Tag Archives: decline
Decline in atmospheric carbon dioxide key to ancient climate transition
A decline in atmospheric carbon dioxide (CO2) levels led to a fundamental shift in the behavior of the Earth’s climate system around one million years ago, according to new research led by the University of Southampton. Geology News — ScienceDaily
Woolly rhino neck ribs provide clues about their decline and eventual extinction
A study reports on the incidence of abnormal cervical (neck) vertebrae in woolly rhinos, which strongly suggests a vulnerable condition in the species. Given the considerable birth defects that are associated with this condition, the researchers argue it is very … Continue reading
Decline in Chinese lake phosphorus concentration accompanied by shift in sources since 2006
Nature Geoscience 10, 507 (2017). doi:10.1038/ngeo2967 Authors: Yindong Tong, Wei Zhang, Xuejun Wang, Raoul-Marie Couture, Thorjørn Larssen, Yue Zhao, Jing Li, Huijiao Liang, Xueyan Liu, Xiaoge Bu, Wei He, Qianggong Zhang & Yan Lin Nature Geoscience – Issue – nature.com … Continue reading
Posted in Geology
Tagged 2006, accompanied, Chinese, concentration, decline, since, sources
Leave a comment
New indications of gradual decline of dinosaurs before the end of the cretaceous period
The gradual decline of the dinosaurs and pterosaurs presumably came before the impact of the Chicxulub asteroid and the global mass extinction at the end of the Cretaceous Period, new research suggests. Studies also indicate that bird species spread and … Continue reading
Manmade earthquakes in Oklahoma on the decline
Saltwater disposal and earthquakes in Oklahoma are shown. Credit: Cornelius Langenbruch. New regulations in Oklahoma that call for reductions in the amount of wastewater being injected into seismically active areas should significantly decrease the rate of manmade, or “induced,” earthquakes … Continue reading
Ice cores reveal a slow decline in atmospheric oxygen over the last 800,000 years
Researchers have compiled 30 years of data to construct the first ice core-based record of atmospheric oxygen concentrations spanning the past 800,000 years. The record shows that atmospheric oxygen has declined 0.7 percent relative to current atmospheric-oxygen concentrations, a reasonable … Continue reading
Ice cores reveal a slow decline in atmospheric oxygen over the last 800,000 years
Researchers have compiled 30 years of data to construct the first ice core-based record of atmospheric oxygen concentrations spanning the past 800,000 years. The record shows that atmospheric oxygen has declined 0.7 percent relative to current atmospheric-oxygen concentrations, a reasonable … Continue reading
For ancient deep-sea plankton, a long decline before extinction
A new study of nearly 22,000 fossils finds that ancient plankton communities began changing in important ways as much as 400,000 years before massive die-offs ensued during the first of Earth’s five great extinctions. The research suggests that the effects … Continue reading
For ancient deep-sea plankton, a long decline before extinction
A new study of nearly 22,000 fossils finds that ancient plankton communities began changing in important ways as much as 400,000 years before massive die-offs ensued during the first of Earth’s five great extinctions. read more (e) Science News – … Continue reading
Dinosaurs ‘already in decline’ before asteroid apocalypse
New research suggests that other factors, such as the break-up of continental land masses, sustained volcanic activity and other ecological factors, may possibly have influenced the gradual decline of dinosaurs. The long-necked giant sauropod dinosaurs were in the fastest decline, … Continue reading