Degree Type

Thesis

Date of Award

2007

Degree Name

Master of Science

Department

Natural Resource Ecology and Management

Major

Environmental Science

First Advisor

Richard Schultz

Second Advisor

Tom Isenhart

Abstract

A survey comparing buffering of concentrated flow paths (CFPs) by natural forest buffers and grass filter strips was conducted at 11 farms in three northeast Missouri watersheds. Results from the survey examining 74 CFPs occurring in row crop fields found that natural forest buffers dispersed flow from 80% of CFPs before they reached the stream, and grass filter strips dispersed 100%. It was estimated that 473 metric tons of soil moved to the riparian buffers via CFPs since the last tillage. Of the 473 metric tons, 97 metric tons of sediment was estimated lost to stream channels, all through natural forest buffers. Results suggest that the presence of higher densities of rooted vegetation and the wider buffer areas of grass filter strips are responsible for the higher percentage of buffered CFPs. Adding a grass filter strip along natural forest buffers may improve water quality by reducing sediment loss to streams.

DOI

https://doi.org/10.31274/rtd-180813-7422

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Kris William Knight

Language

en

Proquest ID

AAI1447494

OCLC Number

213494431

ISBN

9780549334248

File Format

application/pdf

File Size

71 pages

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