Kobel-Lamparski A & Gack C
Die Wolfspinne Alopecosa farinosa (Araneae: Lycosidae) im Rebgelände des Kaiserstuhls: Populationsaufbau und Populationsdynamik in einem Zeitraum von 33 Jahren
The wolf spider Alopecosa farinosa (Araneae: Lycosidae) in the vineyard area of the Kaiserstuhl in south-western Germany: population growth and population dynamics for a period of 33 years
Alopecosa farinosa (Herman, 1879) is a photophilic and xerophilic wolf spider. It lives in the Kaiserstuhl in a large area, but only in non-wooded sites. It prefers south orientated slopes and adjacent vineyards. Alopecosa farinosa apparently does not balloon. It seems that the mother contributes to dispersal by carrying the juveniles around on the opisthosoma. Since 1979 we performed a continuous long-term study on the recolonization and succession of vineyard slopes after large scale land consolidations. This data from over 33 years shows an undulating trend of population development with a density variation of factor 3, superimposed by short time fluctuations caused by the weather. Alopecosa farinosa has a one-year generation cycle. The present long-time study provides an overview of 33 generations. Due to climatic changes in the last years the winters were warm. Consequently, Alopecosa farinosa changed from a stenochronic spring species to a stenochronic winter species.
climate change, long-term observation, pitfall traps, recolonization, succession, vineyard terraces