Download or read book Animal Genetics Erosion Endangerment Extinctions and Conservation Strategies written by Feyisa Lemessa and published by . This book was released on 2023-09-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seminar paper from the year 2023 in the subject Biology - Genetics / Gene Technology, grade: 3.95, Haramaya University (CAES), course: Animal and Range Scineces, language: English, abstract: There is an urgent need to document the diversity of our livestock genetic resources and to design strategies for their sustainable conservation and the main objective of this review is to exploring. The world watch list for domestic animal diversity documents more than 6 300 breeds and 7616 breeds of livestock belonging to 30 domesticated species. These breeds were developed following domestication and natural and human selection over the past 12 000 years. The current number of breeds is likely an underestimation since a large proportion of indigenous livestock populations of the developing world, where most animal genetic resources are found today; have yet to be described at phenotypic and genetic levels. The predominant species include cattle, sheep, goats, pigs, chickens, horses and buffalo. Several other domesticated animals like camels, donkeys, elephants, reindeer and rabbits are also valuable to different regions of the world. Cattle, sheep, chickens, are predominantly found all over the world, while goats and pigs are less uniformly distributed. Livestock populations have evolved a unique adaptation to their agricultural production system and agro ecological environments. Their genetic diversity has provided the material for the very successful breeding improvement programmes of the developed world in the 19th and 20th century. This represents a unique resource to respond to the present and future needs of livestock production, both in developed and developing countries. Recognizes The well importance of animal production for food security and rural livelihoods and particularly AnGR supply over 30% of total human requirements for food and agriculture and contribute to the livelihood of 70% of the world's rural poor. However, the purposes of raising livestock go bey

Download or read book Animal Genetics Erosion Endangerment Extinctions and Conservation Strategies written by Feyisa Lemessa and published by GRIN Verlag. This book was released on 2023-09-21 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seminar paper from the year 2023 in the subject Biology - Genetics / Gene Technology, grade: 3.95, Haramaya University (CAES), course: Animal and Range Scineces, language: English, abstract: There is an urgent need to document the diversity of our livestock genetic resources and to design strategies for their sustainable conservation and the main objective of this review is to exploring. The world watch list for domestic animal diversity documents more than 6 300 breeds and 7616 breeds of livestock belonging to 30 domesticated species. These breeds were developed following domestication and natural and human selection over the past 12 000 years. The current number of breeds is likely an underestimation since a large proportion of indigenous livestock populations of the developing world, where most animal genetic resources are found today; have yet to be described at phenotypic and genetic levels. The predominant species include cattle, sheep, goats, pigs, chickens, horses and buffalo. Several other domesticated animals like camels, donkeys, elephants, reindeer and rabbits are also valuable to different regions of the world. Cattle, sheep, chickens, are predominantly found all over the world, while goats and pigs are less uniformly distributed. Livestock populations have evolved a unique adaptation to their agricultural production system and agro ecological environments. Their genetic diversity has provided the material for the very successful breeding improvement programmes of the developed world in the 19th and 20th century. This represents a unique resource to respond to the present and future needs of livestock production, both in developed and developing countries. Recognizes The well importance of animal production for food security and rural livelihoods and particularly AnGR supply over 30% of total human requirements for food and agriculture and contribute to the livelihood of 70% of the world’s rural poor. However, the purposes of raising livestock go beyond their direct output functions and include other significant economic and cultural roles. These include savings, insurance, cyclical buffering, accumulation and diversification, as well as various cultural roles related to status and the obligations of their owners.

Download or read book Genetics and the Extinction of Species written by Laura Landweber and published by Princeton University Press. This book was released on 1999-07-21 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this collection, a team of leading biologists demonstrates why the burgeoning field of conservation biology must continue to rely on the insights of population genetics if we are to preserve the diversity of living species.

Download or read book A Practical Guide for Genetic Management of Fragmented Animal and Plant Populations written by Richard Frankham and published by Oxford University Press, USA. This book was released on 2019 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The biological diversity of the planet is being rapidly depleted due to the direct and indirect consequences of human activity. As the size of wild animal and plant populations decreases and fragmentation increases, inbreeding reduces fitness and loss of genetic diversity reduces their ability to adapt to changes in the environment. Many small isolated populations are going extinct unnecessarily. In many cases, such populations can be genetically rescued by gene flow from another population within the species, but this is very rarely done. This book provides a practical guide to the genetic management of fragmented animal and plant populations"--

Download or read book In Vivo Conservation of Animal Genetic Resources written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2013 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: These guidelines present the basic concepts involved in the development and implementation of in vivo conservation plans for animal genetic resources for food and agriculture. The guidelines are intended for use by policy-makers in the management of animal genetic resources, managers of animal breeding organizations, persons responsible for training in management of animal genetic resources and any other stakeholders with leading roles in designing and implementing in vivo conservation programmes for animal genetic resources. Although individual breeders and livestock keepers are not the direct target audience, the guidelines include background information that is relevant for all stakeholders involved in planning conservation programmes.

Download or read book Averting Extinction written by Tim W. Clark and published by Yale University Press. This book was released on 1997-01-01 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The black-footed ferret, once thought extinct, was rediscovered in Wyoming in 1981. In this book, Tim Clark tells the story of subsequent efforts to save the black-footed ferret, showing how it points up the necessity of finding new ways to conserve and restore species. According to Clark, the problems facing conservation are not fundamentally biological but stem from human systems -- policy decisions, organizational priorities, and professional rivalries. The focus in conservation, he says, must shift from science to practical problem solving.Clark first describes and analyzes efforts to restore the black-footed ferret after 1981 and looks at the processes, people, institutions, and programs that were involved in that endeavor. Finding that the ferret case illustrates many things that go wrong in the implementation of complex environmental policy, Clark then proposes fresh approaches to endangered species recovery. He gives guidelines for improving decisionmaking and development of policies; for devising organizational strategies and structures that are more conducive to learning; and for a new civic professionalism that will raise the standards for performance and better meet society's needs. This policy-oriented approach, he contends, will open up new avenues, methods, and hope for species recovery."A very important work that will be widely read, discussed, and argued". -- Steven J. Bissell, Colorado Division of Wildlife"A valuable contribution to a general science policy field where clear and sophisticated thinking is rare". -- Garry D. Brewer, School of Natural Resources and the Environment, University of Michigan, Ann Arbor

Download or read book Understanding the Changing Planet written by National Research Council and published by National Academies Press. This book was released on 2010-06-23 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the oceans to continental heartlands, human activities have altered the physical characteristics of Earth's surface. With Earth's population projected to peak at 8 to 12 billion people by 2050 and the additional stress of climate change, it is more important than ever to understand how and where these changes are happening. Innovation in the geographical sciences has the potential to advance knowledge of place-based environmental change, sustainability, and the impacts of a rapidly changing economy and society. Understanding the Changing Planet outlines eleven strategic directions to focus research and leverage new technologies to harness the potential that the geographical sciences offer.

Download or read book Genetic Diversity and Erosion in Plants written by M. R. Ahuja and published by Springer. This book was released on 2015-11-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic erosion is the loss of genetic diversity within a species. It can happen very quickly, due to catastrophic events, or changes in land use leading to habitat loss. But it can also occur more gradually and remain unnoticed for a long time. One of the main causes of genetic erosion is the replacement of local varieties by modern varieties. Other causes include environmental degradation, urbanization, and land clearing through deforestation and brush fires. In order to conserve biodiversity in plants, it is important to targets three independent levels that include ecosystems, species and genes. Genetic diversity is important to a species’ fitness, long-term viability, and ability to adapt to changing environmental conditions. Chapters in this book are written by leading geneticists, molecular biologists and other specialists on relevant topics on genetic erosion and conservation genetic diversity in plants. This divisible set of two volumes deals with a broad spectrum of topics on genetic erosion, and approaches to biodiversity conservation in crop plants and trees. Volume 1 deals with indicators and prevention of genetic erosion, while volume 2 covers genetic diversity and erosion in a number of plants species. These two volumes will also be useful to botanists, biotechnologists, environmentalists, policy makers, conservationists, and NGOs working to manage genetic erosion and biodiversity.

Download or read book Estrategia mundial para la conservaci n written by International Union for Conservation of Nature and Natural Resources and published by IUCN. This book was released on 1980 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keeping Options Alive written by Walter V. Reid and published by . This book was released on 1989 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why is Biological Diversity Important; Where is the worlds biodiversity located; Extinction;how serios is the theart; What happening to agricultural genetic diversity;Biodiversity conservation: what are the right tools for the job.

Download or read book Shattering written by Cary Fowler and published by University of Arizona Press. This book was released on 1990 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was through control of the shattering of wild seeds that humans first domesticated plants. Now control over those very plants threatens to shatter the world's food supply, as loss of genetic diversity sets the stage for widespread hunger. Large-scale agriculture has come to favor uniformity in food crops. More than 7,000 U.S. apple varieties once grew in American orchards; 6,000 of them are no longer available. Every broccoli variety offered through seed catalogs in 1900 has now disappeared. As the international genetics supply industry absorbs seed companies—with nearly one thousand takeovers since 1970—this trend toward uniformity seems likely to continue; and as third world agriculture is brought in line with international business interests, the gene pools of humanity's most basic foods are threatened. The consequences are more than culinary. Without the genetic diversity from which farmers traditionally breed for resistance to diseases, crops are more susceptible to the spread of pestilence. Tragedies like the Irish Potato Famine may be thought of today as ancient history; yet the U.S. corn blight of 1970 shows that technologically based agribusiness is a breeding ground for disaster. Shattering reviews the development of genetic diversity over 10,000 years of human agriculture, then exposes its loss in our lifetime at the hands of political and economic forces. The possibility of crisis is real; this book shows that it may not be too late to avert it.

Download or read book Guidelines for reintroductions and other conservation translocations written by Reintroduction and invasive species specialist groups' taskforce on moving plants and animals for conservation purposes and published by IUCN. This book was released on 2013 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: "As the world's biodiversity faces the incessant threats of habitat loss, invasive species and climate change, there is an increasing need to consider more direct conservation interventions. Humans have moved organisms between sites for their own purposes for millennia, and this has yielded benefits for human kind, but in some cases has led to disastrous impacts. In response to this complex aspect of conservation management, the IUCN Species Survival Commission (SSC) Reintroduction Specialist Group (RSG) and Invasive Species Specialist Group (ISSG) have revised and published the IUCN 'Guidelines for Reintroductions and Other Conservation Translocations'"--Website.

Download or read book Ex Situ Plant Conservation written by Center for Plant Conservation and published by Island Press. This book was released on 2013-02-22 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faced with widespread and devastating loss of biodiversity in wild habitats, scientists have developed innovative strategies for studying and protecting targeted plant and animal species in "off-site" facilities such as botanic gardens and zoos. Such ex situ work is an increasingly important component of conservation and restoration efforts. Ex Situ Plant Conservation, edited by Edward O. Guerrant Jr., Kayri Havens, and Mike Maunder, is the first book to address integrated plant conservation strategies and to examine the scientific, technical, and strategic bases of the ex situ approach. The book examines where and how ex situ investment can best support in situ conservation. Ex Situ Plant Conservation outlines the role, value, and limits of ex situ conservation as well as updating best management practices for the field, and is an invaluable resource for plant conservation practitioners at botanic gardens, zoos, and other conservation organizations; students and faculty in conservation biology and related fields; managers of protected areas and other public and private lands; and policymakers and members of the international community concerned with species conservation.

Download or read book Conservation Biology in Sub Saharan Africa written by Richard Primack and published by Open Book Publishers. This book was released on 2019-09-10 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation Biology in Sub-Saharan Africa comprehensively explores the challenges and potential solutions to key conservation issues in Sub-Saharan Africa. Easy to read, this lucid and accessible textbook includes fifteen chapters that cover a full range of conservation topics, including threats to biodiversity, environmental laws, and protected areas management, as well as related topics such as sustainability, poverty, and human-wildlife conflict. This rich resource also includes a background discussion of what conservation biology is, a wide range of theoretical approaches to the subject, and concrete examples of conservation practice in specific African contexts. Strategies are outlined to protect biodiversity whilst promoting economic development in the region. Boxes covering specific themes written by scientists who live and work throughout the region are included in each chapter, together with recommended readings and suggested discussion topics. Each chapter also includes an extensive bibliography. Conservation Biology in Sub-Saharan Africa provides the most up-to-date study in the field. It is an essential resource, available on-line without charge, for undergraduate and graduate students, as well as a handy guide for professionals working to stop the rapid loss of biodiversity in Sub-Saharan Africa and elsewhere.

Download or read book Scientific Foundations of Zoos and Aquariums written by Allison B. Kaufman and published by Cambridge University Press. This book was released on 2019-01-03 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using first-person stories and approachable scientific reviews, this volume explores how zoos conduct and support science around the world.

Download or read book Genetic Management of Fragmented Animal and Plant Populations written by Richard Frankham and published by Oxford University Press. This book was released on 2017 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the greatest unmet challenges in conservation biology is the genetic management of fragmented populations of threatened animal and plant species. More than a million small, isolated, population fragments of threatened species are likely suffering inbreeding depression and loss of evolutionary potential, resulting in elevated extinction risks. Although these effects can often be reversed by re-establishing gene flow between population fragments, managers very rarely do this. On the contrary, genetic methods are used mainly to document genetic differentiation among populations, with most studies concluding that genetically differentiated populations should be managed separately, thereby isolating them yet further and dooming many to eventual extinction Many small population fragments are going extinct principally for genetic reasons. Although the rapidly advancing field of molecular genetics is continually providing new tools to measure the extent of population fragmentation and its genetic consequences, adequate guidance on how to use these data for effective conservation is still lacking. This accessible, authoritative text is aimed at senior undergraduate and graduate students interested in conservation biology, conservation genetics, and wildlife management. It will also be of particular relevance to conservation practitioners and natural resource managers, as well as a broader academic audience of conservation biologists and evolutionary ecologists.

Download or read book Orchid Conservation written by Kingsley W. Dixon and published by . This book was released on 2003 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: