Accession Number : ADA297208

Title :   ELF Communications System Ecological Monitoring Program: Upland Flora Studies.

Descriptive Note : Final rept.,

Corporate Author : IIT RESEARCH INST CHICAGO IL

Personal Author(s) : Mroz, Glenn D. ; Cattelino, Peter J. ; Gale, Margaret R. ; Jones, Elizabeth A. ; Jurgensen, Martin F.

PDF Url : ADA297208

Report Date : OCT 1994

Pagination or Media Count : 232

Abstract : The U.S. Navy has completed a program monitoring flora, fauna, and ecological relationships for possible effects from electromagnetic (EM) fields produced by its Extremely Low Frequency (ELF) Communications System. This report documents studies of upland flora conducted near the Navy's transmitting antenna in Michigan. From 1982 through 1993 researchers from the Michigan Technological University (MTU) monitored tree, herb, and fungal species dominant in areas nEar (treatment) and far (control) from the ELF antenna. Above-ground parameters included the productivity, physiology, and phenology of trees, as well as the morphology and phenology of an herb. Below-ground, the important association between tree roots and fungi were monitored. Investigators also measured ambient weather conditions, soil nutrients, and EM field intensities. The MTU research team used analysis of variance and covariance to examine the data. When site-by-year interactions were significant, correlations and regressions were used to determine whether residuals were related to EM exposure. Results suggest a possible subtle EM effect to the cambial and stemwood growth of some tree species but not to any other parameter. MTU investigators conclude no short-term, adverse effects on forest health from exposure to EM fields produced by the Naval Radio Transmitting Facility-Republic, Michigan.

Descriptors :   *ELECTROMAGNETIC FIELDS, *ELECTROMAGNETIC RADIATION, *PLANTS(BOTANY), CATIONS, WEATHER, EXPOSURE(GENERAL), MONITORING, PARAMETERS, HEALTH, TEAMS(PERSONNEL), NUTRIENTS, SOILS, TREES, FUNGI, ANTENNAS, ADVERSE CONDITIONS, ANIMALS, PHYSIOLOGY, PRODUCTIVITY, FORESTS, ECOLOGY, MICHIGAN, EXTREMELY LOW FREQUENCY, PLANT ROOTS.

Subject Categories : Biology
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE