DIY

Counteracting the threats to the biological communities that support life on Earth is a huge task, but there are also many ways in which we as individuals can make real contributions to preserving biodiversity. Conservation biologists have used the theory of island biogeography to develop strategies for preserving biodiversity. Small islands of habitat cannot support large predators, but they can provide refuges for smaller species, and many small islands can be strung together to support larger, mobile species. Almost all of us can help by creating islands of biodiversity wherever we live. Soil In land-based ecosystems, biodiversity begins with the soil. Recent science has shown that J.I. Rodale and other organic pioneers were right-- the soil is a living organism, and synthetic fertilizers and pesticides do kill the soil. The growth of all the plants we see above ground--from lettuce seedlings to redwood trees--results from a symbiosis between the plants and the fungi, bacteria, insects, and other soil-dwelling organisms. For a greater understanding of the microbial life in the soil, see Teaming with Microbes: The Organic Gardener's Guide to the Soil Food Web by Jeff Lowenfels and Wayne Lewis.