Post tagged: biodiversity


An application for the interactive building of taxonomies.


Biodiversity assessment demands objective measures, because ultimately conservation is an issue of economics, prioritizing the use of limited resources for preserving taxa. The most general framework for such metrics are those that assess evolutionary distinctiveness as judged by how much of a phylogeny is conserved. However, their applicability is …

Conserve IV

Assessing and prioritizing conservation schemes based on phylogenies.


While it would be best to preserve all species and populations, in the management of biodiversity it is often necessary to perform a triage. Decisions must be made as to which populations, species and habitats should be given the highest priority.

Other things being equal, these priorities should be …

The impact of species concept on biodiversity studies


Species are defined using a variety of different operational techniques. While discussion of the various methodologies has previously been restricted mostly to taxonomists, the demarcation of species is also crucial for conservation biology. Unfortunately, different methods of diagnosing species can arrive at different entities. Most prominently, it is widely …


Macroevolutionary Analysis & Simulation.


Phylogenies are smoking guns. An evolutionary history carrys in its very shape the fingerprints of every process that effected its creation: extinctions, key adaptations, radiations, colonizations, changes in the tempo and mode of macroevolution.

Unfortunately analysing phylogenies is difficult. The calculations of interest to any investigator are sometimes intricate …

Towards complete biodiversity assessment: an evaluation of the subterranean bacterial communities in the Oklo region of the sole surviving natural nuclear reactor


Groundwater bacterial rRNA sequences extracted from the natural nuclear reactor region of Gabon are used to demonstrate the application of phylogenetic methods to biodiversity assessment. Clones were provisionally placed in 'genera' using either the genus of the closest named EMBL entry, or by grouping clones at least 97.5 …