Large-scale fences can cause ecological meltdown, study shows
Scientists have reviewed the ‘pros and cons’ of large scale fencing and argue that fencing should only be used as a last resort. Wildlife fences are constructed for a variety of reasons including to prevent the spread of diseases, protect wildlife from poachers, and to help manage small populations of threatened species. Human-wildlife conflict is another common reason for building fences: Wildlife can damage valuable livestock, crops, or infrastructure, some species carry diseases of agricultural concern, and a few threaten human lives. At the same time, people kill wild animals for food, trade, or to defend lives or property, and human activities degrade wildlife habitat. Separating people and wildlife by fencing can appear to be a mutually bene cial way to avoid such detrimental effects.