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Excerpt from A Pebble Count Procedure for Assessing Watershed Cumulative Effects Our interest is in shifts in the fine gravel and smaller portion of the distribution, not the median. Therefore, through a longitudinal stream reach (most commonly a pool and riffle complex) we modified the Wolman procedure into a zig-zag pattern such that a stream reach is sampled along a continuum instead of an individual cross-section. By doing this, numerous meander bends and all associated habitat features can be sampled as an integrated unit rather than as individual cross-sections. 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.
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"This manual contains overview information on treatment technologies, installation practices, and past performance."--Introduction.
This book identifies accumulated environmental, social and economic effects of oil and gas leasing, exploration, and production on Alaska's North Slope. Economic benefits to the region have been accompanied by effects of the roads, infrastructure and activies of oil and gas production on the terrain, plants, animals and peoples of the North Slope. While attempts by the oil industry and regulatory agencies have reduced many of the environmental effects, they have not been eliminated. The book makes recommendations for further environmental research related to environmental effects.
Alluvial fans are important sedimentary environments. They trap sediment delivered from mountain source areas, and exert an important control on the delivery of sediment to downstream environments, to axial drainages and to sedimentary basins. They preserve a sensitive record of environmental change within the mountain source areas. Alluvial fan geomorphology and sedimentology reflect not only drainage basin size and geology, but change in response to tectonic, climatic and base-level controls. One of the challenges facing alluvial fan research is to resolve how these gross controls are reflected in alluvial fan dynamics and to apply the results of studies of modern fan processes and Quaternary fans to the understanding of sedimentary sequences in the rock record. This volume includes papers based on up-to-date research, and focuses on three themes: alluvial fan processes, dynamics of Quaternary alluvial fans and fan sedimentary sequences. Linking the papers is an emphasis on the controls of fan geomorphology, sedimentology and dynamics. This provides a basis for integration between geomorphological and sedimentological approaches, and an understanding how fluvial systems respond to tectonic, climatic and base-level changes.
This comprehensive textbook brings together a unique vision and multidisciplinary approach – embracing and combining MD, DO and DPM foot and ankle training disciplines – into a singular focus on improving and mastering surgical treatment of foot and ankle disorders. It opens with a chapter presenting the specific preoperative considerations and protocols commonly followed by foot and ankle surgeons of all specialties. Divided into three main thematic sections detailing the forefoot, midfoot and hindfoot, each subsequent chapter follows a consistent chapter format presenting case examples, key surgical set-up and equipment needs and step-by-step clinical pearls for surgical excellence. Post-operative care and rehabilitation recommendations are also included for a well-rounded presentation of care from start to finish. Both common and complex pathologies and injuries are discussed, from bunion and hammertoe management to the Charcot foot and ankle, total ankle replacement, arthroscopy and arthroplasty techniques, amputations and biologics. Generous figures and intraoperative photos illustrate the procedures in vivid detail. The subspecialty of foot and ankle surgery is a highly specialized one, which is constantly evolving and improving. This speaks to the complexity of the foot and ankle complex, the multiple levels and articulations of the foot and the variety of pathologies encountered. This textbook leans on the unique experience and training of the OFAC attending surgeons and past fellows to reveal the pearls and keys to the efficient surgical treatment of the full gamut of foot and ankle pathologies. Ideally suited for residents and students whether MD, DO or DPM, Essential Foot and Ankle Surgical Techniques - EFAST for short - is a dynamic, multidisciplinary resource that covers the full range of pathologies and injuries an orthopedic surgeon or podiatrist would encounter in daily practice.