The mosquito breeds in semipermanent and permanent pools, ponds, lakes and swamps. Spring peepers live primarily in forests and regenerating woodlands near ephemeral or semipermanent wetlands. This allows them to build semipermanent or permanent villages. In many cases, OMZs are permanent or semipermanent areas. In this distinction, only a tympanostomy involves tympanostomy tubes and creates a semipermanent stoma. Graham has also toured with the group as a semipermanent vocalist, along with Charlotte James. The "semipermanent chamber group" focused on contemporary ballet works by new choreographers.