Human Population Growth and its Effect on Wildlife

Incessant human population growth is viewed as the leading cause of most of humanity’s scourges, such as poverty, war and starvation. While the wildlife conservation movement is valiantly attempting to save the world’s remaining diversity of life, this effort is overwhelmed by the demands of mounting numbers of people. The obvious solution of birth control and family planning remains largely unknown or ignored — a heritage of our ancient customs and religious beliefs.

Leading biologists, climate scientists, and environmental watchdogs all agree—humans’ own impact on the environment is without a doubt the number one cause of species loss. If you want to learn more about the impact of overpopulation on wildlife extinction refer to


Habitat destruction, fragmentation, and modification caused by human-led activities (i.e., industrial and residential development, logging, crop farming, livestock grazing, mining, road and dam building, and pesticide use) have taken an extreme toll on threatened and endangered wildlife populations at an alarming rate. With breeding grounds devastated and access to food and other resources diminishing, it’s no wonder that we’ve seen such a decline in species diversity.

Our rapid expansion—and even faster use of resources—has destroyed or disconnected vital wildlife habitat. Since Europeans first settled the continent, 27 ecosystem types have already declined by as much as 98%.7 Most of the species who call these ecosystems home are not adaptable to the human landscape that is left them. If our current development and population growth continue unchecked, the serious loss of animal species will continue for decades to come—unless we do something now to address the human threat.