scholarly journals Distribution and Diversity of Beauveria in Boreal Forests of Northern European Russia

2021 ◽  
Vol 9 (7) ◽  
pp. 1409
Author(s):  
Igor A. Kazartsev ◽  
Georgy R. Lednev

The distribution and genetic diversity of 91 of Beauveria isolates collected during a long-term survey in boreal forests of northern European Russia was studied. Based on morphological and sequence analysis of TEF and Bloc loci, three Beauveria spp. were identified: B. pseudobassiana, B. bassiana, and B. caledonica, with abundance of 81, 11, and 8%, respectively. Through multilocus sequencing, four haplotypes of B. bassiana and two haplotypes of B. caledonica were detected. Twelve haplotypes of B. pseudobassiana with non-random distribution were identified. Two haplotypes of B. pseudobassiana were the most abundant and widespread occurring across the whole study area, whereas others tended to be more specific to either the north or south of the study area, indicating the presence of different subpopulations. For further analysis of these putative subpopulations, southern and northern areas were separated along the boundary of the Köppen–Geiger climate zones (dfb and dfc), and the genetic structure was examined by analysis of molecular variance and spatial autocorrelation. Molecular evidence of intraspecific recombination of B. pseudobassiana and B. bassiana across northern European Russia area was indicated.

Check List ◽  
2015 ◽  
Vol 11 (5) ◽  
pp. 1727
Author(s):  
Ivan N. Bolotov ◽  
Irina A. Bochneva ◽  
Marina V. Podbolotskaya ◽  
Mikhail Yu. Gofarov ◽  
Vitaly M. Spitsyn

The Vinogradovsky District is located at the center of the Arkhangelsk Region, one of the largest federal subjects of Northern European Russia. Boreal spruce forests are the prevalent ecosystem type in this area, but large expanses of agricultural land and herb-grass meadows are also presented there. Based on the studies of 1,699 specimens collected from three meadow sites during period 2011–2013, we provide the first data on the butterfly fauna of the district, which include 56 species, belonging to 35 genera and 5 families. Our data reveal an intense northward expansion of many southern butterfly species to the Arkhangelsk Region, including migrants (Pontia edusa, Issoria lathonia, Vanessa atalanta and Vanessa cardui) and species that have established resident populations there (Pararge aegeria, Nymphalis xanthomelas, Aglais io, Lycaena dispar, Cupido alcetas). Quantitative data on species diversity and phenology of butterflies are reported, including analysis of structure of butterfly assemblages and their seasonal changes.


Author(s):  
N. L. Frolova ◽  
S. A. Agafonova ◽  
I. N. Krylenko ◽  
A. S. Zavadsky

Abstract. Heavy ice jams during spring floods are common on rivers in the northern European Russia. Climate changes of the last decades have caused significant changes in the ice regime of rivers. Continuous freezing periods, followed by sludge ice jams and late freezing at high water levels, occur with increasing frequency. Winter break-ups have become more frequent. The most recent catastrophic flood in the area under study took place in the spring of 2013. The probability of floods and ice jamming is evaluated; the duration and depth of inundation at various water levels are calculated with an assessment of the accompanying economic losses in the Northern Russia.


Author(s):  
Svtelana B. Selyanina ◽  
◽  
Marina V. Trufanova ◽  
Svtelana A. Zabelina ◽  
Mikhail V. Bogdanov ◽  
...  

Science ◽  
2013 ◽  
Vol 341 (6150) ◽  
pp. 1085-1089 ◽  
Author(s):  
H. D. Graven ◽  
R. F. Keeling ◽  
S. C. Piper ◽  
P. K. Patra ◽  
B. B. Stephens ◽  
...  

Seasonal variations of atmospheric carbon dioxide (CO2) in the Northern Hemisphere have increased since the 1950s, but sparse observations have prevented a clear assessment of the patterns of long-term change and the underlying mechanisms. We compare recent aircraft-based observations of CO2 above the North Pacific and Arctic Oceans to earlier data from 1958 to 1961 and find that the seasonal amplitude at altitudes of 3 to 6 km increased by 50% for 45° to 90°N but by less than 25% for 10° to 45°N. An increase of 30 to 60% in the seasonal exchange of CO2 by northern extratropical land ecosystems, focused on boreal forests, is implicated, substantially more than simulated by current land ecosystem models. The observations appear to signal large ecological changes in northern forests and a major shift in the global carbon cycle.


2007 ◽  
Vol 415 (1) ◽  
pp. 711-713 ◽  
Author(s):  
E. N. Borisenko ◽  
V. I. Velichkin ◽  
T. A. Vorob’eva ◽  
A. V. Evseev ◽  
A. Yu. Miroshnikov

Boreas ◽  
1999 ◽  
Vol 28 (1) ◽  
pp. 23-45 ◽  
Author(s):  
VALERY I. ASTAKHOV ◽  
JOHN INGE SVENDSEN ◽  
ALEXEI MATIOUCHKOV ◽  
JAN MANGERUD ◽  
OLGA MASLENIKOVA ◽  
...  

2010 ◽  
Vol 7 (3) ◽  
pp. 3189-3226 ◽  
Author(s):  
M. R. Oosterwoud ◽  
E. J. M. Temminghoff ◽  
S. E. A. T. M. van der Zee

Abstract. Potential mobilization and transport of Dissolved Organic Carbon (DOC) in subarctic river basins towards the oceans is enormous, because 23–48% of the worlds Soil Organic Carbon (SOC) is stored in northern regions. As climate changes, the amount and composition of DOC exported from these basins are expected to change. The transfer of organic carbon between soils and rivers results in fractionation of organic carbon compounds. The aim of this research is to determine the DOC concentrations, its fractions, i.e. humic (HA), fulvic (FA), and hydrophilic (HY) acids, and soil characteristics that influence the DOC sorptive properties of different soil types within a tundra and taiga catchment of Northern European Russia. DOC in taiga and tundra soil profiles (soil solution) consisted only of HY and FA, where HY became more abundant with increasing depth. Adsorption of DOC on mineral phases is the key geochemical process for release and removal of DOC from potentially soluble carbon pool. We found that adsorbed organic carbon may desorb easily and can release DOC quickly, without being dependent on mineralization and degradation. Although Extractable Organic Carbon (EOC) comprise only a small part of SOC, it is a significant buffering pool for DOC. We found that about 80–90% of released EOC was previously adsorbed. Fractionation of EOC is also influenced by the fact that predominantly HA and FA adsorbed to soil and therefore also are the main compounds released when desorbed. Flowpaths vary between taiga and tundra and through seasons, which likely affects DOC concentration found in streams. As climate changes, also flowpaths of water through soils may change, especially in tundra caused by thawing soils. Therefore, adsorptive properties of thawing soils exert a major control on DOC leaching to rivers. To better understand the process of DOC ad- and de-sorption in soils, process based soil chemical modelling, which could bring more insight in solution speciation, mineral solubility, and adsorption reactions, is appropriate.


2018 ◽  
Vol 20 (1) ◽  
pp. 273-283
Author(s):  
Aleksandra Kizhina ◽  
Lyudmila Uzenbaeva ◽  
Ekaterina Antonova ◽  
Vladimir Belkin ◽  
Viktor Ilyukha ◽  
...  

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