The one-two punch of warming waters and ocean acidification is predisposing some marine animals to dissolving quickly under conditions already occurring off the Northern California coast, according to a study from the University of California, Davis. In the study, published in the journal Proceedings of the Royal Society B: Biological Sciences, researchers at the UC Davis Bodega Marine Laboratory raised bryozoans, also known as “moss animals,” in seawater tanks and exposed them to various levels of water temperature, food and acidity.
How hot our planet will become for a given amount of greenhouse gases is a key number in climate change. As the calculation of how much warming is locked in by a given amount of emissions, it is crucial for global policies to curb global warming. It is also one of the most hotly debated numbers in climate science. Observations in the past decade seem to suggest a value that is lower than predicted by models. But a University of Washington study shows that two leading methods for calculating how hot the planet will get are not as far apart as they have appeared.
Massive seagrass beds in Western Australia’s Shark Bay — a UNESCO World Heritage Site — haven’t recovered much from the devastating heat wave of 2011, according to a new study demonstrating how certain vital ecosystems …
A large international team of researchers has found another troubling indicator of climate change: the Arctic Ocean around the North Pole is getting warmer, and in the process, becoming more like the Atlantic Ocean to its south. Specifically, the eastern Eurasian Basin is now more ice-free and showing mixing of vertical layers of water, a phenomenon common in the Atlantic. Record-breaking loss of sea ice has become a common feature in the Arctic every summer the last 10 years or so. Since 2011, the eastern Eurasian Basin region has been nearly free of ice at the end of every summer.
South Georgia is an island of astonishing beauty – of imposing landscapes, and bewildering numbers of penguins, seals and seabirds. It also has some impressive ice fields, although none it seems quite like those of the past. Some 20,000 years ago the island’s glaciers pushed out 50km and more from their current positions, reaching to the edge of the continental shelf. The British Overseas Territory was in effect covered by a giant ice cap. This realisation is reported in the current edition of the journal Nature Communications.
Louisiana is rapidly losing its storm-buffering wetlands to the sea due to the combined effects of blocked off river deltas, sinking land and rising sea levels. About 45% of Louisiana’s swamps are on track to become totally submerged if the current trend continues, according to a study published in the journal Nature Communications. The other 65% are also at risk of being lost to the sea, but not so imminently.
The fight to save coral reefs just got more complicated. New research found that even if humans succeed in protecting reefs from pollution and overfishing, global warming will still pose a deadly threat.
A new study finds evidence that the last time Earth was as warm as it is today, cold freshwater from a melting Greenland ice sheet circulated in the Atlantic Ocean as far south as Bermuda, elevating sea levels and altering the ocean’s climate and ecosystems. The research shows a large pulse of cold freshwater covered the North Atlantic for a brief period of time about 125,000 years ago.
We’re in the final month of meteorological winter, and Arctic sea ice extent continues to set record lows. The low amounts of ice, compared to average, in the Arctic region have been an ongoing concern since November, and hasn’t let up through the start of February. Ice extent in the Arctic region set daily record lows through most of January, leading to the lowest January extent in the 38-year satellite record, according to the National Snow and Ice Data Center (NSIDC).
Ten times a year, the Naval Station Norfolk floods. The entry road swamps. Connecting roads become impassable. Crossing from one side of the base to the other becomes impossible. Dockside, floodwaters overtop the concrete piers, …
Climate-driven disturbances are having profound impacts on coastal ecosystems, with many crucial habitat-forming species in sharp decline. However, among these degraded biomes, examples of resilience are emerging. Writing in BioScience, Jennifer O’Leary, a California Sea Grant Marine Biologist based at Polytechnic State University, and her colleagues describe these recoveries and highlight the possible implications for ecosystem-sparing management.
Coastal ecosystems and aquifers will be greatly affected by climate change, not only from rising temperatures and more volatile weather, including changes in precipitation patterns, but also from sea level rise. In the search for methods to analyze these effects, researchers at NJIT have identified powerful statistical tools that should help coastal scientists both measure and anticipate changes in conditions such as subsurface water temperature and salinity. Results from the study, funded by the National Oceanic and Atmospheric Administration, have been published in Scientific Reports, an online affiliate of Nature.