Measuring ecological quality status in low-diversity Arctic intertidal foraminiferal assemblages using a diversity-based index.

EcoQS assessment of the marine intertidal zone based on its fauna is challenging because the assemblages have a low diversity and consist of stress tolerant species. The new approach we propose is to pool foraminiferal diversity (effective number of species exp(H')) across the whole intertidal zone including the salt marsh and tidal flat. In seven fjordheads studied in northern Fennoscandia, polycyclic aromatic hydrocarbon (PAH) concentrations indicated low levels of pollution (EcoQS Excellent to Moderate).

New mayfly genera from the Middle Triassic of Poland and their evolutionary and paleogeographic implications (Ephemerida: Litophlebiidae, Vogesonymphidae).

Two new mayfly genera and species from the Triassic deposits of the Pałęgi area (southeast Poland) are described. This is the first description of aquatic insects from the Pałęgi locality. Triassolitophlebia palegica gen.

[Upper thoracic sympathectomy in treatment of upper limb ischaemia in distal lesions of the arterial bed].

Analysed herein was efficacy of 76 videothoracoscopic upper chest sympathectomies performed for upper limb ischaemia in a total of 61 patients. Of these, 15 patients were found to suffer bilateral lesions. The findings of clinical follow up and instrumental examinations (laser Doppler flowmetry, rheovasography, measuring transcranial oxygen tension in tissues) made it possible to draw a conclusion on efficacy of upper chest sympathectomy in distal lesions of the vascular bed of the upper extremities.

[Insects at the borderline between the Permian and the early triassic (Urzhum - Olenek age) and the problem of Permian-Triassic biodiversity crisis].

Distribution of 115 insect families is considered in 15 local assemblages of European Russia, Siberia, Australia and South Africa. The assemblage ages embrace the Urzhum stage of the Middle Permian, the Late Permian, and the transitional Permian-Triassic interval. The assemblages are ordered statistically using two criteria.

Chauliodites niedzwiedzkii sp. n. (Grylloblattida: Chaulioditidae) from Triassic sediments of Poland.

A new representative of the family Chaulioditidae (Insecta, Grylloblattida), Chauliodites niedzwiedzkii sp. n., is described from the Upper Olenekian-Lower Anisian sediments of Pałęgi in Holy Cross Mountains, Poland.