Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 156
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Book Description
The objective of the U.S. Geological Survey-National Park Service Vegetation Mapping Program is to classify, describe, and map vegetation for most of the park units within the National Park Service (NPS). The program was created in response to the NPS Natural Resources Inventory and Monitoring Guidelines issued in 1992. Products for each park include digital files of the vegetation map and field data, keys and descriptions to the plant communities, reports, metadata, map accuracy verification summaries, and aerial photographs. Interagency teams work in each park and, following standardized mapping and field sampling protocols, develop products and vegetation classification standards that document the various vegetation types found in a given park.
Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 166
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Author: Carol A. Johnston
Publisher: Springer
ISBN: 3319615335
Category : Science
Languages : en
Pages : 303
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Book Description
Bridging the fields of ecosystem science and landscape ecology, this book integrates Dr. Carol Johnston's research on beaver ecosystem alteration at Voyageurs National Park. The findings about the vegetation, soils, and chemistry of beaver impoundments synthesized in the text provide a cohesive reference useful to wetland scientists, ecosystems and landscape ecologysts, wildlife managers, and students. The beaver, Castor canadensis, is an ecosystem engineer unequaled in its capacity to alter landscapes through browsing and dam building, whose population recovery has re-established environmental conditions that probably existed for millenia prior to its near extirpation by trapping in the 1800s and 1900s. Beavers continue to regain much of their natural range throughout North America, changing stream and forest ecosystems in ways that may be lauded or vilified. Interest in beavers by ecologists remains keen as new evidence emerges about the ecological, hydrological, and biogeochemical effects of beaver browsing and construction. There is a critical need for ecologists and land managers to understand the potential magnitude, persistence, and ecosystem services of beaver landscape transformation. The 88-year record of beaver landscape occupation and alteration documented by Dr. Carol Johnston and colleagues from aerial photography and field work provides a unique resource toward understanding the ecosystem effects and sustainability of beaver activity.
Author: Jeff Kirwan
Publisher:
ISBN:
Category :
Languages : en
Pages : 366
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Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 364
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"Contains keys to the identification of Native Plant Communities in the Laurentian Mixed Forest (LMF) Province and fact sheets with information on community composition and structure, landscape setting, soils, and natural histories. Summaries of ecological systems highlight the ecological processes that shape the terrestrial and palustrine vegetation of northeastern Minnesota"--Preface.
Author: Vilis Kurmis
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 226
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 512
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Author: Vilis Kurmis
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 192
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Author: Bruce R. Kulpan
Publisher:
ISBN:
Category :
Languages : en
Pages : 446
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Author: Lawrence Campbell Merriam
Publisher:
ISBN:
Category : Voyageurs National Park (Minn.)
Languages : en
Pages : 16
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