Basics of Canadian Environmental History Flashcards
What is Historiography?
The study of how stories in the past have changed over time.
shifts with new evidence, ways of analyzing, theories values and beliefs
what are the 3 overlaping clusters of Environmental history?
Nature - the earth
Social/economiic - how we use/abuse it
Thought - making connections (industrial revolution = polution)
what is ecological Grief?
Trauma associated with the potential distruction of earth
Survival in a Garason
a shift on the view of the environment as dangerous & harsh to a place where we can extract resources, settle, and learn from.
What is the Pleistocene Epoch?
2.9 million years ago, there were 8 major glacial cycles
What was the Holocene Epoch?
Ended the wisconsin ice age (little ice age)
growth of human movement and survival
more moderate temperatures
Anthropocene Epoch
started in the 1950’s, age of man, nucular, bones, emissions.
how does ice thaw?
due to shifting ocean currents & the earth tilting in relation to the sun. called Milankovitch cycles
Succession
when uninhabited landscapes are recolonized with life. this happened when the ice melted in NA
What were the Megafauna?
what happened to them?
massive animals of north america - mass extinction
2 theories of extinction
- overkill hypothesis
- when humans came to NA, they killed them all off. big and slow, warm climates, easy to hunt
Problems: limited evidence of humans being mobile. - Cliamate change hypothesis
- younger drias - colder temperatures, decline in megafauna, less food, reproduction, scarcer ecosystems
Problems: there were animal declines in austrailia, not cased by climate change.
animals seemed healthy - mammoth tusks tested
they went extinct around the time humans showed up
what was the Pre colonial Era?
between the little iceage and christopher columbus in 1492
What were the 2 main glaciers in Canada?
Laurntide and cordilleran, started to melt 6000 years ago.
through temperature changes, emerged an open path between them where people traveled through
Who were the Paleo Indians?
mobile bands who hunted megafauna
hunter + gatherers.
when the megafauna died, they were forced to find other food sources, turned to aggreculte and settlement.