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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • Arkansas ; Economie ; Etats-Unis ; Géographie de l'Amérique ; Missouri ; Ozark Plateau ; Tourisme ; West North Central States ; West South Central States
  • Agriculture commerciale ; Agro-industrie ; Corn belt ; Céréale ; Diversification ; East North central states ; Etats-Unis ; Exploitation agricole ; Géographie de l'Amérique ; Illinois ; Indiana ; Missouri ; Ohio ; Paysage rural ; West North central
  • states
  • Stratigraphy and correlation of the glacial deposits of the Des Moines and James lobes and adjacent areas in North Dakota, South Dakota, Minnesota, and Iowa in Quaternary glaciations in the Northern Hemisphere.
  • Etats-Unis ; Glaciaire ; Géographie de l'Amérique ; Quaternaire zones moyennes ; Stratigraphie ; West North Central States
  • Reservations Indians in the United States Pacific North-West
  • Ecologie humaine ; Economie ; Economie coopérative ; Etats-Unis ; Géographie de l'Amérique ; Indiens ; Industrie du bois ; Oregon ; Pacific North-West ; Pacific States ; Pêche ; Réserve indienne ; Société ; Tourisme ; Tribus confédérées ; Washington
  • State
  • Etude historique et économique des sociétés indiennes de la réserve du Pacific North-West. Les tribus fédérées ont organisé une économie coopérative, fondée sur la pêche, l'industrie du bois et le tourisme, qui leur assure un niveau de vie supérieur
  • The omar story : the role of omars in assessing glacial history of west-central North America
  • Canada ; Erratic boulder ; Geomorphological map ; Glacial features ; North America ; Palaeozoic ; Pleistocene ; Quaternary ; Sedimentary ; United States of America
  • Datation radiocarbone ; Etats-Unis ; Fluviatile ; Géographie de l'Amérique ; Géomorphogenèse ; Missouri ; Pomme de Terre River, vallée ; Quaternaire ; Quaternaire zones moyennes ; Terrasse ; West North Central States
  • Paleoenvironmental and geoarchaeologic implications of late Quaternary sediments and paleosols : north-central to southwestern San Juan Basin, New Mexico
  • Aeolian features ; Alluvium ; Archaeology ; Archeological site ; C 14 dating ; New Mexico ; Palaeo-environment ; Palaeosol ; Quaternary ; Sand ; United States of America
  • Soil/sediment relationships from the West Fork of Gallegos Canyon near Farmington, to the Manuelito Plateau northwest of Gallup, provide insight into the Late Pleistocene and Holocene history of the north-central to southwestern San Juan Basin. Soil
  • Environmental significance of C 13/C 12 and O 18/O 16 ratios of modern land-snail shells from the southern great plains of North America
  • Biogeochemistry ; Carbon ; Isotope analysis ; Mollusca ; New Mexico ; Oklahoma ; Oxygen 18 ; Palaeo-ecology ; Palaeo-environment ; Palaeoclimate ; Quaternary ; United States of America
  • The AA. present measurements of variations in the carbon and oxygen isotope compositions of shells of modern land snails from the southern Great Plains of North America : 12 localities in a narrow east-west corridor that extend from the Flint Hills
  • in North Central Oklahoma to the foothills of the Sangre de Cristo Mountains in Northern New Mexico, USA. The data are discussed in terms of their relationship to modern environmental variables to examine the likelihood that isotopic data from ancient land
  • Consommation ; East North Central States ; Economies d'énergie ; Energie ; Etats-Unis ; Géographie humaine ; Logement ; Maison individuelle ; Usage domestique ; West North Central States
  • Carte isochrone ; Etats-Unis ; Géographie physique ; Holocène ; Middle West ; North Central States ; Palynologie ; Paléoclimatologie ; Paléoprécipitation ; Paléotempérature ; Quaternaire zones moyennes ; Régression multiple ; Variation climatique
  • than 80 % of its modern values over parts of Wisconsin and Minnesota. After 6000 yr BP precipitation generally increased, while mean July temperature decreased in the north, and increased in the south. The time of the maximum temperature varies within
  • the Midwest and is earlier in the north and later in the south.
  • The physical geography of medium-sized rivers, focusing on the Southeastern and South-Central United States. Part II
  • Biogeographic distributions of selected North American grassland plant species
  • Biogeography ; Grassland ; Model ; North America ; Plant species ; Precipitation ; Spatial distribution ; Temperature
  • and the centroid of the ranges. Conservation of tallgrass, mixed-grass, and shortgrass prairie biomes will require a flexible strategy with widely distributed habitat over the Great Plains along both north-south and east-west gradients.
  • The AA. examined the spatial distributions of 30 abundant plant species of the grasslands of North America distributed among 4 functional groups : C4 grasses, C3 grasses, forbs, and woody species. For each species, they mapped its distribution using
  • [b1] Dep. of Geography, Kansas State Univ., Manhattan, Etats-Unis
  • [b2] Div. of Biology, Kansas State Univ., Manhattan, Etats-Unis
  • Argile ; Badlands ; Dynamique de versant ; Etats-Unis ; Géographie de l'Amérique ; Géomorphodynamique ; Géomorphologie climatique ; South Dakota ; Topoclimat ; Versant ; West North Central States ; White River
  • Agriculture ; Culture intensive ; Distance du marché ; Etats-Unis ; Great Plains ; Géographie humaine ; Innovation technique agricole ; Modèle ; Régression multiple ; Théorie ; Von Thünen ; West North Central States
  • The mountain West: interpreting the folk landscape
  • Civilization ; Cultural landscape ; Cultural studies ; Ethnic community ; Innovation ; Rural house ; Rural landscape ; United States of America ; Western United States
  • Wooden constructions - dwellings, outbuildings, fences and hay stackers are discussed and mapped for Western North America including Alaska and Canada. Major centers of innovation are identified in southwestern Montana, Mormon Utah, Hispanic New
  • Mexico and the eastern Sacramento Valley. The West is seen as a bewildering assemblage of unique places in which continuity, innovation and ethnicity have all shaped this diversity. The culture of the American West is not monolithic as has so often been
  • Social needs, political representation and federal outlays in the East North Central United States of America
  • Agriculture ; East North Central States ; Economie régionale ; Education ; Etats-Unis ; Finance ; Finances publiques ; Géographie de l'Amérique ; Géographie politique ; Géographie sociale ; Santé
  • Reversed-polarity glacial sediments and revised glacial chronology, West Branch Susquehana River Valley, central Pennsylvania
  • Geochronology ; Glacial features ; Glaciation ; Glaciolacustrine ; Lacustrine sediment ; Palaeogeography ; Palaeomagnetism ; Pennsylvania ; Quaternary ; United States of America
  • The reversed remanent magnetic polarity of glacial and glaciolacustrine sediments at Antes Fort allows for revision of the chronology of pre-Wisconsinan glaciation in central Pennsylvania.
  • Grassroots-based watershed conservation in Central Appalachia
  • Appalachian Mountains ; Association ; Environment ; Environmental conservation ; Land management ; United States of America ; Water management ; Watershed ; West Virginia
  • Aménagement foncier ; Appalachian Mountains ; Association ; Bassin-versant ; Environnement ; Etats-Unis ; Gestion de l'eau ; Protection de l'environnement ; West Virginia
  • Author discusses watershed conservation measures in West Virginia, which has 32 catchment areas. Each watershed is evaluated officially for a number of factors every five years. In addition, there are 90 grass-roots watershed associations that deal
  • with nonpoint polllution, sewage, water quantity, and land management and other issues. A case study of the watershed association in Knapps Creek, West Virginia is presented. - (SLD)
  • The mountainous West: explorations in historical geography
  • Historical geography ; Mountain ; Natural environment ; Resource management ; United States of America
  • Fourteen essays by North American geographers organized around the themes of barriers, islands of moisture, zones of concentrated resources, areas of governmental control, restorative sanctuary, and the mountain-valley interface. All essays deal
  • Spatial coherence and decay of wind speed and power in the north-central United States
  • Annual variation ; Climatology ; Interannual variability ; Methodology ; Spatial analysis ; Spatial autocorrelation ; United States of America ; Wind ; Wind speed
  • Hourly wind data from a network of climate stations in the north-central United States (drawn from the states of Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota, and Wisconsin) are analyzed to evaluate the efficacy
  • Influence of terrestrial vegetation on sediment-forming processes in kettle lakes of west-central Minnesota
  • C14 dating ; Evapotranspiration ; Lake level ; Minnesota ; Paleo-environment ; Palynology ; Pollen diagram ; Sedimentology ; United States ; Vegetation
  • The composition, magnetic characteristics, and pollen content of sediments from two small kettle lakes near the prairie-forest border in west-central Minnesota were used to infer changes in terrestrial vegetation, shoreline erosion, eolian inputs