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Urban intensity gradients shape community structure, life‐history traits and pe...
Casanelles‐Abella, Joan; Pellissier, Loïc; Aleixo, Cristiana; Orti, Marta Alós; Chiron, François; Deguines, Nicolas; Laanisto, Lauri; Myczko, ŁukaszUrban ecosystems are formed by pronounced socio-ecological gradients, which are distinct from other ecosystems and can simultaneously filter and promote taxa, ultimately affecting their interactions. However, the strength of the effect of filtering and facilitation across the different trophic levels could vary among biotic and abiotic factors. Here, we investigate the effects of habitat amount, temperature and...
How do urban green space designs shape avian communities? Testing the area–hete...
Chiron, François; Lorrillière, Romain; Bessa-Gomes, Carmen; Tryjanowski, Piotr; Casanelles-Abella, Joan; Laanisto, Lauri; Leal, Ana I.In cities, green areas are essential for biodiversity conservation, with land cover heterogeneity being a decisive factor. Yet, as heterogeneity increases for a given green area, the patch size of land covers automatically decreases, as the area available for individual species, especially habitat specialist species. This relationship, known as the area-heterogeneity trade-off, is expected to lead to a unimodal...
The magnetic signal from trunk bark of urban trees catches the variation in par...
Van Mensel, Anskje; Wuyts, Karen; Pinho, Pedro; Muyshondt, Babette; Aleixo, Cristiana; Orti, Marta Alos; Casanelles-Abella, Joan; Chiron, FrançoisBiomagnetic monitoring increasingly is applied to assess particulate matter (PM) concentrations, mainly using plant leaves sampled in small geographical area and from a limited number of species. Here, the potential of magnetic analysis of urban tree trunk bark to discriminate between PM exposure levels was evaluated and bark magnetic variation was investigated at different spatial scales. Trunk bark was sample...
Negative relationship between woody species density and size of urban green spa...
Alós Ortí, Marta; Casanelles-Abella, Joan; Chiron, François; Deguines, Nicolas; Hallikma, Tiit; Jaksi, Piia; Kwiatkowska, Patrycja K.; Moretti, MarcoUrban green spaces (UGSs) are important elements of urban landscapes. Woody vegetation is a key component of UGSs, providing many socio-ecological benefits such as habitat provision and human well-being. Knowing plant diversity and vegetation configuration that underpin urban ecosystem processes and functions is critical to maximize nature contributions to city dwellers. Here, we present a well-replicated multi...
Wild bee larval food composition in five European cities
Casanelles‐Abella, Joan; Keller, Alexander; Müller, Stefanie; Aleixo, Cristiana; Alós‐Orti, Marta; Chiron, François; Laanisto, Lauri; Myczko, ŁukaszUrbanization poses threats and opportunities for the biodiversity of wild bees. At the same time, cities can harbor diverse wild bee assemblages, partly due to the unique plant assemblages that provide resources. While bee dietary preferences have been investigated in various studies, bee dietary studies have been conducted mostly in nonurban ecosystems and data based on plant visitation observations or palynol...
Phyllosphere bacterial communities in urban green areas throughout Europe relat...
Muyshondt, Babette; Wuyts, Karen; Van Mensel, Anskje; Smets, Wenke; Lebeer, Sarah; Aleixo, Cristiana; Alós Ortí, Marta; Casanelles-Abella, JoanThe phyllosphere harbours a diverse and specific bacterial community, which influences plant health and ecosystem functioning. In this study, we investigated the impact of urban green areas connectivity and size on the composition and diversity of phyllosphere bacterial communities. Hereto, we evaluated the diversity and composition of phyllosphere bacterial communities of 233 Platanus x acerifolia and Acer pse...
How wild bees find a way in European cities: Pollen metabarcoding unravels mult...
Casanelles‐Abella, Joan; Müller, Stefanie; Keller, Alexander; Aleixo, C.; Alós Orti, Marta; Chiron, François; Deguines, Nicolas; Hallikma, TiitUrban ecosystems can sustain populations of wild bees, partly because of their rich native and exotic floral resources. A better understanding of the urban bee diet, particularly at the larval stage, is necessary to understand biotic interactions and feeding behaviour in urban ecosystems, and to promote bees by improving the management of urban floral resources. We investigated the larval diet and distribution ...
Response of bats and nocturnal insects to urban green areas in Europe
Villarroya-Villalba, Lucía; Casanelles-Abella, Joan; Moretti, Marco; Pinho, Pedro; Samson, Roeland; Van Mensel, Anskje; Chiron, FrançoisAnimal biodiversity in cities is generally expected to be uniformly reduced, but recent studies show that this is modulated by the composition and configuration of Urban Green Areas (UGAs). UGAs represent a heterogeneous network of vegetated spaces in urban settings that have repeatedly shown to support a significant part of native diurnal animal biodiversity. However, nocturnal taxa have so far been understudi...