DYNAMIC PROCESSES IN THE FAUNA OF THE VERTEBRATA OF WESTERN SIBERIA AND THEIR CAUSES

The paper shows that, in the past centuries, the anthropogenic transformation of the landscape against the climatic changes in Western Siberia favoured migration of one species of vertebrata and reduced areas of others, but with an obvious positive balance. Over the past 400 years, only 12 species of vertebrata (8 species of mammals and 4 species of birds) became extinct in Tyumen region, whereas 57 new species emerged (13 species of mammals and 27 species of birds). It is stated that the high rates of dynamics of fauna in Tyumen region fall within the last 50 years, and the highest of them account for the last 15 years, which primarily corresponds to the current trend of strengthening of continentality of the regional climate (due to the change of zonal circulation of air masses to meridional circulation) against the global warming in the north of the Northern Hemisphere of Earth because of the change of the axis of its rotation to the plane of the ecliptic.Peer reviewe

Diagnostiikkakokonaisuus ominaisuuksista, joita käytetään myrkkyjen Microtus (Rodentia, Cricetidae) tunnistamiseen sympatraalisilla alueilla

Acta Theriologica SinicaPeer reviewe

Mouse phenotyping with near-infrared fluorescence lymphatic imaging

We demonstrate the ability to non-invasively and quantitatively image lymphatic architecture and contractile function using dynamic near-infrared (NIR) fluorescence imaging with injection of indocyanine green in normal and transgenic mice. Unlike normal mice, which showed well defined lymphatic drainage patterns and orthograde propagation of contraction waves, we observed tortuous and mispatterned lymphatic vessels and persistent retrograde lymph flow in mice with deficiency in Prox1, a transcription factor essential for lymphatic vascular development. NIR fluorescence imaging provides a method for quantifying lymphatic function for future studies designed to discern differences in lymphatic function in murine models of human lymphatic disease

INTRASPECIES PTEROMYS-TALLENNUSTEN (SCIURIDAE, MAMMALIA) TALVEN TURKIVÄRJEN VÄRITTÄMINEN MALLISSA

Peer reviewe

Diversity and sustainability of bird communities in the Irtysh River valley (the Tyumen Oblast, Russia)

This study investigates the avifauna of the Irtysh floodplain from June 1 to September 1, 2022–2023, revealing a rich diversity of 117 bird species across 14 groups. A notable discovery was the first documented nesting of the blackbird Turdus merula in the Uvat region. Additionally, the presence of 11 rare and declining bird species, as listed in the Red List of the Russian Federation and the Tyumen Oblast, was confirmed. The research delves into the ecological and faunal characteristics of bird communities within the key biotopes of the Uvat region, analyzing species composition, total bird population, diversity indices, and community stability. The findings indicated a direct correlation between these parameters and the heterogeneity of plant cover, spatial distribution, and food availability in critical habitats. Despite various anthropogenic activities like habitat fragmentation, tree and shrub cutting, burning, oil field operations, and recreational pursuits observed in the surveyed areas of the Irtysh floodplain, the overall stability of the bird community remained intact

Key factors of avian diversity and sustainability in the forest-steppe lakes of Western Siberia

The article examines the relationship between various parameters of 25 forest–steppe lakes in Western Siberia and the biological diversity of bird communities, based on bird censuses conducted from 2002 to 2023. It focuses on factors such as the lakes' physical characteristics, climate zone peculiarities, salinity levels, lake area, and the extent of overgrowth. A total of 180 bird species typical of the Western Siberia forest–steppe zone were recorded. The study found a statistically significant differentiation in bird communities across subzones, with the mean total bird abundance in the middle forest–steppe being 2.5 times greater than that in the northern forest–steppe. Correlation analysis revealed a significant inverse relationship between lake salinity levels and both species number and total bird abundance, as well as the species diversity and resilient sustainability indices of water bird communities. Conversely, a significant direct influence of salinity on the resistant sustainability index was observed. Additionally, a statistically significant, albeit weak, positive correlation was found between total bird abundance and the degree of lake overgrowth by aquatic and semi-aquatic vegetation. However, no clear correlation was established between the area of the lakes and the examined properties of bird communities

Review of rare bird species in the North Kazakhstan: update and additions to the regional avifauna list

The study details long-term observations conducted in the North Kazakhstan region from 2016 to 2024, focusing on bird species that were either previously unrecorded or rarely encountered. The research clarified data on the occurrence and seasonal activity of specific species by analyzing unpublished observations and recent publications. A notable outcome was the addition of six new species to the regional avifauna list, enhancing our understanding of local bird diversity. These findings underscore the dynamic nature of bird populations and the potential impacts of ecological and climatic changes. Key factors contributing to the registration of new species include climate change and habitat transformation. The results highlight the importance of ongoing biodiversity monitoring in light of global changes