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| Columbia Environmental Research Center |
Edited By Robert B. Jacobson
Volume comprises the Cover/Contents, Chapters 1, 2, 3, 4, 5, 6, and Glossary
Extensive
efforts are underway along the Lower Missouri River to rehabilitate ecosystem
functions in the channel and flood plain. Considerable uncertainty inevitably
accompanies ecosystem restoration efforts, indicating the benefits of an adaptive
management approach in which management actions are treated as experiments,
and results provide information to feed back into the management process. The
Overton Bottoms North Unit of the Big Muddy National Fish and Wildlife Refuge
is a part of the Missouri River Fish and Wildlife Habitat Mitigation Project.
The dominant management action at the Overton Bottoms North Unit has been excavation
of a side-channel chute to increase hydrologic connectivity and to enhance shallow,
slow current-velocity habitat. The side-channel chute also promises to increase
hydrologic gradients, and may serve to alter patterns of wetland inundation
and vegetation community growth in undesired ways. The U.S. Geological Survey’s
Central Region Integrated Studies Program (CRISP) undertook interdisciplinary
research at the Overton Bottoms North Unit in 2003 to address key areas of scientific
uncertainty that were highly relevant to ongoing adaptive management of the
site, and to the design of similar rehabilitation projects on the Lower Missouri
River. This volume presents chapters documenting the surficial geologic, topographic,
surface-water, and ground-water framework of the Overton Bottoms North Unit.
Retrospective analysis of vegetation community trends over the last 10 years
is used to evaluate vegetation responses to reconnection of the Overton Bottoms
North Unit to the river channel. Quasi-experimental analysis of cottonwood growth
rate variation along hydrologic gradients is used to evaluate sensitivity of
terrestrial vegetation to development of aquatic habitats. The integrated, landscape-specific
understanding derived from these studies illustrates the value of scientific
information in design and management of rehabilitation projects.
Download the entire report as a PDF file (18.6 MB) (or as individual chapters below)
Download a free copy of Acrobat Reader
Chapter 1 (2.10 mb pdf)
Introduction: Science to Support Adaptive Habitat Management, Overton
Bottoms North Unit, Big Muddy National Fish and Wildlife Refuge, Missouri, by
Robert B. Jacobson.
Chapter 2 (3.99 mb pdf)
Surficial Alluvium and Topography of the Overton Bottoms North Unit, Big
Muddy National Fish and Wildlife Refuge in the Missouri Valley and its
Potential Influence on Environmental Management, by John Holbrook, Greg Kliem,
Chima Nzewunwah, Zen Jobe, and Ron Goble.
Chapter 3 (3.05 mb pdf)
Hydrologic Interactions Among Rainfall, Side-Channel Chutes, the Missouri
River, and Ground Water at Overton Bottoms North, Missouri, 1998-2004, by
Brian P. Kelly.
Chapter 4 (3.52 mb pdf)
Retrospective Analysis of Land Cover at Overton Bottoms, Missouri, by
Jeffrey D. Spooner and Keith F. Landgraf.
Chapter 5 (1.49 mb pdf)
Cottonwood (Populus deltoides) Growth Response to Hydrologic
Alteration, Overton Bottoms North, Missouri River Flood Plain, by Thomas M.
Faust, Robert Jacobson, and Steven G. Pallardy.
Chapter 6 (155 kb pdf)
Implications for Adaptive Habitat Management of the Overton Bottoms North
Unit, Big Muddy National Fish and Wildlife Refuge, Missouri, by Carol A. Finn
and Robert B. Jacobson.
Glossary, Acronyms, and back cover (178 kb)
Jacobson, R.B., ed., 2006, Science to support adaptive habitat managment: Overton Bottoms North Unit, Big Muddy National Fish and Wildlife Refuge, Missouri: U.S. Geological Survey Scientific Investigations Report 2006-5086, 116 p.
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