Author: Elbert Luther Little Publisher: ISBN: Category : Agriculture Languages : en Pages : 60
Book Description
A summary of the nomenclature and 22 distribution maps of subdivisions of the genus Pinus L., pine, are presented here to supplement Miscellaneous Publication 991--Geographic Distribution of the Pines of the world, with maps of 94 species. Important synonyms and lists of the species are included, and the slight changes in the classification of the subdivisions are explained. The maps of subdivisions combined from those of individual species show clearly and graphically the maximum natural range of all component species. These compiled maps of groups of related species may be useful in further researches, particularly in classification, geographical distribution, tree breeding and introduction, and evolution.
Author: Aljos Farjon Publisher: New York Botanical Garden Press ISBN: Category : Science Languages : en Pages : 312
Book Description
This volume examines pines native to Mexico, Central America, & the Caribbean. The introduction covers all aspects of pines that are of interest to both taxonomists & more general readers.
Author: Susan Fox Publisher: Springer Science & Business Media ISBN: 1461208092 Category : Science Languages : en Pages : 524
Book Description
The public's attitude toward air pollution in the United States evolved substantially during the 1960s. One of the results of the nation's emerging environmental ethic was the creation of the U. S. Environmental Protection Agency (EPA) in December of 1970. Prior to this time, research was focused on the impacts of air pollution on human health and welfare and was largely conducted by several federal research agencies, which included the Department of Health, Education, and Welfare; the National Oceanic and Atmospheric Administration; and the U. S. Department of Agricul ture. After the creation of the EPA, much of this work was consolidated in one regulatory agency, which resulted in periodic evaluations of the various effects of atmospheric pollution on human health, materials, agriculture, and forest ecosystems. At the same time that environmental interest was growing in the United States, concern increased in the European scientific community and public over the ecological impacts of acidic deposition. As the magnitude of the damage to European lakes and streams and the widespread decline in Norway spruce and silver fir was reported, concern that similar problems were occurring in the United States increased substantially. This concern was heightened by press reports of high elevation spruce-fir forest declines in the Adirondack and Appalachian Mountains and the decline and death of sugar maples in the northeastern United States and Canada.
Author: Keith William Dorman Publisher: ISBN: Category : Pine Languages : en Pages : 424
Book Description
A comprehensive compilation of genetic and breeding information from more than 1,000 sources on the 10 southern pine species. Major topics include species descriptions, factors of flowering and seed production, methods of vegetative propagation, traits of interspecific hybrids, and geographic, racial, stand, and tree-to-tree variation. Practical and detailed information is provided on various techniques and problems associated with creative breeding and seed production.
Author: OECD Publisher: OECD Publishing ISBN: 9264095438 Category : Languages : en Pages : 327
Book Description
These OECD Biosafety Consensus Documents identify elements of scientific information used in the environmental safety and risk assessment of transgenic organisms which are common to OECD member countries and some non members associated with the work.
Author: Elbert Luther Little
Author: 
Author: George M. Briggs
Author: Aljos Farjon
Author: George Russell Shaw
Author: Nancy D. Gordon
Author: Susan Fox
Author: Frank G. Hawksworth
Author: Keith William Dorman
Author: OECD