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Webinars and Videos

Webinars and Videos

Webinars and Videos

The Sustainable Phosphorus Alliance hosts on important phosphorus management issues. Our members participate in the webinars and the phosphorus sustainability community is invited to attend.

In addition, we create video abstracts of phosphorus sustainability research that has been published recently in respected, peer-reviewed journals through our series The video abstracts are 5- to 10-minutes long and the researchers present their own findings.

Upcoming Webinar

A Legacy of Phosphorus

Sept 30 at 11:00 am CT

We can’t control how phosphorus was applied as fertilizer in the past, but that doesn’t mean phosphorus applied in the past doesn’t need to be managed today. In watersheds across the globe, phosphorus levels from past applications–so called “legacy phosphorus”–has overwhelmed the capacity of the soil to store it. As a result, these soils can bleed phosphorus and pollute nearby waterbodies. In this webinar, we’ll describe the global magnitude of this problem, the soil chemistry of legacy phosphorus, and the techniques at our disposal for dealing with legacy phosphorus losses to water. Our panelists include Dr. Dean Hesterberg, of the Brazilian Center for Research in Energy and Materials, Dr. Isis Scott of the University of Maryland, and Dr. Jean-Olivier Goyette of the University of Montreal. We’ll have plenty of time for questions and answers from the audience.


  • Dr. Dean Hesterberg, Brazilian Center for Research in Energy and Materials
  • Dr. Isis Scott, University of Maryland
  • Dr. Jean-Olivier Goyette, University of Montreal
  • Register here

Most Recent Webinar

Phosphorus: Past and Future

Drs. Jim Elser and Phil Haygarth–two big names in the field of phosphorus sustainability–have joined forces to write a book for lay audiences that describes the nature and history of phosphorus, its uses, and its twin role as both an essential ingredient of agriculture and a major contaminant of our waters. “Phosphorus: Past and Future”, available from Oxford University Press, discusses emerging efforts and innovations to develop phosphorus sustainability solutions to protect our food supply and water quality. We hosted a high-level tour of the book with the authors and hear about the insights they gained from writing it.


  • Dr. Jim Elser, Sustainable Phosphorus Alliance
  • Dr. Phil Haygarth, University of Lancaster

Video Interviews – Phosphorus Science Now!

Dr. Matt Scholz of the Sustainable Phosphorus Alliance has conducted interviews with scientists about their work in phosphorus sustainability. Learn about their findings in these videos:

Nutrients Increase Global Freshwater Carbon Sink
Dr. Adam Heathcote of the Science Museum of Minnesota, discusses how nutrient pollution is changing the rate of carbon burial in freshwater lake sediments across the globe.

Dr. Adam Heathcote of the Science Museum of Minnesota

Global Data: Diffuse N and P Loads and Yields
We discuss with Dr. Rich McDowell of Lincoln University, NZ, his 2020 Geosciences Data Journal paper entitled “Global database of diffuse riverine nitrogen and phosphorus loads and yields”.

Dr. Rich McDowell of Lincoln University, NZ

Phosphorus Substance Flow Analysis in Northern Ireland
We speak with Drs. Donnacha Doody and Shane Rothwell of the Agri Food and Biosciences Institute and Lancaster Environment Centre, respectively, about their 2020 Resources, Conservation and Recycling paper “Phosphorus stocks and flows in an intensive livestock dominated food system”.

Drs. Donnacha Doody of the Agri Food and Biosciences Institute and Shane Rothwell of Lancaster Environment Centre