Cryophilic algae thrive in liquid water within snow and ice in alpine and polar regions worldwide. Blooms of these algae lower albedo (reflection of sunlight), thereby altering melting patterns (Kohshima, Seko & Yoshimura, 1993; Lutz et al., 2014; Thomas & Duval, 1995). Here metagenomic DNA analysis and satellite imaging were used to investigate red snow in Franz Josef Land in the Russian Arcti...

Contributions The following table indicates the major contributions of authors to the original articles or manuscripts. Behaviour, dynamics and ecological impact of small mustelids This thesis is a summary of the following papers, which are referred to by their roman numerals. Indirect effects of least weasel presence on field vole behaviour and demography: a field experiment. Annales Zoologici...

Orientation tests were conducted with snow buntings (Plectrophenax nivalis) exposed to artificially manipulated magnetic fields, during both spring and autumn migration. Experiments were run under clear sunset skies and under simulated complete overcast. The birds closely followed experimental shifts of the magnetic fields during both seasons regardless of whether they had access to celestial c...

Galanthus rizehensis Stern (Amaryllidaceae) was collected from Maçka, Trabzon during flowering and fruiting seasons. Quality control studies and quantitative determination of lycorine were carried out on the prepared specimens. In this respect, assays for humidity, total ash, sulphated ash, hydrochloric acid-insoluble ash were performed on each drug specimen. The total alkaloidal content of G. ...

Predation by small mustelids is widely considered to be the most likely mechanism to maintain multiannual fl uctuations of vole populations in Fennoscandia. Apart from the direct effect of predation, small mustelids have been suggested to have indirect effects on vole population dynamics. We studied in a fi eld experiment the indirect effects of the presence of the least weasel (Mustela nivalis...

In cyclic vole populations the body size of voles tends to vary with population density, voles being smaller in the decline and low density phases than in the peak phase of the cycle. We have studied this ‘Chitty effect ̓ using fi eld measurements of vole (Microtus agrestis, M. rossiaemeridionalis) body size and predator densities, and laboratory experiments on the minimum passable hole size for...

To optimize conditions for micropropagating Galanthus transcaucasicus Fomin, the effect of explant type, different concentrations of sucrose, type and different concentrations of auxin were examined on bulblet production. For the induction of bulblets, three types of bulb scales were usesd as explants. A two-step sterilization procedure was applied. Assessments were made after incubation for 20...