Strand-plain evidence for late Holocene lake-level variations in Lake Michigan

Thompson, Todd A.; Baedke, Steve J.

doi:10.1130/0016-7606(1997)109<0666:speflh>2.3.co;2

Cited by 103 publications

(138 citation statements)

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“…However, as suggested by our analyses and the work of others, restoration of the barrier beach and wetland plant communities would require an increase in the amount of sediments available in the littoral drift and a period of extremely low lake levels that would expose sediments for barrierbeach building and for seed-bank germination. The long-term water-level history of upstream lakes Michigan-Huron suggested that such extreme lows were not likely to occur soon on Lake Erie (Thompson and Baedke 1997). Sediment supply in the littoral drift of western Lake Erie had also been greatly reduced (S. Mackey, pers.…”

Section: Application To Managementmentioning

confidence: 99%

Use of historical and geospatial data to guide the restoration of a Lake Erie coastal marsh

Kowalski

Wilcox

1999

Wetlands

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Historical and geospatial data were used to identify the relationships between water levels, wetland vegetation, littoral drift of sediments, and the condition of a protective barrier beach at Metzger Marsh, a coastal wetland in western Lake Erie, to enhance and guide a joint federal and state wetland restoration project, Eleven sets of large-scale aerial photographs dating from 1940 through 1994 were interpreted to delineate major vegetation types and boundaries of the barrier beach. A geographic intbrmation system (G1S) was then used to digitize the data and calculate the vegetated area and length of barrier beach. Supplemented by paleoecological and sedimentological analyses, aerial photographic interpretation revealed that Metzger Marsh was once a drowned-river-mouth wetland dominated by sedges and protected by a sand barrier beach. Extremely high water levels, storm events, and reduction of sediments in the littoral drift contributed to the complete destruction of the barrier beach in 1973 and prevented its recovery. The extent of wetland vegetation, correlated to water levels and condition of the barrier beach, decreased from a high of 108 ha in 1940 to a low of 33 ha in 1994. The lack of an adequate sediment supply and low probability of a period of extremely low lake levels in the near future made natural reestablishment of the barrier beach and wetland vegetation unlikely. Therefore, the federal and state managers chose to construct a dike to replace the protective barrier beach. Recommendations stemmmg from this historical analysis, however, resulted in the incorporation of a water-control structure in the dike that will retain a hydrologic connection between wetland and lake. Management of the wetland will seek to mimic processes natural to the wetland type identified by this analysis.

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Section: Application To Managementmentioning

confidence: 99%

Use of historical and geospatial data to guide the restoration of a Lake Erie coastal marsh

Kowalski

Wilcox

1999

Wetlands

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“…The highlighted numbers show the location of selected wetlands described in the text. Modified from Thompson and Baedke (1997) with permission from Geological Society of America.…”

Section: Ground-water Discontinuities Influence Nonlinear Dynamics Inmentioning

confidence: 99%

Nonlinear dynamics in ecosystem response to climatic change: Case studies and policy implications

Burkett

Wilcox

Stottlemyer

et al. 2005

Ecological Complexity

239

177

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Many biological, hydrological, and geological processes are interactively linked in ecosystems. These ecological phenomena normally vary within bounded ranges, but rapid, nonlinear changes to markedly different conditions can be triggered by even small differences if threshold values are exceeded. Intrinsic and extrinsic ecological thresholds can lead to effects that cascade among systems, precluding accurate modeling and prediction of system response to climate change. Ten case studies from North America illustrate how changes in climate can lead to rapid, threshold-type responses within ecological communities; the case studies also highlight the role of human activities that alter the rate or direction of system response to climate change. Understanding and anticipating nonlinear dynamics are important aspects of adaptation planning since responses of biological resources to changes in the physical climate system are not necessarily proportional and sometimes, as in the case of complex ecological systems, inherently nonlinear. Published by Elsevier B.V.

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“…Using radiocarbon ages from basal organics in wetlands between successive beach ridges as a method to date beachridge sequences (Thompson, 1992) has been criticized because organic accumulation in the wetland may not be coeval with ridge emplacement (Larsen, 1994;Lichter, 1997;Thompson and Baedke, 1997;Johnston, 2004;Argyilan et al, 2005;Johnston et al, 2012). This has been especially true in the Lake Superior basin, which explains why the OSL method has become the preferred method (Argyilan et al, 2005;Johnston et al, 2012).…”

Section: Osl Agesmentioning

confidence: 99%

“…These beach-ridge studies document century-scale periodicity of lake-level change of ~1-2 m for the past 4700 years (Thompson and Baedke, 1997;Baedke and Thompson, 2000).…”

Section: Introductionmentioning

confidence: 99%

Coastal geology and recent origins for Sand Point, Lake Superior

Fisher¹,

Krantz²,

Castaneda³

et al. 2014

Coastline and Dune Evolution Along the Great Lakes

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Sand Point is a small cuspate foreland located along the southeastern shore of Lake Superior within Pictured Rocks National Lakeshore near Munising, Michigan. Park managers' concerns for the integrity of historic buildings at the northern periphery of the point during the rising lake levels in the mid-1980s greatly elevated the priority of research into the geomorphic history and age of Sand Point. To pursue this priority, we recovered sediment cores from four ponds on Sand Point, assessed subsurface stratigraphy onshore and offshore using geophysical techniques, and interpreted the chronology of events using radiocarbon and luminescence dating. Sand Point formed at the southwest edge of a subaqueous platform whose base is probably constructed of glacial diamicton and outwash. During the post-glacial Nipissing Transgression,

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Strand-plain evidence for late Holocene lake-level variations in Lake Michigan

Cited by 103 publications

References 0 publications

Use of historical and geospatial data to guide the restoration of a Lake Erie coastal marsh

Use of historical and geospatial data to guide the restoration of a Lake Erie coastal marsh

Nonlinear dynamics in ecosystem response to climatic change: Case studies and policy implications

Coastal geology and recent origins for Sand Point, Lake Superior

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