Impact of Chemically Contaminated Sewage Sludge on the Collard Arthropod Community
| Autor: | David Pimentel, Thomas W. Culliney, Donald J. Lisk |
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| Rok vydání: | 1986 |
| Předmět: | |
| Zdroj: | Environmental Entomology. 15:826-833 |
| ISSN: | 1938-2936 0046-225X |
| DOI: | 10.1093/ee/15.4.826 |
| Popis: | Stress effects on a terrestrial arthropod community were evident in a study of collards grown in soil amended with chemically contaminated sewage sludge. Plant growth in the contaminated sludge was significantly reduced compared with growth in plots treated with relatively uncontaminated sludge from two small towns or with manure alone. Population densities of major arthropod taxa tended to be lower in plots of contaminated sludge than they were in uncontaminated sludge and manure plots. Species richness and diversity were also reduced in contaminated-sludge plots compared with those of uncontaminated sludge and manure treatments. In general, few differences were observed in plant growth and arthropod numbers between the uncontaminated-sludge treatment, or uncontaminated sludge treated with cadmium or with the insecticide dieldrin. Because cadmium and dieldrin were applied at dosages of cadmium and polychlorinated biphenyls (PCB's) found in the contaminated sludge, results suggested that these two toxins were not responsible for the effects on plants and arthropods observed in the contaminated-sludge treatment. Results of this study indicated the potential for sludge-borne contaminants to suppress growth in crop plants and reduce abundance of their associated arthropods. |
| Databáze: | OpenAIRE |
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