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extinction

Overview page. Subjects: Chemistry.

an older term (no longer recommended) for absorbance.

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extinction

Robert C. King, William D. Stansfield and Pamela K. Mulligan.

in A Dictionary of Genetics

January 2007; p ublished online January 2007 .

Reference Entry. Subjects: Genetics and Genomics. 14 words.

termination of an evolutionary lineage without descendants. See mass extinction, pseudoextinction, taxonomic extinction.

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extinction

Robert C. King, Pamela K. Mulligan and William D. Stansfield.

in A Dictionary of Genetics

January 2013; p ublished online January 2014 .

Reference Entry. Subjects: Genetics and Genomics. 14 words.

termination of an evolutionary lineage without descendants. See mass extinction, pseudoextinction, taxonomic extinction.

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extinction

Edited by MICHAEL ALLABY.

in A Dictionary of Earth Sciences

January 2008; p ublished online January 2008 .

Reference Entry. Subjects: Earth Sciences and Geography. 184 words.

1 In optical mineralogy, a mineral is said to be in extinction when the vibration direction of the two rays

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Extinction

Kevin J. Gaston.

in Encyclopedia of Evolution

January 2002; p ublished online January 2005 .

Reference Entry. Subjects: Evolutionary Biology. 2974 words.

Species do not persist indefinitely. The period from the origin to the extinction of a typical species is thought to

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extinction

Andrew Liddle and Jon Loveday.

in The Oxford Companion to Cosmology

January 2008; p ublished online January 2008 .

Reference Entry. Subjects: Astronomy and Astrophysics. 611 words.

Extinction is the name given to the reduction in apparent brightness of an astronomical source by absorption or scattering of

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extinction

in World Encyclopedia

P ublished online January 2004 .

Reference Entry. Subjects: General Studies. 32 words.

Dying out of a species or population. Extinction is part of the process of evolution in which certain species of

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Extinctions

in Berkshire Encyclopedia of World History

January 2010; p ublished online August 2016 .

Reference Entry. Subjects: History. 3068 words.

Extinctions have occurred throughout the history of the Earth; extinction is in fact a critical component in the theory of evolution and is attributed to natural selection,...

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extinction

Michael Allaby.

in A Dictionary of Geology and Earth Sciences

January 2013; p ublished online September 2013 .

Reference Entry. Subjects: Earth Sciences and Geography. 190 words.

1. In optical mineralogy, a *mineral is said to be in extinction when the *vibration direction of the two rays of a doubly refracting ...

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extinction

Overview page. Subjects: Earth Sciences and Geography.

1 In optical mineralogy, a mineral is said to be in extinction when the vibration direction of the two rays of a doubly refracting crystal coincide with the vibration...

See overview in Oxford Index

extinction

Michael Kent.

in The Oxford Dictionary of Sports Science & Medicine

January 2006; p ublished online January 2007 .

Reference Entry. Subjects: Sports and Exercise Medicine. 36 words.

The gradual elimination of a learned response due to lack of reinforcement. In classical conditioning, extinction of the conditioned response occurs when the conditioned stimulus is...

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Extinction

Norman MacLeod.

in Evolutionary Biology

P ublished online June 2016 .

Article. Subjects: Evolutionary Biology. 14314 words.

In 1980 an interdisciplinary research team from the University of California, Berkeley made a startling announcement in the highly respected science journal/magazine Science (cited under...

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Extinction

Mark V. Barrow.

in Oxford Research Encyclopedia of Environmental Science

P ublished online January 2018 .

Article. Subjects: Environmentalist Thought and Ideology (Environmental Science); Pollution and Threats to the Environment (Social Science); Ecology and Conservation; Environmental History. 15883 words.

The prospect of extinction, the complete loss of a species or other group of organisms, has long provoked strong responses. Until the turn of the 18th century, deeply held and widely shared...

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extinction

Edited by Robert Hine.

in A Dictionary of Biology

April 2019; p ublished online April 2019 .

Reference Entry. Subjects: Biological Sciences. 176 words.

1. The irreversible condition of a species or other group of organisms of having no living representatives in the wild, which follows the death of the last surviving individual...

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extinction

Edited by Elizabeth Martin and Robert Hine.

in A Dictionary of Biology

June 2016; p ublished online September 2015 .

Reference Entry. Subjects: Biological Sciences. 176 words.

1. The irreversible condition of a species or other group of organisms of having no living representatives in the wild, which follows the death of the last surviving individual...

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extinction

Overview page. Subjects: Environmental Science.

1 The irreversible condition of a species or other group of organisms of having no living representatives in the wild, which follows the death of the last surviving individual...

See overview in Oxford Index

Extinctions

Lizabeth Paravisini-Gebert.

in The Oxford Handbook of Ecocriticism

August 2014; p ublished online March 2014 .

Article. Subjects: Literary Studies (Postcolonial Literature); Literary Theory and Cultural Studies. 8731 words.

This article examines the extinction of some animals in colonial and postcolonial Caribbean region, including the Caribbean monk seal and the Creole pig, which became victims of human...

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Mass Extinctions

Anthony Hallam.

in Encyclopedia of Evolution

January 2002; p ublished online January 2005 .

Reference Entry. Subjects: Evolutionary Biology. 4900 words.

A mass extinction is an extinction of a significant proportion of the world's biota in a geologically brief period of

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Extinction dynamics

Russell Lande, Steinar Engen and Bernt-Erik SÆther.

in Stochastic Population Dynamics in Ecology and Conservation

April 2003; p ublished online April 2010 .

Chapter. Subjects: Animal Pathology and Diseases. 9684 words.

This chapter begins with a discussion of paleo-extinctions. It then discusses modern anthropogenic extinctions, diffusion approximation of stochastic dynamics, extinction trajectories in...

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Dinosaur Extinction

J. David Archibald and David E. Fastovsky.

in The Dinosauria

June 2004; p ublished online March 2012 .

Chapter. Subjects: Evolutionary Biology. 11274 words.

The disappearance of nonavian dinosaurs is only a small part of a greater class of extinctions known as “mass extinctions.” Mass extinctions are global events characterized by unusually...

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extinctions and mass extinctions

David K. Elliott.

in The Oxford Companion to the Earth

January 2000; p ublished online January 2003 .

Reference Entry. Subjects: Earth Sciences and Geography. 1941 words.

Extinction of species is a continuous process, and evidence of its occurrence abounds in the fossil record. It has been

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