Responses of wetland plants to effluents in water and sediment
Responses of two wetland vascular plants, Echinochloa crusgalli and Sesbania macrocarpa, exposed to effluents from a coke plant, a pulp mill, a wastewater treatment plant, and the herbicide, hexazinone, were measured in three types of tests: seed germination and early growth, seedling survival and growth in hydroponic culture, and seedling survival and growth in sand and synthetic sediments with clay, silt, and sand, 3, 5, 7.5, or 10% organic contents. There was no effect of effluents or herbicide on germination and survival was affected only by the herbicide. When compared to controls, growth rates were reduced significantly in all tests except for E. crusgalli exposed to effluent from a wastewater treatment plant. There, the effluent stimulated growth in sediments. Increasing concentrations of organic matter in sediments had little effect on toxicity of effluents, but did cause reduced effects of hexazinone.
- Research Organization:
- Environmental Protection Agency, Gulf Breeze, FL (United States). Environmental Research Lab.
- OSTI ID:
- 5910770
- Report Number(s):
- PB-92-129758/XAB
- Resource Relation:
- Other Information: Pub. in Environmental and Experimental Botany, v31 n3 p351-358 1991. See also PB91-200337
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHEMICAL EFFLUENTS
TOXICITY
PLANTS
SENSITIVITY
SEDIMENTS
CONTAMINATION
AQUATIC ORGANISMS
COKING PLANTS
GERMINATION
HERBICIDES
INDUSTRIAL WASTES
ORGANIC MATTER
PAPER INDUSTRY
PLANT GROWTH
SEEDS
WASTE PROCESSING PLANTS
WATER POLLUTION
WETLANDS
AQUATIC ECOSYSTEMS
CHEMICAL WASTES
ECOSYSTEMS
GROWTH
INDUSTRIAL PLANTS
INDUSTRY
MATTER
NONRADIOACTIVE WASTES
PESTICIDES
POLLUTION
WASTES
WOOD PRODUCTS INDUSTRY
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology