Contribution \ue0 la connaissance du d\ue9veloppement postembryonnaire de Craspedosoma alemannicum Verhoeff et de Xylophageuma zschokkei Bigler (Diplopoda, Nematophora) dans une tourbi\ue8re du HautJura suisse

Volume: 85Start Page: 673End Page: 67

R\ue9vision de quelques esp\ue8ces de Diplopodes d\ue9crites par Fa\uebs, Rothenb\ufchler et Verhoeff. I. Trimerophorella, Janetschekella (Chordeumatida) et Polydesmus alticola (Polydesmida)

Volume: 100Start Page: 961End Page: 96

Faunistique des mille-pattes de Suisse (Diplopoda)

Volume: 169Start Page: 281End Page: 28

Rhymogona (Diplopoda, Craspedosomatidae), un genre monosp\ue9cifique. Deuxi\ue8me partie : r\ue9vision bas\ue9e sur les r\ue9sultats morphologiques, g\ue9n\ue9tiques et faunistiques

Volume: 169Start Page: 53End Page: 6

Ecological and genetic studies on parapatric Rhymogona silvatica Roth. & R. cervina Verh. (Diplopoda: Craspedosomatidae) with special reference to hybrid populations in a zone of contact

Volume: 97Start Page: 349End Page: 35

The taxa of Rhymagona (Diplopoda : Craspedosomatidae): a ring species. Part one : genetic analysis of the population structure

Volume: 169Start Page: 45End Page: 5

Un genre oubli\ue9 d\u27Atractosomatinae des Alpes italo-suisses, Bomogona Cook, 1895 : statut, contenu, chorologie (Diplopoda, Craspedosomatida)

Volume: 14Start Page: 457End Page: 47

Variation in species richness of plants and diverse groups of invertebrates in three calcareous grasslands of the Swiss Jura mountains

Species richness and abundance of vascular plants and several groups of invertebrates (spiders, oribatid mites, diplopods, grasshoppers and bush crickets, ground beetles, butterflies and terrestrial gastropods) were recorded in three calcareous grasslands (Nenzlingen, Movelier and Vicques) in the northwestern Swiss Jura mountains. Species richness varied both between taxonomical groups and between sites (species richness ranges: 96-116 vascular plants, 60-66 spiders, 18 oribatid mites at each site, 1-7 diplopods, 10-16 grasshoppers and bush crickets, 19-21 ground beetles, 32-46 butterflies and 15-21 terrestrial gastropods). Species overlap (number of species that occured at all sites) was relatively large in terrestrial gastropods (59,1%), butterflies (56,5%), vascular plants (53,8%) and gasshoppers (47,1%), but relatively low in oribatid mites (32,3%), spiders (25,0%), ground beetles (18,4%) and diplopods (12,5%). Diversity expressed by the Shannon-Wiener index (H') was compared for five groups of invertebrates. Diversity was largest in spiders and ground beetles and lowest in terrestrial gastropods. Different taxonomical groups had their maximum diversity at different sites: each grassland had the highest diversity in a least one groupe. The three sites also varied in the abundance of different invertebrate groups. Most groups had the highest densities in Nenzlingen and the lowest densities in Vicques. All three sites contained a high proportion of species listed in the Red Data Book of Switzerland with values averaging 49,5% in grasshoppers and buch crickets, 28,9% in butterflies, 18,9% in vascular plants, 11,2% in terrestrial gastropods, and 6,7% in ground beetles. One spieder species (Oxyptila pullata) and two mite species (Epilohmannia cylindrica minima and Pergalumna myrmophila) were recorded for the first time in Switzerland