Alaska Trees and Shrubs

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University of Alaska Press, 2010 M11 15 - 370 páginas
Alaska Trees and Shrubs has been the definitive work on the woody plants of Alaska for more than three decades. This new, completely revised second edition provides updated information on habitat, as well as detailed descriptions of every tree or shrub species in the state. New distribution maps reflect the latest survey data, while the keys, glossary, and appendix on non-native plants make this the most useful guide to Alaska trees and shrubs ever published.
 

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Contenido

Introduction
1
Chapter 1
5
Glossary of Botanical Terms
341

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Página ix - Health (NIH), the National Science Foundation (NSF), and the US Department of Agriculture (USDA).
Página 1 - Atlas of United States trees, volume 2, Alaska trees and common shrubs. US Dep.
Página 19 - Moist tundra systems in this region usually form a complete ground cover and are quite productive during the growing season. They vary from almost continuous and uniformly developed cottongrass tussocks with sparse growth of other sedges and dwarf shrubs to stands where tussocks are scarce or lacking and dwarf shrubs are dominant. Associated species are arctagrostis...
Página 7 - The southern part of the coastal forests is composed primarily of Western hemlock and Sitka spruce with a scattering of mountain hemlock, Western red cedar, and Alaska cedar. Red alder is common along streams and beach fringes and on soils recently disturbed by logging and landslides.
Página 20 - Standing water is almost always present in the summer, and in the northern parts, permafrost is close to the surface. Microrelief is provided by peat ridges and polygonal features related to frost action and ice wedges. The vegetation is primarily a sedge and cottongrass mat, usually not formed into tussocks. The few woody plants occur on the driest sites where the microrelief raises them above standing water.
Página 14 - ... are slow growing and seldom exceed 8 inches in diameter or 50 feet in height. Cones of this tree open after fire and spread abundant seed, enabling black spruce to quickly invade burned areas. The slow-growing stunted tamarack is associated with black spruce in the wet lowlands. Like black spruce, it is of little commercial value, seldom reaching a diameter of more than 6 inches. Rolling basins and knolls in the lowlands have a varied mixture of white spruce, black spruce, paper birch, aspen...
Página 18 - Thickets may be extremely dense or open and interspersed with reindeer lichens, low heath-type shrubs, or patches of alpine tundra.

Acerca del autor (2010)

Leslie A Viereck retired as principal plant ecologist from the U.S. Forest Service’s Institute of Northern Forestry in Fairbanks in 1996. Since then he has been an emeritus scientist with the Boreal Ecology Cooperative Research Unit (BECRU) at the University of Alaska Fairbanks.

He also holds an Affiliate Professor of Forest Ecology position in the School of Natural Resources and Agricultural Sciences (SNRAS) at UAF, as well as research associate appointments with the Institute of Arctic Biology and the University of Alaska Museum of the North.

Elbert L. Little, Jr., died in 2004 after a distinguished career as senior scientist and chief dendrologist with the U.S. Forest Service in Washington, D.C. He was an authority on both North American and tropical trees. Among his more than twenty books on trees are the five-volume Atlas of United States Trees (1981) and the popular Audubon Field Guide to North American Trees. Dr. Little was coauthor of the 1950 edition of the Pocket Guide to Alaska Trees and made several extended field trips to Alaska during the preparation of Alaska Trees and Shrubs.

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