Accession Number : ADP001282

Title :   ELF (Extremely Low Frequency) Communications System Ecological Monitoring Program. Annual Report for Aquatic Ecosystems-Tasks 5.8, 5.9, 5.10.

Descriptive Note : Rept. for 10 Jul-31 Oct 82,


Personal Author(s) : Burton,Thomas M. ; Merritt,Richard W. ; Stout,R. Jean ; Taylor,W. W.

Report Date : 1982

Pagination or Media Count : 76

Abstract : Monitoring of the effects of ELF on stream ecosystems was initiated in July, 1982. Potential stream research sites selected included two sites on the Ford River in Dickinson County just west of Ralph, Michigan, two sites on the West Branch of the Escanaba River north of Ralph, Dickinson County, Michigan, and one site each on Schwartz and McGregor creeks, tributaries to the West Branch of the Escanaba. Preliminary sampling on all these streams included water chemistry as well as periphyton samples for species identification, cell counts, chlorophyll a/phaeophytin a production, and biomass production. Basket samplers for sampling benthic invertebrates were placed in the Ford and Escanaba rivers and removed at monthly intervals for species identification, individual counts, and diverity and secondary production estimates. Leaf packs of green and dry speckled (tag) alder leaves were placed in the Ford River, Escanaba River, and Schwartz Creek and will be removed at routine intervals until decomposition is complete. Aquatic invertebrates associated with leaf packs will be identified to species and enumerated. Population and migration studies of crayfish populations were initiated on the Ford River.

Descriptors :   *Aquatic biology, *Ecosystems, *Electromagnetic fields, Monitoring, Streams, Test methods, Data acquisition, Site selection, Aquatic insects, Algae, Fishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE