Anselm Helbig

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Multiple sources of evidence show that the skuas (Aves:Stercorariidae) are a monophyletic group, closely related to gulls (Laridae. On morphological and behavioural evidence the Stercorariidae are divided into two widely divergent genera, Catharacta and Stercorarius, consistent with observed levels of nuclear and mitochondrial gene divergence. Catharacta(More)
To understand the evolution of ecological niches it is important to know whether niche evolution is constrained by phylogeny. We approached this question for Sylvia warblers by testing if closely related species are more similar in 20 ecologically relevant morphological traits than distantly related species. Phylogenetic relatedness was quantified using a(More)
We describe a workflow to translate a given metabolic network into a kinetic model; the model summarises kinetic information collected from different data sources. All reactions are modelled by convenience kinetics; where detailed kinetic laws are known, they can also be incorporated. Confidence intervals and correlations of the resulting model parameters(More)
Because of the differential amplitude of climatic oscillations, species living at northern latitudes are subject to more frequent and more severe range oscillations than species at southern latitudes. As a consequence, northern populations should, on average, be phylogenetically younger and possess less phylogeographical structure than closely related taxa(More)
The mechanisms by which migratory birds find their way from breeding grounds to winter quarters and back have been the subject of intensive research during the past four decades. Birds are equipped with genetic information about the migratory direction, and they can use the earth's magnetic field, star patterns and the sun and/or skylight polarization(More)
The following table contains the complete list of the 105 software tools that were considered in the questionnaire plus 24 additional software tools that were mentioned by the respondents. These additional tools are marked with an asterisk behind the name. The table also contains all the comments that were given for the different tools. We did not edit the(More)
1 2 Abstract The System Biology Markup Language (SBML) is a common language for expressing biochemical sets of reactions that are accompanied by mathematical statements such as kinetic infomation. The program semanticSBML provides the systems biology community with the ability to integrate (merge) and annotate models with MIRIAM annotations. User interfaces(More)
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