CIRS Blog about Rural California

Toby O’Geen

Toby O’Geen

Soil Resource Specialist in Cooperative Extension


Dept. of Land, Air and Water Resources


University of California, Davis

Introduction

 

Non-point source pollution (NPS) is a global problem affecting the safety of our drinking water supply and aquatic habitats. According to the 2000 National Water Quality Inventory, agriculturally derived NPS is the leading cause of water quality degradation in surface waters. Pollutants originating from agricultural runoff include sediment, nutrients (N and P), pesticides, pathogens, salts, trace elements, dissolved organic carbon and substances that contribute to biological oxygen demand (BOD). 

 

For example, discharge of nutrients into aquatic ecosystems has led to the formation of hypoxia/anoxia induced “dead zones” in more than 400 locations worldwide. Thus, new and effective management practices for agriculture must be identified, tested and monitored in order to reduce the impacts of agriculture on the sustainability of water resources.

 

Wetlands are widely advertised as critical components of our planet providing a wide variety of ecosystem services: kidneys of the hydrologic cycle by removing pollutants, biodiversity hot spots, habitats of rare and endangered species, ground water recharge zones, localized areas for flood protection, carbon sinks and aesthetic value.

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