Longevity and effectiveness of aluminum addition to reduce sediment phosphorus release and restore lake water quality

Brian J Huser, Sara Egemose, Harvey Harper, Michael Hupfer, Henning Jensen, Keith M Pilgrim, Kasper Reitzel, Emil Rydin, Martyn Futter

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Resumé

114 lakes treated with aluminum (Al) salts to reduce internal phosphorus (P) loading were analyzed to identify factors driving longevity of post-treatment water quality improvements. Lakes varied greatly in morphology, applied Al dose, and other factors that may have affected overall treatment effectiveness. Treatment longevity based on declines in epilimnetic total P (TP) concentration averaged 11 years for all lakes (range of 0-45 years). When longevity estimates were used for lakes with improved conditions through the end of measurements, average longevity increased to 15 years. Significant differences in treatment longevity between deeper, stratified lakes (mean 21 years) and shallow, polymictic lakes (mean 5.7 years) were detected, indicating factors related to lake morphology are important for treatment success. A decision tree developed using a partition model suggested Al dose, Osgood index (OI, a morphological index), and watershed to lake area ratio (related to hydraulic residence time, WA:LA) were the most important variables determining treatment longevity. Multiple linear regression showed that Al dose, WA:LA, and OI explained 47, 32 and 3% respectively of the variation in treatment longevity. Other variables (too data limited to include in the analysis) also appeared to be of importance, including sediment P content to Al dose ratios and the presence of benthic feeding fish in shallow, polymictic lakes.

OriginalsprogEngelsk
TidsskriftWater Research
Vol/bind97
Udgave nummerJune
Sider (fra-til)122-132
ISSN0043-1354
DOI
StatusUdgivet - 2016

Fingeraftryk

lake water
Water quality
Lakes
Phosphorus
Sediments
aluminum
phosphorus
Aluminum
water quality
lake
sediment
Decision trees
Watersheds
Linear regression
Fish
residence time
Hydraulics
watershed
Salts
salt

Citer dette

Huser, Brian J ; Egemose, Sara ; Harper, Harvey ; Hupfer, Michael ; Jensen, Henning ; Pilgrim, Keith M ; Reitzel, Kasper ; Rydin, Emil ; Futter, Martyn. / Longevity and effectiveness of aluminum addition to reduce sediment phosphorus release and restore lake water quality. I: Water Research. 2016 ; Bind 97, Nr. June. s. 122-132.
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title = "Longevity and effectiveness of aluminum addition to reduce sediment phosphorus release and restore lake water quality",
abstract = "114 lakes treated with aluminum (Al) salts to reduce internal phosphorus (P) loading were analyzed to identify factors driving longevity of post-treatment water quality improvements. Lakes varied greatly in morphology, applied Al dose, and other factors that may have affected overall treatment effectiveness. Treatment longevity based on declines in epilimnetic total P (TP) concentration averaged 11 years for all lakes (range of 0-45 years). When longevity estimates were used for lakes with improved conditions through the end of measurements, average longevity increased to 15 years. Significant differences in treatment longevity between deeper, stratified lakes (mean 21 years) and shallow, polymictic lakes (mean 5.7 years) were detected, indicating factors related to lake morphology are important for treatment success. A decision tree developed using a partition model suggested Al dose, Osgood index (OI, a morphological index), and watershed to lake area ratio (related to hydraulic residence time, WA:LA) were the most important variables determining treatment longevity. Multiple linear regression showed that Al dose, WA:LA, and OI explained 47, 32 and 3{\%} respectively of the variation in treatment longevity. Other variables (too data limited to include in the analysis) also appeared to be of importance, including sediment P content to Al dose ratios and the presence of benthic feeding fish in shallow, polymictic lakes.",
author = "Huser, {Brian J} and Sara Egemose and Harvey Harper and Michael Hupfer and Henning Jensen and Pilgrim, {Keith M} and Kasper Reitzel and Emil Rydin and Martyn Futter",
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Longevity and effectiveness of aluminum addition to reduce sediment phosphorus release and restore lake water quality. / Huser, Brian J; Egemose, Sara; Harper, Harvey; Hupfer, Michael; Jensen, Henning; Pilgrim, Keith M; Reitzel, Kasper; Rydin, Emil; Futter, Martyn.

I: Water Research, Bind 97, Nr. June, 2016, s. 122-132.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Longevity and effectiveness of aluminum addition to reduce sediment phosphorus release and restore lake water quality

AU - Huser, Brian J

AU - Egemose, Sara

AU - Harper, Harvey

AU - Hupfer, Michael

AU - Jensen, Henning

AU - Pilgrim, Keith M

AU - Reitzel, Kasper

AU - Rydin, Emil

AU - Futter, Martyn

N1 - Copyright © 2015 Elsevier Ltd. All rights reserved.

PY - 2016

Y1 - 2016

N2 - 114 lakes treated with aluminum (Al) salts to reduce internal phosphorus (P) loading were analyzed to identify factors driving longevity of post-treatment water quality improvements. Lakes varied greatly in morphology, applied Al dose, and other factors that may have affected overall treatment effectiveness. Treatment longevity based on declines in epilimnetic total P (TP) concentration averaged 11 years for all lakes (range of 0-45 years). When longevity estimates were used for lakes with improved conditions through the end of measurements, average longevity increased to 15 years. Significant differences in treatment longevity between deeper, stratified lakes (mean 21 years) and shallow, polymictic lakes (mean 5.7 years) were detected, indicating factors related to lake morphology are important for treatment success. A decision tree developed using a partition model suggested Al dose, Osgood index (OI, a morphological index), and watershed to lake area ratio (related to hydraulic residence time, WA:LA) were the most important variables determining treatment longevity. Multiple linear regression showed that Al dose, WA:LA, and OI explained 47, 32 and 3% respectively of the variation in treatment longevity. Other variables (too data limited to include in the analysis) also appeared to be of importance, including sediment P content to Al dose ratios and the presence of benthic feeding fish in shallow, polymictic lakes.

AB - 114 lakes treated with aluminum (Al) salts to reduce internal phosphorus (P) loading were analyzed to identify factors driving longevity of post-treatment water quality improvements. Lakes varied greatly in morphology, applied Al dose, and other factors that may have affected overall treatment effectiveness. Treatment longevity based on declines in epilimnetic total P (TP) concentration averaged 11 years for all lakes (range of 0-45 years). When longevity estimates were used for lakes with improved conditions through the end of measurements, average longevity increased to 15 years. Significant differences in treatment longevity between deeper, stratified lakes (mean 21 years) and shallow, polymictic lakes (mean 5.7 years) were detected, indicating factors related to lake morphology are important for treatment success. A decision tree developed using a partition model suggested Al dose, Osgood index (OI, a morphological index), and watershed to lake area ratio (related to hydraulic residence time, WA:LA) were the most important variables determining treatment longevity. Multiple linear regression showed that Al dose, WA:LA, and OI explained 47, 32 and 3% respectively of the variation in treatment longevity. Other variables (too data limited to include in the analysis) also appeared to be of importance, including sediment P content to Al dose ratios and the presence of benthic feeding fish in shallow, polymictic lakes.

U2 - 10.1016/j.watres.2015.06.051

DO - 10.1016/j.watres.2015.06.051

M3 - Journal article

VL - 97

SP - 122

EP - 132

JO - Water Research

JF - Water Research

SN - 0043-1354

IS - June

ER -