
Native Species
A naturally occurring plant or other organism that is within its range and normal environment.
Nitrate
A salt of nitric acid; a common water pollutant.
Nonpoint Source
Nutrient and pollution sources not discharged from a single point, e.g. runoff from agricultural fields, feedlots, residential lawns, septic leach fields, or urban streets, etc.
NPS
Nonpoint source
NRCS
USDA Natural Resources Conservation Service
NSERL
National Soil Erosion Research Laboratory (West Lafayette, Indiana)
Nutrient
Elements or compounds essential to growth and development of living things (e.g., nitrogen, potassium, phosphorus).