Overhunting of an herbivore will firstly cause the decrease of that herbivore population. This decrease will affect predators that feed on that herbivore in a negative way. The plants that are in the diet of the herbivore may over populate (Does not affect plant). For example think about the zebra population in the Africa. If zebra population decreases because of overhunting, the lions, cheetahs... predators that feed on zebras will have the biggest damage as their is less food source.