Accession Number : ADA297209

Title :   ELF Communications System Ecological Monitoring Program: Litter Decomposition and Microflora Studies.

Descriptive Note : Final technical rept. 1982-1994,

Corporate Author : IIT RESEARCH INST CHICAGO IL

Personal Author(s) : Bruhn, Johann N. ; Bagley, Susan T. ; Pickens, James B.

PDF Url : ADA297209

Report Date : OCT 1994

Pagination or Media Count : 206

Abstract : The U.S. Navy has completed a program monitoring flora, fauna, and ecological relationships for possible effects from electromagnetic fields produced by its Extremely Low Frequency (ELF) Communications System. This report documents studies of litter decomposition and soil microflora conducted near its transmitting antenna in Michigan. From 1982 through 1993 researchers from the Michigan Technological University (MTU) monitored overall litter decomposition, as well as microflora (bacteria and fungi) important both as processors of organic material and causative agents of tree disease. Studies were performed in areas near (treatment) and far (control) from the ELF antenna Study parameters included total number of streptomycete individuals and species; mass loss of maple, oak, and pine leaf litter; and frequency of red pine mortality from Armillaria root disease. The MTU research team used several statistical models; however, nested analysis of covariance was the most frequently used test. Based on the results of their study, MTU investigators conclude that. the EM fields produced by the Naval Radio Transmitting Facility-Republic, Michigan did not affect soil bacteria populations or the spread of the root disease. Loss of foliar mass suggests a statistically significant, but modest, increase in the rate of litter decomposition, possibly associated with electromagnetic exposure.

Descriptors :   *ELECTROMAGNETIC FIELDS, *PLANTS(BOTANY), MATHEMATICAL MODELS, EXPOSURE(GENERAL), MONITORING, PARAMETERS, BACTERIA, RED(COLOR), TEAMS(PERSONNEL), RATES, DISEASES, POPULATION, SOILS, TREES, FUNGI, ANTENNAS, ANIMALS, STATISTICAL ANALYSIS, MORTALITY RATE, DECOMPOSITION, ELECTROMAGNETISM, TRANSMITTING, ECOLOGY, MICROORGANISMS, MICHIGAN, EXTREMELY LOW FREQUENCY.

Subject Categories : Biology
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE