Historical data and ecological studies of droughts of the past (Paleoclimatology) shows a long history of drought. It is nothing new and as the climate has changed over the millennia (Always has and always will) the plant community adapted to those changing environmental conditions. Climate change is currently and going back to the beginning has always been a determining factor in the development of the plant and animal community. Man is at fault primarily because of his influence or contribution to the poor health of the rangeland.
Yes, drought is much more severe now than in the past, not because the amount of rainfall is less than in the past. It is more severe because our rangelands are in much poorer condition (bare ground-unthrifty plants with weak root systems, loss of the drought tolerant plants, brush encroachment– the list goes on and on.)
When drought occurred prior to mans influence, the wildlife either moved to other areas or died of starvation or lack of water. This resulted in ‘destocking ‘of the land and possibly disruption of the normal migration patterns of the migratory animals. (Moved to other less drought-stricken areas.) This destocking and the length of the ‘rest period’ was greatly influenced by the length of the dry spell. Recovery of those drought-stricken lands of the past was probably very quick thanks to natures quick response to controlling numbers of animals and rapid response to drought management protocol. (Move or die) The length of the drought was a determining factor as to how many numbers were ‘cut from the herd’ and the length of rest until restocked. Take note that this description of natures ‘drought management’ procedure is the basis of many currently productive grazing management programs. (Over simplified statement for certain)
Man, being more concerned with his survival than the land or the animals and originally his lack of understanding of the design of natures ‘drought protocol’ has resulted in the current severity of ongoing droughts. The understanding and knowledge of these drought protocols is now clearly understood by many producers and the lack of that understanding should no longer be a part of any rangeland management process.
Photo is of a transplanted Eastern Gama Grass. Long lost and to a great extent ‘extinct’ from the rangeland in my area. The result of grazing management practices that resulted in loss of the deep-rooted tall grasses that were much more drought tolerant than today’s plant community of the rangeland and the loss of a continuous cover of grasses and forbs over the soil. (Note the density of cover in the photo. Yes, this spot has had some help in the form of irrigation to aid in establishing the Eastern Gama, not a true rangeland condition) With tender loving care (Proper grazing management) and time, this plant could be a part of the basis of recovering the rangeland to its former drought resistant dominance.
THE BETTER IT GETS THE FASTER IT GETS BETTER