Poster Library

Caner Ferhatoglu and Bradley Miller – North Central Soil Fertility Conference November 16-17, 2022 Caner-Ferhatoglu-Poster-North-Central-Soil-Fertility-Conference-Final-VersionDownload Abstract In this study, the effectiveness of six types of FS methods from four categories (filter, wrapper, embedded, and hybrid) were compared. These FS algorithms chose relevant covariates from a set of 1049 environmental covariates for predicting five soil fertility…

Meyer Bohn and Bradley Miller – Iowa Water Center Conference April 6-8, 2021 Bohn-Dows-Topsoil-Thickness-IWC Abstract Abstract The objectives of this study were to assess spatial predictions of topsoil thickness from models produced from ensemble machine learning algorithms along with assessing the uncertainty estimations associated with those models. Boosting is one example of an ensemble method,…

A statistical comparison of soil properties classified via Digital Hillslope Position and Floodplain algorithm vs. gSSURGO and Iowa physiographic regions.

A new approach for delineating noncontributing areas of watersheds is presented. Maps of soil properties offer indicators of subtle landscape features and hydrologic functions. Our approach is to identify soil map units that reflect upland ponding and then define the sum of their watersheds as the noncontributing area. The decrease in time required to delineate…

Grid, random, and stratified sampling each come with unique advantages and disadvantages.
However, more efficient sampling could be accomplished with a more strategic sampling design.

The map produced by William Smith in 1815 is recognized as the first geological map of Britain, but it also represents a benchmark in cartography for the Earth sciences. Following the agrogeology concepts of the time, the title claims that by mapping the geologic strata, the varieties of soil are also shown. The new opportunity…

Native prairie vegetation strips on contours (STRIPS) are a relatively new conservation strategy which bring a host of ecosystem services. They also add a degree of complexity to what would otherwise be a simplified landscape. This study analyzes the impact of the presence of the prairie strips on surrounding soil properties.

The City of Ames Power Plant opened in 1901 as a coal-fired plant, converted to coal-fuel and refuse derived fuel (RDF) in 1975, and then to exclusively RDF in 2016. Fly ash that escapes the plant’s air pollution removal system contains heavy metals originally present in the fossil fuels, and are transported from the smoke…

Loess is known to be widespread across the mid-latitudes of most continents, but it has not been as obvious to look for loess in Iran. Even though articles regarding loess sediments in Iran exist, global and regional maps typically indicate little to no loess within Iran

Yones_LoessFest-2016Download