Long-term phosphorus mass-balance of Lake Erie (Canada-USA) reveals a major contribution of in-lake phosphorus loading

Bocaniov, Serghei A.; Scavia, Donald; Cappellen, Philippe Van

doi:10.1016/j.ecoinf.2023.102131

Cited by 9 publications

(3 citation statements)

References 87 publications

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“…There are also auxiliary variables for point sources, such as municipal wastewater treatment and industrial effluent. Another large source of P in LE is Lake Huron as water moves via rivers and agricultural dredging from Lake Huron into LE. , …”

Section: Identifying Opportunities To Enhance P Resiliencymentioning

confidence: 99%

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Global-to-Local Dependencies in Phosphorus Mass Flows and Markets: Pathways to Improving System Resiliency in Response to Exogenous Shocks

Baker,

Schunk,

Scholz

et al. 2024

Environ. Sci. Technol. Lett.

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Uneven global distribution of phosphate rock deposits and the supply chains to transport phosphorus (P) make P fertilizers vulnerable to exogenous shocks, including commodity market shocks; extreme weather events or natural disasters; and geopolitical instability, such as trade disputes, disruption of shipping routes, and war. Understanding bidirectional risk transmission (global-to-local and local-to-global) in P supply and consumption chains is thus essential. Ignoring P system interdependencies and associated risks could have major impacts on critical infrastructure operations and increase the vulnerability of global food systems. We highlight recent unanticipated events and cascading effects that have impacted P markets globally. We discuss the need to account for exogenous shocks in local assessments of P flows, policies, and infrastructure design choices. We also provide examples of how accounting for undervalued global risks to the P industry can hasten the transition to a sustainable P future. For example, leveraging internal P recycling loops, improving plant P use efficiency, and utilizing legacy soil P all enhance system resiliency in the face of exogenous shocks and longterm anticipated threats. Strategies applied at the local level, which are embedded within national and global policy systems, can have global-scale impacts in derisking the P supply chain.

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Section: Identifying Opportunities To Enhance P Resiliencymentioning

confidence: 99%

“…Another large source of P in LE is Lake Huron as water moves via rivers and agricultural dredging from Lake Huron into LE. 34 , 35 …”

Section: Identifying Opportunities To Enhance P Resiliencymentioning

confidence: 99%

Global-to-Local Dependencies in Phosphorus Mass Flows and Markets: Pathways to Improving System Resiliency in Response to Exogenous Shocks

Baker,

Schunk,

Scholz

et al. 2024

Environ. Sci. Technol. Lett.

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“…Even after the abatement of the external P loading, eutrophic conditions have been observed to persist in certain lakes (Schindler et al, 2016). This may be related to the role of internal P loading as a source of bioavailable P to the water column (Bocaniov et al, 2023;Jeppesen et al, 2005;Marsden, 1989;Robertson et al, 2018;Søndergaard et al, 2003;Van der Molen & Boers, 1994). Under high external total P (TP) loads, sediments can accumulate significant amounts of P in relatively reactive chemical forms (O'Connell et al, 2020).…”

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confidence: 99%

Contrasting Impacts of Agricultural Intensification and Urbanization on Lake Phosphorus Cycling and Implications for Managing Eutrophication

Slowinski,

Radosavljevic,

Graham

et al. 2023

JGR Biogeosciences

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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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Revealing the hidden burden for lake management: the sediment phosphorus storage pools in Eastern Plain Lake Zone, China

Zhang,

Zhao,

et al. 2023

Environ Sci Pollut Res

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Long-term phosphorus mass-balance of Lake Erie (Canada-USA) reveals a major contribution of in-lake phosphorus loading

Cited by 9 publications

References 87 publications

Global-to-Local Dependencies in Phosphorus Mass Flows and Markets: Pathways to Improving System Resiliency in Response to Exogenous Shocks

Global-to-Local Dependencies in Phosphorus Mass Flows and Markets: Pathways to Improving System Resiliency in Response to Exogenous Shocks

Contrasting Impacts of Agricultural Intensification and Urbanization on Lake Phosphorus Cycling and Implications for Managing Eutrophication

Revealing the hidden burden for lake management: the sediment phosphorus storage pools in Eastern Plain Lake Zone, China

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