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Sammanfattning

Globally, significant societal resources are devoted to mitigating negative effects of eutrophication from excessive phosphorus (P) and nitrogen (N) loading. Potential effectiveness of mitigation measures and possible confounding factors are often assessed using studies conducted in headwater catchments. However, success is often evaluated based on trends in river mouth water chemistry. It is not clear how transferrable insights from headwater catchments are to larger rivers. Here, relationships between P and suspended solids (SS) identified in small agricultural headwater catchments were applied to 30 larger, mixed land use catchments draining into Malaren, a Swedish great lake. Relationships identified in headwater streams between SS concentration, catchment agricultural land percentage and arable land clay content were corroborated for the larger catchments (R2 = 0.59, p-value

Nyckelord

Water quality trends; Catchment characteristics; Mitigation measures; Trend analysis; Environmental monitoring; Diffuse sources

Publicerad i

Journal of Environmental Management
2024, volym: 349, artikelnummer: 119500

SLU författare

Globala målen (SDG)

SDG6 Rent vatten och sanitet för alla

UKÄ forskningsämne

Oceanografi, hydrologi, vattenresurser
Miljövetenskap

Publikationens identifierare

  • DOI: https://doi.org/10.1016/j.jenvman.2023.119500

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/127129