Slide 25: Change in vegetation structure
Here are the runs without herbivores, carnivores and elephants. In the first (low impact) scenario, we see an increasing amount of grass primary production, although the rate of increase tapers somewhat by 2080 in response to decreasing rainfall. In the high impact scenario below the grass primary production initially increases very rapidly, but after mid century the rapidly decreasing water balance causes a drop in production. By 2080, the grass primary production is likely to be less than current levels. In both scenarios tree production drops.