Spatial and compositional structure of European oak urban forests in Kyiv city, Ukraine

Matsala, Maksym; Bilous, Andrii; Feshchenko, Roman; Matiashuk, Raisa; Білоус, Світлана; Kovbasa, Yaroslav

doi:10.17221/173/2020-jfs

Cited by 6 publications

(5 citation statements)

References 36 publications

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“…Ecosystem services provided by urban trees are essential for mitigating city heat islands [3,4], water regulation [5][6][7], carbon sequestration [8,9], and sustaining social and aesthetical benefits for citizens [10][11][12]. The growing human population with the related lack of free land within the urban interface and climate change risks are reasons to manage urban green areas sustainably [13][14][15][16]. Efficient spatial planning and reliable data flows to capture ecosystem service provision need accurate and timely information on urban tree attributes [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…Efficient spatial planning and reliable data flows to capture ecosystem service provision need accurate and timely information on urban tree attributes [17][18][19]. Comprehensive tree inventory routines are thus of paramount importance and must be formalized as specific sampling protocols [15,20,21].…”

Section: Introductionmentioning

confidence: 99%

“…The DBH is the primary and the most useful biometric tree parameter [23]. This attribute is crucial to deriving growing stock [24], timber volume [25], economic value [10,26], and estimates of provided ecosystem services [5,6,15,27] for individual trees or urban green areas [28] (e.g., parks). Measured DBH values are preferred over indirect estimations [29] since these data are frequently used to approximate other tree parameters [30] (e.g., height [31]).…”

Section: Introductionmentioning

confidence: 99%

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Sampling Protocol for Measuring Mean Diameter at Breast Height of Forked Urban Trees

Bilous,

Zadorozhniuk,

Makarevych

et al. 2024

Forests

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The sustainable management of urban green areas requires clear and efficient protocols for measuring the biometric properties of tree vegetation. Specifically, operational in situ sampling solutions are essential to inventory forked (multi-stemmed) trees. This study aimed to assess the efficiency of two different sampling protocols for mean tree diameter at breast height (DBH) measurement of forked urban trees. The protocols were tested on a dataset of 76 forked trees, each having more than three stems and sampled in urban areas of Kyiv, Ukraine. First, we tested the efficiency of mean tree DBH estimations using measurements of randomly selected one, two, or three stems (random sampling, or RSM). Second, we examined different combinations of the thinnest, thickest, and average stems (identified visually) for each tree to estimate mean tree DBH (targeted sampling, or TSM). The distributions of mean tree DBH and root mean square errors (RMSE) were utilized to compare the utility of the two approaches. The TSM of three stems (the thinnest, thickest, and average) provided the highest accuracy of mean tree DBH estimation (RMSE% = 6.3% of the mean), compared to the RSM (RMSE% = 12.1%). The TSM of the four thickest stems demonstrated the overestimation of mean tree DBH for forked trees with five or more stems. Accurate mean tree DBH estimates can be derived with negligible systematic errors applying the RSM over a large number of measured trees. However, these estimates will not likely match the measurements from previous inventories due to random stem selection. We recommend using the TSM with measuring three specific stems as a balanced solution in terms of estimation accuracy, bias, and time costs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sampling Protocol for Measuring Mean Diameter at Breast Height of Forked Urban Trees

Bilous,

Zadorozhniuk,

Makarevych

et al. 2024

Forests

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“…Cell-associated enzymes of bacteria of the root system of Quercus spp. are an essential factor in the transformation of organic matter [ 45 ], affecting the cycles of C, N, and P, and significantly impact the functionality of forest ecosystems [ 46 , 47 , 48 , 49 ]. Endophytes show chemotaxis in relation to root exudates of host plants [ 50 , 51 , 52 , 53 ].…”

Section: Introductionmentioning

confidence: 99%

Antifungal Activity and Effect of Plant-Associated Bacteria on Phenolic Synthesis of Quercus robur L.

Білоус

Likhanov

Boroday

et al. 2023

Plants

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Europe’s forests, particularly in Ukraine, are highly vulnerable to climate change. The maintenance and improvement of forest health are high-priority issues, and various stakeholders have shown an interest in understanding and utilizing ecological interactions between trees and their associated microorganisms. Endophyte microbes can influence the health of trees either by directly interacting with the damaging agents or modulating host responses to infection. In the framework of this work, ten morphotypes of endophytic bacteria from the tissues of unripe acorns of Quercus robur L. were isolated. Based on the results of the sequenced 16S rRNA genes, four species of endophytic bacteria were identified: Bacillus amyloliquefaciens, Bacillus subtilis, Delftia acidovorans, and Lelliottia amnigena. Determining the activity of pectolytic enzymes showed that the isolates B. subtilis and B. amyloliquefaciens could not cause maceration of plant tissues. Screening for these isolates revealed their fungistatic effect against phytopathogenic micromycetes, namely Fusarium tricinctum, Botrytis cinerea, and Sclerotinia sclerotiorum. Inoculation of B. subtilis, B. amyloliquefaciens, and their complex in oak leaves, in contrast to phytopathogenic bacteria, contributed to the complete restoration of the epidermis at the sites of damage. The phytopathogenic bacteria Pectobacterium and Pseudomonas caused a 2.0 and 2.2 times increase in polyphenol concentration in the plants, respectively, while the ratio of antioxidant activity to total phenolic content decreased. Inoculation of Bacillus amyloliquefaciens and Bacillus subtilis isolates into oak leaf tissue were accompanied by a decrease in the total pool of phenolic compounds. The ratio of antioxidant activity to total phenolic content increased. This indicates a qualitative improvement in the overall balance of the oak leaf antioxidant system induced by potential PGPB. Thus, endophytic bacteria of the genus Bacillus isolated from the internal tissues of unripe oak acorns have the ability of growth biocontrol and spread of phytopathogens, indicating their promise for use as biopesticides.

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“…Socioeconomic, environmental, and conservation factors influence the diversity and composition of plant communities in urban parks (Figueroa et al, 2018). Anthropogenic impacts alter the structural development of urban forests, affecting both positively through the formation of gaps, the appearance of deadwood, and the formation of ecosystem complexity, and negatively through the shifts in composition and successional trajectories (Alasmary et al, 2020;Matsala et al, 2021). Plants are an important component of landscape design (Maltsev & Maltseva, 2018;Goncharenko & Yatsenko, 2020).…”

Section: Introductionmentioning

confidence: 99%

Phytoindication assessment of the effect of reconstruction on the light regime of an urban park

et al. 2021

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The ecological restoration of urban parks is used to increase their recreational attractiveness, improve air quality, mitigate urban heat island effects, improve stormwater infiltration, and provide other social and environmental benefits. The dynamics of plant communities after urban forest restoration requires investigation. The study assessed the impact of urban park reconstruction on the state of grass cover, phytoindication of changes in light regime caused by park reconstruction and found out the dependence of reliability of phytoindication assessment on the number of species in the relevant area. The study was conducted in the recreational area of the Botanical Garden of the Oles Honchar Dnipro National University (Ukraine). A tree plantation was created after the Second World War in the location of a natural oak forest. In 2019, a 2.8 ha area of the park was reconstructed. The samples were taken within polygons, two of which were placed in the reconstruction area and two of which were placed in a similar section of the park where no reconstruction was performed. During the reconstruction process, walkways were rebuilt, shrubs were removed, old, damaged trees were removed, and tree crowns were trimmed. Juvenile trees were planted in place of the removed old trees. Old outbuildings, which greatly impaired the aesthetic perception of the park, were also removed. Transport and construction machinery was involved in the reconstruction. A total of 65 plant species were found within the studied polygons. The number of herbaceous species in the park area after reconstruction was higher than without reconstruction. The crown closure in the reconstructed area was significantly lower than that in the untreated conditions. The phytoindication assessment showed that the light regime varies from the conditions suitable for the scyophytes (plants of typical foliage forests) to the conditions suitable for the sub-heliophytes (plants of light forests and shrubberies, or high herbaceous communities; lower layers are in the shade). The light regime in the park area after reconstruction was statistically significantly different from the regime in the untreated park area. The lighting regime after the reconstruction was favourable to sub-heliophytes, and without reconstruction the regime favoured hemi-scyophytes. Tree canopy crown closure negatively correlated with grass height and herbaceous layer projective cover. The tree canopy crown closure, grass height, and herbaceous layer projective cover were able to explain 86% of the phytoindication assessment of the lighting regime variation. These parameters negatively affected the light regime. The prospect of further research is to investigate the dependence of indicative reliability of the assessment of other environmental factors with the help of phytoindication depending on the number of species. In addition to the indication of traditional ecological factors it is of particular interest to clarify the aspect of the dynamics of hemeroby indicators as a result of park reconstruction.

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Spatial and compositional structure of European oak urban forests in Kyiv city, Ukraine

Cited by 6 publications

References 36 publications

Sampling Protocol for Measuring Mean Diameter at Breast Height of Forked Urban Trees

Sampling Protocol for Measuring Mean Diameter at Breast Height of Forked Urban Trees

Antifungal Activity and Effect of Plant-Associated Bacteria on Phenolic Synthesis of Quercus robur L.

Phytoindication assessment of the effect of reconstruction on the light regime of an urban park

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