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Title: Field methods to measure aquatic plant treatment method efficacy
Authors: United States. Army. Corps of Engineers. Seattle District.
Aquatic Plant Control Research Program (U.S.)
Killgore, K. Jack
Payne, Barry S.
Keywords: Aquatic plant control
Aquatic plants
Botanical research
Research methods
Field methods
Plant populations
Publisher: Environmental Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: The Aquatic Plant Control Research Program (APCRP) of the U.S. Army Engineer Waterways Experiment Station (WES) is developing field techniques to measure treatment efficacy and to determine site characteristics that influence the treatment efficacy. Treatment efficacy is considered a quantitative determination of the extent and duration of changes in problem aquatic plant populations attributable to the use of a treatment method (i.e., chemical, mechanical, biological, environmental). Depending on the plant species, efficacy can be determined or indicated by changes in biomass, areal distribution, or height of an aquatic plant in response to treatment. Aquatic plant biomass is sampled with a WES aquatic biomass sampler; areal distribution of aquatic plants is determined by aerial photography or with an electronic positioning system; and submersed aquatic plant height is measured with a fathometer (depth recorder) used with an electronic positioning and repositioning system (AGNAV). The APCRP has also developed field techniques to determine site characteristics that influence efficacy using commercially available instrumentation. This instrumentation can be used to measure treatment efficacy and to determine site characteristics simultaneously. Ultimately, it is anticipated that this research will lead to more standardized methods for monitoring aquatic site characteristics and treatment method efficacy for use by those responsible for planning, applying, and measuring results of field aquatic plant control programs.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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