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The Wolf's Tooth: Keystone Predators, Trophic Cascades, and Biodiversity, by Cristina Eisenberg
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Animals such as wolves, sea otters, and sharks exert a disproportionate influence on their environment; dramatic ecological consequences can result when they are removed from—or returned to—an ecosystem.
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In The Wolf's Tooth, scientist and author Cristina Eisenberg explores the concept of "trophic cascades" and the role of top predators in regulating ecosystems. Her fascinating and wide-ranging work provides clear explanations of the science surrounding keystone predators and considers how this notion can help provide practical solutions for restoring ecosystem health and functioning.
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Eisenberg examines both general concepts and specific issues, sharing accounts from her own fieldwork to illustrate and bring to life the ideas she presents. She considers how resource managers can use knowledge about trophic cascades to guide recovery efforts, including how this science can be applied to move forward the bold vision of rewilding the North American continent. In the end, the author provides her own recommendations for local and landscape-scale applications of what has been learned about interactive food webs.
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At their most fundamental level, trophic cascades are powerful stories about ecosystem processes—of predators and their prey, of what it takes to survive in a landscape, of the flow of nutrients. The Wolf's Tooth is the first book to focus on the vital connection between trophic cascades and restoring biodiversity and habitats, and to do so in a way that is accessible to a diverse readership.
- Sales Rank: #787696 in Books
- Brand: Brand: Island Press
- Published on: 2011-01-01
- Original language: English
- Number of items: 1
- Dimensions: 9.00" h x .80" w x 6.00" l, .80 pounds
- Binding: Paperback
- 272 pages
- Used Book in Good Condition
From Booklist
What do wolves have to do with the viability of trees? Or sea otters with kelp? Conservation biologist Eisenberg explains the far-reaching impact of such keystone species on their habitats in her debut book, which is rooted in the seminal work of Aldo Leopold, who traced the energy flow of the food chain, and the much debated “green world hypothesis,” which states that the world is green because predators keep herbivores in check. Eisenberg shares eye-opening revelations regarding the full scope and astonishing subtleties of predator/prey relationships and their immense ecological impact. Drawing on her own fieldwork with wolves, she observes that when they are eradicated, entire biotic communities are jeopardized, including aspen stands, in a process known as a trophic cascade. This waterfall or domino effect gravely diminishes terrestrial and marine ecosystems. Eisenberg cites vivid examples in Yellowstone, the Aleutian Islands, Amazon rain forests, and coral reefs that affirm the core truth about nature: it's all about relationships. An enlightening work that will advance understanding of biodiversity and how to sustain it. --Donna Seaman
Review
"An enlightening work that will advance understanding of biodiversity and how to sustain it." (Booklist)
"[S]trike[s] at the heart of what it means to be a biologist." (The Scientist)
"A wonderful example of the inspiration that comes from the natural history set." (BioScience)
"Fully referenced, meticulously researched and beautifully written, The Wolf's Tooth is an absorbing read for anyone interested in biodiversity, ecology, conservation or wildlife management....everyone with a serious interest in ecology, conservation, ecosystem management and/or biodiversity should read Eisenberg's book. I loved it, and developed an enhanced understanding of trophic cascades research and ecosystem change. In a world where habitats and communities are changing fast due to human action, such concepts as sequential faunal collapse and ecosystem degradation are going to become all too familiar." (Tetrapod Zoology)
"[C]olourful...The author's writing style is readable, enjoyable and occasionally extremely lyrical...an extremely interesting and enjoyable synthesis of the science of trophic cascades." (Oryx)
"The Wolf's Tooth is an engaging read which will be of wide interest to all ecologists, even those whose research is not focussed on predators." (Austral Ecology)
"A fascinating book. If you want to know more about the relationship between animals and the land they live in it's a worthwhile read with the potential to open many people's hearts, minds and eyes." (Wolf Print)
"Eisenberg is that rare writer who blends accessible descriptions of science with a lyrical sensitivity to the spiritual qualities of nature. Here, she uses these talents to present a highly readable summary of trophic cascades, the ripples felt through marine, terrestrial, and aquatic ecosystems when top predators are removed or reintroduced. The result of this blending of science and aesthetics is an engaging and even uplifting read. Highly recommended." (CHOICE)
"This engaging book explores the reasons we need big predators and explains the most revolutionary idea found in contemporary ecology: trophic cascades. For nearly a century ecologists have believed that nature is democratic, governed from the bottom up by the amount of solar energy converted to green biomass, the food of herbivores. Eisenberg makes the case for the alternative view—top-down control of ecosystems by predators and other keystone species—while diplomatically exploring a path for reconciling these disparate views." (Michael Soul� Professor Emeritus, University of California, Santa Cruz)
"Cristina Eisenberg weaves her observations as a scientist and her personal experiences afield into a resonant account about the web of life that links humans to the natural world. Grounded in best science, inspired by her intimate knowledge of the wolves she studies, she offers us a luminous portrait of the ecological relationships that are essential for our well-being in a rapidly changing world. The Wolf's Tooth calls for a conservation vision that involves rewilding the earth and honoring all our relations." (Brenda Peterson author of I Want to Be Left Behind: Finding Rapture Here on Earth)
"We've been practicing 'scientific' wildlife management for decades with a shaky grasp of how natural systems actually work. As the focus shifts, at last, from favored species toward biodiversity and community ecology, exciting new concepts such as trophic cascades and the keystone roles played by long-reviled predators come to the fore. This is the next level of conservation, as complex as it is crucial. You couldn't ask for a better guide than Cristina Eisenberg, blending tales from her own field studies with wonderfully clear explanations of the connections that keep nature vibrant and whole over time." (Douglas H. Chadwick wildlife biologist, conservation reporter, and author of The Wolverine Way)
"The Wolf's Tooth takes a venerable but misunderstood concept in ecology and renders it fresh, clear, and vital. In elegant prose drawn from her own deep experience in the field, Cristina Eisenberg has written a genuinely important contribution to the conservation biology canon. Besides showing how trophic cascades actually work, and how top predators can help rewild North America, her book is a fine primer for both theoretical and practical ecology." (Robert Michael Pyle author of Wintergreen and Chasing Monarchs)
"A scientist with a poet's command of language, Cristina Eisenberg writes with precision and passion . . . takes her reader on a breathtaking, sometimes heartbreaking tour of the planet from the Gulf of Maine to the Amazonian rain forests, the tropical coral reefs to old growth forests of the Northwest as well as rivers, lakes, and wetlands. I found the wealth of information not only accessible but riveting . . . Eisenberg's powerful, beautifully written book . . . has the potential to open many people's eyes, minds, and hearts." (Elizabeth Cunningham Huffington Post)
About the Author
Cristina Eisenberg is a conservation biologist at Oregon State University, College of Forestry, and Boone and Crockett Fellow who studies how wolves affect forest ecosystems throughout the West.
Most helpful customer reviews
25 of 25 people found the following review helpful.
Connections
By T. Hogan
The fundamental insight of ecology is that all of life is connected. Cristina Eisenberg's "The Wolf's Tooth" explores this interdependence through the lens of food webs in wild nature.
With the restoration of the gray wolf to Yellowstone National Park, the idea that ecosystems can be shaped by predators at the top of the food chain - trophic cascades - has gained increased attention from ecologists and conservationists. "The Wolf's Tooth" is a measured look at this idea of "top-down regulation," not overplaying the story, but still emphasizing its too-often-overlooked role in food web dynamics. One of the singular strengths of the book is in bringing focus to the role keystone species can play in restoring and rewilding landscapes.
Interweaving personal stories with a wealth of research, Eisenberg carefully guides the reader through the science in a manner accessible to the interested layperson. In the end, one is left with the truism that wild nature is not only more complicated than we think, it's more complicated than we can think. Getting there is a fascinating journey populated with willows, wolves, and warblers, as well as starfish and sea otters, conservationists and ranchers, and an intrepid field ecologist following the spoor of Aldo Leopold who always told his children, "it's all about relationships."
20 of 20 people found the following review helpful.
An interesting overview of the state of ecosystem management science
By Elisabeth Carey
This is a useful and interesting overview of the state of ecosystem management science, its history, complexities, and uncertainties. Eisenberg interlaces accounts of her own research on wolves, elks, aspens, and songbirds in Colorado, Wyoming, and elsewhere, with accounts of what others are doing or have done in similar settings and in very different ones. These include the Theodore Roosevelt Memorial Ranch in Montana, a working ranch that operates as a demonstration of how conservation and ranching can work in harmony, making a productive ranch in a wild landscape that includes bears, wolves, cougars, elk, mule deer, and other wildlife normal absent or barely hanging on in ranching territory.
The main point here is to explain the current state and history of ecological science. Eisenberg lays out the evidence of the importance of keystone predators, such as wolves in North America and sharks in the oceans, in maintaining a healthy level of biodiversity. One example: In the absence of wolves, elk overbrowse aspen saplings, leading to a lack of aspen in the middle age ranges, leading to a lack of the songbirds for whom a healthy density of mature and near-mature aspens are the preferred habitat. Over the last couple of decades, field research has strongly reinforced the importance of these keystone predators in maintaining the diversity that we need in order to continue to live comfortably on this planet.
But the top-down effects of keystone predators aren't the whole story. Food supply, disease, climate change, and other "bottom up" effects are also important, and interact with the top-down effects of keystone predators. In some circumstances one is more important, in other circumstances the other is more important--and the same ecosystem can flip from one to the other as its major force due to disruptions such as fires, volcanic eruptions, or human habitat destruction.
At times this is a bit dry, but other parts are lively and interesting, and overall this is very useful background for understanding environmental issues that make the news and affect our daily lives.
Recommended.
I received a free electronic galley of this book from the publisher via NetGalley.
17 of 18 people found the following review helpful.
inspirational and informative!
By Brian Mcaveney
I found The Wolf's Tooth very inspirational and informative. It continues to amaze me the impact one species can have on our environment. Being a landscape architect, the relationship between the animal and the land, and how keystone species can spur landscape restoration and shape landscapes really hits home with me and I find it greatly interesting. I highly recommend this book for anyone who cares for, and is passionate about, restoring our country's biodiversity and ecosystems. a great read!
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