Accession Number:

ADA142222

Title:

Aquatic Plant Control Research Program. Field Methods to Measure Aquatic Plant Treatment Method Efficacy.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s):

Report Date:

1984-04-01

Pagination or Media Count:

32.0

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.

Subject Categories:

  • Biology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE