front cover of Changing Precipitation Regimes and Terrestrial Ecosystems
Changing Precipitation Regimes and Terrestrial Ecosystems
A North American Perspective
Jake F. Weltzin
University of Arizona Press, 2003
By the beginning of the twenty-first century, few people could deny the reality of global change. But while most alarm has been over increasing temperatures, other changes are occurring in precipitation patterns—variations that may be due in part to global warming but also to factors such as changes in atmospheric circulation and land surfaces.

This volume provides a central source of information about this newly emerging area of global change research. It presents ongoing investigations into the responses of plant communities and ecosystems to the experimental manipulation of precipitation in a variety of field settings—particularly in the western and central United States, where precipitation is already scarce or variable. By exploring methods that can be used to predict responses of ecosystems to changes in precipitation regimes, it demonstrates new approaches to global change research and highlights the importance of precipitation regimes in structuring ecosystems.

The contributors first document the importance of precipitation, soil characteristics, and soil moisture to plant life. They then focus on the roles of precipitation amount, seasonality, and frequency in shaping varied terrestrial ecosystems: desert, sagebrush steppe, oak savanna, tall- and mixed-grass prairie, and eastern deciduous forest. These case studies illustrate many complex, tightly woven, interactive relationships among precipitation, soils, and plants—relationships that will dictate the responses of ecosystems to changes in precipitation regimes.

The approaches utilized in these chapters include spatial comparisons of vegetation structure and function across different ecosytems; analyses of changes in plant architecture and physiology in response to temporal variation in precipitation; experiments to manipulate water availability; and modeling approaches that characterize the relationships between climate variables and vegetation types. All seek to assess vegetation responses to major shifts in climate that appear to be occurring at present and may become the norm in the future.

As the first volume to discuss and document current and cutting-edge concepts and approaches to research into changing precipitation regimes and terrestrial ecosystems, this book shows the importance of developing reliable predictions of the precipitation changes that may occur with global warming. These studies clearly demonstrate that patterns of environmental variation and the nature of vegetation responses are complex phenomena that are only beginning to be understood, and that these experimental approaches are critical for our understanding of future change.

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Conserving Nature in Greater Yellowstone
Controversy and Change in an Iconic Ecosystem
Robert B. Keiter
University of Chicago Press, 2025
The story of how Yellowstone, established in 1872 as the world’s first national park, has become synonymous with nature conservation—and an examination of today’s challenges to preserve the region’s wilderness heritage.
 
For more than 150 years, the Yellowstone region—now widely known as the twenty-three million acre Greater Yellowstone Ecosystem—has played a prominent role in the United States’ nature conservation agenda. In this book, Robert B. Keiter, an award-winning public land law and policy expert, traces the evolution and application of fundamental ecological conservation concepts tied to Yellowstone.
 
Keiter’s book highlights both the conservation successes and controversies connected with this storied region, which has been enmeshed in change. During the 1980s, leaders in Yellowstone embraced ecosystem management concepts to recover a dwindling grizzly bear population and to support wolf reintroduction. Since then, management policies in the region’s two national parks and adjacent national forests have largely followed suit, prioritizing ecosystem-level conservation over industrial activity. Groundbreaking efforts are currently afoot to protect elk, deer, and pronghorn migration corridors and to maintain the park’s bison population, effectively expanding the scope of regional conservation initiatives. But in the face of explosive human population growth and related development pressures, new efforts must also account for the region’s privately owned lands along with accelerating recreational activities that present quite different problems.
 
Indeed, the Greater Yellowstone Ecosystem—extending across three states and twenty counties and embracing more than sixteen million acres of federal land as well as private and tribal lands —can only be characterized as a complex, jurisdictionally fragmented landscape. As Keiter makes clear, the quest for common ground among federal land managers, state officials, local communities, conservationists, ranchers, Indigenous tribes, and others is a vital, enduring task.
 
Exploring both notable conservation accomplishments and the ongoing challenges confronting this special place, Keiter’s book explains the many forces—scientific, political, economic, legal, cultural, climatic, and more—at work driving controversy and change across the region. But more than this, Conserving Nature in Greater Yellowstone shows us that the lessons gleaned from Yellowstone’s expansive nature conservation efforts are profoundly important for both the country and the world.
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Ecology and Conservation of the San Pedro River
Edited by Juliet C. Stromberg and Barbara Tellman
University of Arizona Press, 2009
One of the last undammed perennial rivers in the desert Southwest, the San Pedro River in southeastern Arizona illustrates important processes common to many desert riparian ecosystems. Although historic land uses and climatic extremes have led to aquifer depletion, river entrenchment, and other changes, the river still sustains a rich and varied selection of life. Resilient to many factors, portions of the San Pedro have become increasingly threatened by groundwater pumping and other impacts of population growth.

This book provides an extensive knowledge base on all aspects of the San Pedro, from flora and fauna to hydrology and human use to preservation. It describes the ecological patterns and processes of this aridland river and explores both the ongoing science-driven efforts by nonprofit groups and government agencies to sustain and restore its riparian ecosystems and the science that supports these management decisions.

An interdisciplinary team of fifty-seven contributors—biologists, ecologists, geomorphologists, historians, hydrologists, lawyers, political scientists—weave together threads from their diverse perspectives to reveal the processes that shape the past, present, and future of the San Pedro’s riparian and aquatic ecosystems. They review the biological communities of the San Pedro and the stream hydrology and geomorphology that affect its riparian biota. They then look at conservation and management challenges along three sections of the San Pedro, from its headwaters in Mexico to its confluence with the Gila River, describing legal and policy issues and their interface with science; activities related to mitigation, conservation, and restoration; and a prognosis of the potential for sustaining the basin’s riparian system.

These chapters demonstrate the complexity of the San Pedro’s ecological and hydrological conditions, showing that there are no easy answers to the problems—and that existing laws are inadequate to fully address them. Collectively, they offer students, professionals, and environmental advocates a better grasp of the San Pedro’s status as well as important lessons for restoring physical processes and biotic communities to rivers in arid and semiarid regions.
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Emergent Ecologies
Eben Kirksey
Duke University Press, 2015
In an era of global warming, natural disasters, endangered species, and devastating pollution, contemporary writing on the environment largely focuses on doomsday scenarios. Eben Kirksey suggests we reject such apocalyptic thinking and instead find possibilities in the wreckage of ongoing disasters, as symbiotic associations of opportunistic plants, animals, and microbes are flourishing in unexpected places. Emergent Ecologies uses artwork and contemporary philosophy to illustrate hopeful opportunities and reframe key problems in conservation biology such as invasive species, extinction, environmental management, and reforestation. Following the flight of capital and nomadic forms of life—through fragmented landscapes of Panama, Costa Rica, and the United States—Kirksey explores how chance encounters, historical accidents, and parasitic invasions have shaped present and future multispecies communities. New generations of thinkers and tinkerers are learning how to care for emergent ecological assemblages—involving frogs, fungal pathogens, ants, monkeys, people, and plants—by seeding them, nurturing them, protecting them, and ultimately letting go.
 
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front cover of Science and Ecosystem Management in the National Parks
Science and Ecosystem Management in the National Parks
Edited by William L. Halvorson and Gary E. Davis
University of Arizona Press, 1996
Our national parks are more than mere recreational destinations. They are repositories of the nation's biological diversity and contain some of the last ecosystem remnants needed as standards to set reasonable goals for sustainable development throughout the land. Nevertheless, public pressure for recreation has largely precluded adequate research and resource monitoring in national parks, and ignorance of ecosystem structure and function in parks has led to costly mistakes--such as predator control and fire suppression--that continue to threaten parks today. This volume demonstrates the value of ecological knowledge in protecting parks and shows how modest investments in knowledge of park ecosystems can pay handsome dividends.

Science and Ecosystem Management in the National Parks presents twelve case studies of long-term research conducted in and around national parks that address major natural resource issues. These cases demonstrate how the use of longer time scales strongly influence our understanding of ecosystems and how interpretations of short-term patterns in nature often change when viewed in the context of long-term data sets. Most importantly, they show conclusively that scientific research significantly reduces uncertainty and improves resource management decisions. Chosen by scientists and senior park managers, the cases offer a broad range of topics, including: air quality at Grand Canyon; interaction between moose and wolf populations on Isle Royale; control of exotic species in Hawaiian parks; simulation of natural fire in the parks of the Sierra Nevada; and the impact of urban expansion on Saguaro National Monument.

Because national parks are increasingly beset with conflicting views of their management, the need for knowledge of park ecosystems becomes even more critical--not only for the parks themselves, but for what they can tell us about survival in the rest of our world. This book demonstrates to policymakers and managers that decisions based on knowledge of ecosystems are more enduring and cost effective than decisions derived from uninformed consensus. It also provides scientists with models for designing research to meet threats to our most precious natural resources. "If we can learn to save the parks," observe Halvorson and Davis, "perhaps we can learn to save the world."
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Serengeti II
Dynamics, Management, and Conservation of an Ecosystem
Edited by A. R. E. Sinclair and Peter Arcese
University of Chicago Press, 1995
Serengeti II: Dynamics, Management, and Conservation of an Ecosystem brings together twenty years of research by leading scientists to provide the most most thorough understanding to date of the spectacular Serengeti-Mara ecosystem in East Africa, home to one of the largest and most diverse populations of animals in the world.

Building on the groundwork laid by the classic Serengeti: Dynamics of an Ecosystem, published in 1979 by the University of Chicago Press, this new book integrates studies of the ecosystem at every level—from the plants at the bottom of the visible food chain, to the many species of herbivores and predators, to the system as a whole. Drawing on new data from many long-term studies and from more recent research initiatives, and applying new theory and computer technology, the contributors examine the large-scale processes that have produced the Serengeti's extraordinary biological diversity, as well as the interactions among species and between plants and animals and their environment. They also introduce computer modeling as a tool for exploring these interactions, employing this new technology to test and anticipate the effects of social, political, and economic changes on the entire ecosystem and on particular species, and so to shape future conservation and management strategies.
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Serengeti IV
Sustaining Biodiversity in a Coupled Human-Natural System
Edited by Anthony R. E. Sinclair, Kristine L. Metzger, Simon A. R. Mduma, and John M. Fryxell
University of Chicago Press, 2015
The vast savannas and great migrations of the Serengeti conjure impressions of a harmonious and balanced ecosystem. But in reality, the history of the Serengeti is rife with battles between human and non-human nature. In the 1890s and several times since, the cattle virus rinderpest—at last vanquished in 2008—devastated both domesticated and wild ungulate populations, as well as the lives of humans and other animals who depended on them. In the 1920s, tourists armed with the world’s most expensive hunting gear filled the grasslands. And in recent years, violence in Tanzania has threatened one of the most successful long-term ecological research centers in history.

Serengeti IV, the latest installment in a long-standing series on the region’s ecology and biodiversity, explores the role of our species as a source of both discord and balance in Serengeti ecosystem dynamics. Through chapters charting the complexities of infectious disease transmission across populations, agricultural expansion, and the many challenges of managing this ecosystem today, this book shows how the people and landscapes surrounding crucial protected areas like Serengeti National Park can and must contribute to Serengeti conservation. In order to succeed, conservation efforts must also focus on the welfare of indigenous peoples, allowing them both to sustain their agricultural practices and to benefit from the natural resources provided by protected areas—an undertaking that will require the strengthening of government and education systems and, as such, will present one of the greatest conservation challenges of the next century.
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Sustaining Wildlands
Integrating Science and Community in Prince William Sound
Edited by Aaron J. Poe and Randy Gimblett
University of Arizona Press, 2017
When the Exxon Valdez oil tanker ran aground on Bligh Reef in Alaska in 1989 and spilled 11 million gallons of oil, it changed Prince William Sound forever. The catastrophe disrupted the region’s biological system, killing countless animals and poisoning habitats that to this day no longer support some of the local species. The effects have also profoundly altered the way people use this region.

Nearly three decades later, changes in recreation use run counter to what was initially expected. Instead of avoiding Prince William Sound, tourists and visitors flock there. Economic revitalization efforts have resulted in increased wilderness access as new commercial enterprises offer nature tourism in remote bays and fjords. This increased visitation has caused concerns that the wilderness may again be threatened—not by oil but rather by the very humans seeking those wilderness experiences.

In Sustaining Wildlands, scientists and managers, along with local community residents, address what has come to be a central paradox in public lands management: the need to accommodate increasing human use while reducing the environmental impact of those activities. This volume draws on diverse efforts and perspectives to dissect this paradox, offering an alternative approach where human use is central to sustaining wildlands and recovering a damaged ecosystem like Prince William Sound.

Contributors:

Brad A. Andres, Chris Beck, Nancy Bird, Dale J. Blahna, Harold Blehm, Sara Boario, Bridget A. Brown, Courtney Brown, Greg Brown, Milo Burcham, Kristin Carpenter, Ted Cooney, Patience Andersen Faulkner, Maryann Smith Fidel, Jessica B. Fraver, Jennifer Gessert, Randy Gimblett, Michael I. Goldstein, Samantha Greenwood, Lynn Highland, Marybeth Holleman, Shay Howlin, Tanya Iden, Robert M. Itami, Lisa Jaeger, Laura A. Kennedy, Spencer Lace, Nancy Lethcoe, Kate McLaughlin, Rosa H. Meehan, Christopher Monz, Karen A. Murphy, Lisa Oakley, Aaron J. Poe, Chandra B. Poe, Karin Preston, Jeremy Robida, Clare M. Ryan, Gerry Sanger, Bill Sherwonit, Lowell H. Suring, Paul Twardock, Sarah Warnock, and Sadie Youngstrom
 
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