Download or read book The Effect of Hydroperiod on Floodplain Forest Production written by Joe Bill Birch and published by . This book was released on 1983 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating the Nature and Strength of Environmental Control on Floodplain Forest Communities written by Molly Van Appledorn and published by . This book was released on 2016 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flooding dynamics are expected to drive compositional patterns of woody overstory species in bottomland ecosystems, yet there is some evidence that flood variability may differentially constrain assemblage composition. Numerous studies have related distributions of plant species to floodplain landforms and geomorphic processes, documenting shifts in community composition along hydrologic and hydraulic gradients. Despite clear associations between species composition and local physical conditions, models predicting composition over broad areas are underdeveloped due to imprecise or implicit characterizations of environmental gradients, difficulty of reconciling fine-scale environmental heterogeneity with broader physical constraints, and overcoming cross-site differences in species' pools. My dissertation examines the relationships between environmental gradients and species' abiotic tolerances as characterized by functional traits in order to understand: 1) what processes constrain or support functional diversity of floodplain forests, and 2) at what scales these processes operate. First, in Chapter 2 I use a regional approach to characterize broad-scale patterns in hydrologic and functional trait diversity of floodplain forest ecosystems from Michigan's Lower Peninsula and Maryland. The analysis tests the hypothesis that if flooding dynamics impose a strong environmental filtering effect as demonstrated in the literature, regional differences in flood frequency, duration and intensity should result in different regional trait pools. I find that regional shifts in hydrologic regime are not matched by similar shifts in functional trait pools, suggesting that functional diversity is maintained through processes operating at finer scales. In Chapter 3 I evaluate the relative strength of environmental filtering, a community assembly process, at the river-valley segment scale by analyzing distributions of functional traits across implicit, regional gradients of inundation dynamics found throughout Michigan's Lower Peninsula. I find evidence of important biotic interactions in certain hydrogeomorphic settings that would indicate a highly variable role of inundation dynamics in shaping floodplain forest assemblages. In Chapter 4 I then build on the findings of the previous chapter to describe how patterns of environmental heterogeneity and flood regime interact across scales affect functional diversity. The results demonstrate the importance of hydrogeomorphic context in shaping patterns of functional composition across floodplain landforms. The final two chapters investigate how ecological strategies of woody overstory species shift under multi-scalar physical constraints within the Maryland Piedmont. In Chapter 5 I characterize flood regime of four Piedmont river-valley segments of contrasting size and morphologies using a validated 2D hydrodynamic model. I demonstrate the novel application of a 3D array of temperature sensors for validating spatially-explicit flood models, and summarize model results to show that patterns of inundation dynamics observed both within and among the four study sites are consistent with river-valley morphologic characteristics. Finally, I relate spatially-explicit flood regime quantifications to systematic surveys of floodplain forest composition to understand how functional attributes of assemblages shift along gradients of hydroperiod at and across multiple spatial scales. The results of Chapter 6 underscore the complexity of biophysical interactions in floodplain ecosystems as evidenced by shifts in functional trait distributions along gradients of aggregate flood regime at both the within- and among-site levels. Overall, my dissertation research has contributed to the advancement of floodplain forest ecology by describing trait-environment linkages at and across multiple spatial scales, demonstrated several novel methodological approaches, and offered new conceptual models of flooding and flood constraint on functional responses in bottomland ecosystems.

Download or read book Flooding and Its Effect on Trees written by and published by . This book was released on 1994 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Potential of U S Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect written by John M. Kimble and published by CRC Press. This book was released on 2002-09-25 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much attention has been given to above ground biomass and its potential as a carbon sink, but in a mature forest ecosystem 40 to 60 percent of the stored carbon is below ground. As increasing numbers of forests are managed in a wide diversity of climates and soils, the importance of forest soils as a potential carbon sink grows. The Potenti

Download or read book Forest Response to High Duration and Intensity Flooding Along Pool 26 of the Upper Mississippi River written by Robert J. Cosgriff and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many natural resource managers could not anticipate the effects that the flood of 1993 would have on floodplain forests of the Upper Mississippi River. Previous experience suggested that floodplain forests were adapted to such events and should only experience removal of upland a non-native species. However, when trees considered highly flood tolerant did not leaf out in the spring of 1994, natural resource managers began to realize the serious impact that a large-scale flood could have on floodplain forest communities. To better understand these impacts, researchers with the Long Term Resource Monitoring Program at Pool 26 of the Upper Mississippi River System (UMRS) began describing forest community response to the large-scale flood of 1993. The floodplain forests of the UMRS are some of the most productive ecosystems worldwide. These communities provide habitat and forage for many species of wildlife, produce timber, and provide a valuable carbon dioxide sink. Like many other plant communities, floodplain forest successional patterns are largely driven by disturbance events (e.g., fire, wind-throw, flooding, drought, and physical erosion/deposition). Black willow and eastern cottonwood regenerate on recent deposits of substrate (mainly sand) created by the river. As a result of annual floods, fine sediment drops out of suspension and the low landform occupied by the willow/cottonwood community develops into a low terrace. At the same time, the willow/cottonwood community is gradually being replaced by silver maple and green ash. The process of terrace building continues and communities of mixed forests and oak forests develop as elevation increases and the frequency of flooding decreases. Understanding how these communities respond to the various disturbance events, particularly large scale flooding, is important to natural resource managers who are trying to manage for specific or diverse floodplain forest communities.

Download or read book Holistic Science written by Gary Wayne Barrett and published by CRC Press. This book was released on 2001-10-16 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute of Ecology at the University of Georgia is recognized globally as an outstanding ecological research centre. The evolution of the Institute of Ecology paralleled the emergence of ecology as a major discipline along with the environmental awareness movement during the last half of the 20th century. Holistic Science: The Evolution of the Georgia Institute of Ecology (1940-2000) assists the reader in understanding not only the challenges, opportunities, and personalities that are bound with the history of the Georgia Institute of Ecology, but also the challenges and obstacles that are involved in establishing an effective interdisciplinary research programme within traditionally fragmented boundaries. Scholars and policy makers increasingly recognize that holistic approaches are needed to address major environmental issues and problems in the 21st century.

Download or read book Forests and Water written by Henry W. Anderson and published by . This book was released on 1976 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department of the Interior and Related Agencies Appropriations for 1982 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies and published by . This book was released on 1981 with total page 1690 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic Effects of a Changing Forest Landscape written by National Research Council and published by National Academies Press. This book was released on 2008-12-19 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all the outputs of forests, water may be the most important. Streamflow from forests provides two-thirds of the nation's clean water supply. Removing forest cover accelerates the rate that precipitation becomes streamflow; therefore, in some areas, cutting trees causes a temporary increase in the volume of water flowing downstream. This effect has spurred political pressure to cut trees to increase water supply, especially in western states where population is rising. However, cutting trees for water gains is not sustainable: increases in flow rate and volume are typically short-lived, and the practice can ultimately degrade water quality and increase vulnerability to flooding. Forest hydrology, the study of how water flows through forests, can help illuminate the connections between forests and water, but it must advance if it is to deal with today's complexities, including climate change, wildfires, and changing patterns of development and ownership. This book identifies actions that scientists, forest and water managers, and citizens can take to help sustain water resources from forests.

Download or read book For the Ocklawaha River Restoration Project Marion and Putnam Counties written by and published by . This book was released on 2001 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Response to High Duration and Intensity Flooding Along Pool 26 of the Upper Mississippi River written by Robert J. Cosgriff and published by . This book was released on 1999 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many natural resource managers could not anticipate the effects that the flood of 1993 would have on floodplain forests of the Upper Mississippi River. Previous experience suggested that floodplain forests were adapted to such events and should only experience removal of upland a non-native species. However, when trees considered highly flood tolerant did not leaf out in the spring of 1994, natural resource managers began to realize the serious impact that a large-scale flood could have on floodplain forest communities. To better understand these impacts, researchers with the Long Term Resource Monitoring Program at Pool 26 of the Upper Mississippi River System (UMRS) began describing forest community response to the large-scale flood of 1993. The floodplain forests of the UMRS are some of the most productive ecosystems worldwide. These communities provide habitat and forage for many species of wildlife, produce timber, and provide a valuable carbon dioxide sink. Like many other plant communities, floodplain forest successional patterns are largely driven by disturbance events (e.g., fire, wind-throw, flooding, drought, and physical erosion/deposition). Black willow and eastern cottonwood regenerate on recent deposits of substrate (mainly sand) created by the river. As a result of annual floods, fine sediment drops out of suspension and the low landform occupied by the willow/cottonwood community develops into a low terrace. At the same time, the willow/cottonwood community is gradually being replaced by silver maple and green ash. The process of terrace building continues and communities of mixed forests and oak forests develop as elevation increases and the frequency of flooding decreases. Understanding how these communities respond to the various disturbance events, particularly large scale flooding, is important to natural resource managers who are trying to manage for specific or diverse floodplain forest communities.

Download or read book Department of the Interior and related agencies appropriations for fiscal year 1983 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on the Department of the Interior and Related Agencies and published by . This book was released on 1983 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydroperiod Effects on Decomposition Processes Within a Coastal Plain Headwater Forested Floodplain written by S. Diane Eckles and published by . This book was released on 1995 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commission of Fine Arts written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on the Department of the Interior and Related Agencies and published by . This book was released on 1983 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 1392 pages. Available in PDF, EPUB and Kindle. Book excerpt: