What are persistent pesticides characterized by?

Persistent pesticides are characterized by their resistance to degradation, meaning they do not break down readily into harmless chemicals. This persistence can result in long-term environmental impacts, as these chemicals can remain in the soil, water, and organisms for extended periods. The longevity of persistent pesticides raises concerns regarding bioaccumulation in food chains and potential harm to non-target species, including humans.

The nature of these pesticides also contrasts sharply with those that break down quickly; such rapidly degrading pesticides are typically less of an environmental concern. While some persistent pesticides have been banned or restricted due to their harmful effects, not all persistent pesticides are prohibited in agricultural use. Additionally, persistent pesticides are not exclusive to aquaculture, as they can be used in various agricultural settings. This underscores the importance of understanding the characteristics and impacts of persistent pesticides within environmental science.