Transcript: Climate Watch Shorts: The fisher's perspective | Mar 09, 2017

(music plays)

A black spinning globe appears next to the caption "TVO Climate Change Shorts."

A caption reads "Nam Kiwanuka. Climate Watch Shorts host."

Nam has curly brown hair and wears glasses, a gray parka and a red and black striped scarf.

Nam says WELCOME TO CLIMATE
WATCH SHORTS,
WHERE WE EXAMINE
THE LOCAL IMPACT
OF CLIMATE CHANGE.
WARMING TEMPERATURES
ARE CHANGING
ONTARIO'S LAKES
AND RIVERS.
SCIENTISTS PREDICT THE
RISE IN TEMPERATURE
WILL AFFECT
COLD-WATER FISH.
WE TAKE A CLOSER LOOK AT
THE FUTURE OF FISHING
IN THE PROVINCE.

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Two men fish in a stream that runs across a wooded area.

A caption reads "County of Brant."

The caption changes to Jon Whilton. Recreational fisherman."

Jon is in his early thirties, clean-shaven and wears jeans, a white and gray jacket and a woollen hat.

Jon says IT WAS JUST
SOMETHING WE ALWAYS DID
ON THE WEEKENDS
OR IN THE SUMMER.
THAT WOULD BE OUR
DAY'S ADVENTURE.
GO FISHING ON THE LAKE,
OR FIND A NEARBY RIVER
AND JUST TRY
OUR LUCK.
IT'S VERY PEACEFUL.
PEOPLE WILL SIT
AT THEIR OFFICE
AND PUT ON NATURE SOUNDS
INSTEAD OF GOING OUT,
WHICH SOMETIMES DOESN'T
MAKE A LOT OF SENSE.
IF YOU HAVE THE
TIME, GO OUT
AND JUST LISTEN
TO IT YOURSELF.
THE BIODIVERSITY AROUND
FISH, SOMETIMES ONE SPECIES
WILL PROVIDE FOOD
FOR ANOTHER,
SO IF YOU START
REMOVING FISH SPECIES
FROM THE CREEKS AND THE
RIVERS AND THE LAKES,
THEN, IT'S GONNA AFFECT
THE OTHERS FOR SURE.

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The caption changes to "George Arhonditsis. Professor of environmental science, University of Toronto."

George is in his forties, clean-shaven and with short receding wavy brown hair. He wears a blue sweater.

He says WE HAVE THE PROJECTION
OF LAKES IN ONTARIO.
WE EXPECT DIFFERENCES,
AN INCREASE, A WARMING
OF THEIR TEMPERATURE UP
TO SIX DEGREES CELSIUS.

A map of Ontario shows the increase in temperatures in different areas with different shades of orange and yellow.

George says THE INCREASE OF
THE TEMPERATURE
OVER THE YEAR-TO-YEAR
FLUCTUATIONS
DO AFFECT SIGNIFICANTLY
THE ECOPHYSIOLOGICAL RATES:
GROWTH, DEVELOPMENT,
REPRODUCTION, RECRUITMENT.
WE HAVE THE
COLD-WATER FISH.
THE COOL-WATER FISH AND
THE WARM-WATER FISH.
THE COLD-WATER FISH
LIKE LAKE TROUT.
THEN WE HAVE THE
COOL-WATER TEMPERATURE,
THE CHARACTERISTIC
ONE IS WALLEYE.
THEN YOU HAVE THE
WARM-WATER FISH
LIKE THE SMALL MOUTH
BASS WHO IS HAPPIER
WHEN THE TEMPERATURE
IS WARMER.

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Jon says ONE OF THE
THINGS THAT FISHERMEN ENJOY
IS THE CHALLENGE OF GOING AFTER
DIFFERENT SPECIES OF FISH.
BECAUSE EACH ONE REQUIRES
DIFFERENT TECHNIQUES
AND DIFFERENT BAITS.
AND SOMETIMES YOU HAVE
TO BE FLY FISHING MORE.
IN A STREAM LIKE THIS, FLY
FISHING IS VERY EFFECTIVE.

George says WE HAVE
ONE OPTIMUM TEMPERATURE
WHERE THEY CAN OPERATE AT
THE MAXIMUM POSSIBLE RATES,
SO THEY HAVE AN
OPTIMUM VALUE
WHEN THEY'RE REACHING
THEIR POTENTIAL.
AND IF THIS
TEMPERATURE IS LOWER,
OR EVEN IF IT'S EXCEEDED,
THEN THEY DO TAKE NOTICE.
THEY HAVE WHAT WE CALL
TEMPERATURE LIMITATION.
THERE WAS A
MODELLING STUDY.
AND WHAT THE RESEARCHERS
EXAMINED AT THAT TIME,
WAS HOW THE THREE
DIFFERENT FISH TYPES
WILL RESPOND TO
CLIMATE WARMING.
SO, THERE IT WAS A
MATHEMATICAL MODELLING STUDY.
SO THE SIMULATION STARTED BY
ASSUMING A FISH COMMUNITY
THAT WARM WATER AND COOL
WATER AND COLD WATER
CORRESPONDED TO
33 PERCENT.

A percentage bar appears on screen with the caption "Optimal conditions: 33 percent warm water fish and 66 percent cool and cold water fish."

George says AND THEY RAN THE
SIMULATIONS LONG ENOUGH
AND WHAT THEY FOUND IS WITH
ONE DEGREE CELSIUS INCREASE
WARM-WATER FISH WOULD
APPROXIMATELY ACCOUNT FOR
70 PERCENT OF
THE COMMUNITY.

Another percentage bar graph appears with the caption "Plus 1 degree Celsius difference" 70 percent warm water fish and 30 percent cool and cold water fish."

George says AND THE REST, 30 PERCENT
WILL BE BETWEEN COLD-WATER
AND COOL-WATER FISH,
ALTHOUGH THE STARTING POINT
WAS THE SAME.

Another graph apepars with the caption "Plus 1 degrees Celsius difference: 90 percent warm water fish."

George says TWO DEGREES CELSIUS
WARM-WATER FISH DOMINATED
THE COMMUNITY AND ACCOUNTED
FOR MORE THAN 90 PERCENT.

Jon says SO, IF YOU START TO
ELIMINATE SPECIES,
THAT KIND OF VARIETY THAT
PEOPLE ENJOY WILL END.
AND IT'LL JUST
TAKE AWAY
FROM THE ENJOYMENT
OF THE OCCASION.

George says UNTIL RECENTLY, I WAS
A BIT SKEPTICAL ABOUT
THIS EXTREME PREDICTION,
IF THINGS WOULD BE THAT
BAD IN THE FUTURE.
BASICALLY, HOW I SUPPOSE MY
GRANDKIDS - WHAT KIND OF
ENVIRONMENT MY GRANDKIDS
WILL EXPERIENCE.
AND UNFORTUNATELY, WHAT WE
WITNESS OVER THE PAST
FOUR OR FIVE YEARS, NOT
ONLY THESE PROJECTIONS
WERE NOT THAT
EXTREME.
BUT IN FACT, WHAT
IS BEING VERIFIED
ARE THE MOST PESSIMISTIC
PREDICTIONS.

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A caption reads "tvo.org/climatewatch."

Watch: Climate Watch Shorts: The fisher's perspective