Author: Kathleen Geier-Hayes
Publisher: Forgotten Books
ISBN: 9780365753124
Category : Business & Economics
Languages : en
Pages : 32
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Excerpt from Natural Regeneration in Two Central Idaho Grand Fir Habitat Types Though six conifer species occur in the grand fir zone, the importance of individual species depends on the habitat type (table By definition the climax Spe cies, grand fir, is found throughout the two habitat types; however, Douglas-fir (pseudotsuga menziesii) and ponderosa pine (pinus ponderosa) are also com mon. Engelmann spruce (picea engelmannii), west ern larch (larix occidentalis), and lodgepole pine (pinus contorta) occur in some areas. Western larch and lodgepole pine are both early seral. Western larch grows most commonly on warmer, more moist sites. Lodgepole pine occurs primarily on cooler sites, and when it is found in large quantities, it may indicate a frost pocket. In this case, it may be the only species that can successfully regenerate immediately following a disturbance, even when other species are present. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Kathleen Geier-Hayes
Publisher:
ISBN:
Category : Abies grandis
Languages : en
Pages : 24
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Author: Kathleen Geier-Hayes
Publisher: Ecosystems Research Alliance
ISBN: 9780899049007
Category :
Languages : en
Pages : 24
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Author: Robert Wilbur Steele
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 742
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Author: Robert Steele
Publisher: Forgotten Books
ISBN: 9780666997944
Category : Business & Economics
Languages : en
Pages : 612
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Excerpt from The Grand Fir/Blue Huckleberry Habitat Type in Central Idaho: Succession and Management Over much of the West, development of habitat type classification based on potential natural vegetation (pfister 1984) has fostered a growing awareness of vegetation and its variability. Those who manage natural resources now recognize the need to foresee impacts of their activities on the present vegetation and to understand possible changes that may result. But in order to understand all facets of vegetal change, one's perspective must encompass the often bewildering integration of cause and effect, and ran dom, cyclic, and temporal relationships that are manifest in succession dynamics. Logically, the first step is to reduce this complexity to a manageable number of recognizable units in the form of a classification. Habitat type classifications focus on the environmental (site) differences affecting vegetation. They provide a logical framework for studying succession and occasionally infer successional relationships but offer no classification of seral communities. As one approach to meeting this need, we present herein a classification of seral vegetation designed for general field use. In so doing, we have at tempted to exploit the fact that natural classifications, in contrast to technical ones designed for a specific use, have broader application and often provide greater prediction capability. The widely accepted habitat type system of classification is an outstanding example of a natural classification and as its originators, R. And J. Daubenmire have pointed out that system may be con sidered the closest to a natural one that allows the most predictions about a unit from a mere knowledge of its position in the system. We developed the following classification with these criteria in mind so that the rela tive position of a classified unit in the system can help predict the successional direction of that unit. By doing this, we found that some types of seral vegetation are strongly related to a specific disturbance; other types develop mainly through uninterrupted succession. These cause and effect relationships are presented in various ways in the sections dealing with classification as well as those dealing with management implications. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Robert Wilbur Steele
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 148
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A land-classification system based upon potential natural vegetation is presented for the forests of central Idaho. It is based on reconnaissance sampling of about 800 stands. A hierarchical taxonomic classification of forest sites was developed using the habitat type concept. A total of eight climax series, 64 habitat types, and 55 additional phases of habitat types are defined and described. A diagnostic key is provided for field identification of the types based on indicator species used in development of the classification.
Author: Robert Wilbur Steele
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 872
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Author:
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 152
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Author: Robert Steele
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 90
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