The results of a study of the vegetation in the water bodies of the Kondinskie Lakes Natural Park are discussed. It is shown that edificators of aggregations are Equisetum fluviatile, Sparganium emersum, Potamogeton gramineus, Eleocharis palustris, Carex aquatilis, Persicaria amphibia, Nuphar pumila, N. lutea, Nymphaea candida. The vegetation has been classified to 9 formations in 2 classes: helophyte and pleistophyte formations. No hydatophyte formations have been found due to low water transparency. A study of the hypercoenotic vegetation units has revealed 6 types of microcombinations and 8 types of mesocombinations of phytocoenoses. According to the evaluation of the trophic and saprobic status by phytoindication, the Arantur Lake belongs to the meso-oligotrophic, beta-meso-oligosaprobic type, the Rangetur Lake and the Yeniya River belong to the oligo-mesotrophic, beta-meso-oligosaprobic type, the Pontur Lake having the highest trophicity and saprobity belongs to the oligo-mesotrophic, oligo-beta-mesosaprobic type.

The paper discusses the main carriers of tularemia infection, emphasizing the water voles contribution. It is shown that parasitic arthropods are long keepers and carriers. A bacteriological survey of the rivers Ob and Irtysh confluence has been performed. In 2015 there was a slow tularemia epizootic in the floodplain and bordering habitats affecting the small mammals. It could not lead to an epidemic.

In 2015 in the south of the West Siberian Plain (54º31′ N, 74º24′ E), for the first time in this region the Chaetophora incrassata (Hudson) Hazen ( Chaetophoraceae, Chaetophorales, Chlorophyta) was found. Water composition in the aquatic ecotope is sodium bicarbonate, total salt content being 1,15 g/dm³, total hardness 6,97 meq/dm³, рН 7,7. The water environment is typical of the beta-mesosaprobic, eutrophic-mesotrophic levels. The species C. incrassatа is a part of a synusia of macroscopic algae together with Cladophora glomerata (L.) Kütz., Vaucheria dichotoma (L.) Martius. In the lower layer of the plant aggregation there are flowering hydrophytes Hippuris vulgaris L. , Ceratophyllum demersum L. , Myriophyllum spicatum L. Dominating in the upper layer are Phragmites australis (Cav.) Trin. ex Steudel and Typha angustifolia L. In the West Siberian Plain, C. incrassatа is a natural migrant represented by a small population in an unstable plant aggregation.

The paper presents the new and existing data on the fungi sprouting in the vicinity of Khanty-Mansiysk. The samples have been taken in the Samarovsky Chugas natural park. The paper covers the characteristic of some interesting mushrooms spotted in the surveyed area. Edibility is considered as one of the fungi characteristics. The major milestones in the history of the fungi flora studies in the Khanty-Mansiysk district, as well as the need for further field work are presented.

The paper considers the reproductive characteristics of the moor frog in Surgut area: its reproductive phenology, fertility, reproductive organ and clutch abnormalities have been covered. Significant differences in the fertility of the frogs dwelling in different city areas have been found.

The subject of research is the grayling fish (Thymallidae), inhabiting the Kazim River basin, the right tributary of the Lower Ob. Till now the data are available only about the graylings inhabiting in the left tributaries of the Lower Ob basin. The morphological characters of the grayling dwelling the right tributary are presented for the first time. The meristic properties of the graylings inhabiting the Polar Urals rivers and the adjacent territories belonging to the Lower Ob basin have been found to be similar those of the Kazim River graylings, but they differ from the graylings inhabiting the Upper Ob.

Among many contemporary environmental urban issues, the stray dog presence and behavior patterns deserve special attention. The study of stray dogs in Surgut was carried out in 2014-2015. 1 515 homeless and stray dogs were identified. The size and density of the dog urban population in the surveyed area has been closely studied; the dominating behavioral is high social adaptation to humans.

Based on the data of winter route census conducted at Yugansky Nature Reserve in 1988-2016 the author has analyzed the reindeer population evolution in different habitats. The paper describes the causes of reindeer's population decrease and offers a forecast of reindeer’s future population size.

The basic morphological, physiological and phycho-physiological properties of the genetic pool of the 1-3 generation newsettlers in the North has been studied.

The main performance indicators of the circulatory system in the ingenious children of middle school age have been studied. The gender differences found point to the weakening of the circulatory system performance and low health reserves, more in the boys than in the girls.

The cardiorespiratory system in 9-11 years old ski racers and children not practicing sports has been studied. It has been found that the young athletes have more developed respiratory muscles, and its mac performance is higher. The higher hemodynamic rates in the ski racers point to less efficient heart operation, and reduced adaptation.

The paper presents the immunity assessment and complete blood count results in 37 athletes of Khanty-Mansiysk taken during the short daylight season. The complete blood count and immunoglobulin A, M, G values have been studied, and the leukocytic intoxication index (LII) has been estimated. The control group consists of students of a northern medical school who exercise 2-4 hours per week. The study has revealed a high LII value in both groups, while individual values of blood parameters studied has not exceeded the physiological limits.

The correlation between stress coping methods and spectral analysis results of the heart rate variability in students, Medical Faculty, Khanty-Mansiysk Medical University, has been studied. It has been found that he young males and females control stress differently: an increase in sympathetic activity and the contribution of the heart rate control loop correlates to an emotionally-focused stress coping in males, while in females it correlates to avoidance-based coping, and its subtypes. The study has shown that as parasympathetic effects increase the use of undesirable stress coping approaches decreases.

The asymmetry of the average alpha spectral power in EEG F3 and F4 signals, and the relationship between the relative spectral power and the heart rate variability have been studied. The cardiac rate modulation of is characterized by the relative spectral power in the range of very low, low and high frequencies. The study has covers 134 top athletes, 18-24 years old, and 20 medical Academy students, 18-20 years old. It has been found that the heterogeneity of EEG frontal alpha asymmetry is associated with the heart rate modulation type. The dominance of the left hemisphere alpha signal is associated with the dominance of the power spectrum in the low frequency range of the heart rate variability. This relationship is more pronounced in athletes with cardiovascular type of heart rate modulation.

The study has revealed that some thyroid status features such as the content of TSH, thyroid hormones and their free fractions of thyroglobulin in most of the surveyed Khanty-Mansi Autonomous Okrug - Ugra residents do not exceed the reference values for the age category. However, the indigenous people have shown a significant shift in the level iodothyronines towards the free fractions as compared to the non-indigenous population. The T4/T3 indicator is higher in the non-indigenous population compared to the aboriginal group. The T3/T3 St. and St. T4./T3 St. ratios in the indigenous population is lower than that of the non-indigenous population. It is noteworthy that the ratio of T4St./TSH concentration is significantly higher in the group of Khanty than that of non-indigenous population.

The paper presents the psycho-physiological and psychological studies of the KhMAO - Ugra firefighters engaged in a training program at the EMERCOM training center in Surgut. The professional reliance indicators in persons with different nervous system excitation inhibition patterns based on regular visual-motor reactions have been estimated.

The physical activity (PA) intensity over 7 days and its duration has been studied in female students, University of Surgut ( n = 49, age: 21 ± 0,7 years). The PA has been divided into moderate, high intensity, and leisure types, and into 5 domains: work, transportation, home errands, leisure and PA while sitting. The motivation for PA has been measured. According to the self-determination theory the PA structure, the motivation components and their relations have been identified, and compared to the results obtained for students in Latvia and Canada.

The effect of walk at 2-7 km/h on the students’ cardiorespiratory system parameters ( n = 25, age 22,1 ± 2,6 years, 12 males, and 13 females) has been studied. Walking at each speed has lasted for 5 minutes. The oxygen consumption (VO₂, ml/min), lung ventilation (Ve, l/min), oxygen concentration in the exhaled air (FeO₂, %) and heart rate (beats/min) have been measured with the Fitmate Pro (Cosmed) metabolimeter and a heart rate monitor (HR). Depending heart rate ( F (5, 142) = 42,912, p = 0,0000), oxygen consumption ( F (5, 144) = 48,231, p = 0,0000) and ventilation ( F (5, 144) = 70,123, p = 0,0000) on the speed of walking on a treadmill in a Khanty-Mansi Autonomous Okrug - Ugra have been identified. The preferred (comfortable) walking speed for 75 % of the participants was 4 km/h with a step rate of 92-125/min and 25 % - 5 km/h with a frequency step of 100-105/min.

The paper presents the efficiency and advantages of a clinical physical rehabilitation programs comprising manual therapy compared to a similar program performed at home. It has been found that a clinically justified approach to recovery results in better effect on the knee joint biomechanics.

The study has estimated the physical development of normosthenic 9-years old boys who lead a sedentary lifestyle and have begun taekwondo classes. The initial level of physical development in the normosthenic 9-years old boys prior to the taekwondo training does not differ from that of normosthenic 9-years old boys leading a sedentary lifestyle. The data obtained over 3 months of observations indicate that the level of physical development in normosthenic 9-years old boys engaging in taekwondo is higher than that of normosthenic 9-years old boys leading a sedentary lifestyle.

The effect of treadmill walks at 2-7 km/h on the students’ cardiorespiratory system properties ( n = 25, 12 males and 13 females, age 22,1 ± 2,6 years) has been studied. It is shown that Ve-index at different walking speeds on the treadmill closely correlates to VO₂ ( r = 0,98; p = 0,0000) than to the heart rate ( r = 0,5; p = 0,0000). We can recommend the VO₂ vs (Ve) relation as an energy consumption indicator in PE classes.

A two-week test-retest has been applied to Surgut University students ( n = 29, age: 21 ± 0,7 years) to estimate the reliability of the International Physical Activity Questionnaire (IPAQ-RU) through registering the physical activity rate (PA) for 7 days and time (hours and minutes) spent on moderate, high intensity and leisure PA divided into 5 domains: work, transportation, work at home, leisure, and sitting. It has been found that the IPAQ-RU reliability is 0.73 (Spearman), so the survey is suitable to study the PA in sample student respondents.

The paper presents the results of introducing a training program for mid-aged women, Khanty-Mansiysk residents, which is regarded as a northern area. The program accounts for preferred fitness styles, and efficiently combines various exercises for synergy.

Academic billiards classes for university students with health problems contribute to raising the general level of neurohumoral regulation, heart rate control metabolism, increase the amount of people with balanced sympathetic and parasympathetic activities in the normal state of their regulatory systems, decrease the total activity of cerebral hemispheres, reduce the level of psychic an emotional stress. Young males also report the increase in activity and mood improvements. Females feature more persons with satisfactory adaptation, and health improvements.