Transcript Human impact on Ontario (pg. 60 – 63)

Pg. 67 # 1 -4, 8
1. food, fuel, natural resources, water, recreation,
oxygen
2. Three levels of biodiversity: family, community
and world.
3. Extinction is when there are no more living
organisms of that species. Related to biodiversity
because one less organism means there is less
diversity.
4. Overexploitation of a resource:
1. fishing for cod (trawling, ruined the ecosystems at the
bottom)
2. Collecting oil.
Pg. 67 # 1 -4, 8
1. oxygen, food, recreation, wood/trees, water, fuel,
inspiration, (food, water, fuel, carbon dioxide, and oxygen)
2. biodiversity – species, genetic, earth level.
3. Extinction is the loss of a species, related to biodiversity
because when one species is lost, it decreases the
biodiversity. Biodiveristy mean there is a diverse group,
indicating multiple types
4. Overexploitation is when you use resources too quickly and
use them up completely before they replace themselves.
1.
2.
3.
4.
Cod fish in Maritimes. Over fished.
Easter Island – chopped down all tress and overfished.
Aril Sea – water used up, decrease habitat.
Blue fin tuna – overfished.
• Five factors that effect ecosystems are habitat
change, pollution, overexploitation, climate
change, invasive species.
• No pollution or climate change, small amount
of invasive species (rats ate tree seedlings).
• The sustainability was mostly effected by
overexploitation (cut down all trees).
1. 5 factors that effect sustainability are, habitat
change, climate change, overexplotation,
pollution, invasive species.
Did they use all factors? no., not all used.
2. Which ones used? Did not use pollution or
climate change. Habitat change, overexplotation
and invasive species.
Justifying them. (Examples)
- Habitat change – cut down trees
- over explotation – over fished
- invasive species – rats – ate all the tree
seedlings
Infereincing -
Human impact on Ontario
(pg. 60 – 63)
• (bolded terms, subtitles, title, read 1st sentence, prior knowledge, CHUNK
out the text – get the main idea)
• Human activities affect the ecosystem, there are ways to help.
• Freshwater ecosystems – humans activities on the water effect the water
ecosystems. Such as, boat wakes – waves disturb terrestrial and aquatic
ecosystems
• A suburban terrestrial ecosystems – urban sprawl – unplanned,
disorganized development into the countryside. Human developmnet
effects ecosystems all over ontraio, specifically the Niagra Escarpment.
Environmental protection: called Niagara escarpment plan.
• Forest Ecosystems – Clear cutting – process of removing all trees from an
area regardless of size. For example – clearcutting is an issue in most of
Ontario in the Borel forests. Nedd to plant more trees. Destorying
habitats  death of species  decreases diversity. Ontario uses
sustainable clear cutting by adopting measures ensuring companies plant
trees
Pg. 63, #1 – 4
1. Three stressors on freshwater lakes in Ontario
are:
1. . Boats – gas - pollution – fish die
2. .sewage - septic tanks – nitrogen leaks back into
water
2. Urban sprawl affects the Niagara Escarpment in
the following ways:
1. . Habitat change and habitat framentation.
3. Clear cutting is when: all trees get cut down.
4. The major effect of clear cutting on the boreal
forest is….increased animal death, alternated
water, soil degradation.
Video on pollution
Invasive Species:
Non-native species that causes harm to the ecosystem into
which it has been introduced. They outcompete native
species because they do not have natural predators.
Organism
Region
Effects
Dog-strangled
vine
Native to Eurasia
Introduced to North America as a garden
plant
Invaded sunny hillsides and ravines in
southern Ontario
Smoothers small plants, tree seedlings,
small shrubs, and sapling
Affects monarch butterflies
Rats
Easter island
Ate seeds and saplings of young trees
Sparrows and
starlings
Zebbra Mussles
Our compete the eastern bluebird
Lake Erie, Ontario
filtering process (remove alge) starve out
native species
Clog water intake pipes.
Video on Mussles
Read Assessing Impacts
pg. 68 - 71
video