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Loggerhead Turtles Face Extinction due to Global Warming

Loggerhead Turtles Face Extinction due to Global Warming


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 11 July 2019

 

ANTHROPOCENE

Loggerhead Turtles
Loggerhead turtles in Cape Verde, University of Exeter, Lucy Hawkes.
Run little turtles, run! Loggerhead turtles in Cape Verde, University of Exeter, Lucy Hawkes.

 

Turtle Troubles

No New Males: Climate Change Threat to Cape Verde Turtles,
University of Exeter, July 11, 2019.

MAIN POINTS

Hot End of Loggerhead Turtles
"...by 2100 - more than 90% of loggerhead nests on the Cape Verde islands could incubate at "lethally high temperatures", killing turtles before they hatch."

Turtle Troubles
"The sex of turtle hatchlings is determined by incubation temperature..."

Low Heat Not Happening…
"Even under a scenario based on low future emissions and warming, by 2100 just 0.14% of hatchlings would be male."

Realistic
"Under mid and high-emissions scenarios, hatching of male loggerheads could cease entirely."

Nearing the End
"We estimate that 84% of current hatchlings are female, and warmer temperatures will increase this proportion."

How Long the End?
"It is not clear how long it will take the population to decline if males stop being produced, as the reproductive lifespan of males is not known - so older males may continue breeding for many years after new males stop being hatched."

 

Jan 2018
Shifting Climate Changing World of Turtles: Warming Climate Changed Aussie Turtles Female

Jan 2018
Changing Ecosystems: Turtle Trouble Widespread, Flordia too, Warm Sand & Water Dooms Turtles?

 

 

Anthropocene

News of Man & Nature, July 2019

 

 

 

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Loggerhead Turtles, global warming, Cape Verde Islands, extinction, anthropocene, mortality, 2100

 

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