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15
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Introduction
Additional affiliations
January 2004 - May 2008
Publications
Publications (15)
River alterations for natural hazard mitigation and land reclamation result in habitat decline and fragmentation for riparian plant species. Extreme events such as floods are responsible for additional local species loss or population decline. Tributaries might provide refugia and subsequent source populations for the colonization of downstream sit...
River relocations due to realization of infrastructure projects or flood protection provide a high potential for ecological restorations and the creation of near-natural habitats. Colonization success of new riparian habitats in the dynamic riverine zone is rarely predictable, as the survival of sessile plants is highly dependent on flood events. R...
Context
Riparian areas are considered to undergo major alterations under changing climate, making floodplain habitats targets for conservation and landscape planning. Protected areas might provide sanctuaries especially for sessile riparian plant species, but these niches are not always persistent over time.
Objectives
We investigate if plant spec...
Protected areas with restricted management can provide refugia for fungi, but are usually selected based on conservation strategies for flora and fauna. Despite the important role of fungi in floodplains, they are rarely considered in conservation projects. The SwissFungi database covering all biogeographic regions in Switzerland, and consisting of...
Alterations of riparian areas of running waters resulted in fragmentation of the riverscape. The possible impact of climate change additionally stresses the importance for conservation planning for riparian habitats, especially for sessile plant species. The survival of species under changing habitat availability can be counteracted by ensuring fun...
Nach erfolgreichem Abschluss der interdisziplinären Vorgängerprojekte «Rhone-Thur», «Integrales Flussgebietsmanagement » und «Geschiebeund
Habitatsdynamik» wurde im Rahmen des durch das Bundesamt
für Umwelt (BAFU) unterstützten Forschungsprogramms
«Wasserbau und Ökologie» ein neues Projekt gestartet,
welches sich auf die Sedimentdynamik und Vernetz...
Riparian areas and their plant communities are threatened due to human exploitation and habitat loss. Conservation of riparian vegetation requires knowledge on limiting factors in the biology of species preventing its spread along suitable areas. It needs to be assessed if an endangered species is trapped in an extinction vortex or whether it can r...
Single locus studies might not resolve phylogenetic relationships and the evolutionary history of taxa. The analysis of multiple markers promises higher resolution, and congruence among loci may indicate that the phylogenies represent the underlying species history. Here, we examine the utility of a genome-wide approach based on amplified fragment...
Variation in social and mating behaviour among individuals or species can rarely be traced to its genetic basis. A notable exception is social behaviour in Microtus voles, which has been causally linked to polymorphisms in the arginine vasopressin 1a receptor (Avpr1a) gene region. A repetitive expansion in the promoter region of Avpr1a was interpre...
The arginine-vasopressin 1a receptor has been identified as a key determinant for social behaviour in Microtus voles, humans and other mammals. Nevertheless, the genetic bases of complex phenotypic traits like differences in social and mating behaviour among species and individuals remain largely unknown. Contrary to previous studies focusing on di...
Complex social behavior in Microtus voles and other mammals has been postulated to be under the direct genetic control of a single locus: the arginine vasopressin 1a receptor (avpr1a) gene. Using a phylogenetic approach, we show that a repetitive element in the promoter region of avpr1a, which reportedly causes social monogamy, is actually widespre...
The level of genetic differentiation within and between evolutionary lineages of the common vole (Microtus arvalis) in Europe was examined by analyzing mitochondrial sequences from the control region (mtDNA) and 12 nuclear microsatellite loci (nucDNA) for 338 voles from 18 populations. The distribution of evolutionary lineages and the affinity of p...
The phylogeography of the common vole (Microtus arvalis) was examined by analysing mitochondrial DNA (mtDNA) sequence variation in 1044 base pairs (bp) of the cytochrome b (cytb) gene and in 322 bp of the control region (ctr) among 106 individuals from 58 locations. The geographical distribution of four previously recognized cytb evolutionary linea...
