Soil-vegetation Correlations in the Sandhills and Rainwater Basin Wetlands of Nebraska PDF Download

Author: Nanette E. Erickson
Publisher:
ISBN:
Category : Sandhills (Neb.)
Languages : en
Pages : 88

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Author: Nanette Eileen Erickson
Publisher:
ISBN:
Category : Plant-soil relationships
Languages : en
Pages : 72

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As part of a national study, vegetation associated with known hydric and nonhydric soil series was sampled in selected wetlands in the Rainwater Basin and Sandhills regions of Nebraska. Weighted averages, presence/absence averages, and Michener averages were calculated for vegetation in each soil series and individual wetlands within soil series, based on importance values and ecological indices assigned by the National Wetland Plant List. Eleven times out of twelve, hydric soils were designated as wetlands based%on vegetation. One hydric soil in the Sandhills region supported a higher proportion of species adapted to non-wetland conditions. Four out of five samples of nonhydric soils supported a preponderance of upland species. Results obtained with weighted and presence absence averages may be preferred over weighted averages because information concerning species dominance (e.g., percent cover) is not required. However, correct identification of all species is more critical with use of presence/absence averages.

Author:
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 118

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Author: Nanette Eileen Erickson
Publisher:
ISBN:
Category : Hydric soils
Languages : en
Pages : 64

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 976

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309176794
Category : Science
Languages : en
Pages : 328

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"Wetlands" has become a hot word in the current environmental debate. But what does it signify? In 1991, proposed changes in the legal definities of wetlands stirred controversy and focused attention on the scientific and economic aspects of their management. This volume explores how to define wetlands. The committeeâ€"whose members were drawn from academia, government, business, and the environmental communityâ€"builds a rational, scientific basis for delineating wetlands in the landscape and offers recommendations for further action. Wetlands also discusses the diverse hydrological and ecological functions of wetlands, and makes recommendations concerning so-called controversial areas such as permafrost wetlands, riparian ecosystems, irregularly flooded sites, and agricultural wetlands. It presents criteria for identifying wetlands and explores the problems of applying those criteria when there are seasonal changes in water levels. This comprehensive and practical volume will be of interest to environmental scientists and advocates, hydrologists, policymakers, regulators, faculty, researchers, and students of environmental studies.

Author: Michael F. Baad
Publisher:
ISBN:
Category : Riparian ecology
Languages : en
Pages : 64

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Author: Dr. Darold P. Batzer
Publisher: Univ of California Press
ISBN: 0520959116
Category : Nature
Languages : en
Pages : 374

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This second edition of this important and authoritative survey provides students and researchers with up-to-date and accessible information about the ecology of freshwater and estuarine wetlands. Prominent scholars help students understand both general concepts of different wetland types as well as complex topics related to these dynamic physical environments. Careful syntheses review wetland soils, hydrology, and geomorphology; abiotic constraints for wetland plants and animals; microbial ecology and biogeochemistry; development of wetland plant communities; wetland animal ecology; and carbon dynamics and ecosystem processes. In addition, contributors document wetland regulation, policy, and assessment in the US and provide a clear roadmap for adaptive management and restoration of wetlands. New material also includes an expanded review of the consequences for wetlands in a changing global environment. Ideally suited for wetlands ecology courses, Ecology of Freshwater and Estuarine Wetlands, Second Edition, includes updated content, enhanced images (many in color), and innovative pedagogical elements that guide students and interested readers through the current state of our wetlands.

Author: Paul A. Johnsgard
Publisher: U of Nebraska Press
ISBN: 9780803225787
Category : Science
Languages : en
Pages : 280

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The Nebraska Sandhills is the largest area of sand dunes in the western hemisphere, covering an area about as large as Vermont, New Hampshire, and Rhode Island combined. Unlike most dunes, the Sandhills region supports an astonishing variety of wildlife. Sixty million years ago the area lay submerged in a vast inland sea. As the land lifted and the waters receded, the sandhills were formed, built upon a sandy floor above a sandy basement. Paul A. Johnsgard's appreciation for the region includes its evolution, a process that continues today making a very special place, patiently shaped by water, wind, and time. Sometimes 450 feet higher than their sloping valleys, the hills themselves are almost entirely covered with plants that manage to survive on an unstable substrate and in a climate of merciless heat and cold. They provide homes and resting places for rare species and sustain the livelihoods of a remarkable variety of people. Though firmly established in science, this book is an extended love letter to the Sandhills region and its people, plants, and animals. Johnsgard is now in his third decade of research in the Sandhills. This Fragile Land lets others see what he sees, a land with a fascinating range of geological, biological, and ecological vistas. Paul A. Johnsgard is Foundation Professor of the School of Biological Sciences at the University of Nebraska-Lincoln. Widely published throughout the English-speaking world, he has become a foremost authority on ornithology and bird behavior. His thirty-three books include Birds of the Great Plains, The Platte, Birds of the Rocky Mountains, Those of the Gray Wind, and Diving Birds of North America, all available from the University ofNebraska Press.

Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 50

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