Биология
Различные книги в жанре БиологияMushroom Collecting for Beginners
This rare antiquarian text constitutes the perfect handbook for those interested in mushroom-hunting. Complete with a variety of detailed diagrams and a wealth of comprehensive information on the most common mushrooms, this fascinating book is a must-have for beginners looking to start a hobby in the exciting world of mycology. As well as detailing the myriad edible and useful mushrooms commonly found in the wild, this book provides all the information one might need to know about poisonous and even deadly fungi of the fields and woods – making it a must-read for those intent on safely collecting wild mushrooms. Mushroom Collecting For Beginners has been elected for modern republication due to its immense educational value, and is proudly republished here with a prefatory introduction to the topic.
The Economics of Farm Animal Welfare
This landmark new text charts the latest developments in economic research relevant to farm animal welfare. A range of global experts and key opinion leaders outline the challenges in achieving sustainable livestock production while improving farm profit, climate change and animal welfare, and make policy-relevant recommendations for the future.
This is a theoretical yet practical book that examines:
– the origins of farm animal welfare, cross-disciplinary interactions and the future of the field; – consumer demand and changing preferences as animal welfare rises up the social agenda; – the impact political organisations such as the EU and WTO have on animal welfare.
An important resource for policy makers and animal welfare scientists, economists and clinicians, this book provides a thought-provoking yet evidence-based review for all those interested in quantifying and improving farm animal welfare.
Sasol Birds of Southern Africa
Now in its fifth edition, Sasol Birds of Southern Africa has been brought fully up to date by its expert author panel, with additional contributions from two new birding experts. Greatly enhanced, this comprehensive, best-selling guide is sure to maintain its place as one of Africa’s most trusted field guides. Sales points: More than 800 new illustrations. Scan and play bird calls using free downloadable app. Fully revised text (with latest species records), maps and plate annotations. Fresh input from new contributing authors. Comprehensive coverage of the region’s birds.
Field Guide to Renosterveld of the Overberg
Part of the Fynbos biome, Renosterveld is one of the world’s most threatened vegetation types, with just 5% of its original extent remaining. Focusing specifically on the Renosterveld of the Overberg region in the Western Cape, this field guide is the first of its kind to cover this highly endangered ecosystem, characterised by nutrient-rich soil which has been exploited for agriculture. An in-depth introduction sets the scene, defining what Renosterveld is and giving some historical background to the ecology of the area. The plants section follows, featuring over 980 plant species from the common and ‘showy’ to the weird, obscure and often-overlooked. A shorter section of 140 animal species showcases the diversity of creatures found here despite severe habitat loss and fragmentation. Additional features include a glossary with supporting illustrations, guidelines for landowners and farmers, and a comprehensive index. Field Guide to Renosterveld of the Overberg promises to be an enduring record of this unique and severely threatened ecosystem. It will be a vital addition to any nature lover’s bookshelf. Sales points: Comprehensive coverage of Renosterveld species, identification at a glance, full-colour photographs of all species described, expert author team.
Sasol Voëls van Suider-Afrika
Die vyfde uitgawe van Sasol Voëls van Suider-Afrika is tans volledig bygewerk deur die deskundige skrywerspaneel, met bykomende bydraes van twee nuwe voëldeskundiges. Hierdie omvattende topverkopergids is grootliks verbeter en sal beslis sy plek behou as een van die mees betroubare veldgidse in Afrika. Verkoopspunte: Meer as 800 nuwe illustrasies. Skandeer en speel voëlroepe deur die gratis aflaaibare toep te gebruik. Omvattende hersiening (met mees onlangse spesierekords), verspreidingskaarte en plaatbyskrifte. Nuwe toevoegings van bydraende skrywers. Omvattende dekking van die streek se voëls.
Irrigated Eden
Irrigation came to the arid West in a wave of optimism about the power of water to make the desert bloom. Mark Fiege�s fascinating and innovative study of irrigation in southern Idaho�s Snake River valley describes a complex interplay of human and natural systems. Using vast quantities of labor, irrigators built dams, excavated canals, laid out farms, and brought millions of acres into cultivation. But at each step, nature rebounded and compromised the intended agricultural order. The result was a new and richly textured landscape made of layer upon layer of technology and intractable natural forces�one that engineers and farmers did not control with the precision they had anticipated. Irrigated Eden vividly portrays how human actions inadvertently helped to create a strange and sometimes baffling ecology.Winner of the Idaho Library Association Book Award, 1999Winner of the Charles A. Weyerhaeuser Award, Forest History Society, 1999-2000
A Symbol of Wilderness
Harvey details the first major clash between conservationists and developers after World War II, the successful fight to prevent the building of Echo Park Dam. The dam on the Green River was intended to create a recreational lake in northwest Colorado and generate hydroelectric power, but would have flooded picturesque Echo Park Valley and threatened Dinosaur National Monument, straddling the Utah-Colorado border near Wyoming.
Northwest Lands, Northwest Peoples
It can be said that all of human history is environmental history, for all human action happens in an environment�in a place. This collection of essays explores the environmental history of the Pacific Northwest of North America, addressing questions of how humans have adapted to the northwestern landscape and modified it over time, and how the changing landscape in turn affected human society, economy, laws, and values.Northwest Lands and Peoples includes essays by historians, anthropologists, ecologists, a botanist, geographers, biologists, law professors, and a journalist. It addresses a wide variety of topics indicative of current scholarship in the rapidly growing field of environmental history.
The Wolves of Mount McKinley
In the time of Lewis and Clark, wolves were abundant throughout North America from the Arctic regions to Mexico. But man declared war on this cunning and powerful animal when cattle replaced the buffalo on the western plains, reducing the wolf�s range to those few areas in the Far North where economic necessity did not call for its extinction.Between 1939 and 1941, Adolph Murie, one of North America�s greatest naturalists, made a field study of the relationship between wolves and Dall sheep in Mount McKinley National Park (since renamed Denali National Park) which has come to be respected as a classic work of natural history. In this study Murie not only described the life cycle of Alaskan wolves in greater detail than has ever been done, but he discovered a great deal about the entire ecological network of predator and prey.The issues surrounding the survival of the wolf and its prey are more important today than ever, and Murie helps us understand the careful balance that must be maintained to ensure that these magnificent animals prosper. Originally available only in government publications which are long out-of-print, this account of a much maligned animal is now available in its first popular edition.