Search results for "Urbanization"
showing 10 items of 150 documents
Method optimization to measure polybrominated diphenyl ether (PBDE) concentrations in soils of Bratislava, Slovakia.
2010
We modified an analytical method to determine polybrominated diphenyl ethers (PBDEs) in urban soils of Bratislava (Slovakia). Gel permeation chromatography (GPC) introduced as a clean-up step for soil extracts substantially reduced matrix enhancements when PBDEs were measured with gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS). The resulting method proved to be accurate, precise, and showed low detection limits. The sum of 15 PBDE concentrations in surface horizons of Bratislava soils ranged from 87 to 627 pg g(-1). PBDE concentrations were mostly higher in surface than deeper horizons probably because of atmospheric deposition and lack of substantial vertical…
Mitigation of urban flooding: A simplified approach for distributed stormwater management practices selection and planning
2005
The urbanization process and the hydraulic insufficiency of drainage systems are two of the most common causes of urban flooding. In some technical regulations, distributed stormwater management practices (DSMPs) are regarded as a solution for urban flooding problems. They can prevent the formation of runoff, dispose of it locally, or dampen its peak before it reaches the drainage system. Due to their diffuse localization and the wide number of available solutions, the evaluation of their efficiency in terms of flood reduction is very difficult. The methodology proposed in the present paper relies on the concept that the mitigation effects of DSMPs can be expressed as a function of the chan…
Biogeographical comparison of winter bird assemblages in urban environments in Finland
1996
We studied biogeographical variation of urban bird assemblages in Finland. Winter birds were censused by single-visit study plot method from thirty-one centres of villages or towns along 950 km latitudinal extent. A total twenty-eight bird species was observed and the average density was 61.2 ind./10 ha. The number of dominant species in study areas varied between two and seven and their proportion of the whole assemblage was over 70%. Species richness, but not the density of birds, decreased northwards in pooled data. Higher species richness in south than in north was mainly due to the higher amount of delayed migratory birds (e.g. waterbirds, finches) and southerly distributed bird specie…
Urban landscape selection by Eurasian collared dove (<i>Streptopelia decaocto</i>) in eastern Spain
2020
The Eurasian collared dove (Streptopelia decaocto) is an invader species, and its distribution is continuously on the increase. Today its expansion has spread to the American continent. In this study we describe the effects of the urban environment on the Eurasian collared dove in eastern Spain. The abundance and presence of this dove were analyzed in 46 localities using counting points. Overall, 220-point counts were surveyed between autumn 2015 and late-winter 2016. A hierarchical partitioning analysis was used to identify explanatory variables of different types such as resources, climate and urban structure, and human presence, which may influence the presence and abundance of this spec…
LA GEOMETRIE FRACTALE - UN NOUVEL OUTIL POUR EVALUER LE ROLE DE LA MORPHOLOGIE DES RESEAUX DE TRANSPORT PUBLIC DANS L'ORGANISATION SPATIALE DES AGGLO…
1998
National audience
Environmental mitigation hierarchy and biodiversity offsets revisited through habitat connectivity modelling.
2020
International audience; Biodiversity loss is accelerating because of unceasing human activity and land clearing for development projects (urbanisation, transport infrastructure, mining and quarrying …). Environmental policy-makers and managers in different countries worldwide have proposed the mitigation hierarchy to ensure the goal of “no net loss (NNL) of biodiversity” and have included this principle in environmental impact assessment processes. However, spatial configuration is hardly ever taken into account in the mitigation hierarchy even though it would greatly benefit from recent developments in habitat connectivity modelling incorporating landscape graphs. Meanwhile, national, Euro…
URBAN PLANNING - NEW THEORETICS APPROACHES
2012
Cities as well as their neighborhoods undergoes a continous changing process, as an effect of economic, politic evolutions and of the social structure criteria change. The new city aim is to ensure continuity in the cycle of human activities, respectively among housing, jobs, recreation. In the period of economic crisis, cities can have a key role, by exploit of their innovative and integrativ potential, may open up new opportunities for implementing structural reforms and for faster adapting to the economic and social realities in change. The study refers to the new outlook of the urbanism concept determined by the economic and political evolution of society and it make reference to some m…
Re-Thinking the global cosmopolis : an analysis of the un-habitat “city we need” policies in Helsinki And Sydney
2022
This paper contributes to the sustainability debates concerning the UN Habitat III agenda for 2030 of “leaving no one behind.” I mainly focus on how the ideas of the classical cosmopolis are manifested in contemporary urban policies and strategies. I seek to discuss the similarities between the ancient Greek Cynics’ and Stoics’ concept of cosmopolis and the one more or less explicitly expressed in the UN-Habitat manifesto The City We Need 2.0: Towards a New Urban Paradigm, for explaining/showing/understanding. I do so by examining specific case examples based on the UN-Habitat manifesto: the City of Sydney (A City for All: Towards a Socially Just and Resilient Sydney) and the City of Helsin…
Policies of Resilience in the New Institutional Process. The Case-Studies of Palermo and Siracusa in the South of Italy
2015
At the end of 2012, the PON METRO National Scheme was set up in Italy, inspired by the EU Urban Agenda. It also allows towns like Palermo to test and reach targets of urban resilience, focusing on mobility and sustainable energy in order to improve life in the cities together with innovative policies of social inclusion. Other medium-sized cities also tried to face the problem of urban resilience without using national funds. The city of Siracusa, for example, made use of EU direct co-financing schemes. This paper aims to analyse the planning projects and measures adopted in Sicily over the past few years in order to examine government approaches focusing on resilience or those that are som…
Environmental risk factors and cardiovascular diseases: a comprehensive expert review.
2021
Abstract Non-communicable diseases (NCDs) are fatal for more than 38 million people each year and are thus the main contributors to the global burden of disease accounting for 70% of mortality. The majority of these deaths are caused by cardiovascular disease (CVD). The risk of NCDs is strongly associated with exposure to environmental stressors such as pollutants in the air, noise exposure, artificial light at night, and climate change, including heat extremes, desert storms, and wildfires. In addition to the traditional risk factors for CVD such as diabetes, arterial hypertension, smoking, hypercholesterolaemia, and genetic predisposition, there is a growing body of evidence showing that …