Adaptation of functional traits and their plasticity of three ornamental trees growing in urban environment

Ilyas, Muhammad; Liu, Yuan-Yuan; Shah, Sakhawat; Ali, Ashfaq; Khan, Aamir Hamid; Zaman, Fawad; Zhang, Yucui; Saud, Shah; Adnan, Muhammad; Ahmed, Nazeer; Ali, Beenish; Fahad, Shah; Wang, Yong Jian

doi:10.1016/j.scienta.2021.110248

Cited by 18 publications

(7 citation statements)

References 45 publications

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“…Mitigation of the high temperatures is obtained by the transpiration of plants, and the efficiency depends on water availability. Ornamental shrubs are able to maintain environmental quality and offer pleasant landscape effects, even if urbanisation, with its environmental changes, exerts negative effects on plants, which mainly affect the characteristics of the leaves [ 20 ]. At the same time, the variations that, due to the stressful effects of urbanisation, are observed in plants, such as leaf thickness, unit leaf area, specific leaf area, etc., can be used as indicators of the urban environment quality [ 20 ].…”

Section: Ornamental Shrubby Plants In the Urban Environmentmentioning

confidence: 99%

New Strategies to Increase the Abiotic Stress Tolerance in Woody Ornamental Plants in Mediterranean Climate

Leotta,

Toscano,

Ferrante

et al. 2023

Plants

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The native flora of different Mediterranean countries, often woody species, was widely recognized for its ornamental potential. The shrubs, in particular, are a typology of plants very widespread in the Mediterranean environment and constituent the ‘Macchia’, the typical vegetation of this ecosystem. The use of native shrubs for the realization of ornamental green areas has been recently examined for their adaptability to abiotic stress. Abiotic stresses, in fact, are the major limiting growth factor in urban and peri-urban areas. The identification and use of tolerant ornamental species allow the reduction of management costs and preserve the aesthetical value of green areas. Tolerance to drought stress, for instance, in the Mediterranean climate can improve the ecosystem services of these plants in the urban environment. In this review, the possibility to early individuate different plant species’ mechanisms to tolerate or avoid the stresses is analysed, as well as the possibility to increase abiotic stress tolerance through genetic and agronomic strategies. The exploration of wild or spontaneous species can be a good source for selecting tolerant plants to be used as ornamental plants in urban areas. Among agronomic strategies, biostimulants, mulching, and plant combination can provide a useful solution to counteract abiotic stress in the urban environment.

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Section: Ornamental Shrubby Plants In the Urban Environmentmentioning

confidence: 99%

New Strategies to Increase the Abiotic Stress Tolerance in Woody Ornamental Plants in Mediterranean Climate

Leotta,

Toscano,

Ferrante

et al. 2023

Plants

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“…Additionally, trees respond to the urban environment in highly dynamic and sophisticated ways, as many factors influence uprooting failure, including tree geometries, species, tree age, mass, elasticity, and wood density, in addition to the extent of decay, all of which can significantly impact wind resistance [24][25][26]. Thanks to human management, the adaptive capacity of urban trees varies substantially according to the array of environments of streets, parks, and roadsides, and they could exhibit adaptive features very different from natural forests [27][28][29]. For example, a park tree would have a more extensive root structure and moister soil than that of a drier roadside tree in compact paved soil [30].…”

Section: Consequences Of Tree Failure In Developed Landscapesmentioning

confidence: 99%

Unveiling Falling Urban Trees before and during Typhoon Higos (2020): Empirical Case Study of Potential Structural Failure Using Tilt Sensor

Hui

Wong

Kwok

et al. 2022

Forests

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Urban trees in a densely populated environment may pose risks to the public’s safety in terms of the potential danger of injuries and fatalities, loss of property, impacts on traffic, etc. The biological and mechanical features of urban trees may change over time, thereby affecting the stability of the tree structure. This can be a gradual process but can also be drastic, especially after typhoons or heavy rainstorms. Trees may fall at any time with no discernible signs of failure being exhibited or detected. It is always a challenge in urban tree management to develop a preventive alert system to detect the potential failure of hazardous urban trees and hence be able to have an action plan to handle potential tree tilting or tree collapse. Few studies have considered the comparison of tree morphology to the tilt response relative to uprooting failure in urban cities. New methods involving numerical modeling and sensing technologies provide tools for an effective and deeper understanding of the interaction of root-plate movement and windstorm with the application of the tailor-made sensor. In this study, root-plate tilt variations of 889 trees with sensors installed during Typhoon Higos (2020) are investigated, especially the tilting pattern of the two trees that failed in the event. The correlation of tree response during the typhoon among all trees with tilt measurements was also evaluated. The results from two alarm levels developed in the study, i.e., Increasing Trend Alarm and Sudden Increase Alarm indicated that significant root-plate movement to wind response is species-dependent. These systems could help inform decision making to identify the problematic trees in the early stage. Through the use of smart sensors, the data collected by the alert system provides a very useful analysis of the stability of tree structure and tree health in urban tree management.

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“…To date, several studies have been conducted on a local or regional scale, focusing on few species or common garden experiments (e.g. Esperon‐Rodriguez et al., 2020, 2021; Hanley et al., 2021; Ibsen et al., 2023; Ilyas et al., 2021), which limits their broad applicability and capacity to describe global patterns of urban tree distribution.…”

Section: Introductionmentioning

confidence: 99%

Wide climatic niche breadth and traits associated with climatic tolerance facilitate eucalypt occurrence in cities worldwide

Esperon‐Rodriguez,

Tjoelker,

Lenoir

et al. 2024

Global Ecol Biogeogr

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AimEucalypts are important and popular urban tree species across cities worldwide. However, little is known about how their climatic niche breadth (CNB) and functional traits predict their success, and vulnerability, to current climate change in cities. We assessed the relationship between the CNB of eucalypts and key traits to understand their tolerance to climate change.LocationGlobal urban areas, 66 cities in 21 countries.Time period1981 to 2022.Major species studiedFifty ‘eucalypt’ species belonging to the genera Eucalyptus, Angophora and Corymbia.MethodsWe used the species' safety margin concept to determine cities where eucalypts were planted outside the limits of their CNB, as defined from the native range, considering two extreme variables, maximum temperature of the warmest month (MTWM) and precipitation of the driest month (PDM). We assessed correlations between functional traits (leaf δ13C, leaf dry mass, leaf length, leaf N per dry mass, wood density) and negative safety margins, indicative of tolerance to non‐native conditions.ResultsIn total, 42 species planted in 40 cities exceeded their safety margins for MTWM, while 43 species in 38 cities exceeded their safety margins for PDM. Within 24 cities, all species exceeded their native CNB for both MTWM and PDM. The cities of Atakpame (Togo), Chennai (India), Chongqing (China) and the US cities of Phoenix and Riverside had the highest richness of eucalypt species growing outside their native CNB. Broadly, species with wide CNB, small leaves, high δ13C, high leaf N per dry mass and high wood density were more likely to persist in cities where climatic conditions exceeded their native CNB.Main conclusionsEucalypts occupy many cities experiencing climatic conditions outside their native CNB. Species with traits characteristic of heat and drought tolerance are more often planted in cities where climatic conditions may exceed their CNB native limits.

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Adaptation of functional traits and their plasticity of three ornamental trees growing in urban environment

Cited by 18 publications

References 45 publications

New Strategies to Increase the Abiotic Stress Tolerance in Woody Ornamental Plants in Mediterranean Climate

New Strategies to Increase the Abiotic Stress Tolerance in Woody Ornamental Plants in Mediterranean Climate

Unveiling Falling Urban Trees before and during Typhoon Higos (2020): Empirical Case Study of Potential Structural Failure Using Tilt Sensor

Wide climatic niche breadth and traits associated with climatic tolerance facilitate eucalypt occurrence in cities worldwide

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