Not only does relying on fewer crops have implications for diet and drought but homogenisation of the landscape in this manner decreases farmland biodiversity and reduces connectivity between quality habitat patches.
Hedgerows are vital dispersal corridors for hedgehogs, small mammals, amphibians and reptiles. According to Robinson and Sutherland 2002, since the Second World War, 50% of hedgerows have been removed in Britain. Given the current decline in hedgehogs and many other farmland species there should be greater emphasis on hedgerow restoration on Britain's farmland (and I am not even going to mention the effect of hedgerow removal on flooding!!)
The world food supply has grown increasingly dependent on a shrinking list of crops, such as wheat and maize, in the past 50 years with major consequences for human nutrition and global food security, according to a new study. The report from the International Centre for Tropical Agriculture (CIAT) in Colombia documents for the first time what experts have long suspected: over the last five decades, human diets around the world have grown more homogeneous and are showing no signs of slowing.