Richard Rediske | Grand Valley State University (original) (raw)

Papers by Richard Rediske

Environmental Science & Technology, 2016

PLOS ONE, 2016

Comparison of polychlorinated biphenyl (PCB) concentrations between the sexes of mature fish may ... more Comparison of polychlorinated biphenyl (PCB) concentrations between the sexes of mature fish may reveal important behavioral and physiological differences between the sexes. We determined whole-fish PCB concentrations in 23 female summer flounder Paralichthys dentatus and 27 male summer flounder from New Jersey coastal waters. To investigate the potential for differences in diet or habitat utilization between the sexes, carbon and nitrogen stable isotope ratios were also determined. In 5 of the 23 female summer flounder, PCB concentrations in the somatic tissue and ovaries were determined. In addition, we used bioenergetics modeling to assess the contribution of the growth dilution effect to the observed difference in PCB concentrations between the sexes. Whole-fish PCB concentrations for females and males averaged 87 and 124 ng/g, respectively; thus males were 43% higher in PCB concentration compared with females. Carbon and nitrogen stable isotope ratios did not significantly differ between the sexes, suggesting that diet composition and habitat utilization did not vary between the sexes. Based on PCB determinations in the somatic tissue and ovaries, we predicted that PCB concentration of females would increase by 0.6%, on average, immediately after spawning due to release of eggs. Thus, the change in PCB concentration due to release of eggs did not explain the higher PCB concentrations observed in males. Bioenergetics modeling results indicated that the growth dilution effect could account for males being 19% higher in PCB concentration compared with females. Thus, the bulk of the observed difference in PCB concentrations between the sexes was not explained by growth dilution. We concluded that a higher rate of energy expenditure in males, stemming from greater activity and a greater resting metabolic rate, was most likely the primary driver for the observed difference in PCB concentrations between the sexes.

ABSTRACT Persistent organic pollutants can be transported globally through both physical processe... more ABSTRACT Persistent organic pollutants can be transported globally through both physical processes and biological transport. We assessed the magnitude and distribution of pollutant transport to Great Lakes tributaries by migratory Pacific salmon (Oncorhynchus spp.). In 10 streams, brook trout (Salvelinus fontinalis), sculpin (Cottus spp.), and blacknose dace (Rhinichthys atratulus) were sampled from stream reaches with or without salmon and analyzed for polychlorinated biphenyls (PCBs), polybrominated biphenyl ethers (PBDEs), and 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE). Pollutant levels were nearly 6x higher in salmon from Lake Michigan than from Lake Superior, and pollutant levels in stream-resident fish were positively correlated with salmon contamination. In Lake Michigan, stream fish were 10-100x more contaminated in salmon reaches than in non-salmon reaches, while stream fish from Lake Superior tributaries were 1.2-3.3x more contaminated in salmon reaches. Gut content analysis suggests that consumption of salmon material is the primary route of contaminant uptake. These data suggest that salmon runs bring a significant influx of contaminants to streams, but the magnitude of contamination varies considerably between lake basins. Management practices in Great Lakes tributaries, such as dam removal, have the potential to spread these contaminants to new stream reaches.

... the Muskegon Lake Area of Concern Prepared By Richard R. Rediske, Laurie Beth Nederveld, Ying... more ... the Muskegon Lake Area of Concern Prepared By Richard R. Rediske, Laurie Beth Nederveld, Ying Hong, and Kate Rieger ... The 1987 Remedial Action Plan listed five Beneficial Use Impairments (BUIs), including Degradation of Benthos (Wuycheck 1987). ...

A non-randomized assessment of long-term biosand filter (BSF) use and sustainability in the Artib... more A non-randomized assessment of long-term biosand filter (BSF) use and sustainability in the Artibonite Valley near Deschapelles, Haiti was conducted during March, 2011. Of the 55 BSFs visited, 47% were no longer in use. Filter lifespan ranged from <1 year to systems still in use after 12 years.

Journal of visualized experiments : JoVE, Jan 29, 2014

A technique for laboratory estimation of net trophic transfer efficiency (γ) of polychlorinated b... more A technique for laboratory estimation of net trophic transfer efficiency (γ) of polychlorinated biphenyl (PCB) congeners to piscivorous fish from their prey is described herein. During a 135-day laboratory experiment, we fed bloater (Coregonus hoyi) that had been caught in Lake Michigan to lake trout (Salvelinus namaycush) kept in eight laboratory tanks. Bloater is a natural prey for lake trout. In four of the tanks, a relatively high flow rate was used to ensure relatively high activity by the lake trout, whereas a low flow rate was used in the other four tanks, allowing for low lake trout activity. On a tank-by-tank basis, the amount of food eaten by the lake trout on each day of the experiment was recorded. Each lake trout was weighed at the start and end of the experiment. Four to nine lake trout from each of the eight tanks were sacrificed at the start of the experiment, and all 10 lake trout remaining in each of the tanks were euthanized at the end of the experiment. We determ...

Transactions of the American Fisheries Society, 2006

We evaluated the Wisconsin bioenergetics model for lake whitefish Coregonus clupeaformis in the l... more We evaluated the Wisconsin bioenergetics model for lake whitefish Coregonus clupeaformis in the laboratory and in the field. For the laboratory evaluation, lake whitefish were fed rainbow smelt Osmerus mordax in four laboratory tanks during a 133-d experiment. Based on a comparison of bioenergetics model predictions of lake whitefish food consumption and growth with observed consumption and growth, we concluded that the bioenergetics model furnished significantly biased estimates of both food consumption and growth. On average, the model overestimated consumption by 61% and underestimated growth by 16%. The source of the bias was probably an overestimation of the respiration rate. We therefore adjusted the respiration component of the bioenergetics model to obtain a good fit of the model to the observed consumption and growth in our laboratory tanks. Based on the adjusted model, predictions of food consumption over the 133-d period fell within 5% of observed consumption in three of the four tanks and within 9% of observed consumption in the remaining tank. We used polychlorinated biphenyls (PCBs) as a tracer to evaluate model performance in the field. Based on our laboratory experiment, the efficiency with which lake whitefish retained PCBs from their food (␥) was estimated at 0.45. We

Society & Natural Resources, 2007

ABSTRACT The Michigan Natural Rivers Act is a river protection statute that provides for zoning a... more ABSTRACT The Michigan Natural Rivers Act is a river protection statute that provides for zoning and land use controls up to 400 feet on either side of designated rivers. Since its enactment in 1970, there have been a number of opponents to each designation. Opposition includes concerns about perceived state intrusion into local government affairs, ineffectiveness of the designation in protecting the river and its watershed, and violations of personal property rights. The Michigan Department of Natural Resources Natural Rivers Program strives to address these concerns through extensive public and local involvement in the designation, implementation, and management of designated Natural Rivers. The degree of local participation has increased with subsequent designations. Nonetheless, the Michigan Department of Natural Resources must continue and increase its education and communication efforts with local governments and citizens along current Natural Rivers and during future designations to achieve effective cooperation in protecting Michigan's river resources.

Journal of Hydrologic Engineering, 2013

ABSTRACT Surface microtopography influences both spatial and temporal distributions of a series o... more ABSTRACT Surface microtopography influences both spatial and temporal distributions of a series of hydrologic processes including infiltration, surface runoff, and unsaturated flow. Importantly, surface roughness and depressions also affect the fate and transport of pollutants throughout surface and subsurface environments. The objective of this study was to experimentally investigate the effects of surface microtopography on overland flow, infiltration, and tracer bromide (Br) runoff, and leaching into the subsurface system under simulated rainfall. Both rough and smooth surfaces were created by using sieved soil and scanned by an instantaneous-profile laser scanner to acquire high-resolution digital elevation models (DEMs) of the soil surfaces. A mold surface, featuring a number of depressions of varied sizes and relationships, was used to create the rough soil surface. The Windows-based puddle delineation (PD) software was applied to characterize surface microtopography, determine flow directions and accumulations, and compute maximum depression storage (MDS) and maximum ponding area (MPA). Two overland flow and tracer transport experiments were conducted using the smooth and rough soil surfaces. Runoff water and soil samples were analyzed for Br. The experimental results indicated that the smooth surface seemed to have earlier and greater water and tracer runoff than the rough surface. Water discharge and tracer loading from the rough surface with varying depressions exhibited a unique, microtopography-controlled threshold behavior. It was found that spatial distributions of the tracer in the subsurface system matched the surface microtopographic features (e.g.,depressions, peaks/mounds, and ridges). Enhanced infiltration and tracer leaching under depressions of the rough surface were observed, which resulted in higher Br levels in deeper soil. In contrast, the dominant surface runoff and tracer transport along the horizontal direction for the smooth surface yielded higher Br concentrations in shallow soil. This preliminary study highlighted the important role of surface microtopography in tracer transport in a coupled overland and unsaturated flow system, and demonstrated that surface microtopography influenced the location and timing of ponding, runoff, and infiltration. Increased understanding of the effect of soil microtopography on hydrologic processes is expected to yield improved ability to simulate soil water and solute movement.

Journal of Great Lakes Research, 2011

We evaluated the temporal and spatial variability of cyanotoxins, water chemistry, and cyanobacte... more We evaluated the temporal and spatial variability of cyanotoxins, water chemistry, and cyanobacteria communities in two lakes of different trophic status. Bear Lake is a hypereutrophic system that flows into mesotrophic Muskegon Lake. Total microcystins (MC) in Bear Lake (mean, 1.66 μg/L) were composed of multiple structural analogs: 43% MC-LR, 50% MC-RR, and 7% MC-YR. Total microcystins in Muskegon Lake (mean, 0.52 μg/L) consisted of MC-LR (76%), MC-RR (14%), MC-YR (6%), and MC-LA (3%). The lakes were dominated by the cyanobacteria Microcystis spp., which accounted for 75% of phytoplankton biovolume in Bear Lake and N 90% in Muskegon Lake. Total microcystin concentration was positively correlated with cyanobacteria biovolume and turbidity (Muskegon Lake) and total phosphorus (Bear Lake), while negatively correlated with ammonia (Bear Lake) and nitrate (both lakes). The relationships between microcystins and environmental factors differed between lakes, despite hydrologic connectivity, suggesting that local conditions have a greater influence on toxin production than regional effects. Cylindrospermopsis raciborskii was found in both systems; however, the assemblage does not appear to be capable of producing cylindrospermopsin due to the absence of the PKS gene. Although the Bear Lake discharge appears to be the source of C. raciborskii, the physical/chemical properties of Muskegon Lake (lower turbidity and temperature, higher nitrate) may constrain the growth of this invasive species. Thus, local conditions in each lake are important in determining which species are capable of maintaining a viable population.

Journal of Great Lakes Research, 2008

A long-term monitoring program was initiated in 2003 to determine the ecological status of Muskeg... more A long-term monitoring program was initiated in 2003 to determine the ecological status of Muskegon Lake, a Great Lakes Area of Concern. This paper presents data generated from the first 3 years of the monitoring program, discusses how the data are being used to establish and justify lake restoration targets, and assesses how water quality conditions have changed over time. Between 1972 and, lake-wide averages of total phosphorus and soluble reactive phosphorus from the water surface have declined from 68 to 27 µg/L and from 20 to 5 µg/L, respectively. In addition, average chlorophyll a concentrations have declined from 25 to 6 µg/L over this period, while Secchi disk depths have increased from 1.5 to 2.2 m. Wastewater diversion, and perhaps dreissenid filtering activity, is most likely responsible for these changes. However, nitrate concentrations have increased from 70 to 270 µg/L over the same time period. During 2003During -2005, phytoplankton abundance and fish catch were lower in the spring compared to the summer and fall. Microcystis was the most abundant phytoplankton genus; the fish community generally was dominated by round goby (Neogobius melanostomus) in spring and summer, and sunfishes (Centrarchidae) in the fall. Dreissenid abundance was highly variable over time, but densities were low relative to Saginaw Bay. Approximately 65% of the Muskegon Lake shoreline has been hardened (i.e., physically altered). Overall, the water quality of Muskegon Lake has improved over the past 30 years, but environmental challenges still exist, including contaminated sediments, loss of natural habitat, and invasive species.

Journal of Great Lakes Research, 2006

Muskegon Lake was designated an Area of Concern because of severe environmental impairments from ... more Muskegon Lake was designated an Area of Concern because of severe environmental impairments from direct discharge of industrial and municipal wastes. Since diversion of all municipal and industrial wastewater in 1973, few studies have assessed ecological changes associated with improved water quality. We examined distributions and long-term changes in the benthic macroinvertebrate community at 27 sites. Distributions were evaluated relative to distance from the river mouth, water depth, grain size, and known areas of sediment contamination. Temporal changes were assessed relative to wastewater diversion. Oligochaeta and Chironomidae dominated the community, and the oligochaete trophic condition index indicated that, in 1999, the lake was generally mesotrophic to eutrophic. Cluster analysis resulted in four distinct site groupings. A cluster of sites near the river mouth had the highest total density (9,375 m -2 ) and lowest diversity (Shannon Weaver Index 1.05) suggesting an enriched habitat. A site cluster in the south central region had the lowest oligochaete density (2,782 m -2 ), lowest oligochaete trophic condition index scores (1.00), and highest diversity (2.24), suggesting the best habitat. The chironomid community in this site cluster was dominated by predatory species, possibly resulting from high concentrations of heavy metals at some sites. Densities of all major taxonomic groups increased significantly between 1972 and 1999. Decreasing proportions of oligochaetes (0.85 to 0.68) and increasing diversity suggest improved environmental conditions over this period. Evidence suggests that changes in Muskegon Lake's benthic community were more a result of wastewater diversion than Dreissena invasion.

Journal of Great Lakes Research, 2009

Eleven male walleyes (Sander vitreus) and 10 female walleyes from the Saginaw Bay (Lake Huron) po... more Eleven male walleyes (Sander vitreus) and 10 female walleyes from the Saginaw Bay (Lake Huron) population were caught during the spawning run at Dow Dam (Midland, Michigan) in the Tittabawassee River during April 1996, and individual whole-fish polychlorinated biphenyl (PCB) determinations were made. Total PCB concentrations averaged 7.95 and 3.17 mg/kg for males and females, respectively. As part of the Natural Resource Damage Assessment remediation process, contaminated sediments from the Saginaw River, the main tributary to Saginaw Bay, were removed during 2000 and 2001. Total PCB concentrations of 10 male and 10 female walleyes caught at Dow Dam during April 2007 averaged 1.58 and 0.55 mg/kg, respectively. Thus, dredging of the Saginaw River appeared to be effective in reducing PCB concentrations of Saginaw Bay adult walleyes, as both males and females decreased in PCB concentration by more than 80% between 1996 and 2007. However, the ratio of male PCB concentration to female PCB concentration did not decline between 1996 and 2007. This persistent gender difference in PCB concentrations was apparently due to a gender difference in habitat utilization coupled with a persistent spatial gradient in prey fish PCB concentrations from the Saginaw River to Lake Huron.

Journal of Great Lakes Research, 2012

Keywords: Area of concern BDE-28 BDE-47 Congener profiles Hot spot effect Watershed sources of PB... more Keywords: Area of concern BDE-28 BDE-47 Congener profiles Hot spot effect Watershed sources of PBDEs Polybrominated diphenyl ether (PBDE) concentrations were determined for mature male and mature female walleyes (Sander vitreus) sampled from the Saginaw Bay population during 2007. PBDE concentrations in prey fish caught in the Saginaw River, the primary tributary to Saginaw Bay, and in Saginaw Bay during 2005 and 2007 also were determined. Mature male and mature female walleyes averaged 70.3 ng/g and 24.8 ng/g, respectively, in ΣPBDE, which was equal to the sum of concentrations of six PBDE congeners (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, and BDE-154). This sex difference was likely due to males spending more time in the Saginaw River system than females. Prey fish captured in the Saginaw River were roughly ten times higher in ΣPBDE than those caught in Saginaw Bay. BDE-47 was the predominant congener in both walleyes and prey fish, and this congener contributed about 50%, on average, to ΣPBDE. Congener profiles differed significantly between the two sexes of walleyes. In contrast, congener profiles of the prey fish did not differ significantly between the river-caught fish and the bay-caught fish. One plausible explanation for these congener profile results was that net trophic transfer efficiencies of PBDEs to walleyes from their prey were similar for all congeners except BDE-28, and that diet composition differed between the two sexes of walleyes.