GEOG 204 GLOBAL ENVIRONMENTAL ISSUES
AND ECOLOGICAL JUSTICE STUDY GUIDE
NOTES SOLUTION 2023 (CONCORDIA
UNIVERSITY)
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Unit 1 - Carolynne
ECOLOGY is the study of how living things interact with each other and the environment
Biotic factors vs. abiotic factors:
Biotic (bio meaning living) plants, bacteria
Abiotic (“A” meaning not living) temperature, air, sunlight
Scales of an ecosystem
1. Basic scale, an individual (one elephant)
2. Second scale, a population (all the elephants that live in an area)
3. Third scale, a community (all the elephants and the other animals living in the samearea,
including vegetation
4. Fourth scale, an ecosystem (all the living things in an area, as well as the abiotic
factors (rocks, water). Biotic factors affect abiotic factors & vice versa5.Fifth
scale, biosphere such as earth in its entirety
Introduced species/native species
Introduced species: (exotic species) any species that through activities of human istransferred to its
new habitat
Native species: grown/born in their natural habitat
invasive species are…
introduced species who take over and environment at the expense of native species. Not all
introducedspecies are invasive. Invasive species decrease the ecosystem function
Anthropocene
The Anthropocene defines earth’s most recent geologic time period as being human-influenced, or
anthropogenic, based on overwhelming global evidence that atmospheric, geologic, hydrologic,
biospheric and other earth system processes are now altered by humans. Anthropo meaning
human,cene meaning a certain “epoch” in geologic time. It is established as a new period either
after or within the Holocene, the current epoch, which began 10 000 years ago when the glaciers
melted.
9 planetary boundaries
1. Climate change
- Recent evidence suggests that the Earth, now passing 390 ppmv CO2 in the
atmosphere, has already transgressed the planetary boundary and is
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approaching
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