2) Past research on environmental perceptions has, for the most part, treated responses as independently distributed across a given study area. However, a random sampling of respondents may not necessarily produce a randomly distributed pattern of views on the natural environment. This study explores the degree to which perceptions of water quality are spatially correlated across two watersheds in San Antonio, Texas. Using spatial analysis techniques, we describe and map the mosaic of perceptions of water quality in Salado and Leon Creeks running through the heart of the metropolitan area. Specifically, we test the degree to which responses are spatially autocorrelated across the watersheds, and then provide explanation as to why clustering of perceptions occurs in specific locations. Results demonstrate that environmental perceptions are in fact spatially dependent across the landscape and that geographic networks of issue-based activism contribute to the formation of localized “hot spots” of similar responses. Finally, we discuss how the results provide direction for more effective approaches to watershed planning and policy.
3) This study seeks to improve understanding of the major factors shaping public
perceptions of air quality by examining the spatial pattern of local risk perception,
the role of socioeconomic characteristics in forming these perceptions, and
the relationship between perceived and scientifically measured air pollution.
First, we map the spatial pattern of local air quality perceptions using Geographic
Information Systems (GIS) across the Dallas and Houston metropolitan areas.
Next, we explain these perceptions through local contextual factors using both
bivariate correlations and multivariate regression analysis. Results indicate
that perceptions of air quality in the study areas are not significantly correlated
with air quality based on readings of air monitoring stations. Instead, perceptions
appear to be influenced by setting (urban versus rural), state identification,
access to information, and socioeconomic characteristics such as age, race,
and political identification. We discuss the implications of the findings and
provide direction on how further research can provide a deeper understanding
of the local contextual factors influencing public perceptions.
Articles:
Brody, S.D., Highfield, W. & Alston,
L. (2004). Does Location Matter? Measuring Environmental Perceptions of Creeks
in Two San Antonio Watersheds. Environment and Behavior 36(2): 229-250.
Brody, S.D., Highfield, W. & Peck, M. (Forthcoming). Exploring the Mosaic
of Perceptions of Water Quality Across Watersheds in San Antonio, TX. Landscape
and Urban Planning.
Brody, S.D., Peck, M. & Highfield, W. (Forthcoming). Examining Localized
Patterns of Air Quality Perceptions in Texas: A Spatial and Statistical Analysis.
Risk Analysis.
Links:
• Institute
of Science, Technology and Public Policy
• Bush
School of Government