New study shows how to help recover endangered loggerheads
Nobody likes a dirty bedroom and sea turtles are no exception.
New research by scientists at the University of Florida shows that removing beach debris helps sea turtle nesting. At cleared beaches, the number of nests rose by as much as 200 percent, the study shows, while leaving the detritus decreased the number by nearly 50 percent.
With many sea turtle species classified as endangered or threatened, restoring nesting habitat is critical to keeping them alive, said Ikuko Fujisaki, the study’s lead author and an assistant research professor of wildlife ecology and conservation with the UF Institute of Food and Agricultural Sciences. Continue reading “Debris-free beaches aid sea turtle nesting”→
New survey results show as few as 60 remaining vaquita porpoises in the Gulf of California
The population of vaquita porpoises in the Gulf of California may be down to just 60 individuals, according to conservation advocates, who released the results of recent surveys in a press release last week.
New research offers clues on global pollution pathways
Polluted dust from Asia is cutting oxygen levels in the tropical Pacific Ocean, researchers said this week, releasing a new study that traces a chain reaction that starts with land-based industrial pollution in China and other Asian countries.
“There’s a growing awareness that oxygen levels in the ocean may be changing over time,” said Taka Ito, an associate professor at Georgia Tech’s School of Earth and Atmospheric Sciences. “One reason for that is the warming environment – warm water holds less gas. But in the tropical Pacific, the oxygen level has been falling at a much faster rate than the temperature change can explain,” Ito said.
Study shows ocean dynamics mixing microplastics deep into the water column
There’s no question that plastics pollution in the world’s oceans is a serious and growing problem. One recent study estimated that somewhere between 5 million and 13 million metric tons of plastic waste were dumped into the ocean in 2010 alone, for the sake of comparison, one metric ton is 2,200 pounds, about the weight of a small car.
Other studies focusing on the impacts of all the debris show that plastic poses a risk to sea turtles,crabs and seabirds, while research voyages have shown that the tiny microparticles are to be found nearly everywhere, including the Arctic.
And new research released in April suggests that most estimates of plastics pollution in the ocean may be far too low, because most attention has been focused on measuring the debris floating near the surface. But ocean turbulence may be mixing the plastic much deeper, beyond the reach of the surface sampling, according to University of Delaware physical oceanographer Tobias Kukulka. Continue reading “There’s more plastic debris in the oceans than we think”→
Deoxygenation caused by global warming is already detectable in some of the world’s warmest ocean areas, climate scientists said last week, announcing the results of a new study that shows how increasing global temperatures will play out.
Based on their modeling, the researchers said they could detect the influence of human-caused climate change in the southern Indian Ocean and parts of the eastern tropical Pacific and Atlantic basins. They expect to be able to detect similar signs in many other ocean areas between 2030 and 2040. Continue reading “Global warming starting to rob oceans of oxygen”→