Natural vegetation is often cleared to allow troops to either move through an area more easily or to improve visibility so that they are able to detect approaching enemy forces that has an effect on wildlife. Masses of displaced people living in temporary settlements can result in erosion and deforestation.
Wildlife reserves and other natural protected areas are particularly vulnerable as they are very often situated on international borders and offer an abundance of natural resources and cover. Habitat destruction can threaten vulnerable species – especially those with limited ranges – and even cause them to become locally extinct.
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Over-Exploitation of Natural Resources
Over-exploitation of natural resources can occur as a result of subsistence use of resources or commercial exploitation of resources.
Wars typically leave countries in a state of upheaval and as a result, local rural communities are very often unable to cultivate food crops during wartime, having to turn to wild plant foods and bush meat as an alternative food source to meet their nutritional needs in order to survive.
Displaced people often harvest wildlife while they are living away from home, but may continue to do so after they return to their communities, as other sources of food may still be non-existent for some time.
In combat areas hunting of wildlife generally occurs on a grand scale – with larger animals be targeted more frequently – in order to provide food for military troops.
As many large animals, such as the critically endangered mountain gorilla, have complex social hierarchies and slow reproductive rates, when animals are killed at a rate that exceeds their ability to reproduce it can devastate wildlife populations.
Commercial exploitation and illegal trade of natural resources such as diamonds and timber, and poached ivory and rhino horn is often undertaken to fund military operations, weapons and ammunition.
Exploiting commercially lucrative resources with a readily available source of weapons fuels a vicious cycle that allows armed militia to control the area, natural resources and their network of illegal trade operations.
The proliferation in weapons, notably high-powered automatic rifles that are far more effective at killing larger game than traditional spears, often results in a rapid escalation in the slaughtering of wildlife for the bushmeat trade.
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The environment can be polluted directly as a result of conflict, or may occur indirectly as a result of human activities in sensitive areas.
The Persian Gulf War saw massive amounts of oil being deliberately dumped into Persian Gulf in efforts to prevent troops from coming ashore. As the war progressed, oil wells in Kuwait were set alight by fleeing Iraqi soldiers.
The resulting oil pollution and atmospheric pollution had severe environmental consequences, severely impacting local wildlife, especially marine life and seabirds.
Spraying of the herbicide Agent Orange in Indochina in efforts to defoliate vegetation during the Vietnam War resulted in toxic pollutants contaminating the vegetation, soil and water, with dire consequences for both the environment and the wildlife and human populations living in these areas.
Pollution can also occur indirectly as a result of war. For example, surface water and ground water sources may become contaminated when large groups of displaced people are forced to settle in temporary refugee camps that lack adequate sanitation and where waste is allowed to accumulate due to lack of services.
This can result in nutrient enrichment of water bodies, leading to low oxygen levels and fish die-offs, and can also cause disease outbreaks to spread rapidly amongst humans living in cramped, unsanitary conditions, with little or no access to medical care or medicines. Some diseases can also be passed on to wildlife with devastating effects.