Increase in CO2 has not stimulated growth of tropical trees
Since the start of the industrial revolution in 1850, atmospheric CO2 levels have increased by about 40%. However, contrary to expectations, the growth of tropical trees has not increased as a result. Th ...
Tree rings and arroyos
A new GSA Bulletin study uses tree rings to document arroyo evolution along the lower Rio Puerco and Chaco Wash in northern New Mexico, USA. By determining burial dates in tree rings from salt cedar and wi ...
Stalactites, tree rings considered for climate clues
A local water expert says more work needs to be done to understand the state's past atmospheric conditions to determine how climate change will affect water resources.
Teams search for clues about ancient, recent fires
On a quest to learn more about fires in the Northern Rockies, Montana State University, Salish Kootenai College and federal researchers are looking to the trees, lakes and oral tradition for insights they ...
Climate change caused empire's fall, tree rings reveal
(Phys.org) —A handful of tree ring samples stored in an old cigar box have shed unexpected light on the ancient world, thanks to research by archaeologist Sturt Manning and collaborators at Cornell, Arizona, ...
Emerald ash borers were in US long before first detection
New research at Michigan State University shows that the uber-destructive emerald ash borer arrived at least 10 years before it was first identified in North America.
Arctic study sheds light on tree-ring divergence problem
Changes in tree-ring density in the Arctic may be evidence of changes in light intensity during the trees' growth, according to a new study by San Francisco State University researcher Alexander Stine.
Mongol Empire rode wave of mild climate, says study
Researchers studying the rings of ancient trees in mountainous central Mongolia think they may have gotten at the mystery of how small bands of nomadic Mongol horsemen united to conquer much of the world ...
Recent decades likely wettest in four millennia in Tibet
Recent decades may have been the wettest in 3,500 years in North East Tibet – according to climate researchers at the University of East Anglia (UK) and the Chinese Academy of Sciences (Lanzhou, China).
Tropical forests not as untouched as often thought
Tropical forests may not be the ancient, unspoilt ecosystems we have always assumed them to be. This notion needs to be revised, write Wageningen University researchers in the January issue of the scientific ...
Research team claims Samalas volcano source of great 1257 eruption
First long temperature reconstruction for the eastern Mediterranean based on tree rings
For the eastern Mediterranean, an exactly dated time series of almost 900 year length was established, exhibiting the medieval warm period, the little ice age between the 16th and 19th century as well as ...
Giant Triassic amphibian was a burrowing youngster
Krasiejow, Poland was a vastly different place 230 million years ago during the Triassic Period. It was part of a giant continent called Pangea, had a warm climate throughout the year, and was populated by ...
Red cedar tree study shows that Clean Air Act is reducing pollution, improving forests
A collaborative project involving a Kansas State University ecologist has shown that the Clean Air Act has helped forest systems recover from decades of sulfur pollution and acid rain.