prof.dr.ir. JW (Jan-Willem) van Groenigen

Research and Teaching

I am a soil biochemist, working as full professor in the Soil Biology Group. My inaugural lecture was entitled “Natural cycles in unnatural soil”. To me, this is still the best summary of my research program. My main aim is to understand cycles of elements, in particular those of the nutrients Nitrogen and Phosphorus, as well as Carbon. I study in particular how soil organisms affect these cycles (“natural cycles”) in man-made systems (“unnatural soil”; often agriculture) rather than natural ecosystems.

I have chosen this focus out of a conviction that mainstream soil ecology is biased when studying agricultural systems. Implicitly or explicitly, natural systems are almost always considered the benchmark for sustainability. Seen in that light, agriculture will be a continuous disappointment for soil ecologists, as biodiversity is almost inevitably lower in agriculture than in nature. As a result, most of the processes mediated by soil biota will also function less well in agriculture than in nature. The goal of soil ecologists will therefore often be to make agriculture as similar to nature as possible: this is reflected in phrases such as “learning from nature” and “nature-inclusive agriculture”.

Up to a point, I agree with this approach. Nature can learn us important things that can help to improve agricultural systems. However, there are also many cases where processes that are really important in nature are less relevant in agriculture. I am particularly intrigued with novel roles of biota that do not have a parallel in nature, such as the effects earthworm can have on making “legacy phosphorus” from past fertilization available to crops. As I phrased it in my inaugural lecture, we should be “inspired by nature, but not blinded by nature”. The main societal themes which my research relates to are food security, the need for circularity, and climate change.

I am an enthusiastic teacher. It is my strong conviction that at a university, excellent teaching begets excellent research, and excellent research begets excellent teaching. One is not possible - or desirable - without the other. I therefore try to integrate my research as much as possible with my teaching. During my career until now, I have (co-)supervised 19 PhD students and more than 100 MSc and BSc students.

Much of my professional time is taken up by Geoderma, the global journal of soil science, of which I am the Chair of the Editors-in-Chief. In 2023, Geoderma switched as one of the first major soil science journal to a full Open Access publishing model.

I have so far published more than 120 manuscripts in peer-reviewed journals as author or co-author. Since 2018, I have been listed as “Highly Cited Scientist” by Clarivate / Web of Science, and in 2024 the European Geophysical Union awarded me the prestigious Philippe Duchaufour Medal for “outstanding work on the integration of agricultural management and environmental science as they relate to global change".

• Elsevier (1-1-2015/31-12-2099)
  Responsible for setting the course of the journal; the composition of the editorial team; and the quality of the peer review process.
• Elsevier (1-9-2024/1-9-2034)
  The Scopus Content Selection and Advisory Board (CSAB) is an international group of scientists who represent the major scientific disciplines. The board members are responsible for reviewing all titles that are suggested to Scopus. The CSAB is independent, and is comprised of 17 Subject Chairs, each representing a specific subject field. I am the Subject Chair for Agriculture & Biological Sciences. Next to deciding about which journals etc should be included in Scopus and removed from it, the CSAB also works with the Scopus team to understand how Scopus is used, what content is relevant for users and what enhancements should be made.