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Advances in Agronomy
Advances in Agronomy
Microbial Aspects of Pollution
Microbial Aspects of Pollution is the first of a new series that emerged from the annual Summer Conference of Society for Applied Bacteriology, focusing on microbiological subjects of general topical interest. The subject of the 1971 symposium ""Microbial Aspects of Pollution"" is particularly topical. Pollution is an environmental problem and almost invariably arises from the activities of man. Micro-organisms have their part to play, both advantageously and disadvantageously, and the 16 contributions, written by recognized experts in the field, range widely over the subject. They include considerations of the health hazards of pollution, embracing the consequences of sewage pollution of ou...
Biodegradation of Pesticides
When first developed, chlorinated pesticides such as DDT, dieldrin, and mirex were received with open arms, quickly becoming popular as effective, economic agents against pests. But evidence began to mount that residues of these chemicals remained in the environment, not breaking down, often appearing in plants and animals. By the late seventies many pesticides had achieved a terrible notoriety and were subsequently banned in a number of countries. Of tremendous concern, then, is the persistence of pesticides in the environment. The major thrust of research and development in the area of pesticides has properly been the creation of substances that are both effective and degradable. Yet in or...
Woodcock Status Report, 1965
Singing-ground surveys of the American woodcock indicate that breeding populations have increased gradually over the past 7 years while production, as indicated by wing-collection surveys, has remained relatively stable. The woodcock harvest, meanwhile, has probably more than doubled during the past decade. This suggests that while woodcock are probably becoming more important to North American sportsmen, hunting mortality is still relatively unimportant.
Environmental Pollution by Pesticides
The persistent organic pesticides have saved millions of lives by controlling human disease vectors and by greatly increasing the yields of agricultural crops. However, in recent years man has become ever more conscious of the way in which his environment is becoming increasingly polluted by chemicals that may harm plants, animals or even himself. Amongst these chemicals the organochlorine insecticides have been well to the fore as a major cause of anxiety to ecologists, not only because they persist so long, but also because of the readiness with which they are taken up into the bodies of living organisms, especially the fatty tissues of both animals and humans. The extent and seriousness of the potential hazards due to these chemicals still remains to be fully defined. Our information on the occur rence of residues in the various parts of the environment is very uneven and localized. For instance, whereas we have a great deal of data on residues in North America, we know virtually nothing about the extent of pesticide contamination in Africa, South America and much of Asia, although large amounts of organochlorine insecticides have been used in these areas.
