Historic tenant farmsteads are often thought to be redundant archaeological resources because of their limited temporal range and function which acts to limit the diversity of their archaeological assemblages. However, work has not been done that confirms this equivalence, and archaeologists often write off tenant farmsteads as being too modern or too disturbed to warrant investigation. This is a problematic approach as tenant farmsteads are quickly eroding from the American landscape and a representative sample of sites need to be investigated and preserved before they’re gone. This thesis tests different sampling strategies and field methods that may allow for the efficient investigation of tenant farmsteads without jeopardizing historical knowledge. The results show that the sites studied in this thesis are in fact redundant and a number of different methods can be used to investigate them in a much more efficient manner.

Fish community data were used to develop an index of biotic integrity (IBI) to quantify habitat degradation in oxbow lakes of the Delta region of the Yazoo River Basin. Daytime boat electrofishing was used to sample the fish assemblage of 30 oxbow lakes during 2006-2007. We evaluated 70 candidate metrics based on their responses to measures of anthropogenic disturbance. Six metrics were retained for inclusion in the IBI: species richness, Shannon’s diversity (H’), average tolerance, and catch rates of buffalo, orangespotted sunfish, and litho-psammophilic spawners. The six IBI metrics showed strong multivariate relationships with measures of habitat degradation in a canonical correlation analysis. Spearman’s rank correlation and scatterplot analysis showed that IBI scores changed in a predictable pattern along gradients of habitat degradation. Three additional lakes were sampled in 2008 and were used to successfully validate the IBI. Biotic integrity was found to be impaired in most oxbow lakes of the Mississippi Delta.