General Catalogue of Printed Books
Title | General Catalogue of Printed Books PDF eBook |
Author | British Museum. Dept. of Printed Books |
Publisher | |
Pages | 584 |
Release | 1959 |
Genre | English imprints |
ISBN |
Bulletin
Title | Bulletin PDF eBook |
Author | |
Publisher | |
Pages | 794 |
Release | 1959 |
Genre | Forests and forestry |
ISBN |
The National Union Catalog, Pre-1956 Imprints
Title | The National Union Catalog, Pre-1956 Imprints PDF eBook |
Author | Library of Congress |
Publisher | |
Pages | 712 |
Release | 1970 |
Genre | Catalogs, Union |
ISBN |
Fishes of the Salish Sea
Title | Fishes of the Salish Sea PDF eBook |
Author | Theodore W. Pietsch |
Publisher | |
Pages | 0 |
Release | 2019 |
Genre | Nature |
ISBN | 9780295743745 |
Fishes of the Salish Sea is the definitive guide to the identification and history of the marine and anadromous fishes of Puget Sound and the Straits of Georgia and Juan de Fuca. This comprehensive three-volume set, featuring striking illustrations of the Salish Sea's 260 fish species by noted illustrator Joseph Tomelleri, details the ecology and life history of each species and recounts the region's rich heritage of marine research and exploration. Beginning with jawless hagfishes and lampreys and ending with the distinctive Ocean Sunfish, leading scientists Theodore Wells Pietsch and James Orr present the taxa in phylogenetic order, based on classifications that reflect the most current scientific knowledge. Illustrated taxonomic keys facilitate fast and accurate species identification. These in-depth, thoroughly documented, and yet accessible volumes will prove invaluable to marine biologists and ecologists, natural resource managers, anglers, divers, students, and all who want to learn about, marvel over, and preserve the vibrant diversity of Salish Sea marine life. Comprehensive accounts of 260 fish species Brilliant color plates of all treated species Illustrated taxonomic keys for easy species identification In-depth history of Salish Sea research and exploration
Pocket Guide to the Trees and Shrubs of British Columbia
Title | Pocket Guide to the Trees and Shrubs of British Columbia PDF eBook |
Author | E. H. Garman |
Publisher | |
Pages | 131 |
Release | 1970 |
Genre | Shrubs |
ISBN |
Handbook of Frogs and Toads of the United States and Canada
Title | Handbook of Frogs and Toads of the United States and Canada PDF eBook |
Author | Albert Hazen Wright |
Publisher | Cornell University Press |
Pages | 671 |
Release | 2019-06-30 |
Genre | Nature |
ISBN | 1501738097 |
The preeminent naturalists Albert Hazen Wright and Anna Allen Wright spent years assembling the wealth of material on frogs and toads appearing in this widely used handbook, the third edition of which was originally published in 1949. With abundant black-and-white photographs, colorful descriptions, journal notes from the field, and excerpts from the literature, their personalized natural history emphasizes amphibians observed in the wild. In a foreword to the 1995 paperback edition, Roy McDiarmid, a foremost specialist on frogs and toads, brings the book into historical perspective and supplies information to bring it up to date. Accounts of more than 100 species and subspecies cover such topics as common and scientific names, range, habitat, size, and general appearance, as well as color, structure, voice, and breeding. Separate keys are given for secondary sexual characteristics, eggs, tadpoles, families, and species. Generous quotations from the Wrights' field journals give the reader a sense of the problems and satisfactions of their work.
Pesticide Resistance in Arthropods
Title | Pesticide Resistance in Arthropods PDF eBook |
Author | Richard Roush |
Publisher | Springer Science & Business Media |
Pages | 312 |
Release | 2012-12-06 |
Genre | Technology & Engineering |
ISBN | 1468464299 |
Bruce E. Tabashnik and Richard T. Roush Pesticide resistance is an increasingly urgent worldwide problem. Resistance to one or more pesticides has been documented in more than 440 species of insects and mites. Resistance in vectors of human dise8se, particularly malaria-transmit ting mosquitoes, is a serious threat to public health in many nations. Agricultural productivity is jeopardized because of widespread resistance in crop and livestock pests. Serious resistance problems are also evident in pests of the urban environ ment, most notably cockroaches. Better understanding of pesticide resistance is needed to devise techniques for managing resistance (Le. , slowing, preventing, or reversing development of resistance in pests and promoting it in beneficial natural enemies). At the same time, resistance is a dramatic example of evolution. Knowledge of resistance can thus provide fundamental insights into evolution, genetics, physiology, and ecology. Resistance management can help to reduce the harmful effects of pesticides by decreasing rates of pesticide use and prolonging the efficacy of environmentally safe pesticides. In response to resistance problems, the concentration or frequency of pesticide applications is often increased. Effective resistance management would reduce this type of increased pesticide use. Improved monitoring of resis tance would also decrease the number of ineffective pesticide applications that are made when a resistance problem exists but has not been diagnosed. Resistance often leads to replacement of one pesticide with another that is more expensive and less compatible with alternative controls.