ARACHNOLOGISCHE GESELLSCHAFT

Heft 4 (1992)

Aspekte der Vertikalverteilung von Spinnen (Araneae) an Kiefernstämmen

Aspects of vertical distribution of spiders (Araneae) on pine trunks

Abstract

From May to October 1991, spiders on pine trunks in a moorish pine forest in the Federsee nature reserve in Upper Swabia were caught with arboreal photoeblectors. To register vertical differences of intensity of activity, the eclectors were attached at different heights above the ground, one eclector on each trunk. Abiotic parameters (temperature, evaporation), the structure of the bark and its epiphytes were recorded. 108 species from 19 families were found. Most frequent were the families Linyphiidae, Theriidae and Anyphaenidae. The most abundant species was Entelecara penicillata. Intensity of activity, ecotype, dominance structure, dominance identity, diversity and eveness were used as parameters to investigate vertical changes in fauna structure. The investigations showed that the lowest trunk-region is frequently used by spiders normally living the field layer or the litter. These species, however, hardly ever climb up to higher regions. On the other hand, the eclector faunas of the middle and especially of the highest parts of the trunks near the canopies are heavily influenced by the canopy fauna. Several epitruncal species also show preferences for these different trunk-regions. Ecological and abiotic parameters show that the upper trunk-region is a much more extreme habitat than the lower one and the fauna structures are in accordance with this.

Liste der Spinnen Baden-Württembergs (Araneae). Teil 2: Liste der Spinnen Baden-Württembergs excl. Linyphiidae, Nesticidae, Theridiidae, Anapidae und Mysmenidae

List of the Spiders of Baden-Württemberg (Germany). Part 2: List of the Spiders of Baden-Württemberg excl. Linyphiidae, Nesticidae, Theridiidae, Anapsidae and Mysmenidae

Abstract

The checklist contains informations about the spiders recorded from Baden-Württemberg since 1898.

Wiederfunde von Ballus rufipes in Deutschland (Araneae: Salticidae)

Ballus rufipes retrieved in Germany (Araneae: Salticidae)

Spinnenfänge in Magerwiesen und Brachen aus dem Tessin – unkommentierte Artenlisten

Spiders from nutrient-poor grasslands and fallow lands from Ticino – uncommented species lists

Arachnologische Mitteilungen 4, 1992

Arachnologische Mitteilungen 4, 1992

Cover/Contents Arachnologische Mitteilungen 4, 1992

Cover/Contents Arachnologische Mitteilungen 4, 1992

Entschuldigung!

Abstracts der Vorträge und Poster des Treffens der deutschsprachigen Arachnologen in Basel vom vergangenen September

Abstracts der Vorträge und Poster des Treffens der deutschsprachigen Arachnologen in Basel vom vergangenen September

Checkliste der europäischen Agelenidae