A portable, full-color photographic guide to the most commonly seen bees in the western United States and Canada Bees play a vitally important role in the pollination of native plants and agricultural crops around the globe. These stunningly beautiful insects come in a wide range of sizes, shapes, and colors. There are more than 3,000 species in western North America, and identifying them is a challenging task even for taxonomists. Common Bees of Western North America is the first species-level photographic field guide to the most commonly seen bees in the western United States and Canada, focusing on those that are found in urban environments, specialize on unique plants, or are especially distinctive in appearance. This book walks you through the process of bee identification using breathtaking high-resolution color photos that highlight the key characteristics of each species, making identification easier. Full of essential facts about the natural history of these magnificent creatures, this is a must-have field guide for naturalists and backyard gardeners alike. Covers more than 200 species Features more than 1,100 stunning close-up color photos Shows multiple images of each species, with arrows indicating key features Includes a range map for every species Provides silhouette images depicting the actual size of each species Describes key identification features, size, phenology, floral preference, nesting, and related species Contains a taxonomic key to the bee genera of the region

This manual describes 300 species of insect borers that attach hardwood trees, shrubs, and other woody angiosperms in North America and provides information for controlling them.

Pollinators-insects, birds, bats, and other animals that carry pollen from the male to the female parts of flowers for plant reproduction-are an essential part of natural and agricultural ecosystems throughout North America. For example, most fruit, vegetable, and seed crops and some crops that provide fiber, drugs, and fuel depend on animals for pollination. This report provides evidence for the decline of some pollinator species in North America, including America's most important managed pollinator, the honey bee, as well as some butterflies, bats, and hummingbirds. For most managed and wild pollinator species, however, population trends have not been assessed because populations have not been monitored over time. In addition, for wild species with demonstrated declines, it is often difficult to determine the causes or consequences of their decline. This report outlines priorities for research and monitoring that are needed to improve information on the status of pollinators and establishes a framework for conservation and restoration of pollinator species and communities.

The First Edition of Ecology and Classification of North American Freshwater Invertebrates has been immensely popular with students and researchers interested in freshwater biology and ecology, limnology, environmental science, invertebrate zoology, and related fields. The First Edition has been widely used as a textbook and this Second Edition should continue to serve students in advanced classes. The Second Edition features expanded and updated chapters, especially with respect to the cited references and the classification of North American freshwater invertebrates. New chapters or substantially revised chapters include those on freshwater ecosystems, snails, aquatic spiders, aquatic insects, and crustaceans. - Most up-to-date and informative text of its kind - Written by experts in the ecology of various invertebrate groups, coverage emphasizes ecological information within a current taxonomic framework - Each chapter contains both morphological and taxonomic information, including keys to North American taxa (usually to the generic level) as well as bibliographic information and a list of further readings - The text is geared toward researchers and advanced undergraduate and graduate students

"It is a masterpiece, an instant classic of entomology." -- Edward O. Wilson "This definitive reference by an acclaimed expert accounts for 1200 genera/subgenera and 16,000 species of bees in the world... Useful guide for entomologists, biologists, botanists, ecologists, and students." -- Southeastern Naturalist