Results 301 to 310 of about 3,958,760 (345)
Some of the next articles are maybe not open access.
Altered Primary Production During Mass-Extinction Events
The Paleontological Society Papers, 2013The Big Five mass-extinction events are characterized by dramatic changes in primary producers. Initial disturbance to primary producers is usually followed by a succession of pioneers that represent qualitative and quantitative changes in standing crops of land plants and/or phytoplankton.
van de Schootbrugge, B., Gollner, S.
openaire +3 more sources
Stratigraphy, 2008
Ostracod faunas from Upper Permian to Lower Triassic shelf deposits of Northwestern Iran were investigated with respect to their stratigraphical range, palaeoecology and extinction patterns.
W. Mette
semanticscholar +1 more source
Ostracod faunas from Upper Permian to Lower Triassic shelf deposits of Northwestern Iran were investigated with respect to their stratigraphical range, palaeoecology and extinction patterns.
W. Mette
semanticscholar +1 more source
The Pliensbachian and Tithonian extinction events
Nature, 1986The claim by Raup and Sepkoski1, that an approximately 26-Myr mass extinction periodicity can be recognized on a global scale at family level over the past 250 Myr, has excited much attention and provoked speculation about an ultimate extraterrestrial cause2–10.
openaire +1 more source
The end-Triassic bivalve extinction event
Palaeogeography, Palaeoclimatology, Palaeoecology, 1981One of the most important episodes of mass extinction of animal groups in the whole of the Phanerozoic took place in the latter part of the Triassic, but the time of major faunal turnover of the vertebrates preceded that of marine invertebrates by several million years.
openaire +1 more source
The Search for an Extinction Event
The Paleontological Society Special Publications, 1994Death of an organism is a very personal event. The extinction of a species is viewed as catastrophic, only if one is a member of that species. In fact, the extinction of a species simply represents the sum total of deaths of individuals within the species during a time interval in which the rate of death exceeds the rate of recruitment of new ...
openaire +1 more source
Human Extinction from Natural Hazard Events
2018Like any other species, Homo sapiens can potentially go extinct. This risk is an existential risk: a threat to the entire future of the species (and possible descendants). While anthropogenic risks may contribute the most to total extinction risk natural hazard events can plausibly cause extinction.
openaire +1 more source