Midterm Flashcards
Ten major South American physiographic regions
- Llanos
- Amazonia
- Sertao
- Chaco
- pampas
- Patagonia
- coastal plains
- atacama desert
- Andean mountains
- altiplano
Llanos
- (plains or campos)
- vast stretches of undulating grasslands and savannah
- thinly populated
- reach 700ft ask
- dry and rainy periods (often flooding during rainy)
- cattle ranching
- northern dry Illanos northern Venezuela and southeastern Colombia
reach to their highest elevation along foothills of the Andes - llanos de mojos in NE Bolivia - wet, seasonally inundated savannas
Amazonia (amazon basin)
- mainly tropical rainforests primarily drained by amazon river
- large parts of Brazil, eastern Peru, Bolivia, and Ecuador, SE Venezuela and Colombia; south Guyana, Suriname, and French Guiana
- accounts for almost 1/3 of tropical rainforest
- divided into terra firmer and vareza
Terra firme
A subdivision of the amazon that is an interior, upland, and slightly elevated area meaning firm or solid ground; comprises 98% of Amazonians land mass
Varzea
A subdivision of Amazonia which is a narrow strip of seasonally flooded alluvial plains
- heavy rainfall, soils productive because of flooding, wide spread dispersal of plant and animal species, lush vegetation, and high humidity
- once believed thinly populated seminomadic societies horticulture and hunting and gathering
- now believed economically and politically complex societies were widespread in upland interior before European conquest
- can have permanent agriculture because of soil
Sertao
- Brazilian region severely arid
- bush, backwoods or wasteland
- droughts, famines and poverty
- NE Brazil
Chaco
- arid and very hot tropical savannahs, scrub vegetation, and scattered grasslands SE of Brazilian highlands
- western Paraguay, SE Bolivia, northern Argentina, and western Brazil
- during summer rainy season large parts flooded
- climate, soils, and vegetative cover work against development of large complex societies
- sparsely populated
- oil deposits
Pampas
- almost treeless flat plains and grasslands with a moderate Mediterranean type climate and extraordinarily rich souls
- arc like direction. Around Buenos Airea and part of SW Uruguay
- prior Europeans populated by small scale nomadic societies -> hunting of camelids
- after core of cattle and agricultural industries of Argentina and Uruguay ; cowboy culture
Patagonia
- arid desert like landscape in Central and southeastern Argentina extending in eastern and southeastern direction from pampas to western Andean mountains
- Pryor European colonization sparsely populated
- since European conquest grazing of sheep
- small pockets of irrigated agriculture appear near its three major rivers
Coastal plains
- because direction Pacific Ocean streams western coasts much drier than eastern ones
- perus pacific coast have been sites intensive agriculture, dense settlements, and large complex societies
- aridity decrease from south to north, Ecuador and college Maia characterized by high rainfall and lush vegetation
Attacama desert
- on chiles pacific coast
- one of driest places on earth - years without any rain
- copper deposits
- nitrate deposits
Andean Mountains
- highest mountain ranges of western alpine system present in chile, Bolivia, and Peru
- many 18,000-20,00ft ask
- intensive, irrigated agriculture &a large highly complex state level societies (ex Incas)
Altiplano
Between eastern and western branches of Andes and entirely in Bolivia
- high, semi arid plateau, virtually deployed of trees
- bordered by Lake Titicaca
- prior European conquest, was center of large scale Aymara speaking chiefdoms -> intensive irrigated agriculture and pastoralist revolved around native South American camelids
Mexico physiographic regions
- central plateau
- southern highlands
- gulf coastal plains: gulf region
- yucatan peninsula
Central plateau
- 3000-7000ft asl
- volcanic basins & ringed by two mountain ranges (western and eastern Sienna Madre)
- northernmost section = mesa del Norte - arid and hot, populated by nomadic people resisted Aztec rule
- south more humid and cooler region = mesa Central
- Aztec capital
Southern highlands
- rugged and volcanic area, interspersed by deep valleys with rich soils
- historically centre of intensive high yielding agriculture & large densely settled highly complex societies
- best soils
- part of neovolcanic range of Eje volcanico
- Maya culture in southern Mexico & Central Guatemalan range of regions
- thee broad climatic zones: the Tierra Templada, Tierra fria, and Tierra caliente (with diff elevations)
Gulf coastal plains/ gulf region
- include stretches of tropical forest terrain and low lying coastal plains facing Caribbean Sea, Gulf of Mexico, and the Atlantic Ocean, extending from central Mexico through most Central America.
- gulf region- north and northeastern lowlands :
- humid, rainfall, predominantly tropical rainforest
- Maya
Yucatan peninsula
- northernmost is flat, arid plain scrub first
- humidity increases southwards –> change to tropical forest
- southern part Maya
Physiographic regions in Central America
- Central American volcanic axis
- coastal plains
Central American volcanic axis
- massive string of volcanic ranges, plateaus, and valleys that make up the greater part of Central America
Coastal plains
- facing the pacific, the coastal plains are narrow and relatively arid, in Caribbean wider and more humid
Caribbean physiographic regions
- interior mountain ranges
- coastal plains
Interior mountain ranges
- cordilleras
- prolongation of western alpine system
- moment European co equestrian small scale sedimentary societies practice horticulture and intensive agriculture, coastal maritime resources
Caribbean coastal plains
- after conquest sugar plantations