Une méthode illustrée pour la sectorisation morphodynamique de la rivière Neigette (Québec)

An illustrated methodology for the morphodynamic sectoring of the Neigette River (Québec) Fluvial hydrogeomorphology is little recognized in policy management and planning in Québec. A better understanding would result in more enlightened planning for waterways. The deficiency could result from the fact that too few methodologies have been developed that take account of the particular nature of Québec rivers. This study tests the applicability of a methodology of dividing rivers into homogeneous morphodynamic units. This compartmentalization results from the analysis of longitudinal changes in stream power, sedimentary composition of the banks, channel entrenchment, and planform geometry. The method is tested on a section of the Neigette River, which encompasses a wide variety of forms and processes frequently found in Québec rivers. Results suggest the presence of three morphodynamic sections: wandering with multiple channels, dynamic meandering and stable meandering. The method provides an effective basis for discriminating between these morphodynamic environments and their respective limits. Stream power is the variable with the greatest discriminating capacity. The efficacy of the approach, the ease of its application, and its flexibility make this a valuable tool for the management of fluvial environments.     

Occupation humaine et environnement au 5e et au 4e millénaire sur la côte Sharjah-Umm al-Qaiwain (U.A.E.)

Three contributions in this issue are concerned with sites along the west coast of the United Arab Emirates which pre-date the Bronze Age. In this paper we shall attempt to view these sites in the broader geographical context of the southern Gulf coast; and thereafter to consider (1) the lithic material attested in the Arabian peninsula and dated to between the late 6th and early 4th millennium B.C.; (2) the painted pottery comparable to Mesopotamian Ubaid wares; and (3) a dozen CI4 dates (1) run on shell which all range around 6000-4500 BR The material utilized here comes from a series of expeditions conducted by the French Missions to Sharjah and Umm al-Qaiwain between 1985 and 1990 (2). The objectives of our geomorphological and archaeological inquiries were to observe, within a restricted area, the remains and evolution of human occupation in a changing environment.     

Modélisation spatiale de la pauvretéà Montréal: apport méthodologique de la régression géographiquement pondérée

Spatial Modeling of Poverty in Montréal: Methodological Contribution of the Geographically Weighted Regression
The Island of Montréal is particularly concerned with the issue of poverty. In 2000, 29 percent of its inhabitants lived under the low income cut-offs as defined by Statistics Canada. However, poverty is not a homogeneous phenomenon at the intra-urban scale, and identifying and categorizing spaces of poverty has become a main concern for ongoing researches. According to this way of thinking, this paper proposes an analysis of the factors influencing the geographical distribution of poverty on the Island of Montréal. To be able to identify properly the various profiles of poverty, this analysis uses a specific methodology, the geographically weighted regression (GWR), and compares its results with the ones of a classical regression model. At the global level, the most important factors to explain poverty are in order: unemployment, lone-parent families, one person households, recent immigrants, part time or part year workers, school dropouts. At the local level,