PMID: 16639904Apr 28, 2006Paper

Incremental ecological exposure risks from contaminated sediments in an urban estuarine river

Integrated Environmental Assessment and Management
David F Ludwig, Timothy Iannuzzi

Abstract

Estuaries in urban regions present unique environmental management challenges. Ecosystems in urban estuaries are typically impacted by habitat loss and degradation, watershed modification, and nonpoint and point sources of many chemicals. Restoring such systems requires an understanding of the relative contribution of various stressors to overall ecological conditions and an understanding of shifting patterns of stress over time. In this article, we present the results of a multiparameter environmental assessment of a quintessential urbanized waterway: the lower Passaic River in the vicinity of Newark, New Jersey, USA. To provide the foundation for effective management decision making, we quantified baseline conditions (habitat losses and degradation), chemical concentrations in sediment and biota relative to published toxic effect levels, direct toxicity of sediments to benthic organisms, and food-web mediated risks to fish-eating birds. Habitat losses have been severe (greater than 85% of wetlands, nearly 100% of the total length of tidal and nontidal tributaries, and 100% of natural shoreline habitat have been lost), resulting in substantial habitat constraints on biota. Despite this, biological communities are present in th...Continue Reading

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Citations

Jun 26, 2007·Environmental Monitoring and Assessment·Timothy J IannuzziDavid F Ludwig
Oct 23, 2008·Environmental Science and Pollution Research International·Matti VertaTerttu Vartiainen
Mar 17, 2007·Journal of Toxicology and Environmental Health. Part a·Jason C KinnellMiranda Freeman
Feb 9, 2010·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Kiyun ParkInn-Sil Kwak
Apr 28, 2009·The Science of the Total Environment·J D UrbanM A Harris
Oct 12, 2010·Environmental Toxicology and Chemistry·G Allen Burton, Emma L Johnston

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