Fluctuating Asymmetry as a Measure of Stress in Natural Populations of Woody Plants: Influence of Ecological and Geographical Factors on Developmental Stability

Шадрина, Е. Г.; Soldatova, Victoria; Turmukhametova, N V

doi:10.3390/sym15030700

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…In urban conditions in individuals of different ages B. pendula shows an ambiguous reaction to a complex of urban factors, which leads to the activation of growth processes. This phenomenon can be explained both by elevated temperatures and increased carbon dioxide content in the air, and by the use of pollutants by trees as additional elements of mineral nutrition [10,22,23].…”

Section: Resultsmentioning

confidence: 99%

“…Tree plantings are an important object of urban ecosystem formation as well as a valuable indicator of the state of the environment. Researchers more often use various morphometric indicators of vegetative and generative organs of plants as bioindicative signs, less oftenchanges in the rhythms of their seasonal development [3][4][5][6][7][8][9][10]. In the works of the populationontogenetic direction [1,11,12] it is shown that the heterogeneity of the rhythms of seasonal development of individuals of one cenopopulation can be a mechanism of adaptation to changes in environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Use of morphometric and phenological indicators of Betula pendula Roth for environmental health assessment

Turmukhametova,

Turmukhametov

2023

E3S Web of Conf.

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The article presents the results of long-term biomonitoring of the quality of the environmental of the city of Yoshkar-Ola (Russia) based on the analysis of morphological and phenological indicators of Betula pendula Roth. The authors studied Betula pendula trees at various stages of ontogenesis in the generative period. The authors also found out the heterogeneity of ontogenetic groups of trees by morphological and phenological characteristics in different ecotopes of the city, differing in the degree of pollution by industrial and transport emissions, using principal component analysis A decrease in the morphometric parameters of the Betula pendula leaf blade and leaf damage by phyllophagous insects do not always indicate a deterioration in the quality of the habitat. Moderate doses of atmospheric toxicants can accelerate the growth of B. pendula leaves. However, in conditions of urban pollution, the stability of B. pendula development is disrupted, which is manifested in an increase in the leaf asymmetry index. There are the most informative indicators of the state of the environment in individuals B. pendula: morphometric – an indicator of fluctuating asymmetry of leaves, phenological – the timing and duration of phenophases. The young generative trees of B. pendula are most sensitive to habitat pollution.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of morphometric and phenological indicators of Betula pendula Roth for environmental health assessment

Turmukhametova,

Turmukhametov

2023

E3S Web of Conf.

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Effects of ash dieback on leaf physiology and leaf morphology of Fraxinus excelsior L.

Buchner,

Eisen,

Jochner-Oette

2024

Trees

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Key message Ash dieback causes alterations in leaf physiology and morphology, particularly affecting the specific leaf area, which can be used to discriminate between different degrees of damage. Abstract Since the introduction of the invasive fungal pathogen Hymenoscyphus fraxineus in Europe, the European common ash (Fraxinus excelsior L.) has been threatened by ash dieback. An infection leads, for example, to typical symptoms of dying shoots, but changes of leaf physiology and morphology are still largely unexplored. Therefore, five physiological and morphological traits, chlorophyll content, chlorophyll fluorescence, specific leaf area, leaf thickness, and fluctuating asymmetry, were investigated in four different study sites in southern Germany regarding possible changes due to ash dieback and their relationship to different degrees of damage. Both higher and lower levels of chlorophyll with increasing damage due to ash dieback were observed. Chlorophyll fluorescence and fluctuating asymmetry proved to be less suitable indicators of damage. Leaf thickness showed the tendency (however not significant) of an increase in more severely damaged trees. The specific leaf area was identified as a suitable indicator of the damage severity, with significant smaller values in less healthy trees. Therefore, ash dieback can also result in notable alterations in leaf physiology and morphology.

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Phenological multivariance of Betula pendula Roth in an anthropogenically transformed environment

Turmukhametova,

Turmukhametov

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents the results of long-term biomonitoring based on the phenology of the arboreal species Betula pendula of the city of Yoshkar-Ola, Russia. The phenological multivariance of B. pendula was studied for the first time at different stages of the ontogenesis of the generative period, in the gradient of atmospheric air pollution by industrial and automotive toxicants. The rhythm of seasonal development of B. pendula depends on both individual and age characteristics, as well as on the influence of conditions of a specific urban microclimate and environmental pollution. Middle-aged generative individuals of B. pendula are characterized by earlier periods of the onset of phenophases, rapid leaf unfolding, prolonged flowering, yellowing of leaves and, in general, the growing season, compared with young and old generative trees. The asynchrony of seasonal development is characteristic mainly for trees located in the zone of medium pollution. Under conditions of a specific microclimate and air pollution, heterogeneity within ontogenetic groups B. pendula increases. The adaptation of B. pendula individuals to adverse weather factors and urban conditions is determined by the diversity of phenorhythmogroups in the generative period of ontogenesis.

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Fluctuating Asymmetry as a Measure of Stress in Natural Populations of Woody Plants: Influence of Ecological and Geographical Factors on Developmental Stability

Cited by 5 publications

References 46 publications

Use of morphometric and phenological indicators of Betula pendula Roth for environmental health assessment

Use of morphometric and phenological indicators of Betula pendula Roth for environmental health assessment

Effects of ash dieback on leaf physiology and leaf morphology of Fraxinus excelsior L.

Phenological multivariance of Betula pendula Roth in an anthropogenically transformed environment

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