The production of space in metropolitan regions: A Lefebvrian analysis of governance and spatial change

The language of relational geography now permeates the field and literature of planning, with phrases such as 'fuzzy boundaries' and 'flows and networks' being commonly used to express the complexity of socio-economic and governance relations. However, recent research suggests the so-called 'relational turn' is not only far from complete, but is unable to account for the bounded reality of urban processes.Following from these debates, this article seeks to redirect the study of urban change away from relational and absolute interpretations of space in favour of a more robust consideration and critical reflection on the social production of city-regions. Towards this objective, the author introduces an approach situated within Lefebvre's The Production of Space to examine strategies of metropolitan regionalism in the Capital District, New York (United States). Interpreting the city-region as a social product reflecting the co-constitutive relationship of conceived, perceived and lived space spatial elements, the paper argues that the silences of lived space within metropolitan regionalism are indicative of a post-political condition where hegemonic vision, discourse and ideology deny a robust urban democracy. It is this ability to engage with the dynamism of social change and the relationships between spaces which makes Lefebvre's spatial theory immensely valuable for the study of emerging and shifting structures of governance. © The Author(s) 2012

Characterizing perception of ecological risk

35 pagesRelatively little attention has been paid to the role of human perception and judgment in ecological risk management. This paper attempts to characterize perceived ecological risk, using the psychometric paradigm developed in the domain of human health risk perception. The research began by eliciting a set of scale characteristics and risk items (e.g., technologies, actions, events, beliefs) from focus group participants. Participants in the main study were 68 university students who completed a survey instrument that elicited ratings for each of 65 items on 30 characteristic scales and one scale regarding general risk to natural environments. The results are presented in terms of mean responses over individuals for each scale and item combination. Factor analyses show that five factors characterize the judgment data. These have been termed: impact on species, human benefits, impact on humans, avoidability, and knowledge of impacts. The factor results correspond with initial expectations and provide a plausible characterization of judgments regarding ecological risk. Some comparisons of mean responses for selected individual items are also presented

Identification of Bacillus thuringiensis subsp. kurstaki Strain HD1-Like Bacteria from Environmental and Human Samples after Aerial Spraying of Victoria, British Columbia, Canada, with Foray 48B

Aerial applications of Foray 48B, which contains Bacillus thuringiensis strain HD1, were carried out on 9 to 10 May, 19 to 21 May, and 8 to 9 June 1999 to control European gypsy moth (Lymantria dispar) populations in Victoria, British Columbia, Canada. A major assessment of the health impact of B. thuringiensis subsp. kurstaki was conducted by the Office of the Medical Health Officer of the Capital Health Region during this period. Environmental (air and water) and human (nasal swab) samples, collected before and after aerial applications of Foray 48B, both in the spray zone and outside of the spray zone, were analyzed for the presence of strain HD1-like bacteria. Random amplified polymorphic DNA analysis, cry gene-specific PCR, and dot blot DNA hybridization techniques were used to screen over 11,000 isolates of bacteria. We identified bacteria with genetic patterns consistent with those of B. thuringiensis subsp. kurstaki HD1 in 9,102 of 10,659 (85.4%) isolates obtained from the air samples, 13 of 440 (2.9%) isolates obtained from the water samples, and 131 of 171 (76.6%) isolates from the nasal swab samples. These analyses suggest that B. thuringiensis subsp. kurstaki HD1-like bacteria were present both in the environment and in the human population of Victoria prior to aerial applications of Foray 48B. The presence of B. thuringiensis subsp. kurstaki HD1-like bacteria in human nasal passages increased significantly after the application of Foray 48B, both inside and outside the spray zone