The Quantitative Features of the Phytoplankton Community in the Southwestern Kara Sea in the Summer of 2015

This paper presents results from a study of phytoplankton communities that was performed in 2015 at 213 stations in the southwestern part of the Kara Sea. The values of primary production at most stations exceeded the estimates obtained in 1993 by several times. A continued increase in productivity indices and no outbreaks of phytoplankton were consistent with long-term satellite monitoring data. At the same time, grouping of stations showed a highly mosaic structure of the spatial distribution of phytoplankton and a significant range of variation of most of the studied parameters.     

The role of birds in the maintenance of tick-borne infections in the Tomsk anthropurgic foci

The role of birds in the focus of tick-borne infections was studied from 2006 to 2011. The frequency index of ticks carried by ground dwelling birds is about 49.7%. The index of their abundance is 3.8. The larvae of ticks have been found on birds in 43.8% of cases. Nymphs and adult ticks have been found in 39.9 and 16.3%, respectively. It was revealed that Ixodex pavlovskyi was transferred and dominated in the urban microfoci because of its ornithophily. The markers of infectious agents have been recorded in 42 of 60 bird species under study.