© T. M. Whitmore Today’s Topics Scope, methods, maps in Geography Diversity & Commonality in Latin America Latin American Physical Geography Physical Regions: Northern Mexican Drylands
© T. M. Whitmore What is Geography? Characteristics of places and the connections between them - this implies 4 basic questions: Where are things? Geography is a study that prioritizes location How places and peoples therein are similar and different ? Why are they similar or different? Why do we care?
© T. M. Whitmore Methods in Geography What are the characteristics of places? Location and situationsituation Spatial organization of phenomena and patterns patterns How phenomena are interconnectedinterconnected Human use & cultural landscapes Human usecultural landscapes Role of maps analytically general vs thematic or data general thematic Organization of characteristics into regions for simplicity
Havana
© T. M. Whitmore
Latin America Diversity I Great size, especially N-SN-S Topographic (land forms and elevation) Topographic In many places diversity is very close spatially - many LA countries are quite diverse Biotic - from deserts to tropical rainforests... Biotic
© T. M. Whitmore Latin America Diversity II Geographic diversity Economic diversity Pre-Columbian cultural diversity Amerindian cultures from empires to hunting-gathering bands Diverse experiences after the end of colonization Diverse immigration experience and resulting population patterns
© T. M. Whitmore Commonality: Similar historical and cultural experience - unites Roughly similar economic experience of Iberian colonialism Broadly similar language, religion, cultural values (but with important exceptions)language Common physical environmental regions overlap multiple countries
© T. M. Whitmore Latin American “layer” cake Multiple physical environments Constraints & opportunities for human use Successive periods of influence Pre-Colombian (before 1492) Colonial (roughly ) Post-colonial or Neo-colonial (roughly 1820s ) Contemporary (20 th & 21 st C)
© T. M. Whitmore
Environment in Latin America Climate (long term norms of weather) - temperature, precipitation, seasonality, etc. Natural vegetation - tricky due to elevations, human modification, etc. Soils - very much variation but with broad patterns Land forms and elevation - the latter is very important Whitmore’s simplified environmental sub- regions of Latin America are a composite of above
© T. M. Whitmore Middle America Environmental Zones
© T. M. Whitmore Environmental Sub-region I Northern Mexican drylands Mexico ~ North of tropic of Cancer Climate - desert and steppe climate Climate Koppen “dry” or “B” climates: Bw & Bs Very little precipitation (vs Raleigh) Wide seasonal temp swings Vegetation: mostly arid adapted (except at elevation) Soils - quite variable
© T. M. Whitmore Northern Mexican Dry lands Sierra Madre Oriental Sierra Madre Occidental
© T. M. Whitmore
Climate: Northern Mexican drylands Climographs (e.g., compare with Raleigh) Raleigh Very little precipitation Dry And drier! Wide seasonal temp swings Examples
© T. M. Whitmore Chihuahua Parker
© T. M. Whitmore Northern Mexican drylands Vegetation: mostly arid adapted Grasslands (Bs) Open ground, brush, cacti, etc. (Bw) Conifers at elevation Soils - quite variable Mountain and plateau land forms Sierra Madre (Oriental & Occidental)
© T. M. Whitmore NASA World Wind Landsat 7 visible band
© T. M. Whitmore
1: Sierra Madre Occidental from Chihuahua © T. M. Whitmore
2: Sierra Madre Occidental: Copper Canyon © T. M. Whitmore
3: Nopal (cactus)
© T. M. Whitmore 4: Sierra Madre Occidental (Sonora) © T. M. Whitmore
5: Coastal Plain looking E towards Sierra Madre Occidental © T. M. Whitmore
6: Sierra Madre Oriental (Coahuila- Nuevo Leon) © T. M. Whitmore
Environmental Sub-region II Mesoamerican highlands Mesoamerican highlands Tectonic forces Tectonic Land forms - very complex Land forms Soils – micro-variability
© T. M. Whitmore Environmental Sub-regions II Middle American highlands Climate - role of the “tropics” and elevation elevation Tropical seasonality of rainfall (summer) Example: Mexico City rainfall Example: Mexico City Summer (high sun) rains Seasonal drought
© T. M. Whitmore Environmental Sub-region II Middle American highlands Vegetation types vary with elevation: grassland, oak forests, pines All highly modified by humans Landscapes
© T. M. Whitmore Middle America & Caribbean Environmental Zones Tropic of Cancer
© T. M. Whitmore
NASA World Wind Orizaba 18,405 ft 5,610 m
Orizaba 18,405 ft 5,610 m
Transverse volcanic range
© T. M. Whitmore Xochicalco, Mexico
© T. M. Whitmore Highland Chiapas, Mexico
© T. M. Whitmore Black soils near Xela, Guatemala
© T. M. Whitmore Hill-side fields near Xela, Guatemala
© T. M. Whitmore L. Atitlán, Guatemala
© T. M. Whitmore Volcano near Antigua, Guatemala
Mexico City