Incorporation of the N-labeled simulated arthropod rain in the soil food web.

Direct trophic links between aboveground and belowground animal communities are rarely considered in food web models. Most invertebrate animals inhabiting aboveground space eventually become prey of soil predators and scavengers forming a gravity-driven spatial subsidy to detrital food webs, but its importance remains unquantified. We used laboratory-grown N-labeled Collembola to trace the incorporation of arthropod rain into soil food webs.

Taxonomic diversity and abundance of enchytraeids (Annelida, Clitellata, Enchytraeida) in the Northern Palaearctic. 1. Asian part.

Background: Enchytraeids, or potworms, are tiny oligochaetes that are distributed worldwide in many terrestrial, freshwater and marine ecosystems. Despite their key role in the functioning of ecosystems, the diversity and abundance of Enchytraeidae are rarely studied due to the laborious process of species identification. The present study addresses this gap and sheds some light on the distribution and abundance of enchytraeids in the lands of the Northern Palearctic.

Ontogenetic instars of the oribatid mite Tyrphonothrus digeluensis sp. nov. (Acari, Oribatida, Malaconothridae) from Ethiopia.

A new species of the genus Tyrphonothrus (Oribatida, Malaconothridae) is described from Ethiopia, based on adult and juvenile instars; it is collected from mosses on the swamp at the top of the mountain in Arsi Mountains National Park. Tyrphonothrus digeluensis sp. nov.

DNA Barcoding versus Morphological Variability of (Kirby, 1837) (Coleoptera, Carabidae) in the Arctic and Subarctic.

The geographic patterns of genetic and morphological variability in ground beetles were examined throughout Northern Eurasia and North America using the most abundant circumpolar tundra subspecies, (Kirby, 1837), as a model. Phylogenetic structure was assessed on the basis of a Bayesian approach using two DNA markers (partial sequences of the COI and 28S rRNA genes), while phylogeographic patterns and population genetic diversity were estimated using the COI gene only. Morphological patterns were analysed using elliptical Fourier coefficients that were calculated based on the pronotum and male genitalia shape outlines.