RNR 1001 Chapter : RNR 1001 2
Document Summary
Pollutants can be solid, liquid, or gaseous and are found everywhere on the planet. Agricultural runoff is also a significant source of nutrients, which can lead to the process of cultural eutrophication in streams and lakes. Water bodies can be classified based on their trophic state: p, chlorophyll a, secchi depth. Oligotrophic low nutrient levels, low primary, secondary productivity. Some species (cyanobacteria) produce cyanotoxins, such as anatoxin and microcystin, can dominate when nitrogen is limiting. Harmful to many vertebrates, including fish and humans. Another problem related to agricultural practices that has arisen in recent decades is the dead zone in the gulf of mexico (and in other costal areas) Protection of soil, minimization of fertilizer, pesticides, and herbicide runoff. A third agriculturally-related water quality problem is irrigation. Removal of water from streams and aquifers to provide water for crops in arid areas.
