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Re: Methane production



>>The number of cattle that "replaced" them was only a miniscule percentage of 
>>the original number of bison.

Hmm. I'm not certain of this; there are supposed to be ~100 million head of 
cattle in the US. Presumably at least half of these are in former bison-range 
areas... 


(As of 2003, according to this: 
http://www.ext.nodak.edu/extnews/newsrelease/2003/101603/06livstk.htm there 
were 103.9 million cows in the US, with Texas, North Dakota, South Dakota, 
Minnesota, Montana and Wyoming having about 15 million each. So this would mean 
that there were actually more cattle than bison on the Plains...)