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Is there a "breaking point" in the number of animals and land needed?

Is there such a thing as too many animals put in an area to try to revitalize it? How large of an area is needed to keep the animals moving? If you keep a large number of animals in a space, there will eventually be a reversal, causing what we all think we know about livestock and farmland. So what's the correlation between number of animals and amount of land needed so that it is benificial, not detrimental?

Fasinacting research!

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  • Mar 28 2013: Australian settlers bought sheep and cattle. They cleared all the trees and planted English grasses for their animals. Before long Australia was turning into desert, top soil blown away and fields turning to widening gully erosion. My uncle was one of the first farmers to bring the Asian Brahman cattle here which did much better in heat and eating native grasses.

    Nowadays farmers are replanting trees and more native Australian grasses. The cloven shape hoof is very destructive on soils so needs to roam frequently and far ranging to let grasses and soil recover.

    In Alice Springs middle of Australian desert an Indigenous group grows lettuce and tomatoes under shadecloth hydroponically. Also selling/growing well are NATIVE 'bush tomato' kakadu plum, lemon aspen all taking less water and developed bananas and mangoes to grow in our climate with permaculture.

    Australias blue green algae, bank erosion, no water flowing into the third state of one of our largest rivers was due to too many farmers. Costing a lot of money now to buy back the water rights.

    Is the answer less cattle and more of the above ? I hear it takes a lot more water to grow cattle than fruit/vegetables.

    As a pensioner I cannot afford meat very often maybe once or twice a fortnight or none, have lost weight and feel much better now am almost a vegetarian.

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