New Models for Ecosystem Dynamics and Restoration


Book Description

As scientific understanding about ecological processes has grown, the idea that ecosystem dynamics are complex, nonlinear, and often unpredictable has gained prominence. Of particular importance is the idea that rather than following an inevitable progression toward an ultimate endpoint, some ecosystems may occur in a number of states depending on past and present ecological conditions. The emerging idea of “restoration thresholds” also enables scientists to recognize when ecological systems are likely to recover on their own and when active restoration efforts are needed. Conceptual models based on alternative stable states and restoration thresholds can help inform restoration efforts. New Models for Ecosystem Dynamics and Restoration brings together leading experts from around the world to explore how conceptual models of ecosystem dynamics can be applied to the recovery of degraded systems and how recent advances in our understanding of ecosystem and landscape dynamics can be translated into conceptual and practical frameworks for restoration. In the first part of the book, background chapters present and discuss the basic concepts and models and explore the implications of new scientific research on restoration practice. The second part considers the dynamics and restoration of different ecosystems, ranging from arid lands to grasslands, woodlands, and savannahs, to forests and wetlands, to production landscapes. A summary chapter by the editors discusses the implications of theory and practice of the ideas described in preceding chapters. New Models for Ecosystem Dynamics and Restoration aims to widen the scope and increase the application of threshold models by critiquing their application in a wide range of ecosystem types. It will also help scientists and restorationists correctly diagnose ecosystem damage, identify restoration thresholds, and develop corrective methodologies that can overcome such thresholds.




Island Geographies


Book Description

Islands and their environs – aerial, terrestrial, aquatic – may be understood as intensifiers, their particular and distinctive geographies enabling concentrated study of many kinds of challenges and opportunities. This edited collection brings together several emerging and established academics with expertise in island studies, as well as interest in geopolitics, governance, adaptive capacity, justice, equity, self-determination, environmental care and protection, and land management. Individually and together, their perspectives provide theoretically useful, empirically grounded evidence of the contributions human geographers can make to knowledge and understanding of island places and the place of islands. Nine chapters engage with the themes, issues, and ideas that characterise the borderlands between island studies and human geography and allied fields, and are contributed by authors for whom matters of place, space, environment, and scale are key, and for whom islands hold an abiding fascination. The penultimate chapter is rather more experimental – a conversation among these authors and the editor – while the last chapter offers timely reflections upon island geographies’ past and future, penned by the first named professor of island geography, Stephen Royle.




Islands


Book Description

Oceanic islands represent a set of systems in which biological diversity varies as a consequence of remoteness or size, not environment; they are also generally simpler than continental ecosystems. Islands therefore provide an opportunity to determine the direct effects of biological diversity on ecosystem function. The volume addresses the components of biological diversity on islands and their patterns of variation; the modern threats to the maintenance of biological diversity on islands; the consequences of island biology and its modification by humanity regarding aspects of ecosystem function; the global implications of islands for conservation; and how islands can help one to understand the processes inducing changes throughout the world.







Biological Invasions in New Zealand


Book Description

Human colonization of New Zealand has dramatically altered the resident biota, introduced numerous alien organisms to these once remote islands, and exported local species to the world. This book reviews invasions, investigates what controls the success of invaders and studies the consequences for ecosystems both on land and offshore. The book tests current theories about the success of invaders and evaluates principles for effective management of biological invasions worldwide.




Turning the Tide


Book Description

Includes papers and abstracts dealing with eradication of invasive species in Alaska, Australia, Baker Island, California, Christmas Island, Enderby and Rose Islands, Galapagos Islands, Hawaii, Howland Island, Japan, Jarvis Island, Laysan Island, Lord Howe Island, Mauritius, Mexico, Nauru, New Zealand, Northern Ireland, Northern Mariana Islands, Saint-Paul Island, Seychelles, West Indies.










Restoring Natural Capital


Book Description

How can environmental degradation be stopped? How can it be reversed? And how can the damage already done be repaired? The authors of this volume argue that a two-pronged approach is needed: reducing demand for ecosystem goods and services and better management of them, coupled with an increase in supply through environmental restoration. Restoring Natural Capital brings together economists and ecologists, theoreticians, practitioners, policy makers, and scientists from the developed and developing worlds to consider the costs and benefits of repairing ecosystem goods and services in natural and socioecological systems. It examines the business and practice of restoring natural capital, and seeks to establish common ground between economists and ecologists with respect to the restoration of degraded ecosystems and landscapes and the still broader task of restoring natural capital. The book focuses on developing strategies that can achieve the best outcomes in the shortest amount of time as it: • considers conceptual and theoretical issues from both an economic and ecological perspective • examines specific strategies to foster the restoration of natural capital and offers a synthesis and a vision of the way forward Nineteen case studies from around the world illustrate challenges and achievements in setting targets, refining approaches to finding and implementing restoration projects, and using restoration of natural capital as an economic opportunity. Throughout, contributors make the case that the restoration of natural capital requires close collaboration among scientists from across disciplines as well as local people, and when successfully executed represents a practical, realistic, and essential tool for achieving lasting sustainable development.




Rat Island


Book Description

Rat Island rises from the icy gray waters of the Bering Sea, a mass of volcanic rock covered with tundra, midway between Alaska and Siberia. Once a remote sanctuary for enormous flocks of seabirds, the island gained a new name when shipwrecked rats colonized, savaging the nesting birds by the thousands. Now, on this and hundreds of other remote islands around the world, a massive-and massively controversial-wildlife rescue mission is under way. Islands, making up just 3 percent of Earth's landmass, harbor more than half of its endangered species. These fragile ecosystems, home to unique species that evolved in peaceful isolation, have been catastrophically disrupted by mainland predators-rats, cats, goats, and pigs ferried by humans to islands around the globe. To save these endangered islanders, academic ecologists have teamed up with professional hunters and semiretired poachers in a radical act of conservation now bent on annihilating the invaders. Sharpshooters are sniping at goat herds from helicopters. Biological SWAT teams are blanketing mountainous isles with rat poison. Rat Island reveals a little-known and much-debated side of today's conservation movement, founded on a cruel-to-be-kind philosophy. Touring exotic locales with a ragtag group of environmental fighters, William Stolzenburg delivers both perilous adventure and intimate portraits of human, beast, hero, and villain. And amid manifold threats to life on Earth, he reveals a new reason to hope.