Here is the word perfect reply I recieved from Amoli...
elephant populations from northern KNP eat more grass (~40%) during the dry season than do their southern counterparts (~10%). The wet-season diets of elephants from northern and southern KNP include similar amounts of grass (~50%), because elephants in the south, but not in the north, ate significantly more grass during this time. Although habitat differences in KNP appear to account partially for variations in elephant diets, the specific influence of each habitat type on diet selectivity is not clear
Well done Amoli.
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