Alfred Crosby,
Ecological Imperialism and the Columbian Exchange, the consequences of discovery and occupation.
Chapters
1, The Columbian Exchange
2, Ecological Imperialism
3, Biological Changes
4, British Empire
5, Infectious Disease
6, Virgin Soil Epidemics
7, God would
9, American crops in Europe
10, Maize and national character
11, Reassessing 1492
12, Life in Space
Chapter summaries from
Crosby’s, Germs, Seeds and Animals.
1. The Columbian Exchange
A. Euro-american blend occurred that was crops to Europe & livestock to the Americas.
B. Three waves of Euro-dominance
- Phase One: initial foothold in Antilles spread to the Americas - 1500s
- encomienda and hacienda systems
- slavery of:
- indigenous enslavement was not a success always
- failed in the Antilles
- was opposed by the Church on the mainland despite Creole support
- African, Negro slavery was a substitute labor and control system
- Phase Two: population explosion / decline - 1600-1820s
- rise of Neo-Britains, Neo Spains, Neo-Franco
- huge export of livestock, grains, people
- European peasant numbers increased
- Neo-Darwinism
- Phase Three: populations experience adaptive radiation - 1880s
- European population, livestock, and food all increased
- Enormous migration of European peasant class to cities and overseas
- Abolition of slavery led to the import of Asian labor in the colonies
- Colonial rivalry in its last manifestation: UK, France, the Netherlands, Germany, Italy, Spain, Japan, and the USA culminating in
- The partition of Africa, China and southeastern Asia :
- World War One, 1914-1918.
- World War Two, 1932 (in China), 1939-1945 and
- The Cold War, 1045-1989, and the ending of European colonialism.
2. Ecological Imperialism
Three ingredients in European success
- weeds colonized entire areas because their was no competition,
- animals and livestock spread, often to the dtriment of native plant foods,
- pathogens (few % of lethal bacteria wiped out indigenous people).
Ecological pyramid, found in any ecosystem
The top of the pyramid represents fewer numbers.
Top level predators = people
CONSUMERS = animals
PRODUCERS = plants
Base = bacteria and pathogens
The base of the pyramid represents greater numbers.
What is an ecosystem, technically speaking?
3. Biological Changes
metamorphosis, the elements of: disease, plants, animals
due to:
isolation
demographic density
fortunate mix of new world plants and old world animals
no predators
4. British Empire
Neo-Britain’s land had favorable climate and benefited from phase two of a European population explosion and a leveling off of indigenous declines.
Unprecedented European population growth doubled every 20 to 40 years
5. Infectious Disease
6. Virgin Soil Epidemics
7. God would punish them.
Europeans often found vacant land, previously cultivated (Va. & Mass.)
They mistakenly blamed “Providence” – God’s will for their success
Indigenous people had no immunity to the epidemic diseases and thus lost their faith in the healing capacity of their “extended family-pow-wow” approach to health.
Europeans were reinforced by their success to think that Christian faith destined them to succeed – laid the foundations for concepts of mission and manifest destiny.
9. American crops in Europe
A simple thesis: during the 1500s and 1600s the vegetable crops of corn, squash, potatoes and beans, to name but a few, caused a rise in European and Asian nutrition levels and fueled and explosion in populations of both humans and their livestock.
by the 1700s and the 1800s, population growth hit record levels in Eurasia and these excess numbers of Europeans and Chinese, or East Indians then migrated to the Americas and founded healthier populations in new colonies among the existing indigenous, or earlier European and African migrants.
10 The American Character.
"maize was lavishly advantageous."
p. 172
"John Winthrop wrote from Connecticut in the 1680s that it [Maize] had been the usual diet of 'first Planters in these Parts,' and was still a common food. A half-century later PeterKalm recorded that while "traveling in America one sees miles of nothing but maize fields."
by 1850: six times the amount of corn than wheat was groown in the US.
"maize was the primary or at least the secondary staple in the diet of a great mass of people. . . ."
p. 173 .
metamorphosis, literally to change shape or take on another shape or form, figuratively the ability to transform beyond recognition.
Crosby
The Future requires that we will have to retreat from the shore, due to melting glaciers, but exactly how far and to what extent we can make the transition is revealed by the difficulties we can see in the Columbian exchange.

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