13 documents found, page 1 of 2
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...
Urban Green Connectivity Assessment: A Comparative Study of Datasets in Europea...
Aleixo, Cristiana; Branquinho, Cristina; Laanisto, Lauri; Tryjanowski, Piotr; Niinemets, Ülo; Moretti, Marco; Samson, Roeland; Pinho, PedroUrban biodiversity and ecosystem services depend on the quality, quantity, and connectivity of urban green areas (UGAs), which are crucial for enhancing urban livability and resilience. However, assessing these connectivity metrics in urban landscapes often suffers from outdated land cover classifications and insufficient spatial resolution. Spectral data from Earth Observation, though promising, remains underu...
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...
Modelling the response of urban lichens to broad-scale changes in air pollution...
Rocha, Bernardo; Matos, Paula; Giordani, Paolo; Piret, Lõhmus; Branquinho, Cristina; Casanelles-Abella, Joan; Aleixo, Cristiana; Deguines, NicolasTo create more resilient cities, it is important that we understand the effects of the global change drivers in cities. Biodiversity-based ecological indicators (EIs) can be used for this, as biodiversity is the basis of ecosystem structure, composition, and function. In previous studies, lichens have been used as EIs to monitor the effects of global change drivers in an urban context, but only in single-city s...
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...
Modelling the response of urban lichens to broad-scale changes in air pollution...
Rocha, Bernardo; Matos, Paula; Giordani, Paolo; Piret, Lõhmus; Branquinho, Cristina; Casanelles-Abella, Joan; Aleixo, Cristiana; Deguines, NicolasTo create more resilient cities, it is important that we understand the effects of the global change drivers in cities. Biodiversity-based ecological indicators (EIs) can be used for this, as biodiversity is the basis of ecosystem structure, composition, and function. In previous studies, lichens have been used as EIs to monitor the effects of global change drivers in an urban context, but only in single-city s...
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 ...