Shielded environments reduce stress in alien Asteraceae species during hot and dry summers along urban‐to‐rural gradients

Géron, Charly; Lembrechts, Jonas J.; Nijs, Ivan; Monty, Arnaud

doi:10.1002/ece3.7872

Cited by 6 publications

(3 citation statements)

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“…We chose the Atlantic biogeographical region of Belgium (European Environment Agency 2011), i.e. the area north of the Meuse river, as study area, in order to limit variation in background climate (Géron et al 2021). This region has a temperate oceanic climate, with relatively cool and wet summers, and mild and humid winters (Royal meteorological institute (RMI) 2021).…”

Section: Discoidea Populations and Field Samplingmentioning

confidence: 99%

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Phenotypic variation along urban-to-rural gradients: an attempt to disentangle the mechanisms at play using the alien species Matricaria discoidea (Asteraceae)

et al. 2022

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developed, i.e. environmental maternal effects. Understanding the impact of city environments on phenotypes might be especially important for alien plant species, as these are often showing exceptionally high density and diversity in cities. However, studies of the sources of alien plant trait variations in urban environments are rare. We conducted a simulated reciprocal common garden experiment using seeds of populations of M. discoidea along urbanization gradients in Belgium. These seeds were sown in growth chambers to study how germination, growth, and flowering traits of the alien species Matricaria discoidea vary in response to temperature (rural or urban) and soil (rural or urban) treatments and the urbanity (percentage of impervious surfaces) of its source population. We found predominant effects of seed mass and germination delay which materialized important Abstract Cities often exhibit higher temperatures, drier soils and greater habitat fragmentation than rural areas, and may thus represent constraining growing environments for plants. This variety of environmental conditions along urban-to-rural gradients might lead to plasticity in plant traits. Urban conditions could affect plant traits such as germination or flower number -key variables for organismal fitness. These proxies of fitness could then potentially experience strong selection in urban environments. Trait variations among individuals are not only due to genotype or the environmental conditions: they can also result from the conditions in which the mother individual

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Section: Discoidea Populations and Field Samplingmentioning

confidence: 99%

“…Plant trait variation can be expected along the urban-to-rural gradient due to several mechanisms (Géron et al 2021;Nicotra et al 2010). Phenotypic plasticity, i.e.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic variation along urban-to-rural gradients: an attempt to disentangle the mechanisms at play using the alien species Matricaria discoidea (Asteraceae)

et al. 2022

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“…Urban heat islands (UHIs) have been widely observed worldwide in recent decades. Existing literature shows that temperature rise is closely related to energy consumption [6][7][8], air pollution [9,10], biodiversity [11,12], and the health of residents [13][14][15]. Therefore, the impacts of urban heat islands are a significant concern in urban environmental research.…”

Section: Introductionmentioning

confidence: 99%

Identifying Surface Urban Heat Island Drivers and Their Spatial Heterogeneity in China’s 281 Cities: An Empirical Study Based on Multiscale Geographically Weighted Regression

et al. 2021

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The spatially heterogeneous nature and geographical scale of surface urban heat island (SUHI) driving mechanisms remain largely unknown, as most previous studies have focused solely on their global performance and impact strength. This paper analyzes diurnal and nocturnal SUHIs in China based on the multiscale geographically weighted regression (MGWR) model for 2005, 2010, 2015, and 2018. Compared to results obtained using the ordinary least square (OLS) model, the MGWR model has a lower corrected Akaike information criterion value and significantly improves the model’s coefficient of determination (OLS: 0.087–0.666, MGWR: 0.616–0.894). The normalized difference vegetation index (NDVI) and nighttime light (NTL) are the most critical drivers of daytime and nighttime SUHIs, respectively. In terms of model bandwidth, population and Δfine particulate matter are typically global variables, while ΔNDVI, intercept (i.e., spatial context), and NTL are local variables. The nighttime coefficient of ΔNDVI is significantly negative in the more economically developed southern coastal region, while it is significantly positive in northwestern China. Our study not only improves the understanding of the complex drivers of SUHIs from a multiscale perspective but also provides a basis for urban heat island mitigation by more precisely identifying the heterogeneity of drivers.

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Phenotypic plasticity as the main driver of alien plant trait variation in urban versus rural microclimate for the model species Veronica persica

Géron,

Lembrechts,

Fameree

et al. 2024

Oecologia

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Shielded environments reduce stress in alien Asteraceae species during hot and dry summers along urban‐to‐rural gradients

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 6 publications

References 91 publications

Phenotypic variation along urban-to-rural gradients: an attempt to disentangle the mechanisms at play using the alien species Matricaria discoidea (Asteraceae)

Phenotypic variation along urban-to-rural gradients: an attempt to disentangle the mechanisms at play using the alien species Matricaria discoidea (Asteraceae)

Identifying Surface Urban Heat Island Drivers and Their Spatial Heterogeneity in China’s 281 Cities: An Empirical Study Based on Multiscale Geographically Weighted Regression

Phenotypic plasticity as the main driver of alien plant trait variation in urban versus rural microclimate for the model species Veronica persica

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