‘It is the equivalent of having summer for the first time in thousands to millions of years’
Deep sea ecosystems that have barely been explored are at risk from global warming, as low-oxygen zones spread and ocean acidification increaseses. By 2100, organisms deep on the ocean floor may face starvation and sweeping ecological changes, according to scientists from 20 of the world’s leading oceanographic research warned last week.
“Biodiversity in many of these areas is defined by the meager amount of food reaching the seafloor and over the next 80-plus years – in certain parts of the world – that amount of food will be cut in half,” said Andrew Thurber, an Oregon State University marine ecologist and co-author of the study, published in the journal Elementa. Continue reading “Deep oceans at risk from climate change”→
Study says 90 percent of all predatory fish species have been lost from Caribbean coral reefs
Not all Caribbean reefs are created equal, say researchers with the University of North Carolina at Chapel Hill, who recently identified reef areas they are calling “supersites”that could help restore populations of predatory fish needed maintain an ecological balance.
That’s the good news. The bad news is their study also shows that up to 90 percent of predatory fish are gone from Caribbean coral reefs. The research suggests that these supersites should be prioritized for protection and could serve as regional models showcasing the value of biodiversity for tourism and other uses. Continue reading “Can ‘supersites’ anchor coral reef protection efforts?”→
The threat of roads to carnivore species around the world has been seriously underestimated, according to a new study that looked at the issue on a global scale.
After looking at 232 carnivore species around the world (out of a total of about. 270 existing species) and assessing how severely these are affected by roads cut through their habitat, the researchers concluded that some rare species are even at risk in areas with low road densities. The study, published in the journal Global Ecology and Biogeography, calculated natural mortality rates, reproduction and carnivore movement patterns, determining the maximum density of roads that a species can cope with. Continue reading “Study says road threat to carnivores is underestimated globally”→
Federal biologists say they can boost the population of grizzly bears in the North Cascades ecosystem by relocating the predators from other areas. The National Park Service and the U.S. Fish and Wildlife Service this week released a draft plan (open for public comment), for increasing the total number of bears in the region to 200. Bt current estimates, only about 10 remain, too small a population to sustain itself. According to the draft plan, grizzly bears could be relocated from either northwestern Montana or south-central British Columbia.
“We’re happy to see the agencies taking a step in the right direction to restore grizzly bears to the North Cascades,” said Andrea Santarsiere, a senior attorney with the Center for Biological Diversity. “Without a helping hand, grizzly bears are likely to disappear from the Pacific Northwest.” Continue reading “Feds eye grizzly reintroduction in North Cascades”→
With perhaps fewer than 100 vaquitas remaining in the Gulf of California, conservation experts say they will start a last-ditch recovery effort by trying to capture several of the marine mammals and keeping them in a temporary sanctuary. The emergency action plan will be led by the Mexican government and supported by a consortium of marine mammal experts from more than a dozen organizations around the world.
Despite substantial efforts by the Mexican government to protect vaquitas, the recovery team recently reviewed the latest results from advanced acoustic monitoring technology that showed the vaquita population continuing to rapidly decline.
“We are watching this precious native species disappear before our eyes,” said Rafael Pacchiano, Mexico’s secretary of the environment and natural resources. “This critical rescue effort is a priority for the Mexican government and we are dedicated to providing the necessary resources in order to give the plan its best chance of success.” The plan will be implemented in tandem with ongoing efforts to remove the threat of gillnets in the Upper Gulf of California and eliminate illegal fishing. Continue reading “Conservation groups eye emergency rescue plan for vaquitas”→
Some snake populations appear at-risk from spreading fungal pathogen
First the chytrid fungus started killing amphibians, then white-nose syndrome emerged to devastate bat populations, and now, there’s Ophidiomyces ophiodiicola, a snake-killing fungus that appears to be much more widespread than thought, according to new research from the U.S. Geological Survey.
The USGS report concluded the fungus is present in at least 20 eastern states and in many snake species not previously known to harbor the fungus. These findings increase the total number of confirmed susceptible snake species to 30. Snakes affected by Snake Fungal Disease include the threatened eastern massasauga rattlesnake. The research also shows that SFD infections are often mild, but there are unknown factors that cause outbreaks of severe skin disease and death. Continue reading “Snake-killing fungus is widespread in the East”→