NDLI: Chemical amplification in an invaded food web: seasonality and ontogeny in a high-biomass, low-diversity ecosystem.

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Chemical amplification in an invaded food web: seasonality and ontogeny in a high-biomass, low-diversity ecosystem.

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Chemical amplification in an invaded food web: seasonality and ontogeny in a high-biomass, low-diversity ecosystem.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Ng, Carla A. Berg, Martin B. Jude, David J. Janssen, John Charlebois, Patrice M. Amaral, Luis A. N. Gray, Kimberly A.
Spatial Coverage	Illinois
Description	Country affiliation: United States Author Affiliation: Ng CA ( Department of Chemical and Biological Engineering, Northwestern University, 2145 North Sheridan Road, Evanston, Illinois 60208, USA.)
Abstract	The global spread of invasive species is changing the structure of aquatic food webs worldwide. The North American Great Lakes have proved particularly vulnerable to this threat. In nearshore areas, invasive benthic species such as dreissenid mussels and round gobies (Neogobius melanostomus) have gained dominance in recent years. Such species are driving the flow of energy and material from the water column to the benthic zone, with dramatic effect on nutrient and contaminant cycling. Here, we develop a stage-structured model of a benthified food web in Lake Michigan with seasonal resolution and show how its bioaccumulation patterns differ from expected ones. Our model suggests that contaminant recycling through the consumption of lipid-rich fish eggs and mussel detritus is responsible for these differences. In southern Lake Michigan's Calumet Harbor (Chicago, IL, USA), round gobies have nitrogen isotope signatures with considerable spread, with some values higher than their predators and others lower than their prey. Contrary to patterns observed in linear pelagic systems, we predict that polychlorinated biphenyl (PCB) concentrations in these fish decrease with increasing size due to the lipid- and benthos-enriched diets of smaller fish. We also present here round goby PCB concentrations measured in 2005 after an invasional succession in Calumet Harbor and demonstrate how the change from one invasive mussel species to another may have led to a decrease in round goby PCB accumulation. Our results suggest that benthic-dominated systems differ from pelagic ones chiefly due to the influence of detritus and that these effects are exacerbated in systems with low species diversity and high biomass.
File Format	HTM / HTML
ISSN	07307268
Issue Number	10
Volume Number	27
e-ISSN	15528618
Journal	Environmental Toxicology and Chemistry
Language	English
Publisher	Wiley
Publisher Date	2008-10-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Water Pollutants, Chemical Toxicity Discipline Environmental Health Discipline Toxicology Polychlorinated Biphenyls Biomass Biodiversity Journal Article Food Chain Animals Bivalvia Ecosystem Fishes Illinois Analysis Discipline Chemistry Physiology Seasons
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis

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Uncertainty analysis of dioxin-like polychlorinated biphenyls-related toxic equivalents in fish.

Effects-based marine ecological risk assessment at a polychlorinated biphenyl-contaminated site in Saglek, Labrador, Canada.

PCB-induced changes of a benthic community and expected ecosystem recovery following in situ sorbent amendment.

Seasonality in contaminant accumulation in Arctic marine pelagic food webs using trophic magnification factor as a measure of bioaccumulation.

Seasonal variation in accumulation of persistent organic pollutants in an Arctic marine benthic food web.

Polybrominated diphenyl ethers and polychlorinated biphenyls in freshwater fish from Taihu Lake, China: their levels and the factors that influence biomagnification.

Fate of polychlorinated biphenyls in a contaminated lake ecosystem: combining equilibrium passive sampling of sediment and water with total concentration measurements of biota.

Net trophic transfer efficiencies of polychlorinated biphenyl congeners to lake trout (Salvelinus namaycush) from its prey.

Biomagnification of polychlorinated biphenyls in a harbor seal (Phoca vitulina) food web from the Strait of Georgia, British Columbia, Canada.

Chemical amplification in an invaded food web: seasonality and ontogeny in a high-biomass, low-diversity ecosystem.

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PCB-induced changes of a benthic community and expected ecosystem recovery following in situ sorbent amendment.

Seasonality in contaminant accumulation in Arctic marine pelagic food webs using trophic magnification factor as a measure of bioaccumulation.

Seasonal variation in accumulation of persistent organic pollutants in an Arctic marine benthic food web.

Polybrominated diphenyl ethers and polychlorinated biphenyls in freshwater fish from Taihu Lake, China: their levels and the factors that influence biomagnification.

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Net trophic transfer efficiencies of polychlorinated biphenyl congeners to lake trout (Salvelinus namaycush) from its prey.

Biomagnification of polychlorinated biphenyls in a harbor seal (Phoca vitulina) food web from the Strait of Georgia, British Columbia, Canada.

Chemical amplification in an invaded food web: seasonality and ontogeny in a high-biomass, low-diversity ecosystem.