scholarly journals Introduction species of the genus Eupatorium L. in the southern taiga subzone of Western Siberia

2018 ◽  
Vol 4 (3) ◽  
pp. 121
Author(s):  
N. V. Kirsanova
Author(s):  

A detailed analysis of river flow long-term changes in the Southern taiga subzone of Western Siberia has been carried out with the Chaya River basin as an example. Causal statistical analysis of changes in groundwater levels, bog water level, air temperature and atmospheric precipitation has been performed. The conducted studies revealed a statistically significant trend in the increase of surface runoff in the winter low flow of the Chaya River and its large tributaries (the Iksa and the Parbig), as well as the underground runoff component for virtually the entire year. An ambiguous regularity has been observed in the change of the level regime of rivers. The main reason for the observed changes in the water regime of the said territory is the redistribution of atmospheric moisture and shifting of the boundaries of hydrological seasons.


2020 ◽  
Vol 10 (5) ◽  
pp. 186-191
Author(s):  
T.N. Belaeva ◽  
A.N. Butenkova

The authors present the findings of a leaf blade anatomy study for the rare relict Siberian flora species Mertensia sibirica (L.) G. Don fil. (Boraginaceae). They collected samples for the study from natural habitats in Chita Region (Chikoy Range) and then planted them in the introduction area of the Siberian Botanic Garden (Tomsk) located in the southern taiga subzone of Western Siberia. The parameters of the photosynthetic and stomatal complex of M. sibirica were studied for the first time. It was found out that the rosette and cauline leaves of the species under study are hypostomatous, with an anomocytic stomatal complex. The epidermis is single-layer. On average, the adaxial epidermis has larger cells vs. abaxial epidermis. The leaf mesophyll is 242.90–369.90 µm thick, dorsiventral. The adaxial side of the leaf comprises glandular trichomes surrounded with pronounced rosettes of cells in the base part. The cauline leaf significantly differs from the rosette leaf in finer cells of its adaxial and abaxial epidermis (and, consequently, their larger number per 1 mm2), while the adaxial epidermal cells are thicker, and in a larger number of stomata in the abaxial epidermis. The palisade mesophyll in the cauline leaf is more developed vs. the rosette leaf, while the cells are longer and the palisade/spongy mesophyll ratio is higher. The rosette leaves have a more developed system of vascular tissues vs. cauline ones, as they play the main role in providing plants with water and nutrients. The contribution of the cauline leaf palisade mesophyll to the photosynthetic potential of M. sibirica is higher vs. that of the rosette leaf (the ratio between palisade and spongy mesophyll is 0.45 vs. 0.36, respectively), which characterizes the cauline leaf as more heliophytic. The stomatal complex and mesophyll parameters under study are primarily characterized by low variance. As for dermal tissue parameters, medium variance is typical of the thickness and size of the abaxial and adaxial epidermal cells. Coefficients of variation for the cells of the upper mesophyll layer (CV=31.2–41.6%) and the number of stomata on the lower epidermis of the rosette leaf (CV=21.5%) demonstrate medium and high variance. A very high coefficient of variation (116.2–174.0) is registered for the adaxial epidermis parameter characterizing the density of trichomes per 1 mm2. The study results were used to develop an optimal M. sibirica cultivation regime under conditions of introduction in the southern taiga subzone of Western Siberia.


2015 ◽  
Vol 48 (8) ◽  
pp. 841-851 ◽  
Author(s):  
A. F. Sabrekov ◽  
M. V. Glagolev ◽  
I. A. Fastovets ◽  
B. A. Smolentsev ◽  
D. V. Il’yasov ◽  
...  

2021 ◽  
Vol 76 (1) ◽  
pp. 1-10
Author(s):  
L. G. Bogatyrev ◽  
A. I. Benediktova ◽  
M. M. Karpukhin ◽  
V. M. Telesnina ◽  
N. I. Zhilin ◽  
...  

2022 ◽  
Vol 49 (4) ◽  
pp. 91-99
Author(s):  
N. P. Matveeva ◽  
E. A. Tretyakov ◽  
A. S. Zelenkov

We describe 15 burials at the Vodennikovo-1 group of mounds in the northern Kurgan Region, on the Middle Iset River, relevant to migration processes during the Early Middle Ages. On the basis of numerous parallels from contemporaneous sites in the Urals and Western Siberia, the cemetery is dated to the late 7th and 8th centuries. Most of single and collective burials are inhumations in rectangular pits with a northwestern orientation, with vessels, decorated by carved or pricked designs, placed near the heads. These features, typical of the Early Medieval Bakalskaya culture of the Tobol and Ishim basins, are also observed at the Pereyma and Ust-Suerskoye-1 cemeteries in the same area. However, there are innovations such as inlet burials, those in blocks of solid wood and plank coffi ns, western orientation of the deceased, and placing vessels next to the burial pits. These features attest to a different tradition, evidenced by cemeteries of the Potchevash culture in the Tobol and Ishim basins (Okunevo III, Likhacheva, and Vikulovskoye). Also, Potchevash and Bakalskaya vessels co-occur at Vodennikovo-1, and some of them (jugs with comb and grooved designs) are typologically syncretic. To date, this is the westernmost cemetery of the Potchevash culture, suggestive of a migration of part of the southern taiga population from the Ishim and Tobol area to the Urals.


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