Application of Landsat satellite imagery to monitor land‐cover changes at the Athabasca Oil Sands,Alberta, Canada

A major advantage of satellite remote sensing is that the imagery acquired provides a synoptic view of the landscape. Thus, repeat coverage by the satellite on a regular basis permits the detection of changes in land‐cover over time. This study demonstrates the application of remote sensing technology to the monitoring of mining activities at the Athabasca Oil Sands region of Alberta, Canada. First, we describe the techniques used to match a time sequence of Landsat imagery, both spatially and spectrally, to ensure that the spectral changes through time are due to land‐cover variations. A series of spectral trajectories were then extracted to assess changes in land‐cover through time. Secondly, a land‐cover classification was produced from the baseline 1984 imagery and, using historic and future mine extents, the classification was analyzed to determine the proportion of each land‐cover type affected through development. Results of the analysis indicate that since 1984 there has been a larger reduction in mixedwood dense and broadleaf vegetation classes than mixedwood sparse or dense conifer stands in the area. Based on the delineations of mine‐site activity, the area of woodland and wetland habitat subject to development has increased from approximately 2,520 hectare (ha) in 1984 to 32,930 ha in 2005.     

Indifference towards national identity: what young adults think about being English and British*

ABSTRACT. National identity should be sharply distinguished from nationalism. People speak by reference to a general and assumed membership of a country, and routine markers of behaviour and style may exhibit this sense of membership. This matter‐of‐fact acceptance of ‘national’ membership does not guarantee enthusiasm for the ‘nation’ and it cannot be taken as a signal of nationalism, banal or otherwise. While theoretical statements and assumptions often suggest that national identity is fundamental to individuals in contemporary societies, empirical investigation of people talking about national identity uncovers some broad strands of indifference and hostility towards national identity in general, and towards British and English identities in particular. This may reflect young adults' wish not to appear ‘nationalist’ just as many would wish not to appear racist. But the level of apathy and antagonism towards national identity among young adults suggests that we ought to reconsider any assumption that national identity is ‘normally’ a powerful and important marker, embraced with enthusiasm.     

City networks: breaking gridlocks or forging (new) lock‐ins?

There is today a global recognition that we live in an ‘urban age’ of near‐planetary urbanization where cities are at the forefront of all sorts of agendas. Yet little attention is offered to the active role of cities as political drivers of the urban age. There might today be more than two hundred ‘city networks’ globally, with thousands of para‐diplomatic connections actively defining relations between cities, international organization and corporate actors. This actively networked texture of the urban age shapes all areas of policy and, not least, international relations, and holds much promise as to possible urban solutions to global challenges. Based on an overview of a representative subset of this mass of city‐to‐city cooperation (n=170), this article illustrates the landscape of city networking, its issue areas and institutional shapes, and its critical features. As we argue, city networks today are faced by a crucial challenge: while trying to overcome state‐centric ‘gridlocks’ cities are, at the same time, building both political–economic as well as very material ‘lock‐ins’. We need to pay serious attention to this impact of city diplomacy in international affairs, developing a greater appreciation of the path dependencies and responsibilities this diplomatic activity purports.