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Overfishing Prezi

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by

Zack Shaw

on 21 September 2016

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Transcript of Overfishing Prezi

Background photo by t.shigesa
Overfishing
Overfishing Activity
You will work in groups of 4
Your group represents your Fishing Company!
Create a name for your company!
Each year, you'll go fishing
At the end of each year, the fish will repopulate!
Consumers
Consumers
don't value smaller fish
Farm-raised
fish (selectively growing fish for "higher quality")
Fish are fed other, smaller fish at a 5:1 ratio
Does not create more fish!
Fishing Facts
Overfishing began during the
____________ Revolution
(starting around the 1840's)
Overfishing Video
Defining Overfishing
The process of fishing too much, and too quickly...
Overfishing means that too many fish are being removed from their natural habitats...
Not enough fish are reproducing...
The population becomes unstable and declines!
Unsustainable
fishing - we will run out of fish if we continue OVERFISHING!!
Fishing Nets can:
Be the size of
4 football fields
Hold
500 tons of fish
(about the weight of 6,500 people)
Fishing "Bycatch"
Ocean life that is
unintentionally caught
About
75% of fish are bycatch
and not used by the fishermen
Trawling can Destroy
Coral
Fishing Nets
Sustainability
The ability for something to be used, but not destroyed or permanently damaged
Fish can be sustainable because in a population, some fish can be caught while others can reproduce
Overfishing is unsustainable
If we keep fishing at this rate, by 2060 the world's fisheries will have collapsed!! No more fish!
Balance is needed! Now it's your turn to practice!

Careful Balance
Sustainable
Reproducing
Safe Catch Limits
Protection of endangered or important habitats
Unsustainable
New technologies
Fishing nets
Bycatch
Farm-raised fish
Consumers
How do we get our fish?
How many people are there on Earth?
What did you notice as your group purchased more advanced technology?
As time increased?
What happened in the last round, with the most effective technologies at your disposal and most time?
What were some of the strategies your company came up with when fishing?
What happens when there are no more fish to be caught?
What do you think
"Overfishing"
means?
Year #2
You still have
15 seconds
to fish
The number of Rotini fish in your ocean doubles due to reproduction
Year #3
This year, you will have
30 seconds
to fish
The number of Rotini fish in your ocean doubles due to reproduction
Year #4
You still have
30 seconds
to fish
The number of Rotini fish you have in your ocean doubles due to reproduction
Scientists have found a new species of fish: Block fish (Include the number of Block fish you catch in the total number of fish on your tables)
Remove 5 Rotini fish because the Block fish have eaten their food and reduced the population of Rotini fish
Year #5
This year, you will have
45 seconds
to fish
The number of Rotini and Block fish double due to reproduction
Year #6
You still have
45 seconds
to fish
The number of Rotini and Block fish double due to reproduction
Year #1
You will start off with
15 seconds
to fish
There will be 12 Rotini fish in your ocean
You will each have one straw (fishing pole) to fish with
You can buy new fishing tools whenever you have enough $
Your company operates a fishing vessel in the North Atlantic ocean, where you fish for Cod, Salmon, Haddock, and other saltwater fish. This simulation shows how a fish population may change over time. In the container are 10 rotini pasta to recreate the native Atlantic Cod population.

The population of fish will double from what you end every year with.

You will need to maintain a balance or positive growth in the fish population in order to have sustained success over many years. If you fish too much, your population will suffer! Each fish that you catch is worth $1, which can be traded to buy alternative fishing equipment or saved in your bank. When the challenge ends, the group with the most money will win!
Your ocean will be a paper plate. Place the fish you catch from your ocean onto your boat - a plastic container. If you
drop a fish
before it making it to the container, you
must replace the fish in the ocean.
Every fish you catch will earn you $1. With the money that you earn, you can purchase new technologies to help you catch fish more easily.
After each year, bring your boat up to the front of the room for inventory! You will record the number of fish each group caught. The number of fish you have left in your ocean will double before the next year.
PROCEDURE
I
n the first year, you will each have one straw each to use as your fishing pole. Do not place your mouth on the straw, or it will be removed from play.
Use the chart to keep track of the beginning fish, number caught, and number remaining.
The number of fish remaining will double each year (from what you end the round with).
In the first year, you have 15 seconds to catch the fish.
The amount of time for fishing will change in each round
Remember to listen to all instructions you are given!

Year ...
You have
__ seconds
to fish
The rules herein are subject to change...
We currently have enough resources (fishing boats, nets, and equipment) to fish a planet
4 TIMES THE SIZE OF EARTH!
Only
_ _%
of the population of large ocean fish that existed
before
the
Industrial Revolution

still exists
today!
Industrial Revolution!
only 10% remains today!
OCEAN
FISHING BOAT
12
Round 2 Starting #
6
4
10
10
Full transcript