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Anthropocene extinction event
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The anthropocene extinction event,[1] anthropocene mass extinction[2] or sixth mass extinction[3] are terms which have been used to describe the Wikipedia:anthropogenic (due to human activity) Wikipedia:mass extinctions occurring from the late Wikipedia:Pleistocene[4] to the present day, and hypothesized projections of future events.
Influence of the Anthropocene[edit]
The Wikipedia:Anthropocene is the period in Earth's history where the results of human activity became a major influence upon ecosystems such that it is distinguished from the contemporary Pleistocene, Wikipedia:Quaternary period, and Wikipedia:Holocene. Extinction of animals and plants caused by human actions may go as far back as the late Wikipedia:Pleistocene. If a strict delineation of geologic ages as being unable to overlap is held to, then paradoxically, human-driven extinctions may therefore pre-date the Anthropocene. he extinction of megaherbivores in the late Pleistocene is explained by one of two hypotheses, or a combination of the two: climate change, and the ecological impact of early humans. Not only hunting, but anthropogenic fire selected for the survival of Wikipedia:ruminants more than the survival of browsing, and against carnivores and scavengers which fed on both.[5][6][7]
Geologic time periods influenced[edit]
- Quaternary period, which encompasses the Pleistocene and Holocene epochs.
- Pleistocene epoch
- Holocene epoch
Although they are most strictly defined in terms of geologic processes, this period and its epochs lend their names to the more common designations of extinction instances in this time frame.
References[edit]
- ↑ S.A. Wooldridge Mass extinctions past and present: unifying hypothesis, Biogeosciences Discuss, Copernicus volume 5 pages 2401–2423 biogeosciences
- ↑ cite doi|10.1073/pnas.0802812105}}
- ↑ cite doi|10.1073/pnas.0801921105}}
- ↑ 10.1130/GSAT01802A.1}}
- ↑ Martin P. S. (1963). The last 10,000 years: A fossil pollen record of the American Southwest, Tucson, AZ: Univ. Ariz. Press.
- ↑ Martin P. S. (1967). 'Prehistoric overkill. In Pleistocene extinctions: The search for a cause (ed. P.S. Martin and H.E. Wright)', New Haven: Yale Univ. Press.
- ↑ Martin P. S. (1989). 'Prehistoric overkill: A global model. In Quaternary extinctions: A prehistoric revolution (ed. P.S. Martin and R.G. Klein)', p. 354–404, Tucson, AZ: Univ. Arizona Press.
