scholarly journals Fluctuating asymmetry of the lamina of Betula pendula Roth in the context of different cities and industrial load

2021 ◽  
Vol 839 (5) ◽  
pp. 052011
Author(s):  
N V Turmukhametova ◽  
E G Shadrina ◽  
V Yu Soldatova ◽  
E N Ivantsova
Keyword(s):  
Fluctuating Asymmetry ◽  
Betula Pendula ◽  
Betula Pendula Roth

scholarly journals Fluctuating Asymmetry in Morphological Characteristics of Betula Pendula Roth Leaf under Conditions of Urban Ecosystems: Evaluation of the Multi-Factor Negative Impact

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1317 ◽  
Author(s):  
Elena Shadrina ◽  
Nina Turmukhametova ◽  
Victoria Soldatova ◽  
Yakov Vol'pert ◽  
Irina Korotchenko ◽  
...  
Keyword(s):  
Fluctuating Asymmetry ◽  
Betula Pendula ◽  
Negative Impact ◽  
Morphological Characteristics ◽  
Developmental Stability ◽  
Anthropogenic Load ◽  
Traffic Load ◽  
Anthropogenic Factors ◽  
Betula Pendula Roth ◽  
The Impact

The fluctuating asymmetry (FA) in Betula pendula Roth was estimated as an integrated measure of five morphometric characteristics of a lamina. Samples were collected in seven cities that differ both in climatic conditions, moderately to sharply continental. In total, 33 ecotopes were distinguished with various level of anthropogenic load. The statistical data processing involved correlation, one-way and factorial ANOVA, regression analyses, and principal component analysis (PCA). The impact of 25 climatic and anthropogenic factors on the FA value was considered. In most urban ecotopes, the integrated fluctuating asymmetry (IFA) value was higher than in natural biotopes of the same region. No significant inter-annual differences in IFA values were found. FA dependence on traffic load is noted to be statistically significant. The covariation analysis of IFA, climatic, and anthropogenic variables in various urban ecotopes revealed the impact of three groups of factors that together explain 93% of the variance in environmental parameters. The complex analysis clearly arranged the studied ecotopes by pollution gradient and climatic patterns. The primary effect of the total anthropogenic load on the developmental stability of B. pendula results in an IFA increase. IFA can play a key role in bioindication assessment of environmental quality. The climatic factors have no significant effect on the developmental stability of B. pendula in urban conditions.

scholarly journals A comparative evaluation of the fluctuating asymmetry of the leaf blade Betula pendula Roth for different methods of plant material fixation

2020 ◽  
Vol 9 (4) ◽  
pp. 58-65
Author(s):  
Tatyana Valerievna Zhuikova ◽  
Anastasia Sergeevna Popova ◽  
Eleonora Vasilievna Meling
Keyword(s):  
Heavy Metals ◽  
Soil Contamination ◽  
Fluctuating Asymmetry ◽  
Plant Material ◽  
Betula Pendula ◽  
Natural Increase ◽  
Second Order ◽  
Alcohol Solution ◽  
Middle Urals ◽  
Betula Pendula Roth

The influence of plant material fixation methods on the index of fluctuating asymmetry of Betula pendula Roth leaves is determined. The methods used were herbarization under pressure and leaves fixation in a solution of ethyl alcohol (45%). Biological material was collected in natural phytocenoses of the Pritalskaya zone of the Middle Urals and in technogenically formed territories, including soil contamination with heavy metals. The FA level of Betula pendula Roth leaf blades obtained on freshly harvested material increases in the gradient of toxic load and reflects a natural increase in soil contamination with heavy metals (Zn, Cu, Pb, Cd, etc.). The smallest deviation from the actual FA values obtained on freshly harvested material is given by a method of herbarization of leaves. The correlation coefficients are 0,940,99. Plant material fixation in an alcohol solution leads to more than 10-fold deviation of FA values from the real ones. The correlation between the studied morphological parameters of fresh and alcoholic leaf blades is 0,170,70. The signs distance between the bases of the first and second veins of the second order from the base of the leaf and angle between the main vein and the second vein of the second order from the base of the leaf are more distorted. Correction coefficients are proposed that allow to level out the differences in the FA level between the results obtained on freshly collected material and recorded by different methods. For the herbarization method, regardless of where the plant material is collected, the correction factor to be entered for the FA values of the fixed leaf blades is () 0,0004. For the method of leaves fixation in an alcohol solution, the coefficient value is () 0,00075 for material collected in undisturbed communities, and (+) 0,0045 for technogenically disturbed communities.

scholarly journals Fluctuating asymmetry of silver birch Betula pendula Roth in industrial and recreational zones of the South-West of St. Petersburg

2020 ◽  
Vol 215 ◽  
pp. 03002
Author(s):  
Grigorii Kozlov ◽  
Mikhail Pushkarev ◽  
Anastasia Trubnikova ◽  
Anastasia Goreva ◽  
Miroslava Ivanova ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Fluctuating Asymmetry ◽  
Betula Pendula ◽  
Silver Birch ◽  
The South ◽  
Betula Pendula Roth ◽  
South West ◽  
Industrial Zones

The paper contains information on the fluctuating asymmetry of the silver birch in the recreational and industrial zones of the South-West of St. Petersburg. It is proposed to use the fluctuating asymmetry of silver birch to substantiate the choice of locations for isolating promising strains - destructors of toxic organic pollutants.

Phytoindication of the environmental conditions by the degree of leaves damage of Betula pendula Roth

2019 ◽  
Vol 24 (2) ◽  
pp. 66-74
Author(s):  
Kristina Krupey ◽  
◽  
Katerina Obruch ◽  
A. Mihailichenko ◽  
◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Betula Pendula ◽  
Betula Pendula Roth
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