, Auteur ; Johannes Schwarz, Auteur ; Monika Schwager, Auteur

Dans Biological Conservation (144(10) OCT 2011)

One approach to assess human impact on species' population dynamics is to correlate ecological traits of species with their long-term population trends. Yet, few studies investigated population trends in multiple regions that differ in human imp[...]

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Results of the German Common Birds Census. Part I: Population changes of urban breeding birds since 1989

Johannes Schwarz, Auteur ; Martin Flade, Auteur

Dans Vogelwelt (Die) (121(2-3) 2000)

This paper presents the first detailed analysis of data from the German Common Birds Census (DDA-Monitoringprogramm), which was initiated in 1989 to detect population changes in relatively common breeding birds. Results for 24 typical species of[...]

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Results of the German Common Birds Census, part II: population changes in German forest birds 1989-2003.

Martin Flade, Auteur ; Johannes Schwarz, Auteur

Dans Vogelwelt (Die) (125(3-4) 2004)

The German Common Birds Census, which runs since 1989 and is based on territory mapping and point counts, provides reliable data (TRIM index curves) on the population changes of 52 German forest bird species. Despite free choice of plots and rou[...]

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