Wildlife habitat can be destroyed by development, farms, or mines; or degraded by invasive species, climate change, or pollution so it no longer supports native wildlife. Sprawl has increased the rate of habitat loss. One estimate says U.S. forest land the size of Pennsylvania will be consumed by expanding cities by 2050. But insects, birds, amphibians, reptiles, and mammals still all need habitat: food, water, cover, and places to raise their young. Unfortunately, with sprawl, native wildlife now has fewer places to call home. (Sources: Bringing Nature Home: How You Can Sustain Wildlife with Native Plants, Doug Tallamy, Timber Press, 2009; “Sustaining America’s Trees and Forests,” David J. Nowak, Susan M. Stein, Paula B. Randler, Eric J. Greenfield, Sara J. Comas, Mary A. Carr, and Ralph J. Alig, U.S. Forest Service; and “Habitat Loss,” National Wildlife Federation)
Many natural areas are now too small to sustain native species for long. The long-term survival of many species depends on recreating connections. Birds, turtles and reptiles, frogs and other amphibians, foxes, and other mammals all need safe passage through neighborhoods and places to raise their young within them. Corridors need to be protected where species are already using them. Wider, more continuous corridors work for a greater range of species. A recent study argues that organically-formed corridors are more successful than easements along a street or utility line. (Sources: Bringing Nature Home: How You Can Sustain Wildlife with Native Plants, Doug Tallamy, Timber Press, 2009; “Interview with Kristina Hill, Ph.D., Affiliate ASLA,” American Society of Landscape Architects (ASLA) interview series; and “Designing Wildlife Corridors: Wildlife Need More Complex Travel Plans,” Science Daily, 2008.)
Habitat loss, and the corresponding loss of biodiversity, doesn’t have to continue. Communities can connect their properties into networks of attractive, wildlife-friendly neighborhoods, cities, and regions. Starting with homeowners’ properties, fragmented habitats can be rewoven together, creating neighborhoods that are not only healthier for wildlife but also for people. Many residential landscape architects are helping to stem the losses by creating beautiful neighborhoods that provide habitat for many species. (Sources: Bringing Nature Home: How You Can Sustain Wildlife with Native Plants, Doug Tallamy, Timber Press, 2009; “Garden for Wildlife,” National Wildlife Federation; and Audubon At Home, Audubon Society)
Increased biodiversity has its own benefits: These landscapes maintain themselves without fertilizers or water that lawns need. Also, biodiverse residential landscapes are not only beautiful, but help families see the wonder of nature close to home. As scientists are now proving, just being out in nature, seeing plants, and hearing bird song reduces stress and improves mood. (Sources: Sustainable Sites Initiative (SITES). “Research Shows Nature Helps with Stress,” The Dirt blog; “Does Looking at Nature Make People Nicer?,” The Dirt blog; “ and The Restorative Effects of Nature in Cities,” The Dirt blog)
This animation is designed to be a basic introduction to sustainable design concepts, created for the general public and students of all ages. We look forward to receiving your comments.