Variable nitrate concentration–discharge relationships in a forested watershed

Jonathan Duncan, Lawrence E. Band, Peter M. Groffman

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The relationship between solute concentrations and discharge can inform an integrated understanding of hydrological and biogeochemical processes at watershed scales. Recent work from multiple catchments has shown that there is typically little variation in concentration relative to large variations in discharge. This pattern has been described as chemostatic behavior. Pond Branch, a forested headwater catchment in Maryland, has been monitored for stream nitrate (NO3 ) concentrations at weekly intervals for 14 years. In the growing season and autumn of 2011 a high-frequency optical NO3 sensor was used to supplement the long-term weekly data. In this watershed, long-term weekly data show that NO3 concentrations decrease with increasing discharge whereas 6 months of 15-minute sensor observed concentrations reveal a more chemostatic behavior. High-frequency NO3 concentrations from the sensor collected during different storm events reveal variable concentration–discharge patterns highlighting the importance of high resolution data and ecohydrological drivers in controlling solute export for biologically reactive solutes such as NO3 .

Original languageEnglish (US)
Pages (from-to)1817-1824
Number of pages8
JournalHydrological Processes
Volume31
Issue number9
DOIs
StatePublished - Apr 30 2017

Fingerprint

solute
watershed
nitrate
sensor
catchment
headwater
growing season
pond
autumn

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cite this

Duncan, Jonathan ; Band, Lawrence E. ; Groffman, Peter M. / Variable nitrate concentration–discharge relationships in a forested watershed. In: Hydrological Processes. 2017 ; Vol. 31, No. 9. pp. 1817-1824.
@article{e90bc06b797f4e0c9c9ead1e1eaa0342,
title = "Variable nitrate concentration–discharge relationships in a forested watershed",
abstract = "The relationship between solute concentrations and discharge can inform an integrated understanding of hydrological and biogeochemical processes at watershed scales. Recent work from multiple catchments has shown that there is typically little variation in concentration relative to large variations in discharge. This pattern has been described as chemostatic behavior. Pond Branch, a forested headwater catchment in Maryland, has been monitored for stream nitrate (NO3 −) concentrations at weekly intervals for 14 years. In the growing season and autumn of 2011 a high-frequency optical NO3 − sensor was used to supplement the long-term weekly data. In this watershed, long-term weekly data show that NO3 − concentrations decrease with increasing discharge whereas 6 months of 15-minute sensor observed concentrations reveal a more chemostatic behavior. High-frequency NO3 − concentrations from the sensor collected during different storm events reveal variable concentration–discharge patterns highlighting the importance of high resolution data and ecohydrological drivers in controlling solute export for biologically reactive solutes such as NO3 −.",
author = "Jonathan Duncan and Band, {Lawrence E.} and Groffman, {Peter M.}",
year = "2017",
month = "4",
day = "30",
doi = "10.1002/hyp.11136",
language = "English (US)",
volume = "31",
pages = "1817--1824",
journal = "Hydrological Processes",
issn = "0885-6087",
publisher = "John Wiley and Sons Ltd",
number = "9",

}

Variable nitrate concentration–discharge relationships in a forested watershed. / Duncan, Jonathan; Band, Lawrence E.; Groffman, Peter M.

In: Hydrological Processes, Vol. 31, No. 9, 30.04.2017, p. 1817-1824.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Variable nitrate concentration–discharge relationships in a forested watershed

AU - Duncan, Jonathan

AU - Band, Lawrence E.

AU - Groffman, Peter M.

PY - 2017/4/30

Y1 - 2017/4/30

N2 - The relationship between solute concentrations and discharge can inform an integrated understanding of hydrological and biogeochemical processes at watershed scales. Recent work from multiple catchments has shown that there is typically little variation in concentration relative to large variations in discharge. This pattern has been described as chemostatic behavior. Pond Branch, a forested headwater catchment in Maryland, has been monitored for stream nitrate (NO3 −) concentrations at weekly intervals for 14 years. In the growing season and autumn of 2011 a high-frequency optical NO3 − sensor was used to supplement the long-term weekly data. In this watershed, long-term weekly data show that NO3 − concentrations decrease with increasing discharge whereas 6 months of 15-minute sensor observed concentrations reveal a more chemostatic behavior. High-frequency NO3 − concentrations from the sensor collected during different storm events reveal variable concentration–discharge patterns highlighting the importance of high resolution data and ecohydrological drivers in controlling solute export for biologically reactive solutes such as NO3 −.

AB - The relationship between solute concentrations and discharge can inform an integrated understanding of hydrological and biogeochemical processes at watershed scales. Recent work from multiple catchments has shown that there is typically little variation in concentration relative to large variations in discharge. This pattern has been described as chemostatic behavior. Pond Branch, a forested headwater catchment in Maryland, has been monitored for stream nitrate (NO3 −) concentrations at weekly intervals for 14 years. In the growing season and autumn of 2011 a high-frequency optical NO3 − sensor was used to supplement the long-term weekly data. In this watershed, long-term weekly data show that NO3 − concentrations decrease with increasing discharge whereas 6 months of 15-minute sensor observed concentrations reveal a more chemostatic behavior. High-frequency NO3 − concentrations from the sensor collected during different storm events reveal variable concentration–discharge patterns highlighting the importance of high resolution data and ecohydrological drivers in controlling solute export for biologically reactive solutes such as NO3 −.

UR - http://www.scopus.com/inward/record.url?scp=85015311774&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85015311774&partnerID=8YFLogxK

U2 - 10.1002/hyp.11136

DO - 10.1002/hyp.11136

M3 - Article

AN - SCOPUS:85015311774

VL - 31

SP - 1817

EP - 1824

JO - Hydrological Processes

JF - Hydrological Processes

SN - 0885-6087

IS - 9

ER -