Re: Cows and sheep

On Mar 4, 11:57?am, isw <i...@xxxxxxxxxxx> wrote:
Not sure if this is the proper group, but if not, I hope someone will
point me to a better one.

I'm looking for info on how the population of cows and sheep (and all
other grazing animals, if it's available) has changed over time -- at
least the past few hundred years; more if possible.

Pointers to information sources will be fine. Google was not at all
helpful, but perhaps it's because I didn't know how to frame the
question.

I just want to know how the total number of grazers has changed over
time. And yes, it's about bio-methane production.

thanks, Isaac

Table IV-7, here, is a start:

http://www.fao.org/WAIRDOCS/LEAD/X6120E/x6120e02.htm

To estimate changes in ruminant populations over time, you might
have to look at changes in land cover: forest vs. rangeland, for
instance.
"Grazing animals" is not what you want; "ruminants" are the sort of
animals that produce methane.

Re: "bio-methane production": that is a term I had not seen before,
and it confuses me, as I had thought that on this planet all
significant methane production was biological in origin.

What is the definition of "bio-methane", please, Isaac?

-
Daryl Krupa

.