Polychlorinated Biphenyl Contamination in Surficial Sediments of Northeastern Lake Michigan

1980 ◽  
Vol 6 (2) ◽  
pp. 167-171 ◽  
Author(s):  
Milagros S. Simmons ◽  
Donald I. Bialosky ◽  
Ronald Rossmann
Keyword(s):  
Lake Michigan ◽  
Polychlorinated Biphenyl ◽  
Surficial Sediments

Distribution of biogenic silica in the surficial sediments of Lake Michigan

1986 ◽  
Vol 23 (9) ◽  
pp. 1442-1449 ◽  
Author(s):  
Daniel J. Conley ◽  
Claire L. Schelske ◽  
Brian G. Dempsey ◽  
Charles D. Campbell ◽  
Teresa L. Newberry
Keyword(s):  
Spatial Distribution ◽  
Biogenic Silica ◽  
Lake Michigan ◽  
Sediment Accumulation ◽  
Sedimentation Rates ◽  
Surficial Sediments ◽  
Sediment Samples ◽  
High Productivity ◽  
Lake Bottom ◽  
High Concentrations

The spatial distribution of biogenic silica (BSi) in the surficial sediments of Lake Michigan is described from Shipek grab samples collected in 1975 and gravity cores obtained in 1983. Significantly smaller surficial BSi concentrations in the 1975 samples were attributed primarily to the inability of a Shipek grab to collect intact surficial sediment samples. Lower concentrations o.f BSi were found in nondepositional and transitional areas of sediment accumulation than in depositional basins. Therefore, BSi accumulation is restricted primarily to the 40% of the lake bottom where sediments are presently accumulating. High concentrations found in Green Bay surficial sediments are related to high productivity in the bay coupled with inputs of new silica from the Fox River. In the open lake, BSi concentrations of surficial sediments in depositional basins appeared to vary inversely with sedimentation rate in that lower BSi concentrations were found in areas with higher sedimentation rates.

scholarly journals Ratio of Mercury Concentration to PCB Concentration Varies with Sex of White Sucker (Catostomus commersonii)

Environments ◽  
2018 ◽  
Vol 5 (9) ◽  
pp. 94 ◽  
Author(s):  
Charles Madenjian ◽  
Andrew Stevens ◽  
Martin Stapanian ◽  
David Krabbenhoft ◽  
John DeWild ◽  
...  
Keyword(s):  
Total Mercury ◽  
Lake Michigan ◽  
Polychlorinated Biphenyl ◽  
Elimination Rate ◽  
Mature Female ◽  
Mature Male ◽  
White Sucker ◽  
Spawning Run ◽  
Federal Guidelines ◽  
Effect Of Age

The whole-fish total mercury (Hg) concentrations were determined in 25 mature female and 26 mature male white suckers (Catostomus commersonii) caught during their spawning run in the Kewaunee River, a tributary to Lake Michigan. The age of each fish was estimated using thin-sectioned otoliths, and total length (TL) and weight were determined for each fish. When adjusted for the effect of age, males were found to be 7% higher in Hg concentration than females. Nearly all (about 98%) of the Hg found in the white suckers was determined to be methylmercury. In an earlier study on the same 51 white suckers from the Kewaunee River spawning run, males were found to be 18% higher than females in polychlorinated biphenyl (PCB) concentration. We determined that the ratio of Hg concentration to PCB concentration in females was significantly higher than that in males. Thus, sex significantly interacted with contaminant type (Hg or PCBs) in determining contaminant concentrations. The most plausible explanation for this interaction was that males eliminated Hg at a faster rate than females, most likely due to the boosting of the Hg-elimination rate by certain androgens such as testosterone and 11-ketotestosterone. Hg concentrations in the white suckers were well below federal guidelines for fish consumption.

Lead in Lake Michigan and Green Bay surficial sediments

2010 ◽  
Vol 36 (1) ◽  
pp. 20-27 ◽  
Author(s):  
Erika L. Pfeiffer ◽  
Ronald Rossmann
Keyword(s):  
Lake Michigan ◽  
Surficial Sediments ◽  
Green Bay

Dose-Response in Perinatal Exposure To Polychlorinated Biphenyls (PCBs): the Michigan and North Carolina Cohort Studies

1996 ◽  
Vol 12 (3-4) ◽  
pp. 435-445 ◽  
Author(s):  
Joseph L. Jacobson ◽  
Sandra W. Jacobson
Keyword(s):  
North Carolina ◽  
General Population ◽  
Lake Michigan ◽  
Polychlorinated Biphenyl ◽  
Body Burden ◽  
Maternal Serum ◽  
Multivariate Statistical ◽  
The North ◽  
Preschool Period ◽  
Prospective Longitudinal

Two prospective, longitudinal studies—one in North Carolina and one in Michigan—have examined effects of prenatal polychlorinated biphenyl (PCB) exposure on behavioral and cognitive development in infants and children. The Michigan cohort was selected to overrepresent the offspring of women who had eaten relatively large quantities of Lake Michigan fish; the North Carolina cohort was drawn from the general population. Both studies collected umbilical cord serum and maternal serum and milk samples. In both studies, the children were assessed at birth, during infancy, and during the preschool period, and multivariate statistical analysis was used to control for confounding. When exposure was assessed in terms of maternal body burden, effects were seen only in the most heavily exposed children: the top 3-5% of the general population North Carolina sample and the top 11% of the fisheater sample in Michigan.

Organochlorine Insecticides and PCB in Surficial Sediments of Lake Michigan (1975)

1981 ◽  
Vol 7 (1) ◽  
pp. 42-50 ◽  
Author(s):  
R. Frank ◽  
R.L. Thomas ◽  
H.E. Braun ◽  
D.L. Gross ◽  
T.T. Davies
Keyword(s):  
Lake Michigan ◽  
Surficial Sediments ◽  
Organochlorine Insecticides

Bioassay-Derived 2,3,7,8-Tetrachlorodibenzo-p-dioxin Equivalents in PCB-Containing Extracts from the Flesh and Eggs of Lake Michigan Chinook Salmon (Oncorhynchus tshawytscha) and Possible Implications for Reproduction

1991 ◽  
Vol 48 (9) ◽  
pp. 1685-1690 ◽  
Author(s):  
Gerald T. Ankley ◽  
Donald E. Tillitt ◽  
John P. Giesy ◽  
Paul D. Jones ◽  
David A. Verbrugge
Keyword(s):  
Chinook Salmon ◽  
Lake Michigan ◽  
Oncorhynchus Tshawytscha ◽  
Polychlorinated Biphenyl ◽  
Small Sample Size ◽  
Total Concentration ◽  
Hepatoma Cell ◽  
Small Sample ◽  
Dorsal Muscle ◽  
Tetrachlorodibenzo P Dioxin

Concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQ), derived via the H4IIE rat hepatoma cell bioassay, were measured in polychlorinated biphenyl (PCB) containing extracts of flesh (dorsal muscle) and egg samples from 10 spawning chinook salmon (Oncorhynchus tshawytscha) from Lake Michigan. There was a marked maternal transfer of both TCDD-EQ and PCBs, and potency of the PCB mixture (expressed as picograms of TCDD-EQ per microgram of PCB) in eggs was 2.5 times greater than potency of the PCB mixture in dorsal muscle of the fish. There was a statistically significant, inverse relationship between the total concentration of PCBs in eggs and hatching success of the fish, with an effect concentration that corresponded to approximately 100 pg TCDD-EQ/g egg. Our results, based on a relatively small sample size, suggest that PCBs, in particular those with TCDD-type activity, may have influenced reproductive success of the fish.

Rates of decrease of polychlorinated biphenyl concentrations in five species of Lake Michigan salmonids

1999 ◽  
Vol 56 (1) ◽  
pp. 53-59 ◽  
Author(s):  
E Conrad Lamon III ◽  
S R Carpenter ◽  
C A Stow
Keyword(s):  
Natural Resources ◽  
Salmo Trutta ◽  
Lake Michigan ◽  
Lake Trout ◽  
Polychlorinated Biphenyl ◽  
Growth Parameters ◽  
Growth Parameter ◽  
First Order ◽  
Rate Of Increase ◽  
Concentration Changes

Dynamic linear models (DLM) were used to study time trends in annual average polychlorinated biphenyl (PCB) concentrations in five species of Lake Michigan salmonids using data collected from 1972 to 1994 by both the Michigan Department of Natural Resources and the Wisconsin Department of Natural Resources. DLMs use an adaptive fitting procedure to track changes over time in both the level (mean) of the series and the rate of increase or decline (growth rate), in contrast with other approaches that fit fixed parameters. We used DLMs to provide retrospective time series of estimates of rates of decline in PCB concentrations. Growth parameters indicate that PCB declines have slowed more than first-order models fit in the mid-1980s would predict. Growth parameters for brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) increased only slightly, indicating the most consistency with first-order dynamics. Coho (Oncorhynchus kisutch) and chinook salmon (Oncorhynchus tshawytscha) showed a pattern of high rates of decline in the early to mid-1980s followed by a period of slower PCB concentration changes. The temporal pattern of rates of decline for lake trout (Salvelinus namaycush) stood apart from the other species, with a growth parameter that increased steadily during the entire period of record.

Sign in / Sign up

Export Citation Format

Share Document