Phosphorus legacy: Overcoming the effects of past management practices to mitigate future water quality impairment

Andrew Sharpley, Helen P. Jarvie, Anthony Buda, Linda May, Bryan Spears, Peter Kleinman

Research output: Contribution to journalArticle

335 Citations (Scopus)

Abstract

The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the legacies of past management activities, where sinks and stores of P along the land- freshwater continuum mask the effects of reductions in edge-of-field losses of P. Accounting for legacy P along this continuum is important to correctly apportion sources and to develop successful watershed remediation. In this study, we examined the drivers of legacy P at the watershed scale, specifically in relation to the physical cascades and biogeochemical spirals of P along the continuum from soils to rivers and lakes and via surface and subsurface flow pathways. Terrestrial P legacies encompass prior nutrient and land management activities that have built up soil P to levels that exceed crop requirements and modified the connectivity between terrestrial P sources and fluvial transport. River and lake P legacies encompass a range of processes that control retention and remobilization of P, and these are linked to water and sediment residence times. We provide case studies that highlight the major processes and varying timescales across which legacy P continues to contribute P to receiving waters and undermine restoration efforts, and we discuss how these P legacies could be managed in future conservation programs.

Original languageEnglish (US)
Pages (from-to)1308-1326
Number of pages19
JournalJournal of Environmental Quality
Volume42
Issue number5
DOIs
StatePublished - Oct 8 2013

Fingerprint

Watersheds
Water quality
Phosphorus
management practice
watershed
phosphorus
water quality
Nutrients
Lakes
Conservation
Rivers
Soils
nutrient
lake
remobilization
subsurface flow
Remediation
river
land management
Restoration

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Management, Monitoring, Policy and Law

Cite this

Sharpley, Andrew ; Jarvie, Helen P. ; Buda, Anthony ; May, Linda ; Spears, Bryan ; Kleinman, Peter. / Phosphorus legacy : Overcoming the effects of past management practices to mitigate future water quality impairment. In: Journal of Environmental Quality. 2013 ; Vol. 42, No. 5. pp. 1308-1326.
@article{f2ab74a832654556970387e213e838e9,
title = "Phosphorus legacy: Overcoming the effects of past management practices to mitigate future water quality impairment",
abstract = "The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the legacies of past management activities, where sinks and stores of P along the land- freshwater continuum mask the effects of reductions in edge-of-field losses of P. Accounting for legacy P along this continuum is important to correctly apportion sources and to develop successful watershed remediation. In this study, we examined the drivers of legacy P at the watershed scale, specifically in relation to the physical cascades and biogeochemical spirals of P along the continuum from soils to rivers and lakes and via surface and subsurface flow pathways. Terrestrial P legacies encompass prior nutrient and land management activities that have built up soil P to levels that exceed crop requirements and modified the connectivity between terrestrial P sources and fluvial transport. River and lake P legacies encompass a range of processes that control retention and remobilization of P, and these are linked to water and sediment residence times. We provide case studies that highlight the major processes and varying timescales across which legacy P continues to contribute P to receiving waters and undermine restoration efforts, and we discuss how these P legacies could be managed in future conservation programs.",
author = "Andrew Sharpley and Jarvie, {Helen P.} and Anthony Buda and Linda May and Bryan Spears and Peter Kleinman",
year = "2013",
month = "10",
day = "8",
doi = "10.2134/jeq2013.03.0098",
language = "English (US)",
volume = "42",
pages = "1308--1326",
journal = "Journal of Environmental Quality",
issn = "0047-2425",
publisher = "ASA/CSSA/SSSA",
number = "5",

}

Phosphorus legacy : Overcoming the effects of past management practices to mitigate future water quality impairment. / Sharpley, Andrew; Jarvie, Helen P.; Buda, Anthony; May, Linda; Spears, Bryan; Kleinman, Peter.

In: Journal of Environmental Quality, Vol. 42, No. 5, 08.10.2013, p. 1308-1326.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Phosphorus legacy

T2 - Overcoming the effects of past management practices to mitigate future water quality impairment

AU - Sharpley, Andrew

AU - Jarvie, Helen P.

AU - Buda, Anthony

AU - May, Linda

AU - Spears, Bryan

AU - Kleinman, Peter

PY - 2013/10/8

Y1 - 2013/10/8

N2 - The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the legacies of past management activities, where sinks and stores of P along the land- freshwater continuum mask the effects of reductions in edge-of-field losses of P. Accounting for legacy P along this continuum is important to correctly apportion sources and to develop successful watershed remediation. In this study, we examined the drivers of legacy P at the watershed scale, specifically in relation to the physical cascades and biogeochemical spirals of P along the continuum from soils to rivers and lakes and via surface and subsurface flow pathways. Terrestrial P legacies encompass prior nutrient and land management activities that have built up soil P to levels that exceed crop requirements and modified the connectivity between terrestrial P sources and fluvial transport. River and lake P legacies encompass a range of processes that control retention and remobilization of P, and these are linked to water and sediment residence times. We provide case studies that highlight the major processes and varying timescales across which legacy P continues to contribute P to receiving waters and undermine restoration efforts, and we discuss how these P legacies could be managed in future conservation programs.

AB - The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the legacies of past management activities, where sinks and stores of P along the land- freshwater continuum mask the effects of reductions in edge-of-field losses of P. Accounting for legacy P along this continuum is important to correctly apportion sources and to develop successful watershed remediation. In this study, we examined the drivers of legacy P at the watershed scale, specifically in relation to the physical cascades and biogeochemical spirals of P along the continuum from soils to rivers and lakes and via surface and subsurface flow pathways. Terrestrial P legacies encompass prior nutrient and land management activities that have built up soil P to levels that exceed crop requirements and modified the connectivity between terrestrial P sources and fluvial transport. River and lake P legacies encompass a range of processes that control retention and remobilization of P, and these are linked to water and sediment residence times. We provide case studies that highlight the major processes and varying timescales across which legacy P continues to contribute P to receiving waters and undermine restoration efforts, and we discuss how these P legacies could be managed in future conservation programs.

UR - http://www.scopus.com/inward/record.url?scp=84882576153&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84882576153&partnerID=8YFLogxK

U2 - 10.2134/jeq2013.03.0098

DO - 10.2134/jeq2013.03.0098

M3 - Article

C2 - 24216410

AN - SCOPUS:84882576153

VL - 42

SP - 1308

EP - 1326

JO - Journal of Environmental Quality

JF - Journal of Environmental Quality

SN - 0047-2425

IS - 5

ER -