New study on holocene mammal extinction - Tree of Souls - An Avatar Community Forum
Tree of Souls - An Avatar Community Forum
Go Back   Tree of Souls - An Avatar Community Forum » General Forums » Environmentalism

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-03-2011, 10:20 PM
auroraglacialis's Avatar
Tsulfätu
auroraglacialis can now be called "doctor"
 
Join Date: Apr 2010
Location: Central Europe
Posts: 1,622
Default New study on holocene mammal extinction

There is a new study out regarding the extinction of large mammals after the last ice age. Often this is cited as an example of how human hunters drove species to extinction by overhunting. The study is pretty conclusive in that this was not the cause, but rather that it was a combination of climate change and land use by humans (e.g. agriculture) that brought the demise of some of them, while in other cases human influence could be excluded and in some cases humans even helped mammals.

Humans and climate contributed to extinctions of large Ice Age mammals, new study finds
Quote:
During the period when these animals were declining, the human population was beginning its boom, and was spreading out across not only the large-bodied mammals' cold-climate habitats, but also across their warm-climate refuges, changing the landscape with agriculture and other activities
...
if humans had any impact on musk-ox populations, it may have been to help sustain them
....
Although it is clear that climate change drives the dynamics of these species, we, as humans, have to take some of the blame for what happened during this most-recent cycle. It seems that our ancestors were able to change the landscape so dramatically that these animals were effectively cut off from what they needed to survive, even when the human population was small
__________________
Know your idols: Who said "Hitler killed five million Jews. It is the greatest crime of our time. But the Jews should have offered themselves to the butcher's knife. They should have thrown themselves into the sea from cliffs.". (Solution: "Mahatma" Ghandi)

Stop terraforming Earth (wordpress)

"Humans are storytellers. These stories then can become our reality. Only when we loose ourselves in the stories they have the power to control us. Our culture got lost in the wrong story, a story of death and defeat, of opression and control, of separation and competition. We need a new story!"
Reply With Quote
  #2  
Old 11-03-2011, 11:23 PM
Moco Loco's Avatar
Dandy Lion
Moco Loco is a lion in a low place
 
Join Date: Jun 2011
Location: New Orleans
Posts: 2,915
Send a message via Skype™ to Moco Loco
Default

I guess I would've assumed as much Nice article.
__________________

Reply With Quote
  #3  
Old 11-03-2011, 11:33 PM
Advent's Avatar
Mother Falcon
Advent is feeling bittersweet
 
Join Date: May 2010
Location: Somewhere home
Posts: 2,972
Default

Well, we're way overdue for an Ice age, so let's see if we survive that.
__________________
Reply With Quote
  #4  
Old 11-04-2011, 01:39 AM
Pa'li Makto's Avatar
Palulukan Makto
Pa'li Makto : Once ate an octopus.
 
Join Date: Mar 2010
Location: Australia
Posts: 3,909
Default

Nice article. It has some really interesting news in it.
Although as well many mammoths would of ended up getting stuck into tar pits.

This one is also really interesting: http://nimravid.wordpress.com/2008/0...er-tooth-diet/
It suggests that Sabre Tooths were more likely to eat similar sized prey then eat large ones like adult mammoths.

Quote:
Although the popular depiction of saber-tooth cats has them preying upon adult mammoths, their diets really were composed of more size-appropriate prey. Smilodon fatalis had a similar diet to the contemporary American lion, while Homotherium serum did prey upon mammoths, but took juveniles.
__________________
Always listening to The Orb: O.O.B.E...



My fanfic

"The man who learns only what others know is as ignorant as if he learns nothing.
The treasures of knowledge are the most rare, and guarded most harshly."
-Chronicle of the First Age


"Try to see the forest through her eyes."

Réalisant mon espoir, Je me lance vers la gloire. Je ne regrette rien. (Making my hope come true, I hurl myself toward glory. I regret nothing.)

Last edited by Pa'li Makto; 11-04-2011 at 01:57 AM.
Reply With Quote
  #5  
Old 11-04-2011, 05:11 PM
auroraglacialis's Avatar
Tsulfätu
auroraglacialis can now be called "doctor"
 
Join Date: Apr 2010
Location: Central Europe
Posts: 1,622
Default

Well there is the possibility that the last ice age was indeed the last one for a long time:
from the same site: Last of the glaciers; Effects of rising CO<sub>2</sub> delayed as much as 50 years, analysis finds
Quote:
A new analysis of climate change data and the effects of rising levels of the greenhouse gas carbon dioxides suggests that we are at the end of the period in Earth's history during which icy glaciers form. The study further suggests that the effects of rising CO2 levels is delayed by as much as 50 years, but global average temperature might be as much as 5 degrees higher than it is today by the year 2100.
__________________
Know your idols: Who said "Hitler killed five million Jews. It is the greatest crime of our time. But the Jews should have offered themselves to the butcher's knife. They should have thrown themselves into the sea from cliffs.". (Solution: "Mahatma" Ghandi)

Stop terraforming Earth (wordpress)

"Humans are storytellers. These stories then can become our reality. Only when we loose ourselves in the stories they have the power to control us. Our culture got lost in the wrong story, a story of death and defeat, of opression and control, of separation and competition. We need a new story!"
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Visit our partner sites:

      pandoraworld.ru



All times are GMT +1. The time now is 03:58 PM.

Based on the Planet Earth theme by Themes by Design


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
All images and clips of Avatar are the exclusive property of 20th Century Fox.