@article{Slowinski-2023-Contrasting,
title = "Contrasting Impacts of Agricultural Intensification and Urbanization on Lake Phosphorus Cycling and Implications for Managing Eutrophication",
author = "Slowinski, Stephanie and
Radosavljevic, Jovana and
Graham, Alyssa and
Ippolito, Isabella and
Thomas, Kathryn and
Rezanezhad, Fereidoun and
Shafii, Mahyar and
Parsons, Chris T. and
Basu, Nandita B. and
Wiklund, Johan A. and
Hall, Roland I. and
Cappellen, Philippe Van and
Slowinski, Stephanie and
Radosavljevic, Jovana and
Graham, Alyssa and
Ippolito, Isabella and
Thomas, Kathryn and
Rezanezhad, Fereidoun and
Shafii, Mahyar and
Parsons, Chris T. and
Basu, Nandita B. and
Wiklund, Johan A. and
Hall, Roland I. and
Cappellen, Philippe Van",
journal = "Journal of Geophysical Research: Biogeosciences, Volume 128, Issue 11",
volume = "128",
number = "11",
year = "2023",
publisher = "American Geophysical Union (AGU)",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G23-11001",
doi = "10.1029/2023jg007558",
abstract = "Abstract Sediment core and water quality data, together with historical information on land use/land cover (LULC), were used to reconstruct changes in phosphorus (P) loading and cycling in Lake Wilcox, Ontario, Canada, since the early 1920s. After first being cleared for farming, the originally forested watershed subsequently underwent urbanization. The large increase in P loading accompanying agricultural intensification after World War II caused the eutrophication of the lake. However, improved soil conservation since the 1980s and urban stormwater management since the 1990s have brought watershed P loading and sediment accumulation down to levels comparable to the early 1900s. Yet, the lake continues to exhibit eutrophication‐like symptoms, especially the intensification of hypoxia in the hypolimnion. Post‐2000 water quality data indicate that the latter is not driven by external P loading from the watershed, but rather by rapid salinization that strengthens the lake's summer stratification and enhances internal P loading. Salinization is caused by the increasing application of deicing agents in the expanding urban area. Curbing salt inputs will therefore be essential to restore the lake. Overall, our results provide new insights into the shifts in lake biogeochemistry associated with LULC changes and the implementation of best management practices. The approaches and findings of our case study have broad applicability for the large number of freshwater ecosystems worldwide that are experiencing salinization.",
}
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<abstract>Abstract Sediment core and water quality data, together with historical information on land use/land cover (LULC), were used to reconstruct changes in phosphorus (P) loading and cycling in Lake Wilcox, Ontario, Canada, since the early 1920s. After first being cleared for farming, the originally forested watershed subsequently underwent urbanization. The large increase in P loading accompanying agricultural intensification after World War II caused the eutrophication of the lake. However, improved soil conservation since the 1980s and urban stormwater management since the 1990s have brought watershed P loading and sediment accumulation down to levels comparable to the early 1900s. Yet, the lake continues to exhibit eutrophication‐like symptoms, especially the intensification of hypoxia in the hypolimnion. Post‐2000 water quality data indicate that the latter is not driven by external P loading from the watershed, but rather by rapid salinization that strengthens the lake’s summer stratification and enhances internal P loading. Salinization is caused by the increasing application of deicing agents in the expanding urban area. Curbing salt inputs will therefore be essential to restore the lake. Overall, our results provide new insights into the shifts in lake biogeochemistry associated with LULC changes and the implementation of best management practices. The approaches and findings of our case study have broad applicability for the large number of freshwater ecosystems worldwide that are experiencing salinization.</abstract>
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%0 Journal Article
%T Contrasting Impacts of Agricultural Intensification and Urbanization on Lake Phosphorus Cycling and Implications for Managing Eutrophication
%A Slowinski, Stephanie
%A Radosavljevic, Jovana
%A Graham, Alyssa
%A Ippolito, Isabella
%A Thomas, Kathryn
%A Rezanezhad, Fereidoun
%A Shafii, Mahyar
%A Parsons, Chris T.
%A Basu, Nandita B.
%A Wiklund, Johan A.
%A Hall, Roland I.
%A Cappellen, Philippe Van
%J Journal of Geophysical Research: Biogeosciences, Volume 128, Issue 11
%D 2023
%V 128
%N 11
%I American Geophysical Union (AGU)
%F Slowinski-2023-Contrasting
%X Abstract Sediment core and water quality data, together with historical information on land use/land cover (LULC), were used to reconstruct changes in phosphorus (P) loading and cycling in Lake Wilcox, Ontario, Canada, since the early 1920s. After first being cleared for farming, the originally forested watershed subsequently underwent urbanization. The large increase in P loading accompanying agricultural intensification after World War II caused the eutrophication of the lake. However, improved soil conservation since the 1980s and urban stormwater management since the 1990s have brought watershed P loading and sediment accumulation down to levels comparable to the early 1900s. Yet, the lake continues to exhibit eutrophication‐like symptoms, especially the intensification of hypoxia in the hypolimnion. Post‐2000 water quality data indicate that the latter is not driven by external P loading from the watershed, but rather by rapid salinization that strengthens the lake’s summer stratification and enhances internal P loading. Salinization is caused by the increasing application of deicing agents in the expanding urban area. Curbing salt inputs will therefore be essential to restore the lake. Overall, our results provide new insights into the shifts in lake biogeochemistry associated with LULC changes and the implementation of best management practices. The approaches and findings of our case study have broad applicability for the large number of freshwater ecosystems worldwide that are experiencing salinization.
%R 10.1029/2023jg007558
%U https://gwf-uwaterloo.github.io/gwf-publications/G23-11001
%U https://doi.org/10.1029/2023jg007558
Markdown (Informal)
[Contrasting Impacts of Agricultural Intensification and Urbanization on Lake Phosphorus Cycling and Implications for Managing Eutrophication](https://gwf-uwaterloo.github.io/gwf-publications/G23-11001) (Slowinski et al., GWF 2023)
ACL
- Stephanie Slowinski, Jovana Radosavljevic, Alyssa Graham, Isabella Ippolito, Kathryn Thomas, Fereidoun Rezanezhad, Mahyar Shafii, Chris T. Parsons, Nandita B. Basu, Johan A. Wiklund, Roland I. Hall, Philippe Van Cappellen, Stephanie Slowinski, Jovana Radosavljevic, Alyssa Graham, Isabella Ippolito, Kathryn Thomas, Fereidoun Rezanezhad, Mahyar Shafii, et al.. 2023. Contrasting Impacts of Agricultural Intensification and Urbanization on Lake Phosphorus Cycling and Implications for Managing Eutrophication. Journal of Geophysical Research: Biogeosciences, Volume 128, Issue 11, 128(11).
