Phenological effects of artificial light at night on urban trees: A case study on microclimate and light pollution
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Dátum
2026
Názov časopisu
ISSN časopisu
Názov zväzku
Vydavateľ
Elsevier GmbH : Jena
ISBN
ISSN
1618-8667
1610-8167
1610-8167
Abstrakt
Artificial light at night (ALAN) is a pervasive but understudied stressor for urban trees, significantly affecting their phenology. The study investigates the impact of ALAN on autumn leaf colouring (LC10 % and LC100 %) in Acer pseudoplatanus, Acer platanoides, and Betula pendula in urban settings during 2016 and 2023. Using Linear Mixed Models, we analyzed phenological timing in illuminated (L) versus non-illuminated (N) crown parts, considering meteorological factors. Our results show that ALAN significantly delays the initial leaf colouring (LC10 %), suggesting an extension of the growing season. However, this effect did not significantly vary across species or crown parts, indicating a broad initial sensitivity. For complete leaf colouring (LC100 %), ALAN's direct influence diminished, with meteorological conditions emerging as primary drivers. Both species-specific traits and microclimatic differences within the crown consistently proved highly significant for both phenophases, highlighting inherent variability. Crucially, although ALAN's overall effect on species-specific senescence timing was not statistically distinct, species that naturally senesce later (e.g., Betula pendula) experienced disproportionately greater ALAN-induced delays in LC100 %. This strong positive correlation between natural senescence onset and ALAN-induced delay for complete leaf colouring underscores a critical vulnerability for late-season species. These findings emphasise the complex interplay between ALAN, meteorological factors, and species-specific responses in urban tree phenology. Understanding these dynamics is vital for sustainable urban trees management, guiding species selection and lighting design to mitigate negative impacts on tree health and urban ecosystem services.
Popis
In: Urban Forestry & Urban Greening. Jena : Elsevier GmbH, 2026. ISSN 1618-8667. No. 116 (2026), pp. [1-11].
Kľúčové slová
ekosystémové služby, ecosystem services, fenológia listov, leaf phenology, svetelné znečistenie, mestské lesníctvo, urban forestry
Výstup z projektu
VEGA 1/0086/26 Fenológia drevín ako indikátor odozvy ekosystémov na zmenu klímy - rizikové faktory a časová variabilita
VEGA 1/0443/23 Dopady extrémov súvisiacich s klímou na lesné ekosystémy a krajinu v podmienkach prebiehajúcich zmien prostredia
APVV-18–0347 Zmeny klímy a prírodné riziká: zraniteľnosť a adaptačné kapacity lesných ekosystémov Západných Karpát
Citácia
Práva a licenčné podmienky
CC BY-NC Creative Commons Attribution-NonCommercial 4.0. International
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess