Author: Ramón Ricardo Vélez-OlmedaPublisher:
ISBN:
Category : Bees
Languages : en
Pages : 186
Book Description
Economic Aspects of Beekeeping in Puerto Rico, an Exploratory Study
Author: Ramón Ricardo Vélez-OlmedaPublisher:
ISBN:
Category : Bees
Languages : en
Pages : 186
Book Description
R.B.
Author: Status of Pollinators in North America
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309102898
Category : Technology & Engineering
Languages : en
Pages : 327
Book Description
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.
Register of Degrees Awarded by the Graduate Faculty of Cornell University
Author: Cornell UniversityPublisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 478
Book Description
Advanced Degrees in Latin American Studies, Cornell University
Author: Dan C. HazenPublisher:
ISBN:
Category : Latin America
Languages : en
Pages : 142
Book Description
Advanced Degrees Conferred at Cornell University During the Twentieth Century with Major Fields in Agricultural Economics
Author: Dissertation Abstracts
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 868
Book Description
The Biology of the Honey Bee
Author: Mark L. WinstonPublisher: Harvard University Press
ISBN: 0674744209
Category : Science
Languages : en
Pages : 300
Book Description
From ancient cave paintings of honey bee nests to modern science’s richly diversified investigation of honey bee biology and its applications, the human imagination has long been captivated by the mysterious and highly sophisticated behavior of this paragon among insect societies. In the first broad treatment of honey bee biology to appear in decades, Mark Winston provides rare access to the world of this extraordinary insect. In a bright and engaging style, Winston probes the dynamics of the honey bee’s social organization. He recreates for us the complex infrastructure of the nest, describes the highly specialized behavior of workers, queens, and drones, and examines in detail the remarkable ability of the honey bee colony to regulate its functions according to events within and outside the nest. Winston integrates into his discussion the results of recent studies, bringing into sharp focus topics of current bee research. These include the exquisite architecture of the nest and its relation to bee physiology; the intricate division of labor and the relevance of a temporal caste structure to efficient functioning of the colony; and, finally, the life-death struggles of swarming, supersedure, and mating that mark the reproductive cycle of the honey bee. The Biology of the Honey Bee not only reviews the basic aspects of social behavior, ecology, anatomy, physiology, and genetics, it also summarizes major controversies in contemporary honey bee research, such as the importance of kin recognition in the evolution of social behavior and the role of the well-known dance language in honey bee communication. Thorough, well-illustrated, and lucidly written, this book will for many years be a valuable resource for scholars, students, and beekeepers alike.
Access to Affordable and Nutritious Food: Measuring and Understanding Food Deserts and Their Consequences
Author: Michele Ver PloegPublisher: DIANE Publishing
ISBN: 1437921345
Category : Health & Fitness
Languages : en
Pages : 160
Book Description
The Food, Conservation, and Energy Act of 2008 directed the U.S. Dept. of Agr. to conduct a 1-year study to assess the extent of areas with limited access to affordable and nutritious food, identify characteristics and causes of such areas, consider how limited access affects local populations, and outline recommend. to address the problem. This report presents the findings of the study, which include results from two conferences of national and internat. authorities on food deserts and a set of research studies. It also includes reviews of existing literature, a national-level assessment of access to large grocery stores and supermarkets, analysis of the economic and public health effects of limited access, and a discussion of existing policy interventions. Illus.
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 582
Book Description