General Land Office Surveys as a Source for Arkansas History: The Example of Ashley County

2004 ◽  
Vol 63 (2) ◽  
pp. 166 ◽  
Author(s):  
Don C. Bragg

Elem Sci Anth ◽  
2017 ◽  
Vol 5 (0) ◽  
pp. 3 ◽  
Author(s):  
Seth M. White ◽  
Casey Justice ◽  
Denise A. Kelsey ◽  
Dale A. McCullough ◽  
Tyanna Smith


1976 ◽  
Vol 41 (2) ◽  
pp. 206-208 ◽  
Author(s):  
W. Raymond Wood

AbstractData from United States General Land Office Surveys are commonly used to create vegetation models for the American Pioneer period. These models are then used as baselines for understanding past biotic change. It should be realized that many of these surveys were made near the end of a climatic episode (the Neo-Boreal or "Little Ice Age") when world temperatures were much lower than at the present time. These baselines therefore do not represent vegetational responses to a climatic regime like that of the present, and the vegetation models must be interpreted accordingly.



1978 ◽  
Vol 43 (1) ◽  
pp. 99-103 ◽  
Author(s):  
Frances B. King

Data from the United States General Land Office Surveys are frequently used to reconstruct the vegetation existing at the time of European settlement as a basis for biotic models. The vegetation recorded in those surveys had been influenced not only by climatic conditions considerably colder and more moist than the present, but by frequent, widespread burning as well. The effect of such burning on the distribution and composition of forest vegetation was as great as the climatic effects and must be taken into account when building prehistoric vegetational models in the Midwest.



1999 ◽  
Vol 29 (1) ◽  
pp. 106-114 ◽  
Author(s):  
Quanfa Zhang ◽  
Kurt S Pregitzer ◽  
David D Reed

The General Land Office (GLO) survey notes (1840-1856) were used to examine the interaction among natural disturbance, vegetation type, and topography in the presettlement forests of the Luce District, an ecological unit of approximately 902 000 ha in the Upper Peninsula of Michigan, U.S.A. The surveyors recorded 104 fire and 126 windthrow incidences covering 3.1 and 2.8% of the total length of the surveyed lines, respectively. The rotation periods over the entire landscape were 480 years for fire and 541 years for windthrow, but these varied with vegetation type and topographic position. Fire occurred more frequently on southerly aspects and at elevations where pinelands were concentrated. The density of windthrow events increased with elevation and slope, with the highest occurrence on westerly aspects. Based on the estimated rotation periods, we calculated that 7.5, 24.4, and 68.1% of the presettlement forest were in the stand initiation, stem exclusion, and old forest (including both understory reinitiation and old growth) stages, respectively. Pinelands and mixed conifers were the major components in both the stand initiation (34.5 and 31.1%) and the stem exclusion stage (20.9 and 39.8%), while mixed conifers (39.3%) and northern hardwoods (34.7%) were the major old-forest cover types. The diverse mosaic of various successional stages generated by natural disturbance suggests a "shifting-mosaic" landscape in this region.



1986 ◽  
Vol 13 (5) ◽  
pp. 571-580
Author(s):  
Michael Edmonds
Keyword(s):  


1971 ◽  
Vol 30 (3) ◽  
pp. 181
Author(s):  
Margaret Ross
Keyword(s):  


1998 ◽  
pp. 285-292
Author(s):  
Spencer L. Reid
Keyword(s):  


1924 ◽  
Vol 10 (4) ◽  
pp. 454
Author(s):  
George M. Stephenson ◽  
Milton Conover
Keyword(s):  


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