Re: Fire shapes global vegetation

From: Val Lentz (vlentz_at_shaw.ca)
Date: 01/30/05 

Date: Sun, 30 Jan 2005 18:50:10 GMT

"Mario Petrinovich" <mario.petrinovic1@zg.htnet.hr> wrote in message
news:ctfg3n$pi8$1@ls219.htnet.hr...
> www.nature.com/news/2005/050124/full/050124-16.html
> "For example, a type of grassland consisting of warmth-loving
plants
> appeared in the tropics between 6 million and 8 million years ago, and
> quickly spread around the globe. This study suggests that the grassland's
> spread was primarily influenced by fire, says Bond, although it is not
known
> why there were more fires at that time."

This is what comes from the absence of cross studies...

The climate was changing, it was becoming drier. Instead of a constant high
humidity, there were times when there was little moisture in the air. This
allowed for more static in the atmosphere, this causes lightening to
develop. With drier ground conditions lightening causes fires. Thats why
there were more fires.

> Of course, around that time, a bipedal creature that feeds on
burned
> meat, emerged. -- Mario

Ya, taking advantage of the new abundance to scavange...

Val

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