Caro, T.M. and M.K. Laurenson: "Ecological and Genetic Factors in Conservation: A Cautionary Tale," Science, vol. 263, January 28, 1994, pages 485–86. An interesting discussion of how data gained in captivity may not reflect results observed in the wild.

Daily, G.C. and P.R. Erlich: "Population, Sustainability, and the Earth’s Carrying Capacity," BioScience, September 1992, pages 761–70. An argument for sustaining the growing human population without undermining the planet’s potential for supporting future generations.

Durning, A.: How Much Is Enough? Norton, New York, 1995. An insightful and disturbing look at our high-consumption society and at where this behavior seems to be leading us.

Hanski, I., T. Pakkala, M. Kuussaari, and G. Lei: "Metapopulation Persistence of an Endangered Butterfly in a Fragmented Landscape," Oikos, vol. 72, 1995, pages 21-28. The critical role of migration in preserving highly fragmented populations.

Krebs, C.: "Two Paradigms of Population Regulation," Wildlife Res., vol. 22, 1995, pages 1-10. An excellent overview of population regulation by a prominent ecologist.

Lowe, V. P. W.: "Population Dynamics of the Red Deer (Cervus elaphus) on Rhum," Journal of Animal Ecology, vol. 38, 1969, pages 425-57. A clear example of how a cohort life history is constructed from field data.

Raven, P., L. Berg, and G. Johnson. Environment, Saunders, Philadelphia, 1995. An environmental science text by the authors of this text. Perhaps not surprisingly, we think it quite a good one.

Saunders, D., R. Hobbs, and C. Margules: "Biological Consequences of Ecosystem Fragmentation: A Review," Conservation Biology, vol. 5, 1991, pages 18–32. A good statement of how fragmentation, by reducing effective population size, can increase the dangers of extinction.