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This paper presents the analysis of ambient air concentrations of 10 carbonyl compounds (aldehydes and ketones) measured in the yards of 87 residences in the city of Elizabeth, NJ, throughout 1999-2001. Most of these residences were measured twice in different seasons; the sampling duration was 48 hr each time. The authors observed higher concentrations for(More)
The significance of interspecific interactions as a structuring force in the enteric helminth communities of 4 species of grebes (Aechmophorus occidentalis, Podiceps grisegena, P. nigricollis, and P. auritus) was evaluated. Patterns of microhabitat distribution revealed that helminths resided in predictable locations along the length of the small intestine.(More)
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