Complex sentence: Fox Glove was very effective by allowing native species' populations to increase due to the local eradication of introduced predators, namely foxes and feral cats, although the control of feral cats is much more difficult as the cats favour live prey.
Split into simpler sentences: Fox Glove was very effective in allowing native species' populations to increase. This was due to the local eradication of introduced predators, namely foxes and feral cats, although the control of feral cats is much more difficult, as the cats favor live prey.