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What is No Observation Effect Concentration (NOEC)

Chapter 2
Handbook of Research on the Adverse Effects of Pesticide Pollution in Aquatic Ecosystems
In toxicology, it is specifically the highest tested dose or concentration of a chemical, at which no such adverse effect is found in exposed test organisms where higher doses or concentrations resulted in an adverse effect.
Published in Chapter:
Pesticide Sources, Their Fate, and Different Ways to Impact Aquatic Organisms
Samreen Siddiqui (Oregon State University, USA)
Copyright: © 2019 |Pages: 21
DOI: 10.4018/978-1-5225-6111-8.ch002
Abstract
Since the industrial revolution, several new chemicals were discovered and introduced in society, and soon after the green revolution, pesticides were also introduced to strengthen food security. However, limited education on their application, handling, and usage resulted in them making their way into the aquatic ecosystem. This chapter defines the different sources of pesticides, based on their point of origin and the way it transports pesticides to the aquatic systems. After this, the pesticide interaction in an aquatic environment with various organic and inorganic substances is described. Each interaction is supported with the recent researches and examples. Following pesticides sources and interactions, its fate in the aquatic system has been defined through various physical and chemical processes. Ultimately, its impact on aquatic organisms is discussed. This chapter is concluded with recommended management practices and future research directions. Some terms are also defined at the end of this chapter.
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