Ecological analysis of molluscs in the Bavarian Forest National Park

As part of the BIOKLIM Project, data was obtained for various groups of animals and plants, as well as for environmental factors. The following analysis concerns only the molluscs (Gastropoda, Bivalvia). Altitude, stand age, magnesium and pH values of soil were identified as main influencing variables for abundance of individuals, using quasi-Poisson models. The parameter “number of plant species” (VegRich) and management type also affect the species number. Individual species are influenced by very different factors, resulting partly from their highly specialized habitat requirements, so that their abundance can not always be described directly in terms of the measured and collated influencing variables. The mollusc-assemblages are determined most of all by altitude above sea level, temperature and light conditions (openness of canopy), as demonstrated using several different methods of statistical analysis.Im Rahmen des BIOKLIM-Projekts wurden im Nationalpark Bayerischer Wald Daten zu verschiedenen Tier- und Pflanzenarten sowie Umweltfaktoren erhoben. Die folgende Auswertung beschränkt sich auf die Weichtiere (Gastropoda, Bivalvia). Ziel war es, herauszufinden, welche Umweltfaktoren die Arten- und Individuenanzahlen beeinflussen, was die Lebensgemeinschaften steuert und welche Parameter sich auf ausgewählte Einzelarten auswirken. In Quasi-Poisson-Modellen haben sich als Einflussgrößen für die Individuenanzahl Höhe, Alter, Magnesium und pH-Wert feststellen lassen. Auf die Artenanzahl wirkte sich der Vegetationsreichtum, die Höhe und der Managementtyp aus. Die Einzelarten werden von sehr unterschiedlichen Faktoren beeinflusst. Die Lebensgemeinschaften werden vor allem von der Höhe über dem Meeresspiegel, der Temperatur und dem Auflichtungsgrad bestimmt, was sich in verschiedenen Ordinationsverfahren gezeigt hat

Herausforderung klimaneutrale Mietwohngebäude

Die Dekarbonisierung der Mietwohnungsbestände ist zwingende Voraussetzung für die Einhaltung deutscher Klimaschutzziele. Hierzu ist eine schnelle und deutliche Verbesserung der Energieeffizienz unabdinglich. Aber: funktioniert der Markt für Energieeffizienz bei Mietwohnungen? Eine empirische Untersuchung auf dem Wuppertaler Mietwohnungsmarkt gibt Antworten darauf. Um die Sanierungsrate signifikant zu steigern, etwa durch eine höhere Zahlungsbereitschaft für Energieeffizienz, braucht es sowohl für Vermieter als auch für Mieter verbesserte Rahmenbedingungen

The Paradoxical Effect of Praise and Blame: Age-Related Differences

Blame and praise sometimes have a seemingly paradoxical effect: blame after failure sometimes leads to the impression that the recipient has a high ability. In contrast, praise after success can lead to an inference of low ability. Several studies showed this effect and its relation to concurrent sympathy ratings as well as to cognitive schemas underlying these estimations. The present study is the first to focus on differences across the adult lifespan regarding peoples’ ability and sympathy estimations of praised or blamed individuals. In this context, the causal schemas underlying peoples’ judgments were also investigated. The results show that seemingly paradoxical ability estimations were independent of age in contrast to reversed ability estimations (i.e., a praised individual is perceived as more capable than a blamed individual) decreasing with age. Moreover, age affected the estimation of a teacher’s sympathy for blamed and praised students in terms of a universal decrease with age. Finally, exclusive ability-related causal schemas were primarily used by older people and facilitated the occurrence of seemingly paradoxical ability estimations. The results provide a first base for future research on this largely neglected topic

In vitro selection of random RNA fragments to identify protein-binding sites within large RNAs

In vitro selection experiments have various goals depending on the composition of the initial pool and the selection method applied. We developed an in vitro selection variant that is useful for the identification of minimal RNA binding sites for proteins within large RNAs. A pool of randomly fragmented RNA is constructed from a large RNA, which is the natural binding partner for a protein. Such a pool contains all the potential binding sites and is therefore used as starting material for affinity selection. A successful in vitro selection with the purified protein will identify the protein's natural RNA target site. The method has been developed for ribosomal systems and is a general approach providing a basis for the functional and structural characterization of large ribonucleoprotein particles

Pflanzenhefte : ein Hilfsmittel für den Unterricht in der Botanik

von StelzProgr.-Nr. 40