Abstract

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.

Highlights

  • BioOne Complete is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses

  • Aufgrund des Klimawandels treten in jüngster Zeit vermehrt warme Winter auf

  • Oberflächlich betrachtet, sieht man bei rein quantitativen, Abtropfgewicht-basierten Biomassebetrachtungen ohne Fang­­ zahlen zu ermitteln und Arten zu bestimmen (Sorg et al 2013, Hallmann et al 2017) eventuell nur die Fluktuationen einer eudominanten Art. Obwohl A. farinosa nur eine Generationsdauer von einem Jahr besitzt, wir 33 Generationen überblicken können, treten in dieser Zeit bei der Zusammenfassung aller Stadien nur drei Maxima und zwei Minima auf

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Summary

Introduction

BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses. Bei unseren Untersuchungen im Rebgelände des Kaiserstuhls traten sowohl adulte Tiere (n = 18329) als auch Juvenilstadien (n = 13856) von Alopecosa farinosa mit hohen Fangzahlen auf.

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