Warning climate change could keep bull sharks in Sydney waters ‘year-round’
Sharks spend more time to hide in waters other than Sydney, and warned the seas closer to people along the coastline of Megakitis.
James Cook University survey shows that Taurus sharks, who spend their winters in Queensland, remain on the shores of Sydney in the summer of 15 days longer than 15 years ago.
JCU post -doctoral research assistant Nicolas Lubitz, increasing water temperatures will be accused, he said.
“We conducted climate analysis of the water temperatures of the coast around Sydney and found that the average temperatures have increased in the last 40 years since October,” he said.
“We have been watching the seasonal migrant bull sharks that move seasonally between Queensland and NSW, especially for 15 years outside Sydney, and now they are staying 15 days longer in 2009 in 2009.”
Dr Lubitz said the change in migration molds will expand the potential of human shark encounters.
“Sydney is the most populous city of Australia, where Taurus sharks disappeared in winter and returned to Queensland in cool months, because Taurus sharks avoided long -term temperatures below 19 degrees,” he said.
“But if they stay longer, it means that people and hunting animals have a longer overlap window with them.”
According to the Australian shark phenomenon, almost all shark matches with people in Sydney Port contain bull sharks.
They are considered one of the most dangerous and aggressive shark species in the world.
In March of this year, Sydney woman Mangyon Zhang was attacked by a bull shark at the Gunyah Beach in Buneena south of Sydney.
Mrs. Zhang survived the attack.
“The outer right leg has a very serious tear for the outer right leg, bone, calf and thigh and thigh,” he said.
“He lost a lot of blood and had transfusion.”
Dr Lubitz also said that if heating trends continue, Taurus sharks could live in the waters in Sydney.
“In general, a shark bites and shark bites in Australia remain low, while only people should be more aware of the presence of bull sharks in coastal waters outside Sydney,” he said.
Wildlife scientist Vanessa Pirotta said that the research could inform the public how it interacts with the maritime environment.
“As a whale scientist, most of these animals are economically profitable for us, Dr Dr Pirotta said.
“People will pay to swim with sharks, people will pay the whale clock.
“Their existence is very important not only ecologically, but also economically.”
Dr Lubitz said that changing climate could change the breeding patterns of bull shark and pushing predators into new reproductive areas in the south.
“If this trend persists, much more tropical species in Sydney region has a chance to change almost all dynamics throughout the year,” he added.
