11/9/2022 0 Comments Overpass road![]() ![]() ![]() For instance, found that road kills do not pose a significant threat to healthy populations but can be devastating to small, shrinking, or threatened populations. The first three effects (loss of habitat, road kill, and isolation from resources) exert pressure on various animal populations by reducing available resources and directly killing individuals in a population. Habitat fragmentation can lead to extinction or extirpation if a population's gene pool is restricted enough. For many years ecologists and conservationists have documented the adverse relationship between roads and wildlife identify four ways that roads and traffic detrimentally affect wildlife populations: (1) they decrease habitat amount and quality, (2) they increase mortality due to wildlife-vehicle collisions (road kill), (3) they prevent access to resources on the other side of the road, and (4) they subdivide wildlife populations into smaller and more vulnerable sub-populations (fragmentation). Scientists estimate that the system of roads in the United States affects the ecology of at least one-fifth of the land area of the country. ![]() Of these, roads have the most widespread and detrimental effects. Habitat fragmentation occurs when human-made barriers such as roads, railroads, canals, electric power lines, and pipelines penetrate and divide wildlife habitat. ![]()
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