Intraspecific differences in plant functional traits are related to urban atmospheric particulate matter

Zhu, Jiyou; Xu, Chengyang

doi:10.1186/s12870-021-03207-y

Cited by 9 publications

(1 citation statement)

References 55 publications

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“…Different specific indices associated with the leaf surface, such as SLA, TDM, DBAR, were used to characterize certain plant species as bioindicators in relation to urban ecosystems (Datcu et al, 2017;Zhu and Xu, 2021).…”

Section: Introductionmentioning

confidence: 99%

NON-DESTRUCTIVE METHOD TO DETERMINING THE LEAF AREA IN HEMP, Cannabis sativa L.

BUZNA¹,

Sala²

2022

LSSD

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The evaluation of the leaf surface of hemp leaves, Cannabis sativa L., was the subject of the present study. The biological material was represented by the hemp variety 'Silvana', cultivated in SCDA Lovrin, Romania. Hemp leaves were taken randomly from mature plants. The leaves were herborized immediately after harvesting, in the field, in order to preserve the configuration of the leaves for analysis. Each leaf was scanned in a 1:1 ratio. The leaves were measured in terms of length (in the direction of the central leaflet) and width (maximum opening of the leaflets). For the measurement, a precision of ±0.5 mm was ensured. The scanned leaves were analyzed and the perimeter (Per) and scanned leaf area (SLA) were obtained. The correction factor (CF) was determined in order to be used for calculating the measured leaf area (MLA) by non-destructive methods. The value CF=0.27 was found, where the error as the difference between MLA and SLA (considered as a reference) was minimal (ME=0.87 cm2). The calculation of the RMSEP parameter confirmed the value of the correction factor (0.27), at which the RMSEP value was the minimum (RMSEP=9.74929). The fitting relationship between MLA and SLA was described by a linear equation, under conditions of R2=0.952, p<0.001. Polynomial equations of the 3rd degree described the interdependence relationship between SLA and parameters L (R2=0.932) and w (R=0.964) of the leaves, and a polynomial equation of the 2nd degree described the relationship between SLA and Per (R2=0.995). Stronger correlation levels were identified between MLA and dimensional parameters of leaves (L, w; r=0.969 for MLA with L; r=0.974 for MLA with w), than between SLA and dimensional parameters of hemp leaves (r =0.927 for SLA with L; r=0.957 for SLA with w). This difference can be explained based on the methods of determining SLA (by scanning) and MLA (by measurement, based on L, w, CF), MLA having a direct relationship between L and w from the calculation relationship, a fact that confirms the usefulness of the work method.

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Section: Introductionmentioning

confidence: 99%

NON-DESTRUCTIVE METHOD TO DETERMINING THE LEAF AREA IN HEMP, Cannabis sativa L.

BUZNA¹,

Sala²

2022

LSSD

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Effects of urban, peri-urban and rural land covers on plant functional traits around Bogotá, Colombia

Salamanca-Fonseca,

Aldana,

Vargas-Martinez

et al. 2023

Urban Ecosyst

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The Global South has suffered an accelerated population and urban growth. This has created multiple impacts at the regional level such as erosion, soil degradation and biodiversity loss, as well as temperature increase in the cities causing urban heat islands. Bogotá, the capital of Colombia, is one of the largest cities in the Global South and in the last five decades has undergone a rapid urban transition, impacting surrounding ecosystems. However, little is known about how urbanization affects the local flora. To understand how plants are responding and adapting to urbanization processes in the city of Bogotá, we used a land cover gradient of urban, peri-urban and rural areas, and four plant functional traits (leaf area [LA], specific leaf area [SLA], leaf dry matter content [LDMC] and wood density [WD]). We analyzed 16 species shared in at least two land covers. Although urban and peri-urban areas had higher temperatures and higher LDMC and lower SLA values than rural areas, there were no significant differences in functional traits between land covers. Some species showed significant changes between land covers, indicating that there is a species-specific response to urbanization. Considering the need for urban areas to prioritize species that promote cooling and exhibit resistance to stress, as well as the capacity to adapt to climate change, it is essential to include plants possessing different combinations of functional traits.

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