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During the lead-up to the Spanish-American War, U.S. botanists looked with envy at the progress of European scientists, who had access to tropical colonies. They pushed for the creation of their own “American tropical laboratory.” Chapter 1 traces the origins of the U.S. tropical laboratory movement; the resulting rental of the station at Cinchona, Jamaica; and the first decade of research there by members of the founding generation of U.S. ecologists. This history reveals their range of motivations for engaging in tropical research, from the 1890s through the outbreak of World War I and the opening of the Panama Canal in 1914. The study of tropical organisms—with their diversity of forms and adaptations so foreign to those familiar with temperate flora and fauna—seemed to offer a path to a truly general understanding of living things. At the same time, U.S. botanists saw tropical research as the key to a place on the international scientific stage. U.S. botanists did not wait for state­sponsored colonial science. Driven by a distinct set of intellectual, cultural, and professional concerns, they were ready to filibuster for science to acquire an outpost for research in the Caribbean.

Consciousness of tropical biodiversity exploded onto the scene in the 1980s following the 1986 National Forum on BioDiversity. Biodiversity was not a new concept to biologists, however. U.S. scientists’ engagement with life in the tropics already stretched back a century. During this time, scientists had struggled with questions of the biological differences of the tropics—especially its richness in species—and at the same time entangled themselves in U.S. corporate and government efforts to exploit tropical resources. American Tropics argues that both the key scientific concepts and the values embedded in the modern biodiversity discourse had significant precedents in biologists’ involvement in U.S. encounters with the tropical world over the course of the twentieth century, centered on the circum­Caribbean region. This book argues that the ideas, attitudes, and institutions forged at field sites in the colonies and neocolonies of the circum­Caribbean are crucial for understanding the emergence of this new paradigm in biology and conservation at the end of the century. Long before the BioDiversity Forum extended such ideas to the globe, U.S. biologists had begun both to articulate fundamental biological questions raised by the diversity of tropical life and to argue for its potential as a natural resource.

Tropical stations drew hundreds of U.S. biologists, few of whom would have attempted a rigorous tropical expedition on their own. In the 1920s through 1940s, Barro Colorado Island (BCI) in particular became a model tropical forest. Chapter 3 demonstrates how the station’s location on an island nature reserve within the Panama Canal Zone enabled unprecedented control over space and scientific labor. BCI was transformed into a scientific site by the removal of Panamanian settlers and through descriptions of the site as undisturbed and representative of tropical nature. It was maintained for science by the labor of Panamanian workers and through the development of a host of new techniques and technologies for the prolonged observation of tropical life. There, biologists were able to develop practices to monitor and census living tropical organisms as part of a complex, dynamic ecological community. BCI became increasingly accessible and observable—but only in certain ways and only to certain classes of people.