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Urban Ecosystems 

Latest Results for Urban Ecosystems
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Correction to: The effect of urban green roof design on beetle biodiversity
01. Februar 2022
Correction to: Can road stormwater ponds be successfully exploited by the European green frog (Pelophylax sp.)?
01. Februar 2022
To the rescue—Evaluating the social-ecological patterns for bird intakes
01. Februar 2022
Abstract Animals from urban areas are regularly brought into wildlife rehabilitation centers, providing untapped potential data records to inform management of wildlife species. Although rescues may be considered a wildlife stewardship behavior, not all ‘rescues’ may be warranted. Some animals are more likely to be brought into a rescue center than others, suggesting that human drivers underlying wildlife rehabilitation efforts are important to understand for urban conservation efforts. Literature has primarily focused on understanding the ecological drivers...
Areas of ecological importance are exposed to risk from urban sky glow: Auckland, Aotearoa-New Zealand as a case study
01. Februar 2022
Abstract Light pollution is an issue of global significance for urban ecosystems, especially where areas of natural and ecological importance are located in and around cities. We investigated levels of night sky brightness around Auckland, Aotearoa-New Zealand, to determine the extent of sky glow, its potential to mask the lunar cycle, its relation to land use and the risks it poses to nearby areas of natural and ecological importance. Annual measurements of night sky brightness were carried out over 3 years at 115 randomly chosen sites within 15 km of Auckland’s...
American Oystercatcher benefits from a heterogeneous landscape to breed in an urbanized area in southern Brazil
01. Februar 2022
Abstract Urbanization is a major form of landscape transformation that often results in habitat degradation and loss for birds. However, effects on avian populations are trait- and context-dependent, and persistence at urban patches is likely to be a function of habitat availability at the landscape scale. Here, we aimed to assess the breeding performance and foraging ecology of a widespread shorebird, the American Oystercatcher Haematopus palliatus, during the 2017–2018 and 2018–2019 breeding seasons at a small urban beach surrounded by a heterogeneous landscape in...
More than noise: light, moon phase, and singing behavior in a passerine
01. Februar 2022
Abstract Most studies on the effects of urbanization on animal communication have focused on the influence of acoustic pollution on vocal production. Comparatively few studies have addressed the potential impact of light pollution on animal acoustic signals, with no studies having looked at the structure of vocalizations. We know, however, that light is related to melatonin production, influencing activity patterns of organisms, which opens the possibility that artificial light at night may affect also the structure of animal vocalizations. Here we studied whether there...
The queen of the island: On the density and distribution of the Eurasian Collared-Dove (Streptopelia decaocto) in Cozumel
01. Februar 2022
Abstract The Eurasian Collared-Dove (Streptopelia decaocto) is one of the most successful invasive bird species across the world. Worryingly, the invasive dove is a known reservoir of many diseases, some of which can potentially infect mammals (including human beings). Additionally, aggressive behaviors have been recorded toward other bird species resulting in territory and nest usurpation. Thus, the presence of this species poses an important risk for native species with similar habits, particularly in insular systems. Based on this, we carried out this study to...
Azadirachta indica A. Juss. a multi-purpose tree as a leading species in carbon stocking in two Sahelian cities of Niger
01. Februar 2022
Abstract The role of urban trees in the climate change discourse is not well articulated due to limited data. Understanding the factors that influence the role of urban forests and their species in carbon storage, an important issue in climate change will be essential in this respect. Arguing that multipurpose trees are likely to be preferred in urban forests in developing countries due to the varied and numerous benefits that planters derive from them. Carbon stock in urban forests of Niamey and Maradi in Niger, across land use/cover types, was estimated to ascertain...
Litter decomposition and infiltration capacities in soils of different tropical urban land covers
01. Februar 2022
Abstract Healthy soil ecosystems are important for urban sustainability, because they provide the basis for ecosystem services such as flood regulation, nutrient cycling and carbon sequestration. We investigated the soils beneath five types of urban land cover in the tropical city of Singapore—secondary forest, managed grass, shrubs, trees, and trees with shrubs. We quantified the capacity of these soils to support two key ecosystem functions: litter decomposition, which we measured using a standardised tea bag method, and infiltration, which we measured using a...
Data synthesis and dynamic visualization converge into a comprehensive biotic interaction network: a case study of the urban and rural areas of Bogotá D.C.
01. Februar 2022
Abstract Documenting biotic interactions is pivotal for understanding ecosystem processes, and although there is a large amount of data in the scientific literature, it is overly dispersed in thousands of different sources with varying degrees of availability. Despite recent and partially successful efforts to integrate biotic interaction data at a global scale into single databases, those have mostly incorporated data for natural and conserved locations, while urban and densely populated areas remain largely under-sampled. Considering that filling these gaps is...
Effect of replacing surface with underground rubbish containers on urban House Sparrows Passer domesticus
01. Februar 2022
Abstract Urbanisation processes are increasing worldwide at surprising rates affecting wildlife in many ways: changing habitat structure, reducing resources, and modifying the distribution, composition and abundance of local biota. In different countries, urban waste collection techniques are evolving and surface rubbish containers (neighbourhood receptacles for temporarily storing anthropogenic household waste located above-ground on the streets) are being replaced with underground ones (metal boxes with steel chutes that fed into large underground containers) to...
Urban structure and environment impact plant species richness and floristic composition in a Central European city
01. Februar 2022
Abstract Cities represent enviroment for most of Europe's human population. Spatial pattern of cities' environmental as well as socioeconomic features affect plant biodiversity. We analysed a floristic mapping dataset of the city of Ljubljana (Slovenia) and asked what affects the spatial differences in the presence of different categories of species: species according to residence time and endangered and thermophilic species. To explain the proportions of these species groups in grid cells, using Generalized Additive Models, we tested the effects of three categories of...
The effect of urban green roof design on beetle biodiversity
01. Februar 2022
Abstract The biodiversity conservation value of urban green spaces depends in part on design and management. The importance of habitat quality and complexity to species diversity has led to the suggestion that habitat design elements—varied substrate, greater plant diversity, logs or stones—would support invertebrate diversity on green roofs. To evaluate this possibility, we conducted pit-fall trap sampling on three green roofs of simple design (intended primarily for stormwater management), three habitat roofs, and five ground-level green spaces, in the Portland...
Ecology of the synanthropic mediterranean house gecko (Hemidactylus turcicus) at their northern invasion front
01. Februar 2022
Abstract Invasive herpetofauna are a significant threat to native wildlife and when colonizing higher latitudes, they must cope with greater seasonality that likely exposes them to temperatures below their preferred temperature range and reduced physiological performance. Therefore, it is important to understand the ecology of invasive herpetofauna along their invasion front as this is the point they face the most disparate climates to their invasive range core. We studied a population of Mediterranean House Geckos (Hemidactylus turcicus) that recently colonized an...
Say what? On the transmission of acoustic signals in a Neotropical green city
01. Februar 2022
Abstract Cities do not only represent noisy systems, but also limit acoustic communication given the complex array of artificial structures through which signals can be trapped or obscured. In this study we performed a field experiment to evaluate the loss of energy of a standardized acoustic emission (generated with notes and a call of the Clay-colored Thrush – Turdus grayi). For this, we emitted the acoustic signal and recovered it at increasing radial distances from 26 fixed emission points (i.e., 10 m, 20 m, 40 m, 80 m, 120 m, 160 m) located across the city...
Temporal variation in ant community assemblages along a rural–urban gradient in the Yaoundé metropolis, Cameroon
01. Februar 2022
Abstract Urbanization is one of the most lasting anthropogenic disturbances threatening native species diversity including ants. Ants play important ecological functions such as seed dispersal, biological pest control, and bio-indicators of environmental changes. Herein, we investigated and tracked ant communities in three sites (rural, suburban and urban) in 2007 and resampled the same categories ten years after, using the same methods. A total of 39 species belonging to 7 subfamilies and 19 genera was recorded during the two sampling periods. During the 10-year study...
Can road stormwater ponds be successfully exploited by the European green frog (Pelophylax sp.)?
01. Februar 2022
Abstract Stormwater ponds (“SWPs”) are artificial roadside structures, conceived to retain and clean polluted runoff water, before its release to the environment. SWPs were not designed as suitable habitats for wildlife. However, SWPs in Europe are frequently used as breeding sites by amphibians, especially by the European green frog (Pelophylax sp.). Yet, the potential long-term effects of pollutants within SWPs on the populations of this species are unknown. In this study, we investigated the suitability of SWPs as a habitat for European green frogs living in...
Siblicide in the city: the urban heat island accelerates sibling cannibalism in the black widow spider (Latrodectus hesperus)
01. Februar 2022
Abstract Urbanization can compromise biodiversity as cities expand further into native landscapes. The urban heat island (UHI) describes elevated urban temperatures due to heat retained by built structures (e.g. concrete surfaces). Animal behavior may be critical in determining an animal’s ability to thrive in the wake of human disturbance. Yet, we have a relatively poor understanding of how animal behavior is affected by the UHI. We examined sibling cannibalism in urban and desert juvenile black widow spiderling (Latrodectus hesperus) lineages exposed to extreme UHI...
Density of marmosets in highly urbanised areas and the positive effect of arboreous vegetation
01. Februar 2022
Abstract City life is harsh and inhospitable for many animal species, particularly for non-volant mammals that face increased mortality risks in urban settings. Yet, studies on non-volant city mammals are limited and mostly restricted to temperate regions. Here, I evaluated the density and adaptability of the common marmoset (Callithrix jacchus), a species with a series of advantageous pre-adaptations that could facilitate city life, in highly built up urban environments of a tropical city Joao Pessoa (>800,000 people), in NE Brazil. I surveyed a total of 56 streets...
Trade-offs and synergies of ecosystem services in the Yangtze River Delta, China: response to urbanizing variation
01. Februar 2022
Abstract Since entering the ‘Millennium of the cities’ omnipresent rapid urbanization has caused dramatic changes to ecosystem functions and generated huge ecological risks across city catchments. An understanding of how multiple ecosystem services are associated across complex social-ecological systems is required for urban sustainability. However, few studies have explored how the trade-offs and synergies of ecosystem service response to the traits of urbanization processes such as the variation of undeveloped-developed continuum. In this study, we took the...