Download or read book Distribution Sex Ratios and Behavior of Diving Ducks Wintering on the Detroit River written by Susan M. Noseworthy and published by . This book was released on 1981 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Waterfowl in Winter written by Milton Webster Weller and published by U of Minnesota Press. This book was released on 1988 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology written by Charles J. Krebs and published by Benjamin-Cummings Publishing Company. This book was released on 2001 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This best-selling majors ecology book continues to present ecology as a series of problems for readers to critically analyze. No other text presents analytical, quantitative, and statistical ecological information in an equally accessible style. Reflecting the way ecologists actually practice, the book emphasizes the role of experiments in testing ecological ideas and discusses many contemporary and controversial problems related to distribution and abundance. Throughout the book, Krebs thoroughly explains the application of mathematical concepts in ecology while reinforcing these concepts with research references, examples, and interesting end-of-chapter review questions. Thoroughly updated with new examples and references, the book now features a new full-color design and is accompanied by an art CD-ROM for instructors. The field package also includes The Ecology Action Guide, a guide that encourages readers to be environmentally responsible citizens, and a subscription to The Ecology Place (www.ecologyplace.com), a web site and CD-ROM that enables users to become virtual field ecologists by performing experiments such as estimating the number of mice on an imaginary island or restoring prairie land in Iowa. For college instructors and students.
Download or read book Diseases of Wild Waterfowl written by Gary A. Wobeser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Management of wild waterfowl has become increasingly intensive. Many birds now hatch in managed nesting cover or in artificial nesting structures, use man-made wetlands, and winter on crowded refuges while consuming a grain diet The water they use is often limited in supply and may contain residues from its many prior users. Unfortunately, intensified management often results in new problems, among which disease is important There are many similarities between the current form of management used for some waterfowl and that used in domestic animals. In both, the objective is to maintain a healthy, productive population. Dealing with health problems in waterfowl will benefit from combining the skills of veterinary medicine and wildlife ecology. Revisiting this book after 15 years allowed me to consider changes at the interface between the two disciplines. Veterinary medicine traditionally has been concerned with the individual and with treating sick animals, while the ecologist is concerned with populations and the manager has limited interest in treating sick birds. During this period there has been a marked increase in awareness among veterinarians that they have a responsibility in wildlife and conservation biology. Curricula of many veterinary colleges now include material on non-domestic animals and attempt to put disease in an ecological context. Also during this time, waterfowl managers have become more aware of disease as a factor in population biology and there are early attempts to put numbers to "disease" in models of continental waterfowl populations.
Download or read book Bioindicators for Assessing Ecological Integrity of Prairie Wetlands written by Paul R. Adamus and published by . This book was released on 1996 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Studies of Birds written by David Lack and published by . This book was released on 1966 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zebra Mussels Biology Impacts and Control written by Thomas F. Nalepa and published by CRC Press. This book was released on 1992-11-24 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and rapid spread of the zebra mussel in North American waters has caused great concern among industrial and recreational users of these waters. This bivalve mollusk is a biofouler that attaches to any firm substrate (e.g. rocks, piers, water intake pipes, boat hulls) and has already created significant problems for raw water users such as water treatment plants and power plants. Zebra Mussels: Biology, Impacts and Control provides essential information regarding the biology of the zebra mussel in North America and Europe, presents case studies of environmental and industrial impacts, and outlines control strategies. Summary articles detail its life history, origins, and morphology. The book also examines techniques used to culture and maintain this organism in the laboratory. Thirty-two color plates illustrate some of the dramatic problems created by the explosive population growth of this species. Zebra Mussels: Biology, Impacts, and Control is an important resource for ecologists, conservationists, environmental consultants, water quality engineers, regulatory officials, power utilities, and libraries.
Download or read book Ornithology Evolution and Philosophy written by Jürgen Haffer and published by Springer Science & Business Media. This book was released on 2007-11-19 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first detailed biography of Ernst Mayr. He was an ‘architect’ of the Synthetic Theory of Evolution, and the greatest evolutionary biologist since Charles Darwin. He is one of the most widely known biologists of the 20th century.
Download or read book Prairie Ducks written by Lyle K. Sowls and published by Stackpole Books. This book was released on 2017-09-15 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: The success of duck hunters throughout much of North America each fall depends to a large degree upon the spring productivity of the breeding waterfowl in the northern prairie states and the central provinces of Canada. In southern Manitoba, in the Waterfowl Research Station, a privately endowed outdoor laboratory owned by the North American Wildlife Foundation and operated by the Wildlife Management Institute. Its principal purpose is to determine facts useful in the management and perpetuation of this international migratory resource. When Dr. Lyle K. Sowls began his studies at Delta in 1946, many wide gaps remained in the knowledge of the relationship of breeding ducks to their home range. There were many scattered observations and a growing mass of data accumulated through the study of banding returned; but the activities of individual ducks during the critical spring months and the activities and the fate of broods each summer remained largely a mystery. Sowls, working toward his doctorate in wildlife management as a graduate student of the University of Wisconsin, studied the waterfowl at Delta for five years in an attempt to plug some of those gaps through intensive study of the waterfowl on one limited are. His studies developed new techniques and brought out new facts that were startling even to waterfowl biologists, facts of prime importance to the duck hunter or to any one interest in the future of America’s waterfowl flights. As a result of Dr. Sowls’ research, new light has been shed on such factors as predation, renesting, and homing habits of the important species of game ducks, and already have become the basis for revised hunting regulations and give a new understanding of waterfowl problems.
Download or read book Quagga and Zebra Mussels written by Thomas F. Nalepa and published by CRC Press. This book was released on 2013-10-25 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and rapid spread of two Eurasian mussel species, Dreissena polymorpha (zebra mussel) and Dreissena rostriformis bugensis (quagga mussel), in waters of North America has caused great concern among industrial and recreational water users. These invasive species can create substantial problems for raw water users such as water treatment facilities and power plants, and they can have other negative impacts by altering aquatic environments. In the 20 years since the first edition of this book was published, zebra mussels have continued to spread, and quagga mussels have become the greater threat in the Great Lakes, in deep regions of large lakes, and in the southwestern Unites States. Quagga mussels have also expanded greatly in eastern and western Europe since the first book edition was published. Quagga and Zebra Mussels: Biology, Impacts, and Control, Second Edition provides a broad view of the zebra/quagga mussel issue, offering a historic perspective and up-to-date information on mussel research. Comprising 48 chapters, this second edition includes reviews of mussel morphology, physiology, and behavior. It details mussel distribution and spread in Europe and across North America, and examines policy and regulatory responses, management strategies, and mitigation efforts. In addition, this book provides extensive coverage of the impact of invasive mussel species on freshwater ecosystems, including effects on water clarity, phytoplankton, water quality, food web changes, and consequences to other aquatic fauna. It also reviews and offers new insights on how zebra and quagga mussels respond and adapt to varying environmental conditions. This new edition includes seven video clips that complement chapter text and, through visual documentation, provide a greater understanding of mussel behavior and distribution.
Download or read book Three Years in a 12 Foot Boat written by Stephen G. Ladd and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For anyone who dreams of sailing away, here's an engrossing, gritty memoir of a 15,000-mile solo expedition in a tiny, hand-made boat. Bent on discovery, Ladd ranges from Montana to a harrowing sail along the pirate-ridden coast of Panama and Colombia, across the Andes, down a 600-mile river by night to avoid guerrillas, to the Antilles and the Caribbean. Robbed, capsized, arrested and befriended, he sails and rows through a tumult of uncharted adventures. The cast of characters: Dieter, mad ex-Nazi on a desert island; Hans, the smuggler who disappears at sea; castaways, prostitutes, and fortune seekers. Stow away with a poetic storyteller on a stormy, soulful voyage through nineteen countries, on the razor's edge between freedom and fear, loneliness and love.
Download or read book Traditional Ecological Knowledge written by International Program on Traditional Ecological Knowledge and published by IDRC. This book was released on 1993 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional Ecological Knowledge: Concepts and cases
Download or read book Parasitic Diseases of Wild Birds written by Carter T. Atkinson and published by John Wiley & Sons. This book was released on 2009-03-20 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parasitic Diseases of Wild Birds provides thorough coverage of major parasite groups affecting wild bird species. Broken into four sections covering protozoa, helminths, leeches, and arthropod parasites, this volume provides reviews of the history, disease, epizootiology, pathology, and population impacts caused by parasitic disease. Taking a unique approach that focuses on the effects of the parasites on the host, Parasitic Diseases of Wild Birds fills a unique niche in animal health literature.
Download or read book The Life of the Hummingbird written by Alexander Frank Skutch and published by Crown. This book was released on 1973 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Onion Book of Known Knowledge written by The Onion and published by Little, Brown. This book was released on 2012-10-23 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are you a witless cretin with no reason to live? Would you like to know more about every piece of knowledge ever? Do you have cash? Then congratulations, because just in time for the death of the print industry as we know it comes the final book ever published, and the only one you will ever need: The Onion's compendium of all things known. Replete with an astonishing assemblage of facts, illustrations, maps, charts, threats, blood, and additional fees to edify even the most simple-minded book-buyer, The Onion Book of Known Knowledge is packed with valuable information -- such as the life stages of an Aunt; places to kill one's self in Utica, New York; and the dimensions of a female bucket, or "pail." With hundreds of entries for all 27 letters of the alphabet, The Onion Book of Known Knowledge must be purchased immediately to avoid the sting of eternal ignorance.
Download or read book Introduction to Limnology written by Stanley I. Dodson and published by McGraw-Hill Science, Engineering & Mathematics. This book was released on 2005 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The text is an introduction to the ecology, chemisty and physics of freshwater systems, with an emphasis on the human perspective "--Page [4] de couv.
Download or read book Pokeweed Phytolacca Americana written by Arnold Krochmal and published by . This book was released on 1970 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2Pokeweed, a plant abundant in Appalachia, exhibits some chemical similarities to a related species that has shown molluscicidal properties. Because this suggests that pokeweed, Phytolacca americana L. (P. decandra L.), has potential for controlling fresh-water snails, we have compiled this report of its chemical composition, uses, propagation methods, and other potentially useful species of the genus Phytolacca. The related species, Phytolacca dodencandra L'Her, was found to be the source of a molluscicide, which could pIay an important role in control of bilharziasis, a parasitic disease of humans widespread in Puerto Rico, Africa, and other tropical areas (22). Dead snails and small fish were observed in waterways in areas of Ethiopia where people washed their clothes with this Phytolacca's fruit, which is rich in saponins. Some distance downstream and immediately upstream from the washing places, abundant live snails were present, suggesting that the fruit contained a toxin acting as a molluscicide. This was subsequently confirmed by laboratory tests; tap-water extracts of the dried and powdered fruit had an LC100 (lethal concentration) of 10 parts per million against snails (Biomphalaria, Bulinus: and Lymnea spp.) after 24-hour exposure at 23OC. Furthermore, it was shown that molluscicidal potency was not affected by the presence of soil or vegetable matter, an important factor when the molluscicide is used under natural conditions. S3.
