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Author: John Terborgh
Publisher: Island Press
ISBN: 1597268194
Category : Science
Languages : en
Pages : 487
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Book Description
Trophic cascades—the top-down regulation of ecosystems by predators—are an essential aspect of ecosystem function and well-being. Trophic cascades are often drastically disrupted by human interventions—for example, when wolves and cougars are removed, allowing deer and beaver to become destructive—yet have only recently begun to be considered in the development of conservation and management strategies. Trophic Cascades is the first comprehensive presentation of the science on this subject. It brings together some of the world’s leading scientists and researchers to explain the importance of large animals in regulating ecosystems, and to relate that scientific knowledge to practical conservation. Chapters examine trophic cascades across the world’s major biomes, including intertidal habitats, coastal oceans, lakes, nearshore ecosystems, open oceans, tropical forests, boreal and temperate ecosystems, low arctic scrubland, savannas, and islands. Additional chapters consider aboveground/belowground linkages, predation and ecosystem processes, consumer control by megafauna and fire, and alternative states in ecosystems. An introductory chapter offers a concise overview of trophic cascades, while concluding chapters consider theoretical perspectives and comparative issues. Trophic Cascades provides a scientific basis and justification for the idea that large predators and top-down forcing must be considered in conservation strategies, alongside factors such as habitat preservation and invasive species. It is a groundbreaking work for scientists and managers involved with biodiversity conservation and protection.
Author: John Terborgh
Publisher: Island Press
ISBN: 1597268194
Category : Science
Languages : en
Pages : 487
Get Book Here
Book Description
Trophic cascades—the top-down regulation of ecosystems by predators—are an essential aspect of ecosystem function and well-being. Trophic cascades are often drastically disrupted by human interventions—for example, when wolves and cougars are removed, allowing deer and beaver to become destructive—yet have only recently begun to be considered in the development of conservation and management strategies. Trophic Cascades is the first comprehensive presentation of the science on this subject. It brings together some of the world’s leading scientists and researchers to explain the importance of large animals in regulating ecosystems, and to relate that scientific knowledge to practical conservation. Chapters examine trophic cascades across the world’s major biomes, including intertidal habitats, coastal oceans, lakes, nearshore ecosystems, open oceans, tropical forests, boreal and temperate ecosystems, low arctic scrubland, savannas, and islands. Additional chapters consider aboveground/belowground linkages, predation and ecosystem processes, consumer control by megafauna and fire, and alternative states in ecosystems. An introductory chapter offers a concise overview of trophic cascades, while concluding chapters consider theoretical perspectives and comparative issues. Trophic Cascades provides a scientific basis and justification for the idea that large predators and top-down forcing must be considered in conservation strategies, alongside factors such as habitat preservation and invasive species. It is a groundbreaking work for scientists and managers involved with biodiversity conservation and protection.
Author: Stephen R. Carpenter
Publisher: Cambridge University Press
ISBN: 9780521566841
Category : Nature
Languages : en
Pages : 404
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Book Description
This 1993 book documents the importance of trophic cascades in aquatic ecology.
Author: Arian D. Wallach
Publisher:
ISBN:
Category : Introduced organisms
Languages : en
Pages : 8
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Book Description
Efforts to control introduced species are often risky, expensive and ineffective. Trophic cascades theory elucidates why some introduced species cause harm. Apex predators limit population irruptions of both native and introduced species. ?Restoring apex predators can help promote native?non-native coexistence. Novel assemblages of native and introduced species characterize a growing proportion of ecosystems worldwide. Some introduced species have contributed to extinctions, even extinction waves, spurring widespread efforts to eradicate or control them. We propose that trophic cascade theory offers insights into why introduced species sometimes become harmful, but in other cases stably coexist with natives and offer net benefits. Large predators commonly limit populations of potentially irruptive prey and mesopredators, both native and introduced. This top-down force influences a wide range of ecosystem processes that often enhance biodiversity. We argue that many species, regardless of their origin or priors, are allies for the retention and restoration of biodiversity in top-down regulated ecosystems. -- Highlights.
Author: Camille T. Dungy
Publisher: Wesleyan University Press
ISBN: 0819577200
Category : Poetry
Languages : en
Pages : 89
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Book Description
“A soulful reckoning for our twenty-first century, held in focus through echoes of the past and future, but always firmly rooted in now.” —Yusef Komunyakaa, Pulitzer Prize-winning poet Winner of the Colorado Book Award in Poetry (2018) In this fourth book in a series of award-winning survival narratives, Dungy writes positioned at a fulcrum, bringing a new life into the world even as her elders are passing on. In a time of massive environmental degradation, violence and abuse of power, a world in which we all must survive, these poems resonate within and beyond the scope of the human realms, delicately balancing between conflicting loci of attention. Dwelling between vibrancy and its opposite, Dungy writes in a single poem about a mother, a daughter, Smokin’ Joe Frazier, brittle stars, giant boulders, and a dead blue whale. These poems are written in the face of despair to hold an impossible love and a commitment to hope. A readers companion will be available at wesleyan.edu/wespress/readerscompanions. “Dungy asks how we can survive despair and finds her answers close to the earth.” —Diana Whitney, The Kenyon Review “Trophic Cascade frequently bears witness—to violence, to loss, to environmental degradation—but for Dungy, witnessing entails hope.” —Julie Swarstad Johnson, Harvard Review Online “Tension. Simmering. Beneath her matter-of-fact, easy-going, sit-yourself-down, let-me-tell-it-like-it-is clarifying. And her power we take deadly seriously.” —Matt Sutherland, Foreword Reviews “[Trophic Cascade] asks us, in spite of the pain or difficulty of being human today, to find joy and vibrancy in our experiences.” —Elizabeth Flock, PBS Newshour
Author: Patricia Newman
Publisher: Millbrook Press (Tm)
ISBN: 1512426318
Category : Juvenile Nonfiction
Languages : en
Pages : 60
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Book Description
"Marine biologist Brent Hughes discovered a surprising connection between sea otters and sea grass at an estuary in northern California. Follow science in action as Hughes conducts the research that led to this major discovery"--Provided by publisher.
Author: Adam Nicolson
Publisher: Farrar, Straus and Giroux
ISBN: 0374721289
Category : Nature
Languages : en
Pages : 298
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Book Description
Adam Nicolson explores the marine life inhabiting seashore rockpools with a scientist’s curiosity and a poet’s wonder in this beautifully illustrated book. The sea is not made of water. Creatures are its genes. Look down as you crouch over the shallows and you will find a periwinkle or a prawn, a claw-displaying crab or a cluster of anemones ready to meet you. No need for binoculars or special stalking skills: go to the rocks and the living will say hello. Inside each rock pool tucked into one of the infinite crevices of the tidal coastline lies a rippling, silent, unknowable universe. Below the stillness of the surface course different currents of endless motion—the ebb and flow of the tide, the steady forward propulsion of the passage of time, and the tiny lifetimes of the rock pool’s creatures, all of which coalesce into the grand narrative of evolution. In Life Between the Tides, Adam Nicolson investigates one of the most revelatory habitats on earth. Under his microscope, we see a prawn’s head become a medieval helmet and a group of “winkles” transform into a Dickensian social scene, with mollusks munching on Stilton and glancing at their pocket watches. Or, rather, is a winkle more like Achilles, an ancient hero, throwing himself toward death for the sake of glory? For Nicolson, who writes “with scientific rigor and a poet’s sense of wonder” (The American Scholar), the world of the rock pools is infinite and as intricate as our own. As Nicolson journeys between the tides, both in the pools he builds along the coast of Scotland and through the timeline of scientific discovery, he is accompanied by great thinkers—no one can escape the pull of the sea. We meet Virginia Woolf and her Waves; a young T. S. Eliot peering into his own rock pool in Massachusetts; even Nicolson’s father-in-law, a classical scholar who would hunt for amethysts along the shoreline, his mind on Heraclitus and the other philosophers of ancient Greece. And, of course, scientists populate the pages; not only their discoveries, but also their doubts and errors, their moments of quiet observation and their thrilling realizations. Everything is within the rock pools, where you can look beyond your own reflection and find the miraculous an inch beneath your nose. “The soul wants to be wet,” Heraclitus said in Ephesus twenty-five hundred years ago. This marvelous book demonstrates why it is so. Includes Color and Black-and-White Photographs
Author: Suzanne Slade
Publisher: Capstone
ISBN: 1404863974
Category : Juvenile Nonfiction
Languages : en
Pages : 14
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Book Description
Discusses the ocean ecosystem and the role of the sea otter as a keystone species in helping to maintain it, describing the otter's place on the food chain and what would happen if the sea otter were to become extinct.
Author: James A. Estes
Publisher: Univ of California Press
ISBN: 0520377494
Category : Nature
Languages : en
Pages : 294
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Book Description
"Many of the findings in the book . . . are classics of ecology. . . . A rare and delightful insight into timely science."—Jane Lubchenco, Nature "Estes's refreshing narrative deftly weaves rigorous science with personal reflection to create an absorbing and introspective read that is equal parts memoir, ecological textbook, and motivational guidebook for young ecologists."—Science To newly minted biologist James Estes, the sea otters he was studying in the leafy kelp forests off the coast of Alaska appeared to have an unbalanced relationship with their greater environment. Gorging themselves on the sea urchins that grazed among the kelp, these small charismatic mammals seemed to give little back in return. But as Estes dug deeper, he unearthed a far more complex relationship between the otter and its underwater environment, discovering that otters play a critical role in driving positive ecosystem dynamics. While teasing out the connective threads, he began to question our assumptions about ecological relationships. These questions would ultimately inspire a lifelong quest to better understand the surprising complexity of our natural world and the unexpected ways we discover it. Serendipity tells the story of James Estes’s life as a naturalist and the concepts that have driven his interest in researching the ecological role of top-level predators. Using the relationships between sea otters, kelp, and sea urchins as a touchstone, Estes retraces his investigations of numerous other species, ecosystems, and ecological processes in an attempt to discover why ecologists can learn so many details about the systems in which they work and yet understand so little about the broader processes that influence these systems. Part memoir, part natural history, and deeply inquisitive, Serendipity will entertain and inform readers as it raises thoughtful questions about our relationship with the natural world.
Author: Peter M. Kareiva
Publisher: Oxford University Press
ISBN: 0198808976
Category : Nature
Languages : en
Pages : 209
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Book Description
This novel text assembles some of the most intriguing voices in modern conservation biology. Collectively they highlight many of the most challenging questions being asked in conservation science today, each of which will benefit from new experiments, new data, and new analyses. The book's principal aim is to inspire readers to tackle these uncomfortable issues head-on. A second goal is to be reflective and consider how the field has reacted to challenges to orthodoxy, and to what extent have or can these challenges advance conservation science. Furthermore, several chapters discuss how to guard against confirmation bias. The overall goal is that this book will lead to greater conservation of ecosystems and biodiversity by harnessing the engine of constructive scientific scepticism in service of better results.
Author: John C. Moore
Publisher: Cambridge University Press
ISBN: 1107182115
Category : Business & Economics
Languages : en
Pages : 445
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Book Description
This book presents new approaches to studying food webs, using practical and policy examples to demonstrate the theory behind ecosystem management decisions.
