Regulation by territorialization: the political ecology of conservation and development territories

Introduction Under the banners of environmental conservation, food security, and sustainable development, a diverse group of public and private actors is busily dividing the global South into conservation and development territories at a variety of scales. Multiple goals and processes drive these spatial strategies to reconfigure resource access, control, and management. The production of territory to regulate populations and resources has a long tradition (Elden, 2013; Sack, 1986; Scott, 199..

Bibliographie

Cette bibliographie est proposée par les coordinateurs du dossier en complément de la liste des notices bibliographiques BGI. Adams W., Hutton J., 2007. People, Parks and Poverty: Political Ecology and Biodiversity Conservation. Conservation & Society, 5(2), p. 147-183 p. Adger W. N., Benjaminsen T. A., Brown K. et Svarstad H., 2001. Advancing a political ecology of global environmental discourses. Development and Change, 32 (4), p. 681-715. Agrawal A., 2005. Environmentality: Technologies of..

Engaging Students Engaging Industry Engaging Enterprise

A reflective piece on how a small team of students and academics gained more awareness of their own sense of enterprise and creativity. The case study examines the phases and crisis points of the whole event process and identifies some of the key learning outcomes for all involved

Territorialisation et pouvoir : la Political Ecology des territoires de conservation et de développement

Introduction Au nom de la conservation environnementale, de la sécurité alimentaire et du développement durable, un groupe diversifié d’acteurs public et privés s’affairent à diviser les Suds en territoires de conservation et de développement à différentes échelles. Plusieurs objectifs et processus conduisent ces stratégies spatiales à reconfigurer l’accès aux ressources, leur contrôle et leur gestion. La production de territoire pour contrôler les populations et les ressources est une pratiq..

Plant invasions, generalist herbivores, and novel defense weapons

One commonly accepted mechanism for biological invasions is that species, after introduction to a new region, leave behind their natural enemies and therefore increase in distribution and abundance. However, which enemies are escaped remains unclear. Escape from specialist invertebrate herbivores has been examined in detail, but despite the profound effects of generalist herbivores in natural communities their potential to control invasive species is poorly understood. We carried out parallel laboratory feeding bioassays with generalist invertebrate herbivores from the native (Europe) and from the introduced (North America) range using native and nonnative tetraploid populations of the invasive spotted knapweed, Centaurea stoebe. We found that the growth of North American generalist herbivores was far lower when feeding on C. stoebe than the growth of European generalists. In contrast, North American and European generalists grew equally well on European and North American tetraploid C. stoebe plants, lending no support for an evolutionary change in resistance of North American tetraploid C. stoebe populations against generalist herbivores. These results suggest that biogeographical differences in the response of generalist herbivores to novel plant species have the potential to affect plant invasions

Temperature-dependent 2D-3D growth transition of ultra-thin Pt films deposited by PLD

During the growth of metal thin films on dielectric substrates at a given deposition temperature T, the film's morphology is conditioned by the magnitude and asymmetry of up- and downhill diffusion. Any severe change of this mechanism leads to a growth instability, which induces an alteration of the thin film morphology. In order to study this mechanism, ultra-thin Pt films were deposited via pulsed laser deposition (PLD) onto yttria-stabilized-zirconia single crystals at different deposition temperatures. The morphological evolution of Pt thin films has been investigated by means of scanning electron microscopy (SEM), atomic force microscopy (AFM) and standard image analysis techniques. The experimentally obtained morphologies are compared to simulated thin film structures resulting from a two-dimensional kinetic Monte Carlo (KMC) approach. Two main observations have been made: i) Thin Pt films deposited onto zirconia undergo a growth transition from two-dimensional to three-dimensional growth at T > 573 K. The growth transition and related morphological changes are a function of the deposition temperature. ii) A critical cluster size of i\ast = 4 in combination with an asymmetric Ehrlich-Schwoebel (ES) barrier favoring the uphill diffusion of atoms allows for a computational reproduction of the experimentally obtained film morphologies.Comment: 7 pages, 6 figures, 1 tabl