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Effects of a Polluted Environment Research and Development Needs (1977) / Chapter Skim
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EFFECTS ON AGRICULTURAL AND FOREST PLANTS
Pages 74-80

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From page 74...
... In particular, research on effects en algae deserves high priority, both because of the important ecological role played by algae and because of the dearth of information about algal responses tc most toxic pollutants. A great deal of research has been conducted on the acute effects on a variety of agricultural and forest plants of some air pollutants (chiefly sulfur dioxide, ozone, and fluoride)
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From page 75...
... To avoid unnecessary duplication cf effort, sponsors of research should encourage timely reporting of research results, Eefcre relationships between environmental contaminants and vegetation damage in agricultural and forested areas can be determined, the concentrations and trends over time for important pollutants in those areas mist be measured. The environment in or near urban and industrial locations has been extensively monitored, but there has been no coordinated effort to provide a continuous record of pollutant levels in agricultural and forested portions of the country.
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From page 76...
... Laboratory research would best be accomplished in those government agencies, ncnprcfit research institutes, and agricultural experiment stations that have the necessary facilities and experience to conduct complex chamber studies. Funds should be provided by EPA, OSDA and the Forest Service (USFS)
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From page 77...
... The soundest assessment of the actual risks pollution represents to crops, forests, and ether plant communities is one based on mutually confirming results of indoor and field studies. Some promising techniques have been developed fcr making quantitative measurements cf the effects of air pollutants on crop productivity.
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From page 78...
... A better understanding of the physiological mechanisms cf toxicity could make it possible to detect injury at a time when corrective action might still be possible. Research of this kind should also advance understanding in such problem areas as breeding pollution-resistant varieties of plants, assessing the effects of interactions among multiple toxic agents and other stresses, anticipating the impacts of new pollutants, extrapolating estimates of injury from one species of plant to others that metabolize a contaminant in the same way, and determining the utility of the threshold concept for damage to vegetaticn.
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From page 79...
... (1975) Design of a digitally controlled environmental chamber for air pollution effects studies on plants.
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From page 80...
... Photochemical air pollution: Formation, transport and effects. Ottawa, Canada.
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Key Terms

  • plant communities
  • air pollutants
  • field studies
  • reduced growth
  • vegetation damage

  • pollution control
  • sulfur dioxide
  • research institutes
  • control association
  • soil nutrients

  • monitor peroxyacetyl
  • unnecessary duplication
  • increased acidity
  • actual stress
  • soundest assessment

  • major contributions
  • firming results
  • algae deserves
  • agricultural crops
  • physiological mechanisms

  • aquatic plants
  • enforce nondegradation
  • chronic effects
  • revising secondary
  • promising techniques

  • particular cause
  • provide models
  • physiological states
  • soil pollutants
  • visibly damaged


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