Background extinction rate, also known as the normal extinction rate, refers to the standard rate of extinction in Earth's geological and biological history before humans became a primary contributor to extinctions. This is primarily the pre-human extinction rates during periods in between major extinction events. Currently there have been five mass extinctions that have happened since the beginning of time all resulting from a variety of reasons.
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Backgroundextinctionrate, also known as the normal extinctionrate, refers to the standard rate of extinction in Earth's geological and biological history...
organisms. It occurs when the rate of extinction increases with respect to the backgroundextinctionrate and the rate of speciation. Estimates of the...
unrecorded. The current rate of extinction of species is estimated at 100 to 1,000 times higher than natural backgroundextinctionrates and is increasing. During...
lists of species and organisms that have become extinct. The reasons for extinction range from natural occurrences, such as shifts in the Earth's ecosystem...
completely in the first extinction pulse. The Foliomena fauna was formerly widespread and resistant to backgroundextinctionrates prior to the Hirnantian...
Bonsall, Michael B. (July 30, 2019). "An upper bound for the backgroundrate of human extinction". Scientific Reports. 9 (1): 11054. Bibcode:2019NatSR...911054S...
The Voluntary Human Extinction Movement (VHEMT) is an environmental movement that calls for all people to abstain from reproduction in order to cause the...
though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area...
results found that the current extinctionrate of amphibians could be 211 times greater than the backgroundextinctionrate. This estimate even goes up to...
protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions. It is an interdisciplinary...
of megafauna extinctions is progressively larger the further the human migratory distance from Africa, with the highest extinctionrates in Australia...
L. (April 2015). "Estimating the normal backgroundrate of species extinction: BackgroundRate of Extinction" (PDF). Conservation Biology. 29 (2): 452–462...
also cause extinction debt by reducing a species' birth rate or increasing its death rate so that its population slowly declines. Extinction debts may...
the conservation status of major species groups, and measures trends in extinction risk over time. By conducting conservation assessments at regular intervals...
traits (such as large body size and slow reproductive rate) that could render them extinction-prone. Another notable region of high latent risk for mammals...
Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Late Devonian extinction consisted of several...
Extinction vortices are a class of models through which conservation biologists, geneticists and ecologists can understand the dynamics of and categorize...
biodiversity is to maintain ecological function to prevent ecological extinction. Examples of species and subspecies that are extinct in the wild include...
The extinction symbol represents the threat of holocene extinction on Earth; a circle represents the planet and a stylised hourglass is a warning that...
Functional extinction is the extinction of a species or other taxon such that: It disappears from the fossil record, or historic reports of its existence...
affected by extinction and speciation. The backgroundextinctionrate varies among taxa but it is estimated that there is approximately one extinction per million...
colonization rate must be larger than the extinctionrate, otherwise the entire entity will go extinct once it reaches the threshold. Extinction thresholds...
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