"John Savage" wrote in message

The first step to insulating agriculture against extended periods of zero
rainfall is to get rid of all hoofed animals from unimproved grazing land.

Sounds great in theory but unfortunately it is not necessarily true on the
ground. At least with hoofed animals there is some hope of managing
stocking density: not so with the so-called soft footed natives which, in
current numbers, do a LOT of damage.