Urban alien plants in temperate oceanic regions of Europe originate from warmer native ranges

Géron, Charly; Lembrechts, Jonas J.; Borgelt, Jan; Lenoir, Jonathan; Hamdi, Rafiq; Mahy, Grégory; Nijs, Ivan; Monty, Arnaud

doi:10.1007/s10530-021-02469-9

Cited by 17 publications

(14 citation statements)

References 67 publications

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“…The number of alien species transported between countries was therefore restricted. On the one hand, by limiting environmental conditions in the recipient region that could restrict establishment ,,− and on the other hand, by incomplete data on species arrivals. ,, While environmental conditions in the importing country are implicitly included in the fitted GLMM, incomplete occurrence data may lead to false absences of alien species in some regions. This could directly affect the estimated effect sizes of the GLMM.…”

Section: Discussionmentioning

confidence: 99%

“…Anthropogenic activities, as well as environmental conditions of the recipient system, crucially influence the rate of arrival and establishment success of alien species. , Alien species that manage to reproduce independently over large areas and/or cause substantial negative impacts are named “invasive alien species” . Invasive alien species can have devastating impacts on ecosystem dynamics in multiple ways, even with implications for human health − and the economy. , Their ecosystem impacts range from altering environmental conditions and disrupting food webs to triggering declines in species diversity. − These invasive alien species are one of the biggest threats to global biodiversity. , …”

Section: Introductionmentioning

confidence: 99%

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What Is the Impact of Accidentally Transporting Terrestrial Alien Species? A New Life Cycle Impact Assessment Model

Borgelt,

Dorber,

Géron

et al. 2024

Environ. Sci. Technol.

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Alien species form one of the main threats to global biodiversity. Although Life Cycle Assessment attempts to holistically assess environmental impacts of products and services across value chains, ecological impacts of the introduction of alien species are so far not assessed in Life Cycle Impact Assessment. Here, we developed country-to-country-specific characterization factors, expressed as the time-integrated potentially disappeared fraction (PDF; regional and global) of native terrestrial species due to alien species introductions per unit of goods transported [kg] between two countries. The characterization factors were generated by analyzing global data on first records of alien species, native species distributions, and their threat status, as well as bilateral trade partnerships from 1870–2019. The resulting characterization factors vary over several orders of magnitude, indicating that impact greatly varies per transportation route and trading partner. We showcase the applicability and relevance of the characterization factors for transporting 1 metric ton of freight to France from China, South Africa, and Madagascar. The results suggest that the introduction of alien species can be more damaging for terrestrial biodiversity as climate change impacts during the international transport of commodities.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

What Is the Impact of Accidentally Transporting Terrestrial Alien Species? A New Life Cycle Impact Assessment Model

Borgelt,

Dorber,

Géron

et al. 2024

Environ. Sci. Technol.

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“…Global warming creates asymmetric new competition by driving species range shifts (Alexander et al, 2016; Usinowicz & Levine, 2021). Exotic species may benefit from climate warming because they are thought to come from warmer ranges or may tolerate a wider range of temperatures (Geron et al, 2021; Liu et al, 2017; Suda et al, 2015). In particular, warmer temperature extremes are crucial for the dispersal of exotic plants (Diez et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Native diversity contributes to composition heterogeneity of exotic floras

et al. 2023

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Variation in species composition among sites (beta diversity) is generally thought to be driven by environmental filtering and dispersal limitation, but the role of biotic interactions has not been sufficiently addressed. Specifically, the early species in a local community may contribute to subsequent beta diversity patterns. Exotic assemblages within native communities provide a unique opportunity to study biotic interaction mechanisms. In this study, we conducted a field survey of plants over an approximately 1800‐km transect in the middle and lower Yangtze River valley in China to study how native communities influence exotic beta diversity. The survey included 459 plots in 51 local plant communities with 40 exotic species and 103 co‐occurring native species. We also investigated how 11 environmental factors involving climate conditions, soil properties, and human activity regulate the interaction between native and exotic plants. The results showed that native diversity (Shannon–Wiener index) increased exotic beta diversity. Environmental conditions, especially monthly minimum temperature, influenced exotic beta diversity indirectly through native diversity rather than directly. Our results suggest that lower native diversity driven by environmental conditions, especially warmer temperatures, led to a decrease in composition heterogeneity of the exotic flora. Our results will help to incorporate biotic interactions into the framework of beta diversity mechanisms for local community assembly.

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“…The increasing presence of thermophilous species in urban areas is regularly related to the presence of neophytes, which often originate from warmer regions (Géron et al, 2021;Scherrer et al, 2022).…”

Section: Forest Structure and Microclimate Effectsmentioning

confidence: 99%

Nutrient‐demanding and thermophilous plants dominate urban forest‐edge vegetation across temperate Europe

De Pauw,

Depauw,

Calders

et al. 2024

J Vegetation Science

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QuestionsForests are highly fragmented across the globe. For urban forests in particular, fragmentation increases the exposure to local warming caused by the urban heat island (UHI) effect. We here aim to quantify edge effects on herbaceous understorey vegetation in urban forests, and test whether these effects interact with forest structural complexity.LocationWe set up a pan‐European study at the continental scale including six urban forests in Zurich, Paris, Katowice, Brussels, Bremen, and Stockholm.MethodsWe recorded understorey plant communities from the edge towards the interior of urban forests. Within each urban forest, we studied edge‐to‐interior gradients in paired stands with differing forest structural complexity. Community composition was analysed based on species specialism, life form, light, nutrient, acidity and disturbance indicator values and species' thermal niches.ResultsWe found that herbaceous communities at urban forest edges supported more generalists and forbs but fewer ferns than in forests' interiors. A buffered summer microclimate proved crucial for the presence of fern species. The edge communities contained more thermophilous, disturbance‐tolerant, nutrient‐demanding and basiphilous plant species, a pattern strongly confirmed by corresponding edge‐to‐interior gradients in microclimate, soil and light conditions in the understorey. Additionally, plots with a lower canopy cover and higher light availability supported higher numbers of both generalists and forest specialists. Even though no significant interactions were found between the edge distance and forest structural complexity, opposing additive effects indicated that a dense canopy can be used to buffer negative edge effects.ConclusionThe urban environment poses a multifaceted filter on understorey plant communities which contributes to significant differences in community composition between urban forest edges and interiors. For urban biodiversity conservation and the buffering of edge effects, it will be key to maintain dense canopies near urban forest edges.

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Urban alien plants in temperate oceanic regions of Europe originate from warmer native ranges

Cited by 17 publications

References 67 publications

What Is the Impact of Accidentally Transporting Terrestrial Alien Species? A New Life Cycle Impact Assessment Model

What Is the Impact of Accidentally Transporting Terrestrial Alien Species? A New Life Cycle Impact Assessment Model

Native diversity contributes to composition heterogeneity of exotic floras

Nutrient‐demanding and thermophilous plants dominate urban forest‐edge vegetation across temperate Europe

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