Habitat loss is one of the greatest threats to biodiversity today. It is estimated that habitat loss and degradation affect between 85 percent and 90 percent of all endangered birds, amphibians, and mammals. Habitat loss can put species in closer contact with human populations, which can cause a variety of problems.
One victim of habitat loss is the African wild dog (Lycaon pictus), which is one of the most endangered canids in the world. Traditionally, the African wild dog ranged throughout sub-Saharan Africa. Today, its range is drastically reduced and fragmented into smaller areas, mostly in arid zones and the savanna. The fragmented habitat is a particular problem for the African wild dog, which requires a large territory of at least 10,000 square kilometers (3,861 square miles) to support packs of between 10 and 40 dogs. The smaller territories created by habitat loss make it more difficult for the dogs to find adequate prey. As the habitat for other large predators, such as lions, is also reduced, the competition for prey and other resources is heightened.
Habitat fragmentation has put the African wild dog in close proximity to humans, which also puts a strain on their population. The dogs are considered a threat to livestock and are killed to protect livestock and game. They are also killed on roads that run through their territory and caught in traps intended for game animals. Because African wild dogs are genetically similar to domesticated dogs, they are vulnerable to diseases those dogs carry, such as rabies and distemper. Conservation efforts include educating the public about African wild dogs and creating wildlife corridors between wildlife reserves to extend their range.
family of mammals that includes dogs, wolves, and foxes.
organism threatened with extinction.
environment where an organism lives throughout the year or for shorter periods of time.
decline in species-specific habitat quality that leads to reduced survival and/or reproductive success in that species.
breaking up an environment where an organism lives throughout the year or for shorter periods of time.
the reduction or destruction of an ecosystem, making it less able to support its native species.
infectious disease caused by a virus, often associated with wild animals, with symptoms ranging from muscle spasms to death.
area connecting the habitat of two wildlife populations separated by human activity. Also called a green corridor.
area set aside and protected by the government or other organization to maintain wildlife habitat. Also called a nature preserve.