Joachim Besold

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The habitats of many species are fragmented. Therefore, the survival in a metapopulation depends on the stability of the single populations and the amount of movements between patches. We chose the calcareous grassland specialist butterfly species Polyommatus coridon as a model. As study area, we selected a mosaic-like landscape in Rhineland-Palatinate(More)
In the late 80ths we constructed a light fibre interferometer, which could measure the voltage-induced thickness variations of piezoelectric samples down to some few picometres. The principle of the interferometer is explained and four methods to minimize noise. With this sensor, we started a home-made PFM in February 1993. The very first pictures are shown(More)
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