Combined effects of cadmium and zinc on a Lake Michigan zooplankton community

Journal Article · Thu Jan 01 04:00:00 EST 1981 · J. Great Lakes Res.; (United States)

DOI:https://doi.org/10.1016/S0380-1330(81)72048-3· OSTI ID:5524401

Marshall, J S; Mellinger, D L; Parker, J I

Two 3-week experiments with small enclosures were conducted in situ in northeastern Green Bay, Lake Michigan, to compare the effects of separate and combined additions of cadmium and zinc on the zooplankton community. The radioisotopes /sup 109/Cd and /sup 65/Zn were used as tracers to determine the sorption of cadmium and zinc by different particle size fractions. Separate additions of 2 ..mu..g Cd/L or 100 ..mu..g Zn/L, as well as combined additions of 2 ..mu..g Cd/L + 100 ..mu..g Zn/L or 1 ..mu..g Cd/L + 50 ..mu..g Zn/L, caused significant reductions of total crustacean density, species diversity, two community similarity indices, and final dissolved oxygen concentration. The effects of separate additions of 100 ..mu..g Zn/L were generally more pronounced than those of 2 ..mu..g Cd/L, but were similar to those of approx.5..mu..g Cd/L. The effects of combined additions of 2 ..mu..g Cd/L + 100 ..mu..g Zn/L were not significantly different from those of 100 ..mu..g Zn/L alone and were primarily due to zinc because it reduced cadmium uptake by the plankton (10-85 ..mu..m and >85 ..mu..m fractions). The effects of combined additions of 1 ..mu..g Cd/L + 50 ..mu..g Zn/L probably were also mainly due to zinc. The overall results of this study suggest that less than a ten-fold increase in the concentration of zinc in Lake Michigan (presently approx.5 ..mu..g/L) could have pronounced effects on the plankton community.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 5524401
• Journal Information: J. Great Lakes Res.; (United States), Journal Name: J. Great Lakes Res.; (United States) Vol. 7:3; ISSN JGLRD
• Country of Publication: United States
• Language: English

Related Subjects

560304* -- Chemicals Metabolism & Toxicology-- Invertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ORGANISMS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
CADMIUM
CADMIUM 109
CADMIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
GREAT LAKES
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LAKE MICHIGAN
LAKES
METALS
NUCLEI
PLANKTON
POLLUTION
RADIOISOTOPES
SORPTION
SURFACE WATERS
TOXICITY
TRACER TECHNIQUES
WATER POLLUTION
YEARS LIVING RADIOISOTOPES
ZINC
ZINC 65
ZINC ISOTOPES
ZOOPLANKTON