Hymenoptera of America North of Mexico

Hymenoptera of America North of Mexico
Author :
Publisher :
Total Pages : 318
Release :
ISBN-10 : MINN:31951T00022060Z
ISBN-13 :
Rating : 4/5 (0Z Downloads)

Synopsis Hymenoptera of America North of Mexico by : United States. Entomology Research Division

A Field Guide to the Insects of America North of Mexico

A Field Guide to the Insects of America North of Mexico
Author :
Publisher :
Total Pages : 458
Release :
ISBN-10 : 0395185238
ISBN-13 : 9780395185230
Rating : 4/5 (38 Downloads)

Synopsis A Field Guide to the Insects of America North of Mexico by : Donald Joyce Borror

Text and pictures combine to present 579 insect families.

Status of Pollinators in North America

Status of Pollinators in North America
Author :
Publisher : National Academies Press
Total Pages : 327
Release :
ISBN-10 : 9780309102896
ISBN-13 : 0309102898
Rating : 4/5 (96 Downloads)

Synopsis Status of Pollinators in North America by : National Research Council

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.