All over the planet, organisms of many species are appearing outside of their natural habitats—often carried by that particularly peripatetic species Homo sapiens. This book marks the first comprehensive attempt to address problems posed by expanding populations of exotic plant and animal species in the Sonoran Desert and adjacent grasslands and riparian areas. It describes the arrival and spread of non-native species as diverse as rats and saltcedar, covering both their impacts and the management of those impacts. It is estimated that as much as 60 percent of the vegetative cover of the Sonoita Creek-Patagonia Reserve, the first Nature Conservancy area designated in Arizona, is dominated by exotic plants, and that introduced fish pose a recurrent threat to the native fish of that area. Meanwhile at the Grand Canyon, invasives such as tamarisk, red brome, carp, and catfish are pervasive either in the Colorado River or in the patches of desert scrub along its shores. Throughout the Sonoran Desert and adjacent areas, from islands in the Sea of Cortés to desert grasslands, some six hundred species of non-native plants and animals have become established, with bullfrogs and Mediterranean grasses now common where they once never existed. The book brings together contributors from academia, government, and nonprofit organizations, including such experts as Gary Paul Nabhan, Richard Mack, and Alberto Búrquez-Montijo. They review historic and even prehistoric origins of non-native species—not only exotic plants, amphibians, and mammals but also insects, fish, and birds. They then examine significant problems in each major subregion and ecosystem and discuss control efforts. The volume contains the first compiled list of more than 500 naturalized exotic species in the Sonoran region. Invasive species issues are rapidly emerging as major environmental concerns both locally and worldwide. This book will assist professionals—ecologists, conservation biologists, and policy makers—involved in invasive species control in the Southwest and will be a rich resource for all concerned with protecting native species and their habitats.

All over the planet, organisms of many species are appearing outside of their natural habitatsÑoften carried by that particularly peripatetic species Homo sapiens. This book marks the first comprehensive attempt to address problems posed by expanding populations of exotic plant and animal species in the Sonoran Desert and adjacent grasslands and riparian areas. It describes the arrival and spread of non-native species as diverse as rats and saltcedar, covering both their impacts and the management of those impacts. It is estimated that as much as 60 percent of the vegetative cover of the Sonoita Creek-Patagonia Reserve, the first Nature Conservancy area designated in Arizona, is dominated by exotic plants, and that introduced fish pose a recurrent threat to the native fish of that area. Meanwhile at the Grand Canyon, invasives such as tamarisk, red brome, carp, and catfish are pervasive either in the Colorado River or in the patches of desert scrub along its shores. Throughout the Sonoran Desert and adjacent areas, from islands in the Sea of CortŽs to desert grasslands, some six hundred species of non-native plants and animals have become established, with bullfrogs and Mediterranean grasses now common where they once never existed. The book brings together contributors from academia, government, and nonprofit organizations, including such experts as Gary Paul Nabhan, Richard Mack, and Alberto Bœrquez-Montijo. They review historic and even prehistoric origins of non-native speciesÑnot only exotic plants, amphibians, and mammals but also insects, fish, and birds. They then examine significant problems in each major subregion and ecosystem and discuss control efforts. The volume contains the first compiled list of more than 500 naturalized exotic species in the Sonoran region. Invasive species issues are rapidly emerging as major environmental concerns both locally and worldwide. This book will assist professionalsÑecologists, conservation biologists, and policy makersÑinvolved in invasive species control in the Southwest and will be a rich resource for all concerned with protecting native species and their habitats.

This thoroughly revised, entirely rewritten edition of what is the essential reference on California’s diverse and ever-changing vegetation now brings readers the most authoritative, state-of-the-art view of California’s plant ecosystems available. Integrating decades of research, leading community ecologists and field botanists describe and classify California’s vegetation types, identify environmental factors that determine the distribution of vegetation types, analyze the role of disturbance regimes in vegetation dynamics, chronicle change due to human activities, identify conservation issues, describe restoration strategies, and prioritize directions for new research. Several new chapters address statewide issues such as the historic appearance and impact of introduced and invasive plants, the soils of California, and more.

The invasive species Tamarix first attracted the public eye in the 1990's when it was suspected of contributing to widespread drought and wildfires in the Western United States. Once purported to consume as much water as entire cities, very few plant species have received as much scientific, public, and political discussion and debate as Tamarix. Written by 44 of the field's most prominent scholars and scientists, this volume compiles 25 essays on this fascinating species--its biology, ecology, politics, management, and the ethical issues involved with designating a particular species as "good" or "bad". The book analyzes the controversy surrounding the Tamarisk's role in our ecosystems and what should be done about it.

In Unnatural Landscapes, Ceiridwen Terrill combines lucid science writing with first-person tales of adventure to provide an introduction to invasion ecology and restoration management.

The landscapes, cultures, and cuisines of deserts in the Middle East and North America have commonalities that have seldom been explored by scientistsÑand have hardly been celebrated by society at large. Sonoran Desert ecologist Gary Nabhan grew up around Arab grandparents, aunts, uncles, and cousins in a family that has been emigrating to the United States and Mexico from Lebanon for more than a century, and he himself frequently travels to the deserts of the Middle East. In an era when some Arabs and Americans have markedly distanced themselves from one another, Nabhan has been prompted to explore their common ground, historically, ecologically, linguistically, and gastronomically. Arab/American is not merely an exploration of his own multicultural roots but also a revelation of the deep cultural linkages between the inhabitants of two of the worldÕs great desert regions. Here, in beautifully crafted essays, Nabhan explores how these seemingly disparate cultures are bound to each other in ways we would never imagine. With an extraordinary ear for language and a truly adventurous palate, Nabhan uncovers surprising convergences between the landscape ecology, ethnogeography, agriculture, and cuisines of the Middle East and the binational Desert Southwest. There are the words and expressions that have moved slowly westward from Syria to Spain and to the New World to become incorporatedÑfaintly but recognizablyÑinto the language of the people of the U.S.ÐMexico borderlands. And there are the flavorsÑpiquant mixtures of herbs and spicesÑthat have crept silently across the globe and into our kitchens without our knowing where they came from or how they got here. And there is much, much more. We also learn of others whose work historically spanned these deserts, from Hadji Ali (ÒHi JollyÓ), the first Moslem Arab to bring camels to America, to Robert Forbes, an Arizonan who explored the desert oases of the Sahara. These men crossed not only oceans but political and cultural barriers as well. We are, we recognize, builders of walls and borders, but with all the talk of ÒhomelandÓ today, Nabhan reminds us that, quite often, borders are simply lines drawn in the sand.