| The loss of species from ecological communities, defaunation, is primarily driven by human activity. |
| At least one study has shown that leaf-chewing insects took longer to recover from defaunation than did other more mobile taxonomic groups, such as homopterans. |
| The loss of animals from ecological communities is also known as defaunation. |
| Methane belching from cattle can be reduced with genetic selection, immunization, rumen defaunation, diet modification and grazing management, among others. |
| Defaunation of mammals is primarily driven by anthropogenic factors, such as poaching and habitat destruction, though there are efforts to combat this. |
