Vulnerability of recently recharged groundwater in principal [corrected] aquifers of the United States to nitrate contamination

Environmental Science & Technology
Jason J Gurdak, Sharon L Qi

Abstract

Recently recharged water (defined here as <60 years old) is generally the most vulnerable part of a groundwater resource to nonpoint-source nitrate contamination. Understanding at the appropriate scale the interactions of natural and anthropogenic controlling factors that influence nitrate occurrence in recently recharged groundwater is critical to support best management and policy decisions that are often made at the aquifer to subaquifer scale. New logistic regression models were developed using data from the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program and National Water Information System for 17 principal aquifers of the U.S. to identify important source, transport, and attenuation factors that control nonpoint source nitrate concentrations greater than relative background levels in recently recharged groundwater and were used to predict the probability of detecting elevated nitrate in areas beyond the sampling network. Results indicate that dissolved oxygen, crops and irrigated cropland, fertilizer application, seasonally high water table, and soil properties that affect infiltration and denitrification are among the most important factors in predicting elevated nitrate concentrations. Import...Continue Reading

References

Sep 1, 1996·Epidemiology·M H WardS H Zahm
Jun 1, 2002·Environmental Science & Technology·Bernard T NolanBarbara C Ruddy
Oct 9, 2004·Environmental Health Perspectives·Lorna Fewtrell
Jan 30, 2007·Environmental Science & Technology·Bernard T Nolan, Kerie J Hitt
May 2, 2007·Ground Water·Jason J GurdakSharon L Qi
Mar 1, 2008·Ground Water·P B McMahon, F H Chapelle
May 6, 2008·Journal of Environmental Quality·Christopher T GreenHenry M Johnson
Jun 15, 2010·Environmental Science & Technology·Karen R BurowNeil M Dubrovsky

❮ Previous
Next ❯

Citations

May 2, 2014·Environmental Science & Technology·Bernard T NolanKen Belitz
Aug 2, 2015·The Science of the Total Environment·David C WheelerMary H Ward
Aug 1, 2015·Environmental Science & Technology·Anthony J TesorieroDaniel B Abrams
Aug 26, 2014·Environmental Science & Technology·Kyle P MessierMarc L Serre
Dec 13, 2017·Environmental Science and Pollution Research International·Issoufou OuedraogoMarnik Vanclooster
Dec 22, 2017·Environmental Science and Pollution Research International·Fuming LiuWan-Huan Zhou
Jul 4, 2018·Ground Water·Kenneth BelitzJennifer Sharpe
Nov 27, 2018·The Science of the Total Environment·Kyle P MessierMary H Ward

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2021 Meta ULC. All rights reserved