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Plant diversity change for cities and their surroundings is well documented. For rural areas such studies are difficult as literature data are mostly insufficient. We reconstructed phytodiversity change in the Feldatal community (Germany, Hesse) by comparison of historical herbarium collections (1945–1976, Hans Hupke) with a recent floristic survey (2012). The study area is a rural area typical for Central Europe, dominated by agriculture and forestry and with a stable human population. Floristic diversity decreased (683 to 497 species; 31% of the total flora), principally by disappearance of species of unimproved grassland, fields and villages. The small number of newly documented species (33 spp.; 5% of total flora) comprises mostly naturalized ornamentals and salt tolerant species along roads. Plant diversity change of the last decades in rural landscapes in Central Europe was mainly dependent on the intensification of agriculture.
Die Pflanzensammlungen im Osnabrücker Museum am Schölerberg dokumentieren auf einzigartige Weise die Entwicklung der Flora Nordwestdeutschlands. Das Herbarium des Naturforschers Matthias Brinkmann (1879-1969) zählt mit zu diesen stummen Zeitzeugen. Die vorliegende Arbeit listet alle von Brinkmann in der Zeit zwischen 1945-1960 in Nordwestdeutschland gesammelten Belege mit ihren Fundangaben auf. Die Daten werden mit Karten aus bereits vorhandenen Verbreitungsatlanten verglichen und alle Neufunde sowie interessante Belege bemerkenswerter Arten werden kommentiert.