Martin-Luther-Universität Halle-Wittenberg: Elektronische Zeitschriften
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Faunistisch-ökologische Untersuchungen der Gastropodenfauna von vier Auwaldgebieten in der Umgebung von Halle (S.)
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Übersicht über die Pflanzengesellschaften des südlichen Teiles der DDR: XI. Die Ruderalvegetation
Get PDFBeiträge zur Kenntnis der Vaucheriaceae: XVIII. Vaucheria pseudo-geminata Dangeard 1939 und eine bemerkenswerte Vaucheriengesellschaft aus dem Harz
No full textTyrphobionte und tyrphophile Zikaden (Hemiptera, Auchenorrhyncha) in den Hochmoor-Resten der Weser-Ems-Region (Deutschland, Niedersachsen)
Get PDFTyrphobiontic and tyrphophilous leaf- and planthoppers (Hemiptera, Auchenorrhyncha) in peat bog remnants of the Weser-Ems region (Lower Saxony, NW Germany). – Until the 1950s northwest Germany was characterized by large and more or less undisturbed peat bogs. During the last decades most of them have been destroyed or degraded, mainly by peat extraction. Today, some very small semi-natural remnants are left, most of them being officially protected as nature reserves. In 2004 we studied the Auchenorrhyncha fauna of 8 selected sites in the Weser-Ems region, focussing on tyrphobiontic and tyrphophilous species, in order to elucidate the situation of peat bog specialists. These data should provide a basis for landscape planning and nature conservation research in view of peat bog restoration. A total of 52 Auchenorrhyncha species was found, including 10 peatland specialists. The leafhopper Limotettix atricapillus has not been recorded during the last 40 years and, therefore, must be regarded as regionally extinct.Tyrphobiontic and tyrphophilous leaf- and planthoppers (Hemiptera, Auchenorrhyncha) in peat bog remnants of the Weser-Ems region (Lower Saxony, NW Germany). – Until the 1950s northwest Germany was characterized by large and more or less undisturbed peat bogs. During the last decades most of them have been destroyed or degraded, mainly by peat extraction. Today, some very small semi-natural remnants are left, most of them being officially protected as nature reserves. In 2004 we studied the Auchenorrhyncha fauna of 8 selected sites in the Weser-Ems region, focussing on tyrphobiontic and tyrphophilous species, in order to elucidate the situation of peat bog specialists. These data should provide a basis for landscape planning and nature conservation research in view of peat bog restoration. A total of 52 Auchenorrhyncha species was found, including 10 peatland specialists. The leafhopper Limotettix atricapillus has not been recorded during the last 40 years and, therefore, must be regarded as regionally extinct
New species of New World Tambiniini from palms: (Hemiptera: Fulgoroidea, Tropiduchidae)
Get PDFEine neue Gattung und Art, Diambon remanei nov. gen. nov. spec. aus Trinidad sowie zwei neue Arten der Gattung Athestia Melichar, 1914, A. excelsa nov. spec. aus Mexico und A. aschei nov. spec. aus Argentinien werden beschrieben. Biruga Fennah, 1944 wird mit ihrer Typusart B. chapada wieder errichtet. Die Gattung Athestia wird wiederbeschrieben. Ein Schlüssel der Tambiniini der Neuen Welt wird präsentiert. Alle neu beschriebenen Arten wurden von Palmen gesammelt.One new genus and species, Diambon remanei nov gen. nov. spec. from Trinidad and two new species of Athestia Melichar, 1914, A. excelsa nov. spec. from Mexico and A. aschei nov. spec. from Argentina, are described and illustrated. Biruga Fennah, 1944 is resurrected with its type-species B. chapadae. The genus Athestia is redescribed, and the genera and species of New World Tambiniini are keyed. All of the new species were collected from palms
On the 70th birthday of Prof. G.A. Anufriev
Get PDFVita and scientific career of Prof. Georgy Aleksandrovich Anufriev on occasion of his 70th birhtday with a list of his publications
Evolution of the Central Pyrenean Mérens fault controlled by near collision of two gneiss domes
Get PDFThe Mérens shear and fault zone (MSFZ) is a major orogen-parallel structure within the Variscan crystalline core of the Central Pyrenees, passing through rocks of various strength along its 70 km length. The nature of the MSFZ is strongly dependent on the competence contrast of the rock assemblages transected by it, and the presence of two large gneiss domes, the Aston and Hospitalet. A high-strain mylonite zone is developed in narrow subvertical bands of weak metasedimentary rocks where the spacing of the orthogneiss cores of the domes is minimal (ca. 300 m). In a transition zone west of the orthogneisses, the MSFZ grades into a northerly dipping reverse fault, separating amphibolite-facies mica schist with mylonitic bands to the north from phyllites displaying brittle-ductile fabrics to the south. Sense of shear along the ductile shear zone and the brittle fault indicates an overall dextral reverse motion, thrusting of the Aston dome over the Hospitalet dome to the south. Local shear directions respond to strain partitioning and are in accordance to an overall dextral transpressive regime. Near its western termination, local strain is minimal, deformation spread across several kilometres resulted in south-verging folds. Observed fabrics indicate a progression from ductile to brittle deformation, rather than two separate deformation events resulting in ductile shearing followed by brittle faulting. The development of the high-strain shear and fault zone is the result of the near collision of two large gneiss domes