Jutta Barthel: Einfluss von Nutzungsmuster und Habitatkonfiguration auf die Spinnenfauna der Krautschicht (Araneae) in einer süddeutschen Agrarlandschaft
Jutta Barthel: Einfluss von Nutzungsmuster und Habitatkonfiguration auf die Spinnenfauna der Krautschicht (Araneae) in einer süddeutschen Agrarlandschaft
book review
Abstract
book review: Jutta Barthel: Einfluss von Nutzungsmuster und Habitatkonfiguration auf die Spinnenfauna der Krautschicht (Araneae) in einer süddeutschen Agrarlandschaft
Tagungsbericht zum Workshop "Autökologische Einstufung von Spinnen" am 23.11.96 auf Gut Sunder veranstaltet durch die Nordwestdeutsche Arachnologische Arbeitsgemeinschaft (NOWARA) unter der Leitung von A.Lisken-Kleinmans und H.-C.Fründ
Tagungsbericht zum Workshop "Autökologische Einstufung von Spinnen" am 23.11.96 auf Gut Sunder veranstaltet durch die Nordwestdeutsche Arachnologische Arbeitsgemeinschaft (NOWARA) unter der Leitung von A.Lisken-Kleinmans und H.-C.Fründ
Araneae; congress report; ecological classification
Abstract
congress report, ecological classification of spiders
Darstellungsmöglichkeit der Zugehörigkeit von Spinnenzönosen zu Pflanzenformationen. Mit einem Beispiel aus der Auenlandschaft im Nationalpark "Unteres Odertal"
Different ways to describe the affiliation of spider communities to defined plant associations
Araneae; plant association; floodplain
Abstract
Two different approaches of transferring research-data into diagrams are explained. Using an example from foodplain stands of the river Oder (National Park 'Lower Oder Valley'), the possible implications on and differences in the interpretation of the results, depending on the chosen method, are discussed.
Untersuchungen zur Spinnenzönose (Araneae) der Stamm- und Kronenregion von Eichen unterschiedlich genutzter Waldstandorte unter Verwendung des Ökotypensystems nach Platen
Studies on the spider coenosis (Araneae) of the trunk and canopy region of oaks in differently managed forest areas with reference to the Platen ecotype system
Araneae; Quercus robur; trunk fauna; canopy fauna; eclectors; forest management; ecotypes
Abstract
In 1995 the spider coenosis of two differently managed forest areas with Querco-Carpinetum communities were investigated near Bonn. In order to collect the canopy and trunk fauna two trunk-photo-eclectors and six bough-photo-eclectors were used in each study site. According to the PLATEN ecotype sysem, 16 different ecotypes of spiders were found. The highest abundances of both species and individuals were recorded for excusively arboricolous and for bark inhabiting spiders. Against the expectations a high number of non-arboricolous species and many xerophilous woodland inhabiting spiders were found. According to the PLATEN ecotype system, the latter are actually typical for mixed pine forests. The PLATEN ecotype system showed clear differences between the strata, but not between the study areas.
Ermittlung charakteristischer Spinnengemeinschaften von Biotoptypen am Beispiel der nordwestdeutschen Küstenregion
Investigation of characteristic spider communities of biotope types taking the northwest German coastal area as an example
spider communities; biotope types; classification method
Abstract
A classification method for ascertaining characteristical spider communities of different biotope types is presented. Based on a current list of biotope types all data available from a certain area about the spatial distribution of spiders were fed into a data bank an analysed. A largely standardized method has been developed which allows to classify the spider community of each biotope type. The classification is based on a presence/absence matrix and a comparison between the grades of presence in different biotope types.
Spinnenfänge aus Magerwiesen der Kantone Genf und Waadt (Schweiz) – Unkommentierte Artenlisten
Spiders of dry, unfertilized grasslands in the Cantons of Geneva and Vaud (Switzerland) – species lists
Araneae; spider
Abstract
Spiders of dry, unfertilized grasslands in the Cantons of Geneva and Vaud (Switzerland) – species lists
Changes in epigeic spider community in primary succession on a brown-coal dump
Changes in epigeic spider community in primary succession on a brown-coal dump
Primary succession; spiders; mine dump; diversity; ordination; cluster analysis; Slovakia
Abstract
A descriptive model of primary succession of spiders on a brown-coal dump is presented. Multivariate methods (cluster analysis and detrended correspondence analysis), and community indexes were applied to evaluate changes in community composition of epigeic spiders. Two different rehabilitation age stages were investigated. The cluster analysis helped to determine a case of horizontal asynchronous succession. The DCA was able to distinguish divergent trends of succession from the initial stage. Successional trends in species replacements were observed. In all aspects of succession there was found to be directional towards a "ruderal steppe" subclimax.
Die epigäische Spinnenzönose (Araneae) auf Schotterbänken der Mittelgebirgsbäche und -flüsse im Rheinischen Schiefergebirge
Spider community (Araneae) of gravel bars along streams in lower mountainous areas (Rheinisches Schiefergrbirge, Northern Hesse, Germany)
Araneae; gravel bar; small streams; Hesse; Germany
Abstract
The spider communities on gravel bars along streams in lower montainous areas of Northern Hess were investigated. Eight streams differently altered by human impact were studied: four small streams without weirs and impoundments, two regulated small streams and two larger regulated streams. The sampling sites were located in one kilometer streches of the upper, middle and lower reach of each small stream, respectively. In addition the gravel bars in several floodplain sections of larger streams were investigated. Altogether 592 quantitative samples of spiders were made. 7027 spiders (Araneae) comprising 77 species were encountered. Only two species (Oedothorax agrestis, Pirata knorri) make up more than 70 percent of all spiders captured. Erigone atra and Erigone dentipalpis were frequently foung along all streams investigated. While Diplocephalus permixtus and Diplocephalus protuberans were only encountered along the small streams, Oedothorax retusus and Pardosa amentata were predominantly recorded on gravelbars of large streams. Diplocephalus protuberans was recorded for the first time in Hesse. The mean abundances (median) ranged between 4 and 28 individuals/m2. 198 individuals/m2 have been the maximum of abundance.