Identifying areas of wetland and wind turbine overlap in the south-central Great Plains of North America

2020 ◽  
Vol 35 (9) ◽  
pp. 1995-2011
Author(s):  
L. J. Heintzman ◽  
E. S. Auerbach ◽  
D. H. Kilborn ◽  
S. M. Starr ◽  
K. R. Mulligan ◽  
...  
Keyword(s):  
North America ◽  
Wind Turbine ◽  
Great Plains ◽  
The South ◽  
South Central

Karst Topography on Stagnant Glaciers

1964 ◽  
Vol 5 (37) ◽  
pp. 107-112 ◽  
Author(s):  
Lee Clayton
Keyword(s):  
North America ◽  
Great Plains ◽  
Northern Great Plains ◽  
Residual Soils ◽  
South Central

Abstract Karst topography may occur on stagnant, drift-covered parts of glaciers such as the Martin River Glacier in south-central Alaska. Glacial karst features there include ice sink-holes, tunnels, caves, sinking streams, blind valleys, large springs, natural bridges, lapiés, hums, and residual “soils” or ablation till. The glacial karst cycle is essentially the same as the limestone karat cycle. Glacial karst is rare today but was widespread on stagnant glaciers in areas such as the northern Great Plains of North America in late Wisconsin time.

scholarly journals Past Like a Mask, or, The Trouble with “The Trouble with Wilderness”

2013 ◽  
Author(s):  
Thomas Isern
Keyword(s):  
North America ◽  
Great Plains ◽  
Regional Identity ◽  
The South ◽  
Environmental Determinism ◽  
Variations On A Theme

Twenty years ago I was much smarter than I am today. Contemplating a Fulbright fellowship at the Turnbull Library, I had most of the answers worked out before leaving American shores; all I needed was some evidence. Well schooled in the historical traditions of the Great Plains of North America, which are grounded in the environmental determinism of Texas historian Walter P. Webb, I knew what must have happened in the tussock grasslands of the South Island. In subhumid grasslands colonized by Britons, certain interactions of humankind with the environment must have taken place, many of them symbolized by arcane acts of adaptation—the application of fire to the biome, the bounding of lands with fences and plantings, struggles with animal pests and weedy plants, contests between herdsmen and plowmen, and ultimately the crystallization of a regional identity and a defined character. The rest would be detail, variations on a theme.

The Palaeoindian–Archaic transition in North America: new evidence from Texas

Antiquity ◽  
2002 ◽  
Vol 76 (294) ◽  
pp. 980-990 ◽  
Author(s):  
C. Britt Bousman ◽  
Michael B. Collins ◽  
Paul Goldberg ◽  
Thomas Stafford ◽  
Jan Guy ◽  
...  
Keyword(s):  
North America ◽  
Early Holocene ◽  
The South ◽  
South Central ◽  
Social Experimentation ◽  
New Evidence

The transition from Palaeoindian to Archaic societies in North America is often viewed as a linear progression over a brief but time-transgressive period. New evidence from the Wilson-Leonard site in Texas suggests social experimentation by Palaeoindians over a 2500-year period eventually resulted in Archaic societies. The process was neither short nor linear, and the evidence shows that different but contemporaneous lifeways existed in a variety of locales in the south-central US in the Early Holocene.

Staurothele nemorum sp. nov. (Ascomycota: Verrucariaceae), with a revised key to North American Staurothele s. lat.

2019 ◽  
Vol 51 (6) ◽  
pp. 495-506 ◽  
Author(s):  
Caleb A. MORSE ◽  
Douglas LADD
Keyword(s):  
North America ◽  
Great Plains ◽  
North American ◽  
The South ◽  
Southern Great Plains ◽  
The North ◽  
Western Great Plains

AbstractStaurothele nemorum is described as new to science from the southern Great Plains of central North America. The species is characterized by a thin, areolate, epilithic thallus, sessile perithecia, globose to oblong hymenial algal cells and 8-spored asci. Staurothele hymenogonia is restored to the North American flora, based on material from the south-western Great Plains. An updated key to North American members of Staurothele s. lat. is provided.

A taxonomic reevaluation of North American Daphnia (Crustacea: Cladocera). II. New species in the Daphnia pulex group from the south-central United States and Mexico

1996 ◽  
Vol 74 (4) ◽  
pp. 632-653 ◽  
Author(s):  
Paul D. N. Hebert ◽  
Terrie L. Finston
Keyword(s):  
United States ◽  
North America ◽  
Interspecific Hybrids ◽  
Daphnia Pulex ◽  
Species Boundaries ◽  
The South ◽  
Additional Species ◽  
Genetic Studies ◽  
South Central ◽  
Central United States

Although the establishment of species boundaries in the genus Daphnia is complicated by the prevalence of interspecific hybrids and by phenotypic plasticity, genetic studies can resolve these complexities. This investigation employed allozyme analyses to critically assess species boundaries in members of the Daphnia pulex group from the south-central United States and Mexico. These studies demonstrated the occurrence of three common Nearctic species (obtusa, pulex, pulicaria), but also revealed the occurrence of three previously unrecognized taxa (cheraphila, pileata, prolata). All of these newly described species have their distributional centroid in this region of North America and are restricted to clay-water habitats. F1 hybrids were detected between three pairs of species (cheraphila × prolata, obtusa × pileata, pulex × pulicaria), but only the latter hybrids were common. The discovery of daphniid taxa endemic to this region of North America contrasts with the results of a broader survey of sites in Canada, and suggests that additional species await description from other unglaciated regions of North America.

scholarly journals Karst Topography on Stagnant Glaciers

1964 ◽  
Vol 5 (37) ◽  
pp. 107-112 ◽  
Author(s):  
Lee Clayton
Keyword(s):  
North America ◽  
Great Plains ◽  
Northern Great Plains ◽  
Residual Soils ◽  
South Central

AbstractKarst topography may occur on stagnant, drift-covered parts of glaciers such as the Martin River Glacier in south-central Alaska. Glacial karst features there include ice sink-holes, tunnels, caves, sinking streams, blind valleys, large springs, natural bridges, lapiés, hums, and residual “soils” or ablation till. The glacial karst cycle is essentially the same as the limestone karat cycle. Glacial karst is rare today but was widespread on stagnant glaciers in areas such as the northern Great Plains of North America in late Wisconsin time.

Relict nebkhas (pimple mounds) record prolonged late Holocene drought in the forested region of south-central United States

2009 ◽  
Vol 71 (3) ◽  
pp. 329-339 ◽  
Author(s):  
Christopher L. Seifert ◽  
Randel Tom Cox ◽  
Steven L. Forman ◽  
Tom L. Foti ◽  
Thad A. Wasklewicz ◽  
...  
Keyword(s):  
United States ◽  
Great Plains ◽  
Late Holocene ◽  
Coarse Grained ◽  
The South ◽  
Arkansas River ◽  
South Central ◽  
Central United States ◽  
Landscape Response ◽  
Vegetation Loss

AbstractThe origin and significance of pimple mounds (low, elliptical to circular dune-like features found across much of the south-central United States) have been debated for nearly two centuries. We cored pimple mounds at four sites spanning the Ozark Plateau, Arkansas River Valley, and Gulf of Mexico Coastal Plain and found that these mounds have a regionally consistent textural asymmetry such that there is a significant excess of coarse-grained sediment within their northwest flanks. We interpret this asymmetry as evidence of an eolian depositional origin of these mounds and conclude they are relict nebkhas (coppice dunes) deposited during protracted middle to late Holocene droughts. These four mounds yield optically stimulated luminescence ages between 2400 and 700 yr that correlate with well-documented periods of eolian activity and droughts on the southern Great Plains, including the Medieval Climate Anomaly. We conclude vegetation loss during extended droughts led to local eolian deflation and pimple mound deposition. These mounds reflect landscape response to multi-decadal droughts for the south-central U.S. The spatial extent of pimple mounds across this region further underscores the severity and duration of late Holocene droughts, which were significantly greater than historic droughts.

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