Tree leaf wettability as passive bio-indicator of urban habitat quality

Kardel, Fatemeh; Wuyts, Karen; Babanezhad, Manoochehr; Wuytack, Tatiana; Adriaenssens, Sandy; Samson, Roeland

doi:10.1016/j.envexpbot.2011.07.011

Cited by 50 publications

(49 citation statements)

References 50 publications

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“…This means that depending on the habitat conditions, the wettability is variable even among plants of the same species. Combining our results with Kardel et al (2012), the leaf CAs are increasing from industrial to semi-natural and finally to natural (present study) habitats (Table 2). The increase of CA values with the decrease of air pollution is on that particular situation and particular plant species may be a rule, but further investigation are needed to test that hypothesis.…”

Section: Discussionsupporting

confidence: 74%

“…This is the result of the type of habitat. According to Kardel et al (2012), the habitat type significantly affects leaf wettability. In our study, the samples were taken from a natural habitat, which confirms the thesis that leaves have higher CA values in their natural habitat.…”

Section: Discussionmentioning

confidence: 99%

“…A short measurement time was selected to preserve changes of the drop shape due to evaporation. The heterogeneity of the leaf surface that can be the result of wax erosion and/or quality degradation was estimated by the drop asymmetry coefficient proposed by Kardel et al (2012) and expressed as:…”

Section: Methodsmentioning

confidence: 99%

“…According to Kardel et al (2012), leaf wettability determined from the value of CA can also be used as bio-indicator of habitat quality. Moreover, on a larger scale, it may be meaningful in describing water cycle processes in nature because of its significant role in transpiration and interception processes.…”

Section: Introductionmentioning

confidence: 99%

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Contact angle measurements and water drop behavior on leaf surface for several deciduous shrub and tree species from a temperate zone

Papierowska

Szporak-Wasilewska

Szewińska

et al. 2018

Trees

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Key message Leaf CA measurement should take into account angle variation during measurement time. Leaf wettability of common deciduous forest plants is characterized by wetting contact angles ranging from 60° to 140° with a significant variation between species of the same family. Abstract Leaf wettability is an important phenomenon that has an influence on several processes such as the hydrological cycle, plant pathogen growth, or pollutant and pesticide absorption/deposition. The main objective of this research was to investigate the leaf wettability differences of 19 species (16 trees and 3 shrubs) of deciduous plants commonly occurring in Polish forests (temperate climate). The measurements were gathered as follows: 20 undamaged leaves were selected for each species and the wettability was determined by contact angle measurements with an optical goniometer CAM 100 using the sessile drop method. The contact angle was measured with 1-s intervals during 2 min from droplet deposition on adaxial and abaxial leaf surface. Laboratory analyses were completed during the summer of 2016 during full vegetation growth. A general CA decrease with time was observed on both leaf sides. The contact angle values ranged from 60° to 140° depending on species and leaf side. Differences between contact angle values at the beginning and the end of measurement reached 23.6° and engendered changes of wetting classes for some species. In many cases, no wettability class change was observed despite a CA lowering of 20°. The abaxial side was found to be the more repellent for 14 out of 19 species. Altogether, the leaves were classified from highly wettable to highly non-wettable, probably depending on the plant-survival strategy.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contact angle measurements and water drop behavior on leaf surface for several deciduous shrub and tree species from a temperate zone

Papierowska

Szporak-Wasilewska

Szewińska

et al. 2018

Trees

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“…The same author indicates that the described species is tolerant to the effect of oxidative gases (O 3 , PAN, NO X ), acidic gases (SO 2 ) and basic gases (NH 3 ) and it is not very sensitive to the action of fluorine compounds and ions of toxic metals [13]. Also according to Kardel and [14]. It was found that Quercus robur L. is more sensitive to acid rains than Turkey oak (Quercus cerris L.) or pubescent oak (Quercus pubescens Willd.…”

mentioning

confidence: 99%

EVALUATION OF THE EFFECT OF ENVIRONMENTAL VARIABLES ON HEALTH CONDITION OF Quercus robur L. IN PARKS

Krzyżaniak¹,

Świerk²,

Urbański³

et al. 2013

Ecological Chemistry and Engineering S

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Investigations concerned the effect of different environmental variables on health condition of English oak (Quercus robur L.). It was shown that in the public parks in the city of Poznan the health condition of the analysed species is good. It was stated that health condition of this species in the Poznan parks is influenced by the distance from the immediate city centre, vicinity of traffic arteries and gas emissions from the combustion of fossil fuels by households neighbouring with the parks. Although results recorded in this study confirm literature data concerning the effect of environmental variables on health condition of English oak (Quercus robur L.), it was shown that certain environmental variables have a greater effect on health condition of the analysed species in Poznan.

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Effects of leaf hydrophobicity and water droplet retention on canopy storage capacity

Holder

2012

Ecohydrology

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Canopy storage capacity is influenced by several variables, including canopy surface area, canopy architecture, and wind. Different species with the same canopy area, but with differences in leaf hydrophobicity and water droplet retention, may produce different values of canopy storage capacity. The objective of this study was to investigate if leaf hydrophobicity and water droplet retention are additional influences on canopy storage capacity. Specifically, this study tested the hypothesis that species with the highest leaf hydrophobicity and the lowest water droplet retention had the lowest canopy storage capacity on a per leaf area basis. Seven tree species from Colorado, United States were selected for experimentation. Five branches from each species were lopped, positioned under a rainfall simulator, and connected to a balance to record the mass gain of the branches by rainfall interception during 17 min of rainfall simulation. Each branch was destructively sampled following rainfall simulation to calculate the leaf and woody surface areas. The rank order of leaf surface storages at canopy storage capacity for each species corresponded to the rank order of leaf hydrophobicity and water droplet retention for each species. Species with the highest leaf surface storage had the lowest leaf hydrophobicity and the lowest water droplet retention. The significance of leaf hydrophobicity and water droplet retention as variables that influence canopy storage capacity is a largely unexplored topic in ecohydrology. Copyright © 2012 John Wiley & Sons, Ltd.

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Tree leaf wettability as passive bio-indicator of urban habitat quality

Cited by 50 publications

References 50 publications

Contact angle measurements and water drop behavior on leaf surface for several deciduous shrub and tree species from a temperate zone

Contact angle measurements and water drop behavior on leaf surface for several deciduous shrub and tree species from a temperate zone

EVALUATION OF THE EFFECT OF ENVIRONMENTAL VARIABLES ON HEALTH CONDITION OF Quercus robur L. IN PARKS

Effects of leaf hydrophobicity and water droplet retention on canopy storage capacity

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