MinuteEarth3.02 млн
Следующее
Опубликовано 21 января 2016, 4:40
There have supposedly been five “mass extinctions” in Earth’s history, but the real story is more complex than that.
LEARN MORE
**************
To learn more about this topic, start your googling with these keywords:
- Mass Extinction Event: a significant, global decrease in the diversity of life
- "Big 5": The five biggest mass extinction events since the Cambrian explosion of Life 550 million years ago
- Biodiversity Crisis: Like a mass extinction, a biodiversity crisis is a marked depletion in diversity in the fossil record. Some scientists prefer to call the late-Devonian extinction a "biodiversity crisis" because a lack of speciation contributed to the loss in diversity just as much as extinction did.
- Diversity curve: A line chart that shows the diversity of life (usually by genera, but sometimes by species or family) over time
- Lagerstatte: a deposit of sedimentary rock that contains a profound number of fossils, often with excellent preservation
- Shareholder Quorum Subsampling: A statistical method that corrects for some of the biases in the fossil record, allowing scientists to generate more accurate diversity curves
CREDITS
*********
Script Writer: Emily Elert (twitter:@eelert)
Script Editor: Kate Yoshida (twitter:@KateYoshida)
Video Illustrator: Ever Salazar (twitter:@eversalazar)
Video Director: Emily Elert (twitter:@eelert)
With Contributions From: Henry Reich (twitter:@minutephysics), Alex Reich (twitter:@alexhreich), Peter Reich
Music by: Nathaniel Schroeder: soundcloud.com/drschroeder
Thanks also to our Patreon patrons:
Today I Found Out, Maarten Bremer, Mark Roth, Jeff Straathof, Tony Fadell, Ahmed, Muhammad Shifaz, Vidhya Krishnaraj, Luka Leskovsek, Duhilio Patino, Alberto Bortoni, Valentin, Nicholas Buckendorf, and Antoine Coeur
SUPPORT MINUTEEARTH
**************************
If you like what we do, you can help us!:
- Become our patron: patreon.com/MinuteEarth
- Our merch: dftba.com/minuteearth
- Our book: minuteearth.com/books
- Share this video with your friends and family
- Leave us a comment (we read them!)
OUR LINKS
************
Youtube | youtube.com/MinuteEarth
TikTok | tiktok.com/@minuteearth
Twitter | twitter.com/MinuteEarth
Instagram | instagram.com/minute_earth
Facebook | facebook.com/Minuteearth
Website | minuteearth.com
Apple Podcasts| podcasts.apple.com/us/podcast/...
REFERENCES
**************
Alroy, J. (2015). Personal Communication.
Alroy, J. (2008). Dynamics of origination and extinction in the marine fossil record. Proceedings of the National Academy of Sciences, 11536-11542. Retrieved April 8, 2015, from ncbi.nlm.nih.gov/pmc/articles/...
Alroy, J. (n.d.). Accurate and precise estimates of origination and extinction rates. Paleobiology, 40(3), 374-397. Retrieved September 20, 2015, from nceas.ucsb.edu/~alroy/pdfs/201...
Benton, M. (2003). When life nearly died: The greatest mass extinction of all time. New York: Thames & Hudson.
Barrett, Paul M. (2015). Personal Communication.
Fossilworks: Gateway to the Paleobiology Database.
fossilworks.org/?page=paleodb
Lloyd, GT, Smith, AB and Young, JR, (2011). Quantifying the deep-sea rock and fossil record bias using coccolithophores. Geological Society Special Publication, 358 (1), 167-177.
Mcghee, G., Clapham, M., Sheehan, P., Bottjer, D., & Droser, M. (2013). A new ecological-severity ranking of major Phanerozoic biodiversity crises. Palaeogeography, Palaeoclimatology, Palaeoecology, 370, 260-270.
Raup, D. (1979). Biases in the fossil record of species and genera. Bulletin of the Carnegie Museum of Natural History 13: 85–91.
Raup, D., & Sepkoski, J. (1982). Mass Extinctions in the Marine Fossil Record. Science, 215(4539), 1501-1503.
Vermeij, GJ. (2015). Personal Communication.
LEARN MORE
**************
To learn more about this topic, start your googling with these keywords:
- Mass Extinction Event: a significant, global decrease in the diversity of life
- "Big 5": The five biggest mass extinction events since the Cambrian explosion of Life 550 million years ago
- Biodiversity Crisis: Like a mass extinction, a biodiversity crisis is a marked depletion in diversity in the fossil record. Some scientists prefer to call the late-Devonian extinction a "biodiversity crisis" because a lack of speciation contributed to the loss in diversity just as much as extinction did.
- Diversity curve: A line chart that shows the diversity of life (usually by genera, but sometimes by species or family) over time
- Lagerstatte: a deposit of sedimentary rock that contains a profound number of fossils, often with excellent preservation
- Shareholder Quorum Subsampling: A statistical method that corrects for some of the biases in the fossil record, allowing scientists to generate more accurate diversity curves
CREDITS
*********
Script Writer: Emily Elert (twitter:@eelert)
Script Editor: Kate Yoshida (twitter:@KateYoshida)
Video Illustrator: Ever Salazar (twitter:@eversalazar)
Video Director: Emily Elert (twitter:@eelert)
With Contributions From: Henry Reich (twitter:@minutephysics), Alex Reich (twitter:@alexhreich), Peter Reich
Music by: Nathaniel Schroeder: soundcloud.com/drschroeder
Thanks also to our Patreon patrons:
Today I Found Out, Maarten Bremer, Mark Roth, Jeff Straathof, Tony Fadell, Ahmed, Muhammad Shifaz, Vidhya Krishnaraj, Luka Leskovsek, Duhilio Patino, Alberto Bortoni, Valentin, Nicholas Buckendorf, and Antoine Coeur
SUPPORT MINUTEEARTH
**************************
If you like what we do, you can help us!:
- Become our patron: patreon.com/MinuteEarth
- Our merch: dftba.com/minuteearth
- Our book: minuteearth.com/books
- Share this video with your friends and family
- Leave us a comment (we read them!)
OUR LINKS
************
Youtube | youtube.com/MinuteEarth
TikTok | tiktok.com/@minuteearth
Twitter | twitter.com/MinuteEarth
Instagram | instagram.com/minute_earth
Facebook | facebook.com/Minuteearth
Website | minuteearth.com
Apple Podcasts| podcasts.apple.com/us/podcast/...
REFERENCES
**************
Alroy, J. (2015). Personal Communication.
Alroy, J. (2008). Dynamics of origination and extinction in the marine fossil record. Proceedings of the National Academy of Sciences, 11536-11542. Retrieved April 8, 2015, from ncbi.nlm.nih.gov/pmc/articles/...
Alroy, J. (n.d.). Accurate and precise estimates of origination and extinction rates. Paleobiology, 40(3), 374-397. Retrieved September 20, 2015, from nceas.ucsb.edu/~alroy/pdfs/201...
Benton, M. (2003). When life nearly died: The greatest mass extinction of all time. New York: Thames & Hudson.
Barrett, Paul M. (2015). Personal Communication.
Fossilworks: Gateway to the Paleobiology Database.
fossilworks.org/?page=paleodb
Lloyd, GT, Smith, AB and Young, JR, (2011). Quantifying the deep-sea rock and fossil record bias using coccolithophores. Geological Society Special Publication, 358 (1), 167-177.
Mcghee, G., Clapham, M., Sheehan, P., Bottjer, D., & Droser, M. (2013). A new ecological-severity ranking of major Phanerozoic biodiversity crises. Palaeogeography, Palaeoclimatology, Palaeoecology, 370, 260-270.
Raup, D. (1979). Biases in the fossil record of species and genera. Bulletin of the Carnegie Museum of Natural History 13: 85–91.
Raup, D., & Sepkoski, J. (1982). Mass Extinctions in the Marine Fossil Record. Science, 215(4539), 1501-1503.
Vermeij, GJ. (2015). Personal Communication.
Свежие видео