Hydrosphere Unit 2 Flashcards
What does Phosphorus and Triclosan have in common?
Both chemicals that contaminate water and can cause problems for sea life and humans
Define Keystone Species
Give 1 example
Keystone species are species that play a crucial role in supporting an ecosystem
Define Invasive Species
Give 1 example
A type of species that are invading someone else’s habitat
Pros and Cons for Aquaculture
3 reasons for each
Pros: Stable jobs Revitalize towns Abundance of fish Cons: Fish can get diseases Fish unhealthier Can't reproduce naturally
What is the purpose of Fish Hatcheries and what do they do?
The are made to protect the fish from extinction and overfishing
They grow the fish and release them into their natural environment after they reproduce
What kind of species are salmon?
Keystone Species
What are some of the causes of salmon habitat loss?
Give three reasons
Global warming
Dams
Clearcutting
Why is clearcutting resulting in Salmon habitat loss?
Clear cutting removes trees that the salmon use as shade for resting
Why do dams result in salmon habitat loss?
They block the salmon from their spawning grounds and creates an obstacle for them
Why does global warming result in salmon habitat loss?
The heat warms the water and can result in the salmon dying of heart attacks
Define Clear-Cutting
A cheap and fast method of logging that remove trees resulting in bare land
Define spawning
The process in which eggs are being deposited directly into the water
How long is a salmon’s journey?
8 years
What are some ways that fish farms decrease the salmon population?
Spreading diseases to the fish
Easy for parasites to latch on
Up to 1 million fish/container
What can we do to increase salmon population?
Get rid of dams
Put more nutrients in the water
Straighten rivers
What do Sea Lice, Sea Lamprey and Zebra Mussels have in common?
All invasive species
Species causing problems for the sea life in their environment
What specific set of dams can we remove to make a change in the salmon population and why?
The lowers shed dams because they block most of the salmon spawning grounds
Causes of Blue-Green Algae
Name 3
Climate Change
Abundance of nutrients
Phosphorus
Name three affects of Blue-Green Algae
Contaminates water
Horrible smell
Causes health problems for both fish and humans
What can we do to reduce Blue Green Algae?
Used phosphors free products
Minimize the amount of nutrients that go into the lakes
Install rain barrels
What is the main purpose of rain barrels?
To conserve water
What are some benefits of having rain barrels?
Name 4
Save money
Have extra water
Prevents risk of basement flooding
Cleaner water (lime and calcium free)
Define Wet-Weather Flow?
Water collected from rain, rooftops and driveways
Name three reasons why water is so precious
Everything needs water to survive
We have a limited amount of freshwater available
We have the same water since the beginning of time
Why do we have a limited supply of freshwater available to us?
They are trapped in ice caps, glaciers, snow, the soil and atmosphere
Water is always in __________
Motion
How much of the worlds freshwater does Canada have and where can it be found?
20% and in the Great Lakes
What is the amount of usable water that Canadians have?
7%
Where does more than 50% of Canada’s river flow into?
The Arctic
How much of the world total wetland does Canada have?
25% of wetlands
How many people in the US and Canada depend on water from the Great Lakes watershed?
35 Million people
How many Canadians live in the Great Lakes watershed?
1/3 of Canada’s population
How many great lakes are there in Canada
5 (HOMES) Huron Ontario Michigan Erie Superior
What is the greatest cause for water pollution?
Cigarette butts
What harmful chemicals are belugas exposed to when looking at their autopsies?
Benzo(a)pyrene
What effect do Benzo(a)pyrene have on the whales?
Alter genes
Weaken immune system
Decrease reproduction
What is the Beluga Whales Cancer rate and ratio?
25% and 1 out of 4 belugas die of cancer
