Anthropocène

Admin · 27-02-2017 21:08:54

400,000-year-old teeth reveal first evidence of man-made pollution - and show the ‘caveman diet’ really was balanced

The teeth were found in the Qesem Cave near Tel Aviv, Israel
Plaque revealed cavemen inhaled smoke while roasting meat indoors
Teeth provided evidence of diet, which included plenty of nuts and seeds
Scientists found plant fibres which may have been used as toothpicks

http://www.dailymail.co.uk/sciencetech/ … anced.html

Admin · 24-02-2018 18:12:22

L’aube de l’Anthropocène – Jean-Jacques Hublin – Collège de France
Published 09/02/2017

http://www.theorie-de-tout.fr/2017/02/0 … de-france/

https://www.college-de-france.fr/site/j … -17h00.htm
Jean-Jacques Hublin présente également, en fin d’exposé, l’hypothèse des chercheurs William F. Ruddiman et Logan Mitchell, qui proposent de penser que la déforestation, l’irrigation et l’élevage, qui génèrent des émissions de CO2 et de méthane, pourraient avoir très tôt influencé le climat, par effet de serre d’origine anthropique, au point que l’activité humaine aurait pu participer à la stabilité climatique singulière de ces dernières 10 000 années (holocène).

Admin · 26-09-2018 08:52:27

Les tortues sont en train de disparaître et c'est très mauvais signe pour l'humanité
https://www.nouvelobs.com/planete/20180 … anite.html

Mais l'arrivée des hominidés a marqué le début de leur déclin. Déjà, il y a 2,6 millions d'années en Afrique, des représentants de la lignée humaine ont sur-utilisé les tortues comme moyen de subsistance. Si l'on compte toutes les espèces de tortues terrestres ayant existé depuis le début du Pleistocène (qui marque l'essor du genre Homo), on s'aperçoit que 69 d'entre elles ont disparu, sur 121.

Where Have All the Turtles Gone, and Why Does It Matter?
Jeffrey E Lovich, Joshua R Ennen, Mickey Agha, J Whitfield Gibbons, 2018
https://academic.oup.com/bioscience/adv … #121510290

Hominids have overused turtles as part of a subsistence diet since the development of Oldowan stone technology in Africa 2.6 million years ago (Turtle Extinctions Working Group 2015). As an example, of the 61 modern (living and extinct since 1500 CE) tortoises plus 60 extinct fossil species that have existed since the beginning of the Pleistocene, 57% (69 of 121) are now extinct. Being slow, terrestrial, and defenseless, tortoises became an easy mark for early, as well as more recent, hominids (White et al. 2010).

Megafaunal meiolaniid horned turtles survived until early human settlement in Vanuatu, Southwest Pacific
Arthur W. White, Trevor H. Worthy, Stuart Hawkins, Stuart Bedford, and Matthew Spriggs, 2010
http://www.pnas.org/content/107/35/15512

Admin · 26-09-2018 09:25:06

Les extinctions de mégafaune au pléistocène.

Humans rather than climate the primary cause of Pleistocene megafaunal extinction in Australia
Sander van der Kaars, Gifford H. Miller, Chris S. M. Turney, Ellyn J. Cook, Dirk Nürnberg, Joachim Schönfeld, A. Peter Kershaw & Scott J. Lehman
Nature Communications volume 8, Article number: 14142 (2017)
https://www.nature.com/articles/ncomms14142

At least 17,000 years of coexistence: Modern humans and megafauna at the Willandra Lakes, South-Eastern Australia
Michael C. Westaway, Jon Olley, RainerGrün, 2016
https://www.sciencedirect.com/science/a … 9116306011

23 July 2015
Megafauna extinction: DNA evidence pins blame on climate change
By Michael Slezak
https://www.newscientist.com/article/dn … te-change/

Climate change not to blame for late Quaternary megafauna extinctions in Australia
Frédérik Saltré, Marta Rodríguez-Rey, Barry W. Brook, Christopher N Johnson, Chris S. M. Turney, John Alroy, Alan Cooper, Nicholas Beeton, Michael I. Bird, Damien A. Fordham, Richard Gillespie, Salvador Herrando-Pérez, Zenobia Jacobs, Gifford H. Miller, David Nogués-Bravo, Gavin J. Prideaux, Richard G. Roberts & Corey J. A. Bradshaw
Nature Communications volume 7, Article number: 10511 (2016)
https://www.nature.com/articles/ncomms10511

Combination of humans, climate, and vegetation change triggered Late Quaternary megafauna extinction in the Última Esperanza region, southern Patagonia, Chile
Natalia A. Villavicencio & al., 2015
http://ib.berkeley.edu/labs/barnosky/Vi … graphy.pdf

Fossil Horses of South America
José Luis Prado María Teresa Alberdi
Phylogeny, Systematics and Ecology
https://www.researchgate.net/profile/Jo … nction.pdf

The archaeological record from southern Patagonia suggests that the timing of
horses extinction was controlled by a complex interaction between climate changes
that precipitated vegetation change, combined with growing human impacts
(Villavicencio et al. 2016). [...] Villavicencio et al. (2016) suggest that humans caused the mega-carnivore extinctions, either by
indirect interactions via appropriation more of the megafauna prey or by affecting
carnivores directly to make the region safer for humans

Admin · 03-10-2018 20:54:53

Non, l’humanité n’a pas toujours détruit l’environnement
3 octobre 2018 / Nicolas Casaux et Ana Minski
https://reporterre.net/Non-l-humanite-n … ironnement

Admin · 04-10-2018 10:16:22

Références enregistrées.

Admin · 04-10-2018 15:57:20

Les effets de l'activité humaine ont pu être aussi positifs :

Pastoralism may have delayed the end of the green Sahara
Chris Brierley, Katie Manning & Mark Maslin
Nature Communicationsvolume 9, Article number: 4018 (2018)
https://www.nature.com/articles/s41467-018-06321-y

Le pâturage semble plus favorable à la biodiversité que l'exclusion du bétail.
Plant biodiversity on shortgrass steppe after 55 years of zero, light, moderate, or heavy cattle grazing
Richard H. Hart, 2001
https://www.ars.usda.gov/ARSUserFiles/3 … 202001.pdf

Références enregistrées.

Admin · 16-10-2018 21:05:16

Earth Lost 2.5 Billion Years’ Worth of Evolutionary History in Just 130,000 Years
Even if humans curbed destructive actions within next 50 years, it would take between five to seven million years for mammal biodiversity to fully recover

Read more: https://www.smithsonianmag.com/smart-ne … 8SZfQLl.99
https://www.smithsonianmag.com/smart-ne … AriP7QC-64

Mammal diversity will take millions of years to recover from the current biodiversity crisis
Matt Davis, Søren Faurby, and Jens-Christian Svenning
http://www.pnas.org/content/early/2018/10/09/1804906115

1000 idées pour la Corse

#1 27-02-2017 21:08:54

Anthropocène

#2 24-02-2018 18:12:22

Re : Anthropocène

#3 26-09-2018 08:52:27

Re : Anthropocène

#4 26-09-2018 09:25:06

Re : Anthropocène

#5 03-10-2018 20:54:53

Re : Anthropocène

#6 04-10-2018 10:16:22

Re : Anthropocène

#7 04-10-2018 15:57:20

Re : Anthropocène

#8 16-10-2018 21:05:16

Re : Anthropocène

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