Sand Dunes Along the East Shore of Lake Michigan
Author | : Christopher William Drexler |
Publisher | : |
Total Pages | : 44 |
Release | : 1969 |
Genre | : Sand dunes |
ISBN | : |
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Author | : Christopher William Drexler |
Publisher | : |
Total Pages | : 44 |
Release | : 1969 |
Genre | : Sand dunes |
ISBN | : |
Author | : Kevin G. McKeehan |
Publisher | : |
Total Pages | : 0 |
Release | : 2022 |
Genre | : Electronic dissertations |
ISBN | : |
This dissertation attempts to fill a gap in knowledge regarding conditions amongst the dunefields of Lake Michigan's eastern shore. Much is now known about the evolution and geochronology of these unique freshwater dune systems. The region's coastal dunes began forming during the Nipissing high stand phase (~5.5 ka) of ancestral Lake Michigan. Since then, according to the chronology constructed from several studies, the coastal dunes then underwent several periods of stability and instability along the entire shoreline. However, questions remain regarding dune conditions and variability since ~1900. The goal of this dissertation was to determine if changes have occurred to the region's coastal dune systems in the last ~120 years and what might be driving those changes. Given that dune systems are sensitive to biotic and abiotic variables, examining the last ~120 years of dune behavior could potentially reveal how Lake Michigan coastal dunes are responding to anthropogenic climate change and human development.Three studies, each comprising a dissertation chapter (Chapters 2-4), were conducted to help close this knowledge gap. Each chapter is broadly linked through an ecogeomorphic lens, particularly through the relationship between dunes and vegetation, which are interconnected in important ways. In Chapter 2, changes in dunefield vegetation and morphology were determined at several locations along the eastern Lake Michigan shoreline through the use of ground-level repeat photography. The second dissertation study-Chapter 3-concerns the spatiotemporal analysis of historical changes of blowouts, which are important indicators of significant disturbance in the dunes. In this chapter, blowouts were mapped from aerial images at three timestamps-1938, 1986-8, and 2018-and the changes quantified. Chapter 4, the final dissertation study, explores the relationship between terrain ruggedness and vegetation in a coastal dunefield along Lake Michigan by calculating two terrain indices-Riley's Terrain Ruggedness Index (TRI) and Sappington's Vector Ruggedness Measure (VRM)-and the Soil-Adjusted Vegetation Index (SAVI). Through a land systems framework, the results were compared to determine if any correlation exists between the ruggedness of dunes and vegetation.In the first two dissertation studies, the results show a clear expansion of vegetation at the expense of previously bare sand. In the final study, the values from TRI and VRM and the values from the Soil-Adjusted Vegetation Index (SAVI) were not correlated overall, especially where one type of vegetation was dominant. However, within one land system-the dune barrens -- a moderate-to-strong negative correlation existed between terrain ruggedness and vegetation. Moreover, evidence suggests that vegetation has transformed the dune barrens land system area within the modern period. Overall, the results of these three studies demonstrate that vegetation is expanding over previously bare surfaces in coastal dunes along the eastern shore of Lake Michigan and has a considerable influence on regional dune conditions. While the precise driver(s) of this transformation is unclear, the regional-scale nature of these results suggests a uniform control is affecting these changes. As described in this dissertation, it is possible that an increase in precipitation since the 1930s, elevated atmospheric CO2 and N concentrations, a reduction in wind power, some other change in climate drivers, or a combination of many factors is responsible for the expansion in vegetation. It is also possible the trend in vegetation growth in Lake Michigan's coastal dunes is a lagged response to an earlier climate event.
Author | : Henry Chandler Cowles |
Publisher | : |
Total Pages | : 250 |
Release | : 1899 |
Genre | : Plant ecology |
ISBN | : |
Author | : Jim DuFresne |
Publisher | : University of Michigan Press |
Total Pages | : 196 |
Release | : 2005 |
Genre | : Nature |
ISBN | : 9780472031184 |
"With its comprehensive explanation of dune formation and variety, the book also includes information on activities at the dunes, including hiking, skiing, picnic and swimming areas, directions and parking, number of campsites, interesting and unique natural features found in and around each dune, and types of dune flora and fauna. Detailed maps provide a ready guide for all outdoor activities." "With nearly 50 duneland areas, from the remote to the well know, this book will inspire travelers to take a closer look at one of the most awesome natural features found in the state. Even those who think they know the dunes well will find this book an amazing resource for their trips back to a specific dune or their exploration of a new dune."--BOOK JACKET.
Author | : Rita Hadra Rusco |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 0 |
Release | : 2014-05-31 |
Genre | : North Manitou Island (Mich.) |
ISBN | : 9781493792610 |
"Rita Hadra Rusco, a North Manitou Islander for nearly fifty years, has turned her love for the island into a warm story reflecting not only the island's history but the character, romance and determination of its people."--Back cover.
Author | : Timothy G. Fisher |
Publisher | : Geological Society of America |
Total Pages | : 244 |
Release | : 2014-07-30 |
Genre | : Nature |
ISBN | : 0813725089 |
"Stemming from research in the three upper Great Lakes basins (Superior, Michigan, and Huron), the volume is organized by geologic time, beginning with the reconstructed drainage for glacial Lake Minong southward across Michigan's Upper Peninsula and ending with the use of remote sensing and geospatial analysis in monitoring Lake Michigan coastal dunes"--
Author | : Elizabeth Brockwell-Tillman |
Publisher | : |
Total Pages | : 36 |
Release | : 1998 |
Genre | : Sand dune ecology |
ISBN | : |
Author | : Rich Ackerman |
Publisher | : |
Total Pages | : 0 |
Release | : 2023-05-30 |
Genre | : |
ISBN | : |
In the photograph to the left, through my 210 mm lens, the city of Chicago's incredible skyline shows the closeness of our country's 3rd largest city to the Indiana Dunes National Park.I've been fortunate to live within just a few miles of the largest inland sea - the Great Lakes - more specifically the region of Lake Michigan's Eastern Shore. The most complete yet complex, living, dune ecosystem in the world, it offers immense beauty, diversity of flora and trees and the presence of its four distinct seasons. It's rare to find this type of environment anywhere else in the world, much less the "fly over midsection" of North America.I have spent the better part of my life experiencing and photographing the miles of beach & towering perch dunes, marshes and fens, forests, plants and wildlife. The Dunes are a living, breathing unique ecosystem; consistently cycling through the years with water rising and falling - its shorelines ever changing. Offshore winds push dune sand that can cover entire forests, while plant and animal species still faithfully regenerate themselves as they've done ever since the glaciers receded thousands of years ago.Many people will never get to see and make the spiritual connection with the Eastern Shore Dunes and experience this place during each beautiful climate season. With my book of lovingly curated and printed photographs and Roberta's spiritual reflections of them, I want to show the dunes through my camera lens with the same heightened excitement and emotion as when I originally photographed the scenes and images in this book. For those who do live here, it is my hope to provide a keepsake, evoking lasting memories of times past, present and future. Not just for themselves, but for their children and their children's children.
Author | : United States. National Park Service |
Publisher | : |
Total Pages | : 126 |
Release | : 1917 |
Genre | : Michigan, Lake |
ISBN | : |
On the advisibility of securing all that portion of the counties of Lake, Laporte, and Porter, in the state of Indiana, bordering upon lake Michigan, and commonly known as the Sand dunes, with a view to creating a national park.
Author | : Margaret Beattie Bogue |
Publisher | : University of Wisconsin Pres |
Total Pages | : 402 |
Release | : 1985 |
Genre | : Travel |
ISBN | : 9780299100001 |
This superbly organized guide to the 1,600-mile shoreline of Lake Michigan describes 182 historical sites and points of interest. Generously illustrated, it includes historical sketches, keys to recreation, and a large fold-out planner map.