The influence of urban heat islands and socioeconomic factors on the spatial distribution of Aedes aegypti larval habitats

  • Thiago S. de Azevedo | azevedots@gmail.com Department of Epidemiology, Faculty of Public Health, University of São Paulo, Brazil.
  • Brian Patrick Bourke Department of Epidemiology, Faculty of Public Health, University of São Paulo, Brazil.
  • Rafael Piovezan Department of Zoology, São Paulo State University (Unesp), Rio Claro, São Paulo, Brazil.
  • Maria Anice M. Sallum Department of Epidemiology, Faculty of Public Health, University of São Paulo, Brazil.

Abstract

We addressed the potential associations among the temporal and spatial distribution of larval habitats of Aedes (Stegomyia) aegypti, the presence of urban heat islands and socioeconomic factors. Data on larval habitats were collected in Santa Bárbara d’Oeste, São Paulo, Brazil, from 2004 to 2006, and spatial and temporal variations were analysed using a wavelet-based approach. We quantified urban heat islands by calculating surface temperatures using the results of wavelet analyses and grey level transformation from Thematic Mapper images (Landsat 5). Ae. aegypti larval habitats were geo-referenced corresponding to the wavelet analyses to test the potential association between geographical distribution of habitats and surface temperature. In an inhomogeneous spatial point process, we estimated the frequency of occurrence of larval habitats in relation to temperature. The São Paulo State Social Vulnerability Index in the municipality of Santa Barbára d’Oeste was used to test the potential association between presence of larval habitats and social vulnerability. We found abundant Ae. aegypti larval habitats in areas of higher surface temperature and social vulnerability and fewer larval habitats in areas with lower surface temperature and social vulnerability.

Dimensions

Altmetric

PlumX Metrics

Downloads

Download data is not yet available.
Published
2018-05-08
Info
Issue
Section
Original Articles
Keywords:
Aedes aegypti, Urban heat island, Spatial analysis, Wavelets, Social Vulnerability Index, Brazil.
Statistics
  • Abstract views: 1377

  • PDF: 545
  • HTML: 404
How to Cite
de Azevedo, T. S., Bourke, B. P., Piovezan, R., & Sallum, M. A. M. (2018). The influence of urban heat islands and socioeconomic factors on the spatial distribution of Aedes aegypti larval habitats. Geospatial Health, 13(1). https://doi.org/10.4081/gh.2018.623