Sharon K. Collinge – författare

Many infectious diseases of recent concern, including malaria, cholera, plague, and Lyme disease, have emerged from complex ecological communities, involving multiple hosts and their associated parasites. Several of these diseases appear to be influenced by human impacts on the environment, such as intensive agriculture, clear-cut forestry, and habitat loss and fragmentation; such environmental impacts may affect many species that occur at trophic levels below or above the hostcommunity. These observations suggest that the prevalence of both human and wildlife diseases may be altered in unanticipated ways by changes in the structure and composition of ecological communities. Predicting the epidemiological ramifications of such alteration in community composition will require strengthening the current union between community ecology and epidemiology.

Many infectious diseases of recent concern, including malaria, cholera, plague, and Lyme disease, have emerged from complex ecological communities, involving multiple hosts and their associated parasites. Several of these diseases appear to be influenced by human impacts on the environment, such as intensive agriculture, clear-cut forestry, and habitat loss and fragmentation; such environmental impacts may affect many species that occur at trophic levels below or above the host community. These observations suggest that the prevalence of both human and wildlife diseases may be altered in unanticipated ways by changes in the structure and composition of ecological communities. Predicting the epidemiological ramifications of such alteration in community composition will require strengthening the current union between community ecology and epidemiology. Disease Ecology highlights exciting advances in theoretical and empirical research towards understanding the importance of community structure in the emergence of infectious diseases. To date, research on host-parasite systems has tended to explore a limited set of community interactions, such as a community of host species infected by a single parasite species, or a community of parasites infecting a single host. Less effort has been devoted to addressing additional complications, such as multiple-host-multiple-parasite systems, sequential hosts acting on different trophic levels, alternate hosts with spatially varying interactions, effects arising from trophic levels other than those of hosts and parasites, or stochastic effects resulting from small population size in at least one alternate host species. The chapters in this book illustrate aspects of community ecology that influence pathogen transmission rates and disease dynamics in a wide variety of study systems. The innovative studies presented in Disease Ecology communicate a clear message: studies of epidemiology can be approached from the perspective of community ecology, and students of community ecology can contribute significantly to epidemiology.

This wide-ranging collection of essays is intended to provoke both thought and action. The pieces collected here explore a variety of issues facing the American West—disappearing Native American languages, deteriorating air quality, suburban sprawl, species loss, grassland degradation, and many others—and suggest steps toward “healing.” More than “dealing with” or “solving,” according to the editors, healing addresses not just symptoms but their underlying causes, offering not just a temporary cure but a permanent one.The signs of illness and trauma can seem omnipresent in today’s West: land and soil disrupted from mining, overgrazing, logging, and farming; wildlife habitat reduced and fragmented; native societies disturbed and threatened; open space diminished by cities and suburbs; wilderness destroyed by roads and recreation-seekers. But as these essays suggest, the “treatment program” for healing the West has many healthful side effects. Engaging in the kinds of projects suggested by contributors is therapeutic not only for the environment but for participants as well. Restoration, repair, and recovery can counter symptoms of despair with concentrated doses of promise and possibility.The more “lesions” the West has, this book suggests, the more opportunities there are for westerners to revive and ultimately cure the ailing patient they have helped to create. The very idea of restoring the West to health, contributors and editors contend, unleashes our imaginations, sharpens our minds, and gives meaning to the ways we choose to live our lives. At the same time, acknowledging the profound difficulties of the work that lies ahead immunizes us against our own arrogance as we set about the task of healing the West.