Ecology Of Feral Pigs On Santa Catalina Island
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Ecology Of Feral Pigs On Santa Catalina Island
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Author : Daniel W. Baber
language : en
Publisher:
Release Date : 1985
Ecology Of Feral Pigs On Santa Catalina Island written by Daniel W. Baber and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Suidae categories.
A feral pig population on Santa Catalina Island, California, was studied for 17 months beginning in July 1980. Density was estimated to be 21 to 34 pigs/km2 (95% confidence interval) using capture-recapture techniques. Dry season home ranges determined from radio-telemetry data were small and differed significantly between boars and sows. Patterns of habitat use according to vegetative community, topographic position, slope, aspect, elevation, vertical distance to water, and horizontal distance to water were examined. During the dry season, pigs preferred cool moist canyon bottoms, the result of both a physiological need for free water and behavioral responses to high environmental temperatures. Patterns of utilization during the wet season appeared to be primarily a function of food availability. Diets were primarily herbaceous, although small amounts of insects and vertebrate matter were eaten, and varied seasonally. Fruits and forbs were the most preferred foods in the dry season, while fruits, grasses and forbs were most preferred during the wet season. Seasonal differences in diets reflected changes in availability and phenology of plants. Seasonal trends were apparent in acid detergent fiber, cellulose, and crude protein levels in the diet, but not in acid detergent fiber, phosphorus, gross energy, digestible energy, protein digestibility and cellulose digestibility. Diets were characterized as high in fiber, low in energy and seasonally deficient in protein. Kidney fat and femur marrow fat indices indicated pigs declined in body condition in summer and fall, and improved in winter and spring. Optimal performance of pigs on Catalina appeared to be linked to the quantity of the acorn crop in early fall and the timing and duration of fall-winter rains. A seasonal pattern in breeding was evident, with conception apparently linked to both nutrition and photoperiod. Fertility declined in late spring and summer as photoperiod increased; onset of estrus and breeding in fall or winter were regulated by nutritional status of sows. Litter size as measured by fetal counts was 5.00 ± 0.36 S.E., and sows averaged 0.86 ± 0.17 S.E. litters over a 12 month period. Most sows were older than 1 year when they first conceived, and litter size increased from puberty and peaked at 2-3 years of age. Intrauterine mortality of fetuses averaged 25% and piglet mortality was estimated to be 58% prior to weaning. Mortality rates appeared to be higher for piglets born in summer than in winter or spring.
Feral Swine
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Author : C. Wayne Hanselka
language : en
Publisher:
Release Date : 1993
Feral Swine written by C. Wayne Hanselka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Feral livestock categories.
Invasive Wild Pigs In North America
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Author : Kurt C. VerCauteren
language : en
Publisher: CRC Press
Release Date : 2019-12-12
Invasive Wild Pigs In North America written by Kurt C. VerCauteren and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-12 with Nature categories.
Throughout North America, non-native wild pigs have become an ecologically and economically destructive invasive species. Though they are regarded as a popular game species by some, provide economic benefits to others, and are even engrained into societal heritage in some areas, wild pigs are responsible for an extraordinary amount of damage in both natural and anthropogenic systems throughout North America. As the density and range of wild pig habitat have substantially increased over the last several decades, the magnitude and diversity of their negative impacts are not yet fully realized or quantified. With various conflicts continually emerging, wild pig management is difficult and expensive to achieve. As a result, wild pigs represent one of the greatest wildlife management challenges North America faces in the 21st century. Invasive Wild Pigs in North America: Ecology, Impacts, and Management addresses all aspects of wild pig biology, ecology, damage, and management in a single comprehensive volume. It assimilates and organizes information on the most destructive introduced vertebrate species in the United States, establishing a foundation from which managers, researchers, policy makers, and other stakeholders can build upon into the future. The book provides comprehensive coverage of wild pig biology and ecology, techniques for management and research, and regional chapters. It is an asset to readers interested in wild pigs, the resources they impact, and how to mitigate those impacts, and establishes a vision of the future of wild pigs in North America. Features: Compiles valuable knowledge for a broad audience including wild pig managers, researchers, adversaries, and enthusiasts from across North America Addresses taxonomy, morphology, genetics, physiology, spatial ecology, population dynamics, diseases and parasites, and the naturalized niche of wild pigs Includes chapters on damage to resources, management, research methods, human dimensions and education, and policy and legislation Contains full color images and case studies of interesting and informative situations being created by wild pigs throughout North America Includes a chapter on wild pigs at the wildland–urban interface, a more recent and especially challenging issue
Population Characteristics Home Range And Habitat Use Of Feral Pigs On Santa Cruz Island California
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Author : John David Sterner
language : en
Publisher:
Release Date : 1990
Population Characteristics Home Range And Habitat Use Of Feral Pigs On Santa Cruz Island California written by John David Sterner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Invasive Wild Pigs In North America
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Author : Kurt C. VerCauteren
language : en
Publisher: CRC Press
Release Date : 2019-12-12
Invasive Wild Pigs In North America written by Kurt C. VerCauteren and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-12 with Nature categories.
Throughout North America, non-native wild pigs have become an ecologically and economically destructive invasive species. Though they are regarded as a popular game species by some, provide economic benefits to others, and are even engrained into societal heritage in some areas, wild pigs are responsible for an extraordinary amount of damage in both natural and anthropogenic systems throughout North America. As the density and range of wild pig habitat have substantially increased over the last several decades, the magnitude and diversity of their negative impacts are not yet fully realized or quantified. With various conflicts continually emerging, wild pig management is difficult and expensive to achieve. As a result, wild pigs represent one of the greatest wildlife management challenges North America faces in the 21st century. Invasive Wild Pigs in North America: Ecology, Impacts, and Management addresses all aspects of wild pig biology, ecology, damage, and management in a single comprehensive volume. It assimilates and organizes information on the most destructive introduced vertebrate species in the United States, establishing a foundation from which managers, researchers, policy makers, and other stakeholders can build upon into the future. The book provides comprehensive coverage of wild pig biology and ecology, techniques for management and research, and regional chapters. It is an asset to readers interested in wild pigs, the resources they impact, and how to mitigate those impacts, and establishes a vision of the future of wild pigs in North America. Features: Compiles valuable knowledge for a broad audience including wild pig managers, researchers, adversaries, and enthusiasts from across North America Addresses taxonomy, morphology, genetics, physiology, spatial ecology, population dynamics, diseases and parasites, and the naturalized niche of wild pigs Includes chapters on damage to resources, management, research methods, human dimensions and education, and policy and legislation Contains full color images and case studies of interesting and informative situations being created by wild pigs throughout North America Includes a chapter on wild pigs at the wildland–urban interface, a more recent and especially challenging issue
Wild Catalina Island
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Author : Frank J. Hein
language : en
Publisher: Arcadia Publishing
Release Date : 2013-03-26
Wild Catalina Island written by Frank J. Hein and has been published by Arcadia Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-26 with History categories.
A year-round escape for one million annual tourists, Catalina Island is gaining popularity as a world-class eco-destination. Eighty-eight percent of the island is under the watch of the Catalina Island Conservancy, which preserves, manages and restores the island's unique wild lands. Bison, foxes and bald eagles are its best-known inhabitants, but Catalina is home to more than sixty other animal and plant species that exist nowhere else on earth. And they are all within the boundaries of one of the world's most populous regions: Los Angeles County. Biologists Frank Hein and Carlos de la Rosa present a highly enjoyable tour through the fascinating origins, mysterious quirks and ecological victories of one of the West Coast's most remarkable places.
Ecology And Management Of Terrestrial Vertebrate Invasive Species In The United States
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Author : William C. Pitt
language : en
Publisher: CRC Press
Release Date : 2017-10-25
Ecology And Management Of Terrestrial Vertebrate Invasive Species In The United States written by William C. Pitt and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-25 with Nature categories.
Vertebrate invasive species are important ecologically, socially, and scientifically throughout much of the globe. However, the interdiction and options for management of invasive species are driven by localized regulation at the country or even state level and thus the management of species must be framed within that context. This book is focused around the management of invasive vertebrate species in the United States, although readers will find much of the material broadly applicable to invasive species in other regions. Vertebrate invasive species cause damage to agriculture, property, natural resources, and threaten human health and safety. However, most of these species occur in the United States resulting from human-mediated activities, often being released intentionally. For the first time, the wealth of scientific information about vertebrate invasive species in the United States is summarized and synthesized in a single volume to be easily accessible to ecologists and natural resource managers. With a focus on prominent terrestrial invasive species that have a history of policy and management and highlighting contemporary issues and management, this book consists of 18 chapters written by experts from across the United States. The first section of the book focuses on overarching policy and management topics associated with vertebrate invasive species; including biosecurity threats and risk assessment, policy and regulation, and the economics of their management. The second section provides in-depth reviews of noteworthy invasive mammals, birds, amphibians, and reptiles. After finishing this book, the reader should understand the complexity of managing invasive species, the unique challenges that each new species may present, and the steps forward that may decrease the impact of these species on the environment, human health, and the economy.
Channel Islands Research
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Author : Bobette V. Nelson
language : en
Publisher:
Release Date : 1989
Channel Islands Research written by Bobette V. Nelson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Biology categories.
Wildlife Review
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Author :
language : en
Publisher:
Release Date : 1986
Wildlife Review written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Wildlife conservation categories.
Animals Influence On The Landscape And Ecological Importance
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Author : Friedrich-Karl Holtmeier
language : en
Publisher: Springer
Release Date : 2014-10-22
Animals Influence On The Landscape And Ecological Importance written by Friedrich-Karl Holtmeier and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-22 with Science categories.
In its first English-language edition, this book introduces the many-faceted interactions of animal populations with their habitats. From soil fauna, ants and termites to small and large herbivores, burrowing mammals and birds, the author presents a comprehensive analysis of animals and ecosystems that is as broad and varied as all nature. Chapter 2 addresses the functional role of animals in landscape ecosystems, emphasizing fluxes of energy and matter within and between ecosystems, and the effects of animals on qualitative and structural habitat change. Discussion includes chapters on the role of animal population density and the impacts of native herbivores on vegetation and habitats from the tropics to the polar regions. Cyclic mass outbreaks of species such as the larch bud moth in Switzerland, the mountain pine beetle and the African red-billed weaver bird are described and analyzed. Other chapters discuss Zoochory – the dispersal of seeds by ants, mammals and birds – and the influence of burrowing animals on soil development and geomorphology. Consideration extends to the impact of feral domestic animals. Chapter 5 focuses on problems resulting from introduction of alien animals and from re-introduction of animal species to their original habitats, discusses the effects on ecosystems of burrowing, digging and trampling by animals. The author also addresses keystone species such as kangaroo rats, termites and beavers. Chapter 6 addresses the role of animals in landscape management and nature conservation, with chapters on the impact of newcomer species such as animals introduced into Australia, New Zealand and Europe, and the consequences of reintroduction of species to original habitat. It also discusses the carrying capacity of natural habit, public attitudes toward conversation and more. The final section ponders the effects of climate on interactions between animals and their habitats.