Accession Number : ADA204485


Title :   Environmental Baseline Studies of St. Marys River Near Neebish Island, Michigan, Prior to Proposed Extension of Navigation Season, 1981. Great Lakes- St. Lawrence Seaway, Navigation Season Extension Program


Descriptive Note : Final rept.


Corporate Author : MICHIGAN STATE UNIV EAST LANSING DEPT OF FISHERIES AND WILDLIFE


Personal Author(s) : Liston, Charles R ; McNabb, Clarence D ; Duffy, Walter ; Ashton, Diane ; Ligman, Rick


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a204485.pdf


Report Date : Jun 1983


Pagination or Media Count : 354


Abstract : The objective of this study was to expand existing biological, physical and chemical data for the St. Marys River to monitor possible environmental changes associated with winter navigation-related activities, such as icebreaking and winter ship movements. The field data gathered for this study also supplements data taken during 1979 and 1980. In addition, Lake George, a non-navigated portion, was studied as a potential control site. This report contains data on the following: Benthic macroinvertebrates; aquatic macrophytes; ichthyoplankton; juvenile and adult fish; sediment chemistry of shipping vs. non-shipping channels; winter sedimentation rates; and physical and chemical aspects of the water.


Descriptors :   *RIVERS , ICE BREAKUP , WATER , SITES , WINTER , BASE LINES , VISIBILITY , INVERTEBRATES , WATER TRAFFIC , SEDIMENTS , SEDIMENTATION , FISHES , AQUATIC ANIMALS , MICHIGAN , SEASONS , AQUATIC PLANTS , ONTARIO , ENVIRONMENTS , CHEMICAL PROPERTIES


Subject Categories : Ecology


Distribution Statement : APPROVED FOR PUBLIC RELEASE