Long-term carbon storage in soil crucial to climate mitigation
Coastal wetlands like mangrove forests, seagrass meadows and tidal marshes play a key role in the global carbon cycle, serving as effective long-term reservoirs for so-called blue carbon. Their role is so important they should be considered in global climate change mitigation strategies, according to a new study published last week n the journal Frontiers in Ecology and the Environment.
Spruce beetles continued to expand in Colorado in 2016, at least in part due to global warming and drought, as well as the density of old-growth spruce forests.
In all, spruce beetles were active across 350,000 acres of higher-elevation stands of Engelmann spruce statewide, including about 136,000 acres of new activity, causing widespread tree mortality, according to the results of the latest aerial surveys conducted by the U.S. Forest Service and the Colorado State Forest Service. Since 1996, spruce beetle outbreaks have caused tree mortality on more than 1.7 million acres in Colorado. Continue reading “Spruce beetles still on the march in Colorado”→
New CSU study eyes regional climate cycle as one factor
This year’s rapid loss of sea ice around Antarctica may make the floating ice shelves along the coast of the continent even more vulnerable to collapse, and a Hemisphere climate cycle known as the Southern Annular Mode is probably a factor in the equation.
Study projects 55 percent increase in acidity in next 50 years
There’s no stopping ocean acidification without stopping CO2 emissions, and that’s bad news for many marine species, including Dungeness crabs, according to new new research published in the journal Global Change Biology.
Tiny shell-forming organisms like pteropods and copepods are vulnerable to acidification, but will likely experience only a slight overall decline because they are prolific enough to offset much of the impact, the study found. But those impacts will cascade through ocean ecosystems to affect larger animals like crabs, that will suffer as their food sources decline. Dungeness crab fisheries are valued at about $220 million annually, and may face a strong downturn over the next 50 years. Continue reading “Ocean acidification to hit key fisheries”→
Antarctic ice shelves are melting fastern than ever and sea ice globally is the lowest on record since accurate measurements started.
Scientists working in Greenland have been stunned by the speed at which ice is retreating.
Sea ice is vanishing around the Antarctic Peninsula, and there are signs the West Antarctic ice sheet may be prone to disintegration.
Coastal sea ice around Greenland.
An iceberg Arch in the Weddell Sea.
It’s hard to really get your head around what it means that the Arctic ice cap is literally melting away, and perhaps even harder to imagine that massive tracts of Antarctic ice are also giving way to global warming. But the science is pretty clear: During other epochs of Earth’s geological history, at times when there were similar global temperatures and about the same amount of CO2 in the atmosphere, so much ice melted that sea level was at least 20 feet higher than today. Today’s Earth — our Earth — seems to be responding the same way. For all of December, the extent of global sea ice has set record lows every single day. The Arctic meltdown is well documented by more than 100 years of data. Around the South Pole, more and more studies are showing warm layers of water melting large coastal slabs of ice that hold back the almost unimaginable masses of ice on the Antarctic continent. The images in this set are just snapshots, but what’s happening out there is very real. Take #climateaction now.
Not all global warming is equal, according to scientists who just published new research on how some areas will warm much faster than others. The study, published in PLOS ONE, shows that the northeastern U.S. is already heating up much faster than the global average and will hit the 2 degree Celsius mark about 20 years before the global average climbs to that level.